$(function () {

    console.log("Create PrettyGCode View Model");
    function PrettyGCodeViewModel(parameters) {
        var self = this;
        self.printerProfiles = parameters[2];
        self.controlViewModel = parameters[3];

        //Parse terminal data for file and pos updates.
        var curJobName = "";
        var durJobDate = 0;//use date of file to check for update. 
        function updateJob(job) {

            if (durJobDate != job.file.date) {
                curJobName = job.file.path;
                durJobDate = job.file.date;
                if (viewInitialized && gcodeProxy) {
                    gcodeProxy.loadGcode('downloads/files/local/' + curJobName);
                    printHeadSim = new PrintHeadSimulator();

                    //terminalGcodeProxy = new GCodeParser();
                    //terminalGcodeProxy;//used to display gcode actualy sent to printer.
                }
            }

        }
        self.fromHistoryData = function (data) {
            if (!viewInitialized)
                return;

            updateJob(data.job);
        };

        /* Arc Interpolation Parameters */
        self.mm_per_arc_segment = 1.0;  // The absolute longest length of an interpolated segment
        self.min_arc_segments = 20;  // The minimum number of interpolated segments in a full circle, 0 to disable
        // The absolute minimum length of an interpolated segment.
        // Limited by mm_per_arc_segment as a max and min_arc_segments as a minimum, 0 to disable
        self.min_mm_per_arc_segment = 0.1;
        // This controls how many arcs will be drawn before the exact position of the
        // next segment is recalculated.  Reduces the number of sin/cos calls.
        // 0 to disable
        self.n_arc_correction = 24;

        // A function to interpolate arcs into straight segments.  Returns an array of positions
        self.interpolateArc = function (state, arc) {
            // This is adapted from the Marlin arc interpolation routine found at
            // https://github.com/MarlinFirmware/Marlin/
            // The license can be found here: https://github.com/MarlinFirmware/Marlin/blob/2.0.x/LICENSE
            // This allows the rendered arcs to be VERY close to what would be printed,
            // depending on the firmware settings.

            // Create vars to hold the initial and current position so we don't affect the state
            var initial_position = {}, current_position = {};
            Object.assign(initial_position, state)
            Object.assign(current_position, state)
            // Create the results which contain the copied initial position
            var interpolated_segments = [initial_position];

            // note that arc.is_clockwise determines if this is a G2, else it is a G3
            // I'm going to also extract all the necessary variables up front to make this easier
            // to convert from the source c++ arc interpolation code

            // Convert r format to i j format if necessary
            // I have no code like this to test, so I am not 100% sure this will work as expected
            // commenting out for now
            /*
            if (arc.r)
            {

                if (arc.x != current_position.x || arc.y != current_position.y) {
                    var vector = {x: (arc.x - current_position.x)/2.0, y: (arc.y - current_position.y)/2.0};
                    var e = arc.is_clockwise ^ (arc.r < 0) ? -1 : 1;
                    var len = Math.sqrt(Math.pow(vector.x,2) + Math.pow(vector.y,2));
                    var h2 = (arc.r - len) * (arc.r + len);
                    var h = (h2 >= 0) ? Math.sqrt(h2) : 0.0;
                    var bisector = {x: -1.0*vector.y, y: vector.x };
                    arc.i = (vector.x + bisector.x) / len * e * h;
                    arc.j = (vector.y + bisector.y) / len * e * h;
                }
            }*/

            // Calculate the radius, we will be using it a lot.
            var radius = Math.hypot(arc.i, arc.j);
            // Radius Vector
            var v_radius = { x: -1.0 * arc.i, y: -1.0 * arc.j };
            // Center of arc
            var center = { x: current_position.x - v_radius.x, y: current_position.y - v_radius.y };
            // Z Travel Total
            var travel_z = arc.z - current_position.z;
            // Extruder Travel
            var travel_e = arc.e - current_position.e;
            // Radius Target Vector
            var v_radius_target = { x: arc.x - center.x, y: arc.y - center.y };

            var angular_travel_total = Math.atan2(
                v_radius.x * v_radius_target.y - v_radius.y * v_radius_target.x,
                v_radius.x * v_radius_target.x + v_radius.y * v_radius_target.y
            );
            // Having a positive angle is convenient here.  We will make it negative later
            // if we need to.
            if (angular_travel_total < 0) { angular_travel_total += 2.0 * Math.PI }

            // Copy our mm_per_arc_segments var because we may be modifying it for this arc
            var mm_per_arc_segment = self.mm_per_arc_segment;

            // Enforce min_arc_segments if it is greater than 0
            if (self.min_arc_segments > 0) {
                mm_per_arc_segment = (radius * ((2.0 * Math.PI) / self.min_arc_segments));
                // We will need to enforce our max segment length later, flag this
            }

            // Enforce the minimum segment length if it is set
            if (self.min_mm_per_arc_segment > 0) {
                if (mm_per_arc_segment < self.min_mm_per_arc_segment) {
                    mm_per_arc_segment = self.min_mm_per_arc_segment;
                }
            }

            // Enforce the maximum segment length
            if (mm_per_arc_segment > self.mm_per_arc_segment) {
                mm_per_arc_segment = self.mm_per_arc_segment;
            }

            // Adjust the angular travel if the direction is clockwise
            if (arc.is_clockwise) { angular_travel_total -= (2.0 * Math.PI); }

            // Compensate for a full circle, which would give us an angle of 0 here
            // We want that to be 2Pi.  Note, full circles are bad in 3d printing, but they
            // should still render correctly
            if (current_position.x == arc.x && current_position.y == arc.y && angular_travel_total == 0) {
                angular_travel_total += 2.0 * Math.PI;
            }

            // Now it's time to calculate the mm of total travel along the arc, making sure we take Z into account
            var mm_of_travel_arc = Math.hypot(angular_travel_total * radius, Math.abs(travel_z));

            // Get the number of segments total we will be generating
            var num_segments = Math.ceil(mm_of_travel_arc / mm_per_arc_segment);

            // Calculate xy_segment_theta, z_segment_theta, and e_segment_theta
            // This is the distance we will be moving for each interpolated segment
            var xy_segment_theta = angular_travel_total / num_segments;
            var z_segment_theta = travel_z / num_segments;
            var e_segment_theta = travel_e / num_segments;

            // Time to interpolate!
            if (num_segments > 1) {
                // it's possible for num_segments to be zero.  If that's true, we just need to draw a line
                // from the start to the end coordinates, and this isn't needed.

                // I am NOT going to use the small angel approximation for sin and cos here, but it
                // could be easily added if performance is a problem.  Here is code for this if it becomes
                // necessary:
                //var sq_theta_per_segment = theta_per_segment * theta_per_segment;
                //var sin_T = theta_per_segment - sq_theta_per_segment * theta_per_segment / 6;
                //var cos_T = 1 - 0.5f * sq_theta_per_segment; // Small angle approximation
                var cos_t = Math.cos(xy_segment_theta);
                var sin_t = Math.sin(xy_segment_theta);
                var r_axisi;

                // We are going to correct sin and cos only occasionally to reduce cpu usage
                var count = 0;
                // Loop through each interpolated segment, minus the endpoint which will be handled separately
                for (var i = 1; i < num_segments; i++) {

                    if (count < self.n_arc_correction) {
                        // not time to recalculate X and Y.
                        // Apply the rotational vector
                        r_axisi = v_radius.x * sin_t + v_radius.y * cos_t;
                        v_radius.x = v_radius.x * cos_t - v_radius.y * sin_t;
                        v_radius.y = r_axisi;
                        count++;
                    }
                    else {
                        // Arc correction to radius vector. Computed only every N_ARC_CORRECTION increments.
                        // Compute exact location by applying transformation matrix from initial radius vector(=-offset).
                        var sin_ti = Math.sin(i * xy_segment_theta);
                        var cos_ti = Math.cos(i * xy_segment_theta);
                        v_radius.x = (-1.0 * arc.i) * cos_ti + arc.j * sin_ti;
                        v_radius.y = (-1.0 * arc.i) * sin_ti - arc.j * cos_ti;
                        count = 0;
                    }

                    // Draw the segment
                    var line = {
                        x: center.x + v_radius.x,
                        y: center.y + v_radius.y,
                        z: current_position.z + z_segment_theta,
                        e: current_position.e + e_segment_theta,
                        f: arc.f
                    };
                    /*console.debug(
                        "Arc Segment " + i.toString() + ":" +
                        " X" + line.x.toString() +
                        " Y" + line.y.toString() +
                        " Z" + line.z.toString() +
                        " E" + line.e.toString() +
                        " F" + line.f.toString()
                    );*/
                    interpolated_segments.push(line);

                    // Update the current state
                    current_position.x = line.x;
                    current_position.y = line.y;
                    current_position.z = line.z;
                    current_position.e = line.e;
                }
            }
            // Move to the target position
            var line = {
                x: arc.x,
                y: arc.y,
                z: arc.z,
                e: arc.e,
                f: arc.f
            };
            interpolated_segments.push(line);
            //Done!!!
            return interpolated_segments;
        };

        //used to animate the nozzle position in response to terminal messages
        function PrintHeadSimulator() {
            var buffer = [];
            var HeadState = function () {
                this.position = new THREE.Vector3(0, 0, 0);
                this.rate = 5.0 * 60;
                this.extrude = false;
                this.relative = false;
                //this.lastExtrudedZ=0;//used to better calc layer number
                this.layerLineNumber = 0;
                this.clone = function () {
                    var newState = new HeadState();
                    newState.position.copy(this.position);
                    newState.rate = this.rate;
                    newState.extrude = this.extrude;
                    newState.relative = this.relative;
                    //newState.lastExtrudedZ=this.lastExtrudedZ;
                    newState.layerLineNumber = this.layerLineNumber;
                    return (newState);
                }
            };
            var curState = new HeadState();
            var curEnd = new HeadState();
            var parserCurState = new HeadState();

            var observedLayerCount = 0;
            var parserLayerLineNumber = 0;
            var parserLastExtrudedZ = 0;

            var curLastExtrudedZ = 0;

            parserCurState.extrude = true;


            this.getCurPosition = function () {
                return ({ position: curState.position, layerZ: curLastExtrudedZ, lineNumber: curState.layerLineNumber });
            }

            this.getBufferStats = function () {
                return (buffer.length);
            }
            //
            //var currentFileOffset=0;

            //add gcode command to the buffer
            this.addCommand = function (cmd) {
                //currentFileOffset+=cmd.length;
                if (buffer.length > 1000) {
                    console.log("PrintHeadSimulator buffer overflow")
                    return;
                }
                var is_g0_g1 = cmd.indexOf(" G0") > -1 || cmd.indexOf(" G1") > -1;
                var is_g2_g3 = !is_g0_g1 && cmd.indexOf(" G2") > -1 || cmd.indexOf(" G3") > -1;
                if (is_g0_g1 || is_g2_g3) {
                    var parserPreviousState = {};
                    // If this is a g2/g3, we need to know the previous state to interpolate the arcs
                    if (is_g2_g3) { parserPreviousState = Object.assign(parserPreviousState, parserCurState); }
                    // Extract x, y, z, f and e
                    var x = parseFloat(cmd.split("X")[1])
                    if (!Number.isNaN(x)) {
                        if (parserCurState.relative)
                            parserCurState.position.x += x;
                        else
                            parserCurState.position.x = x;
                    }
                    var y = parseFloat(cmd.split("Y")[1])
                    if (!Number.isNaN(y)) {
                        if (parserCurState.relative)
                            parserCurState.position.y += y;
                        else
                            parserCurState.position.y = y;
                    }
                    var z = parseFloat(cmd.split("Z")[1])
                    if (!Number.isNaN(z)) {
                        if (parserCurState.relative)
                            parserCurState.position.z += z;
                        else
                            parserCurState.position.z = z;
                    }
                    var f = parseFloat(cmd.split("F")[1])
                    if (!Number.isNaN(f)) {
                        parserCurState.rate = f;
                    }
                    var e = parseFloat(cmd.split("E")[1])
                    if (!Number.isNaN(e)) {
                        parserCurState.extrude = true;
                        if (parserLastExtrudedZ != parserCurState.position.z) {
                            //new layer (probably)
                            //observedLayerCount++
                            //console.log("New layer Z."+parserCurState.position.z+" File offset:"+currentFileOffset)
                            parserLayerLineNumber = 0;
                            parserLastExtrudedZ = parserCurState.position.z;
                        }
                        else
                            parserLayerLineNumber++;
                    } else {
                        parserCurState.extrude = false;
                    }
                    parserCurState.layerLineNumber = parserLayerLineNumber;

                    // if this is a g0/g1, push the state to the buffer
                    if (is_g0_g1) { buffer.push(parserCurState.clone()); }
                    else {
                        // This is a g2/g3, so we need to do things a bit differently.
                        // Extract I and J, R, and is_clockwise
                        var is_clockwise = cmd.indexOf(" G2") > -1;
                        var i = parseFloat(cmd.split("I")[1]);
                        var j = parseFloat(cmd.split("J")[1]);
                        var r = parseFloat(cmd.split("R")[1]);
                        var arc = {
                            // Get X Y and Z from the previous state if it is not
                            // provided
                            x: this.getCurrentCoordinate(x, parserPreviousState.position.x),
                            y: this.getCurrentCoordinate(y, parserPreviousState.position.y),
                            z: this.getCurrentCoordinate(z, parserPreviousState.position.z),
                            // Set I and J and R to 0 if they are not provided.
                            i: this.getCurrentCoordinate(i, 0),
                            j: this.getCurrentCoordinate(j, 0),
                            r: this.getCurrentCoordinate(r, 0),
                            // K omitted, not sure what that's supposed to do
                            //k: k !== undefined ? k : 0,
                            // Since the amount extruded doesn't really matter, set it to 1 if we are extruding,
                            // We don't want undefined values going into the arc interpolation routine
                            e: this.getCurrentCoordinate(e, parserPreviousState.extrude ? 1 : 0),
                            f: this.getCurrentCoordinate(r, parserPreviousState.rate),
                            is_clockwise: is_clockwise
                        };
                        // Need to handle R maybe
                        var segments = self.interpolateArc(parserPreviousState, arc);
                        for (var index = 1; index < segments.length; index++) {
                            var cur_segment = segments[index];
                            var cur_state = parserCurState.clone();
                            cur_state.position = new THREE.Vector3(cur_segment.x, cur_segment.y, cur_segment.z);
                            buffer.push(cur_state);
                        }
                    }
                } else if (cmd.indexOf(" G90") > -1) {
                    //G90: Set to Absolute Positioning
                    parserCurState.relative = false;
                } else if (cmd.indexOf(" G91") > -1) {
                    //G91: Set to state.relative Positioning
                    parserCurState.relative = true;
                }

            }
            //window.myMaxRate=120.0; 
            //window.fudge=7; 

            // Handle undefined and NaN for current coordinates.
            this.getCurrentCoordinate = function (cmdCoord, prevCoord) {
                if (cmdCoord === undefined || isNaN(cmdCoord)) { cmdCoord = prevCoord; }
                return cmdCoord;
            }
            //Update the printhead position based on time elapsed.
            this.updatePosition = function (timeStep) {

                //Convert the gcode feed rate (in MM/per min?) to rate per second.
                var rate = curState.rate / 60.0;

                //rate=rate/2;//todo. why still too fast?

                //adapt rate to keep up with buffer.
                //todo. Make dist based rather than just buffer size.
                if (buffer.length > 10) {
                    rate = rate * (buffer.length / 5.0);
                    //console.log(["Too Slow ",rate,buffer.length])
                }
                if (buffer.length < 5) {
                    rate = rate * (1.0 / (buffer.length * 5.0));
                    //console.log(["Too fast ",rate,buffer.length])
                }
                //rate=Math.min(rate,window.myMaxRate);
                //dist head needs to travel this frame
                var dist = rate * timeStep
                while (buffer.length > 0 && dist > 0)//while some place to go and some dist left.
                {
                    //direction
                    var vectToCurEnd = curEnd.position.clone().sub(curState.position);
                    var distToEnd = vectToCurEnd.length();
                    if (dist < distToEnd)//Inside current line?
                    {
                        //move pos the distance along line
                        vectToCurEnd.setLength(dist);
                        curState.position.add(vectToCurEnd);
                        dist = 0;//all done 
                    } else {
                        //move pos to end point.
                        curState.position.copy(curEnd.position);
                        curState.rate = curEnd.rate;
                        //subract dist for next loop.
                        dist = dist - distToEnd;

                        //draw segment
                        //todo.

                        //update lastZ for display of layers. 
                        if (curEnd.extrude && curEnd.position.z != curLastExtrudedZ) {
                            curLastExtrudedZ = curEnd.position.z;
                        }
                        //console.log([curState.position.z,curState.layerLineNumber])

                        //start on next buffer command
                        buffer.shift();
                        if (buffer.length > 0) {
                            curEnd = buffer[0];
                            curState.layerLineNumber = curEnd.layerLineNumber;
                        }
                    }
                }
            }
        }

        var printHeadSim = new PrintHeadSimulator();
        var curPrinterState = null;
        var curPrintFilePos = 0;
        self.fromCurrentData = function (data) {

            //Dont do anything if view not initalized
            if (!viewInitialized)
                return;

            //update current loaded model.
            updateJob(data.job);
            if (curPrinterState && curPrinterState.text != data.state.text) {
                //console.log(["Printer state changed: ",curPrinterState.text," -> ",data.state.text])
                if (data.state.text.startsWith("Operational")) {
                    //console.log("Resetting print simulation");
                    printHeadSim = new PrintHeadSimulator();
                }
            }
            curPrinterState = data.state;


            curPrintFilePos = data.progress.filepos;

            //parse logs position data for simulator
            if (data.logs.length) {
                data.logs.forEach(function (e, i) {
                    if (e.startsWith("Send:")) {
                        //console.log(["GCmd:",e]);
                        if (printHeadSim)
                            printHeadSim.addCommand(e);

                        //Strip out the extra stuff in the terminal line.
                        //match second space to * character. I hate regexp.
                        if (terminalGcodeProxy) {
                            var reg = new RegExp('(?<=\\s\\S*\\s).[^*]*', 'g');
                            var matches = e.match(reg);
                            if (matches && matches.length > 0)
                                terminalGcodeProxy.parse(matches[0] + '\n');
                        }
                    }
                    else if (e.startsWith("Recv: T:")) {
                        //console.log(["GCmd:",e]);
                        let parts = e.substr(6).split("@");//remove Recv: and checksum.
                        let temps = parts[0];
                        let statusStr = temps;//+" Buffer:"+printHeadSim.getBufferStats()
                        $(".pgstatus").text(statusStr);

                    }
                })
            }
        };

        self.updateCss = function (newCss) {
            //alert(this)
            var newCss = $("#pg_add_css").val();
            console.log(["Update css:", newCss]);
            localStorage.setItem('pg_add_css_val', newCss)
            $("#pgcss").html(newCss);

        }
        self.onAfterBinding = function () {
            console.log("onAfterBinding")

            //var addCss=$("#add_css").val();
            $("<style id='pgcss'>")
                .prop("type", "text/css")
                .html("")
                .appendTo("head");

            var css = localStorage.getItem('pg_add_css_val')
            if (css) {
                $("#pgcss").html(css);
                $("#pg_add_css").val(css);
            }
        };
        self.onEventFileSelected = function (payload) {
            //console.log(["onEventFileSelected ",payload])
        }

        //Scene globals
        var camera, cameraControls, cameraLight;
        var scene, renderer;
        var lightBackground, darkBackground;
        var gcodeProxy;//used to display loaded gcode.

        var terminalGcodeProxy;//todo remove(prob not used anymore). used to display gcode actualy sent to printer.
        var cubeCamera;//todo make reflections optional.
        var nozzleModel;

        var clock;
        var dimensionsGroup;
        var sceneBounds = new THREE.Box3();
        //todo. Are these needed?
        var gcodeWid = 580;
        var gcodeHei = 580;
        var gui;

        var forceNoSync = false;//used to override sync when user drags slider. Todo. Better way to handle this?

        var currentLayerNumber = 0;

        //settings that are saved between sessions
        var PGSettings = function () {
            this.showMirror = false;//default changed
            this.fatLines = true;//default changed
            //this.reflections=false;//remove this
            this.darkMode = false;
            this.syncToProgress = true;
            this.orbitWhenIdle = false;
            this.reloadGcode = function () {
                if (gcodeProxy && curJobName != "")
                    gcodeProxy.loadGcode('downloads/files/local/' + curJobName);
            };
            this.showState = true;
            this.showWebcam = false;
            this.showFiles = false;
            this.showDash = false;
            this.antialias = true;

            this.showNozzle = true;
            this.highlightCurrentLayer = true;
        };
        var pgSettings = new PGSettings();

        function updateWindowStates() {
            if (pgSettings.showState) {
                $("#state_wrapper").removeClass("pghidden");
            }
            else {
                $("#state_wrapper").addClass("pghidden");
            }
            if (pgSettings.showFiles) {
                $("#files_wrapper").removeClass("pghidden");
            }
            else {
                $("#files_wrapper").addClass("pghidden");
            }
            if (pgSettings.showWebcam) {
                $(".gwin #webcam_rotator").removeClass("pghidden");
            }
            else {
                $(".gwin #webcam_rotator").addClass("pghidden");
            }
            if (pgSettings.showDash) {
                $("#tab_plugin_dashboard").removeClass("pghidden");
            }
            else {
                $("#tab_plugin_dashboard").addClass("pghidden");
            }
        }

        var bedVolume = {
            depth: 0,
            formFactor: "",
            height: 0,
            origin: "",
            width: 0,
        };
        var viewInitialized = false;
        self.onTabChange = function (current, previous) {

            if (current == "#tab_plugin_prettygcode") {
                if (!viewInitialized) {
                    viewInitialized = true;

                    //Watch for bed volume changes
                    self.printerProfiles.currentProfileData.subscribe(
                        function () {
                            //get new build volume.
                            updateBedVolume();
                            //update scene if any
                            updateGridMesh();

                            //Needed in case center has changed.
                            resetCamera();
                        });


                    //get current (possibly default) printer build volume.
                    updateBedVolume();

                    //console.log(["bedVolume",bedVolume]);

                    if (true) {
                        //simple gui
                        dat.GUI.TEXT_OPEN = "View Options"
                        dat.GUI.TEXT_CLOSED = "View Options"
                        gui = new dat.GUI({ autoPlace: false, name: "View Options", closed: false, closeOnTop: true, useLocalStorage: true });

                        //Override default storage location to fix bug with tabs.
                        //Not working
                        //gui.setLocalStorageHash("PrettyGCodeSettings");

                        gui.useLocalStorage = true;
                        // var guielem = $("<div id='mygui' style='position:absolute;right:95px;top:20px;opacity:0.8;z-index:5;'></div>");

                        // $('.gwin').prepend(guielem)

                        $('#mygui').append(gui.domElement);

                        gui.remember(pgSettings);
                        gui.add(pgSettings, 'syncToProgress').onFinishChange(function () {
                            if (pgSettings.syncToProgress) {
                                //                                syncLayerToZ();
                            }
                        });

                        gui.add(pgSettings, 'darkMode').onFinishChange(function (checked) {
                            var color = checked ? darkBackground : lightBackground;
                            scene.background = new THREE.Color(color);

                            // Apply dark mode CSS class
                            if (checked) {
                                $(".page-container").addClass("pgdarkmode");
                            } else {
                                $(".page-container").removeClass("pgdarkmode");
                            }

                            renderer.render(scene, camera);
                        });

                        gui.add(pgSettings, 'showMirror').onFinishChange(pgSettings.reloadGcode);
                        gui.add(pgSettings, 'orbitWhenIdle');
                        gui.add(pgSettings, 'fatLines').onFinishChange(pgSettings.reloadGcode);
                        //gui.add(pgSettings, 'reflections');
                        gui.add(pgSettings, 'antialias').onFinishChange(function () {
                            new PNotify({
                                title: "Reload page required",
                                text: "Antialias chenges won't take effect until you refresh the page",
                                type: "info"

                            });
                            //alert("Antialias chenges won't take effect until you refresh the page");
                        });

                        gui.add(pgSettings, 'showNozzle');

                        //gui.add(pgSettings, 'reloadGcode');

                        var folder = gui.addFolder('Windows');//hidden.
                        folder.add(pgSettings, 'showState').onFinishChange(updateWindowStates).listen();
                        folder.add(pgSettings, 'showWebcam').onFinishChange(updateWindowStates).listen();
                        folder.add(pgSettings, 'showFiles').onFinishChange(updateWindowStates).listen();
                        folder.add(pgSettings, 'showDash').onFinishChange(updateWindowStates).listen();

                        //dont show Windows. Automatically handled by toggle buttons
                        $(folder.domElement).attr("hidden", true);

                        // Apply dark mode on initial load if enabled
                        if (pgSettings.darkMode) {
                            $(".page-container").addClass("pgdarkmode");
                        }

                    }

                    initThree();

                    //load Nozzle model.
                    var objloader = new THREE.OBJLoader();
                    objloader.load('plugin/prettygcode/static/js/models/ExtruderNozzle.obj', function (obj) {
                        obj.quaternion.setFromEuler(new THREE.Euler(Math.PI / 2, 0, 0));
                        obj.scale.setScalar(0.1)
                        obj.position.set(0, 0, 10);
                        obj.name = "nozzle";
                        var nozzleMaterial = new THREE.MeshStandardMaterial({
                            metalness: 1,   // between 0 and 1
                            roughness: 0.5, // between 0 and 1
                            envMap: cubeCamera.renderTarget.texture,
                            color: new THREE.Color(0xba971b),
                            //flatShading:false,
                        });
                        obj.children.forEach(function (e, i) {
                            if (e instanceof THREE.Mesh) {
                                e.material = nozzleMaterial;
                                //e.geometry.computeVertexNormals();
                            }
                        })
                        nozzleModel = obj;
                        scene.add(obj);
                    });

                    //GCode loader.
                    gcodeProxy = new GCodeParser();
                    var gcodeObject = gcodeProxy.getObject();
                    gcodeObject.position.set(-0, -0, 0);
                    scene.add(gcodeObject);

                    if (curJobName != "")
                        gcodeProxy.loadGcode('downloads/files/local/' + curJobName);

                    if (false) {
                        //terminal parser
                        terminalGcodeProxy = new GCodeParser();
                        terminalGcodeProxy.addSegment = function (p1, p2) {
                            //console.log(["addSegment",p1,p2])
                            if (currentLayer === undefined) {
                                newLayer(p1);
                            }
                        }
                        var terminalGcodeObject = terminalGcodeProxy.getObject();
                        terminalGcodeObject.position.set(100, -0, 0);
                        scene.add(terminalGcodeObject);
                    }

                    //note this is an octoprint version of a bootstrap slider. not a jquery ui slider. 
                    $('.gwin').append($('<div id="myslider-vertical" style=""></div>'));
                    $("#myslider-vertical").slider({
                        id: "myslider",
                        orientation: "vertical",
                        reversed: true,
                        range: "min",
                        min: 0,
                        max: 100,
                        value: 100,
                    }).on("slide", function (event, ui) {
                        currentLayerNumber = event.value;
                        $("#myslider .slider-handle").text(currentLayerNumber);
                    }).on("slideStart", function (event, ui) {
                        //console.log("slideStart");
                        forceNoSync = true;
                    }).on("slideStop", function (event, ui) {
                        //console.log("slideStop");
                        forceNoSync = false;
                    });
                    $("#myslider").attr("style", "height:90%;position:absolute;top:5%;right:20px")



                    //Create a web camera inset for the view. 
                    var camView = $("#webcam_rotator").clone();
                    let img = camView.find("#webcam_image")
                    img.attr("id", "pg_webcam_image")
                    $(".gwin").append(camView)

                    //check url for fullscreen mode
                    if (urlParam("fullscreen"))
                        $(".page-container").addClass("pgfullscreen");

                    //setup window toggle buttons
                    $(".fstoggle").on("click", function () {
                        $(".page-container").toggleClass("pgfullscreen");
                    });
                    $(".pgsettingstoggle").on("click", function () {
                        $("#mygui").toggleClass("pghidden");
                    });
                    $(".pgstatetoggle").on("click", function () {
                        pgSettings.showState = !pgSettings.showState;
                        updateWindowStates();
                    });
                    $(".pgfilestoggle").on("click", function () {
                        pgSettings.showFiles = !pgSettings.showFiles;
                        updateWindowStates();
                    });
                    $(".pgcameratoggle").on("click", function () {
                        pgSettings.showWebcam = !pgSettings.showWebcam;
                        updateWindowStates();
                    });
                    $(".pgdashtoggle").on("click", function () {
                        pgSettings.showDash = !pgSettings.showDash;;
                        updateWindowStates();
                    });
                    updateWindowStates();
                }

                //Activate webcam view in window. 
                // Use modern OctoPrint webcam API if available (OctoPrint 1.9+)
                var webcamUrl = null;
                if (self.settings && self.settings.webcam && self.settings.webcam.streamUrl) {
                    webcamUrl = self.settings.webcam.streamUrl();
                }

                // Fallback to legacy API if modern API not available
                if (!webcamUrl) {
                    webcamUrl = "/webcam/?action=stream";
                }

                $(".gwin #pg_webcam_image").attr("src", webcamUrl + "&" + Math.random());

                // Ensure webcam is enabled even if controlViewModel isn't ready yet
                if (self.controlViewModel && typeof self.controlViewModel._enableWebcam === 'function') {
                    self.controlViewModel._enableWebcam();
                }

            } else if (previous == "#tab_plugin_prettygcode") {
                //todo. disable animation 

                //Disable camera when tab isnt visible.
                $(".gwin #pg_webcam_image").attr("src", "")
                if (self.controlViewModel && typeof self.controlViewModel._disableWebcam === 'function') {
                    self.controlViewModel._disableWebcam();
                }
            }

            // Re-enable webcam for control tab if it exists
            if (self.controlViewModel && typeof self.controlViewModel._enableWebcam === 'function') {
                self.controlViewModel._enableWebcam();
            }
        };

        //util function
        String.prototype.hashCode = function () {
            var hash = 0, i, chr;
            if (this.length === 0) return hash;
            for (i = 0; i < this.length; i++) {
                chr = this.charCodeAt(i);
                hash = ((hash << 5) - hash) + chr;
                hash |= 0; // Convert to 32bit integer
            }
            return hash;
        };

        //util function
        urlParam = function (name) {
            var results = new RegExp('[?&]' + name + '=([^&#]*)').exec(window.location.href);
            if (results == null) {
                return null;
            }
            return decodeURI(results[1]) || 0;
        }

        //Handle "focus" url param. Not used anymore.
        var focus = urlParam("focus");
        if (focus != null) {
            console.log("Focusing on:" + focus);
            $("body").children().hide();
            $("#webcam_container").hide();
            if (!focus.startsWith("."))
                focus = "#" + focus;
            var el = $(focus)[0];
            $("body").prepend(el);
        }

        function updateBedVolume() {
            var currentProfileData = self.printerProfiles.currentProfileData();
            if (!currentProfileData || !currentProfileData.volume) {
                return;
            }

            var volume = currentProfileData.volume;
            //console.log([arguments.callee.name,volume]);

            if (typeof volume.custom_box === "function") //check for custom bounds.
            {
                bedVolume = {
                    width: volume.width(),
                    height: volume.height(),
                    depth: volume.depth(),
                    origin: volume.origin(),
                    formFactor: volume.formFactor(),
                };
            }
            else {
                //console.log(["volume.custom_box",volume.custom_box]);
                bedVolume = {
                    width: volume.custom_box.x_max() - volume.custom_box.x_min(),
                    height: volume.custom_box.z_max() - volume.custom_box.z_min(),
                    depth: volume.custom_box.y_max() - volume.custom_box.y_min(),
                    origin: volume.origin(),
                    formFactor: volume.formFactor(),
                };
            }
        }

        function GCodeParser(data) {

            var state = { x: 0, y: 0, z: 0, e: 0, f: 0, extruding: false, relative: false };
            var layers = [];

            var currentLayer = undefined;

            var defaultColor = new THREE.Color('white');
            var curColor = defaultColor;
            var filePos = 0;//used for syncing when printing.

            var previousPiece = "";//used for parsing gcode in chunks.

            //material for fatlines
            var curMaterial = new THREE.LineMaterial({
                linewidth: 3, // in pixels
                //transparent: true,
                //opacity: 0.5,
                //color: new THREE.Color(curColorHex),// rainbow.getColor(layers.length % 64).getHex()
                vertexColors: THREE.VertexColors,
            });
            //todo. handle window resize
            //            curMaterial.resolution.set(gcodeWid, gcodeHei);
            curMaterial.resolution.set(500, 500);

            //for plain lines
            var curLineBasicMaterial = new THREE.LineBasicMaterial({
                color: 0xffffff,
                vertexColors: THREE.VertexColors
            });

            var gcodeGroup = new THREE.Group();
            gcodeGroup.name = 'gcode';

            //reset parser for another object.
            this.reset = function () {
                this.clearObject();
                state = { x: 0, y: 0, z: 0, e: 0, f: 0, extruding: false, relative: false };
                layers = [];
                currentLayer = undefined;
                curColor = defaultColor;
                filePos = 0;
                previousPiece = "";
            }
            this.getObject = function () {
                return gcodeGroup;
            }

            this.clearObject = function () {
                if (gcodeGroup) {
                    for (var i = gcodeGroup.children.length - 1; i >= 0; i--) {
                        gcodeGroup.remove(gcodeGroup.children[i]);
                    }
                }
            }
            easeOutBounce = function (t, b, c, d) {
                if ((t /= d) < (1 / 2.75)) {
                    return c * (7.5625 * t * t) + b;
                } else if (t < (2 / 2.75)) {
                    return c * (7.5625 * (t -= (1.5 / 2.75)) * t + .75) + b;
                } else if (t < (2.5 / 2.75)) {
                    return c * (7.5625 * (t -= (2.25 / 2.75)) * t + .9375) + b;
                } else {
                    return c * (7.5625 * (t -= (2.625 / 2.75)) * t + .984375) + b;
                }
            }
            easeInBounce = function (t, b, c, d) {
                return c - easeOutBounce(d - t, 0, c, d) + b;
            };
            easeOutExpo = function (t, b, c, d) {
                return (t == d) ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b;
            }
            easeOutFall = function (t, b, c, d) {
                var dist = 0.5 * 9.8 * (t * t)
                var per = (dist + b)
                return dist;
            }
            this.animateLayers = function (curTime, deltaTime) {
                if (true) {
                    var startZ = 100;
                    gcodeGroup.traverse(function (child) {
                        if (child.name.startsWith("layer#")) {
                            var udata = child.userData;

                            var dist = (2.0 - (curTime / 2)) * 100.0;

                            var newZ = Math.max(0, udata.layerNumber * dist);
                            child.position.set(0, 0, newZ);


                            // var startTime = udata.layerNumber/8.0;
                            // if(curTime>=startTime)
                            // {
                            //     var myTime = curTime-startTime;
                            //     var dist = 9.8*(myTime*myTime)
                            //     var newZ = Math.max(0,startZ-dist);
                            //     child.position.set(0,0,newZ);
                            // }
                            // else{
                            //     child.position.set(0,0,startZ);
                            // }
                        }
                    });
                } else {
                    gcodeGroup.traverse(function (child) {
                        if (child.name.startsWith("layer#")) {
                            var udata = child.userData;
                            var endTime = udata.layerNumber / 4.0;
                            if (curTime < endTime) {
                                var z = easeOutExpo(curTime, 0, 100, endTime);
                                //Math.sin(curTime+(udata.layerNumber*0.1))
                                child.position.set(0, 0, 100 - z);
                            }
                            else
                                child.position.set(0, 0, 0);
                        }
                    });

                }
            }
            this.highlightLayer = function (layerNumber, highlightMaterial) {
                var needUpdate = false;//only need update if visiblity changes
                var defaultMat = curLineBasicMaterial;
                if (pgSettings.fatLines) {
                    defaultMat = curMaterial;
                }

                gcodeGroup.traverse(function (child) {
                    if (child.name.startsWith("layer#")) {
                        if (child.userData.layerNumber < layerNumber) {
                            if (child.material.uuid != defaultMat.uuid) {
                                child.material = defaultMat;
                                needUpdate = true;
                            }
                        } else if (child.userData.layerNumber == layerNumber) {
                            if (child.material.uuid != highlightMaterial.uuid) {
                                child.material = highlightMaterial;
                                needUpdate = true;
                            }
                        }
                        else {
                            if (child.material.uuid != defaultMat.uuid) {
                                child.material = defaultMat;
                                needUpdate = true;
                            }
                        }
                    }
                });
                return (needUpdate);
            }

            this.syncGcodeObjToLayer = function (layerNumber, lineNumber = Infinity) {
                var needUpdate = false;//only need update if visiblity changes

                //hack comp for mirror.
                //todo. better handle of mirror object so this isnt needed. 
                if (pgSettings.showMirror && lineNumber != Infinity)
                    lineNumber = lineNumber * 2;

                gcodeGroup.traverse(function (child) {
                    if (child.name.startsWith("layer#")) {
                        if (child.userData.layerNumber < layerNumber) {

                            if (!child.visible || child.geometry.maxInstancedCount != child.userData.numLines)
                                needUpdate = true;

                            child.visible = true;
                            child.geometry.maxInstancedCount = child.userData.numLines;
                        } else if (child.userData.layerNumber == layerNumber) {
                            if (!child.visible || child.geometry.maxInstancedCount != Math.min(lineNumber, child.userData.numLines))
                                needUpdate = true;

                            child.visible = true;
                            child.geometry.maxInstancedCount = Math.min(lineNumber, child.userData.numLines);
                        }
                        else {
                            if (child.visible)
                                needUpdate = true;

                            child.visible = false;
                        }
                    }
                });
                return (needUpdate);
            }
            this.syncGcodeObjTo = function (layerZ, lineNumber = Infinity) {
                //hack comp for mirror.
                //todo. better handle of mirror object so this isnt needed. 
                if (pgSettings.showMirror && lineNumber != Infinity)
                    lineNumber = lineNumber * 2;

                gcodeGroup.traverse(function (child) {
                    if (child.name.startsWith("layer#")) {
                        if (child.userData.layerZ < layerZ) {
                            child.visible = true;

                            child.geometry.maxInstancedCount = child.userData.numLines;
                        } else if (child.userData.layerZ == layerZ) {
                            child.visible = true;
                            child.geometry.maxInstancedCount = Math.min(lineNumber, child.userData.numLines);
                        }
                        else {
                            child.visible = false;
                        }
                    }
                });
            }
            this.syncGcodeObjToFilePos = function (filePosition) {
                let syncLayerNumber = 0;//derived layer number based on pos and user data.
                gcodeGroup.traverse(function (child) {
                    if (child.name.startsWith("layer#")) {
                        var filePositions = child.userData.filePositions;
                        var fpMin = filePositions[0];
                        var fpMax = filePositions[filePositions.length];
                        if (fpMax < filePosition) { //way before.
                            child.visible = true;

                            child.geometry.maxInstancedCount = child.userData.numLines;
                        } else if (fpMin > filePosition) { //way after
                            child.visible = false;
                        } else //must be during. right?
                        {
                            child.visible = true;

                            //count number of lines before filePos
                            var count = 0;
                            while (count < filePositions.length && filePositions[count] < filePosition)
                                count++;

                            //hack comp for mirror.
                            //todo. better handle of mirror object so this isnt needed. 
                            if (pgSettings.showMirror)
                                count = count * 2;

                            child.geometry.maxInstancedCount = Math.min(count, child.userData.numLines);

                            syncLayerNumber = child.userData.layerNumber
                        }
                    }
                });
                return syncLayerNumber;//used to sync other elements.
            }
            this.currentUrl = "";
            this.loadGcode = function (url) {
                this.reset();

                currentUrl = url;

                var parserObject = this;
                var file_url = url;//'downloads/files/local/xxx.gcode';
                var myRequest = new Request(file_url);
                fetch(myRequest)
                    .then(function (response) {
                        var contentLength = response.headers.get('Content-Length');
                        if (!response.body || !window['TextDecoder']) {
                            response.text().then(function (text) {
                                parserObject.parse(text);
                                parserObject.finishLoading();
                            });
                        } else {
                            var myReader = response.body.getReader();
                            var decoder = new TextDecoder();
                            var buffer = '';
                            var received = 0;
                            myReader.read().then(function processResult(result) {
                                if (result.done) {
                                    parserObject.finishLoading();
                                    return;
                                }
                                received += result.value.length;
                                //                buffer += decoder.decode(result.value, {stream: true});
                                /* process the buffer string */
                                parserObject.parse(decoder.decode(result.value, { stream: true }));

                                // read the next piece of the stream and process the result
                                return myReader.read().then(processResult);
                            })
                        }
                    })

            }
            this.finishLoading = function () {
                if (currentLayer !== undefined) {
                    addObject(currentLayer, true);
                }

                //update scene bounds.
                var bsize = new THREE.Vector3();
                sceneBounds.getSize(bsize);

                //update ui slider
                if ($("#myslider-vertical").length) {
                    $("#myslider-vertical").slider("setMax", layers.length)
                    $("#myslider-vertical").slider("setValue", layers.length, false, true)
                    $("#myslider .slider-handle").text(layers.length);

                    currentLayerNumber = layers.length;
                }

                console.log("Finished loading GCode object.")
                console.log(["layers:", layers.length, "size:", filePos])

                let totalLines = 0;
                for (let layer of layers) {
                    totalLines += layer.vertex.length / 6;
                }
                console.log(["lines:", totalLines])

                //console.log([sceneBounds,layers])

                //gcodeProxy.syncGcodeObjTo(Infinity);

                //updateDimensions(bsize); 

                //Move zoom camera to new bounds.
                var dist = Math.max(Math.abs(bsize.x), Math.abs(bsize.y)) / 2;
                dist = Math.max(20, dist);//min distance to model.
                //console.log(dist)
                cameraControls.dollyTo(dist * 2.0, true);
            }

            function addObject(layer, extruding) {

                if (layer.vertex.length > 2) { //Something to draw?
                    if (pgSettings.fatLines) {//fancy lines
                        var geo = new THREE.LineGeometry();
                        geo.setPositions(layer.vertex);
                        geo.setColors(layer.colors)
                        var line = new THREE.Line2(geo, curMaterial);
                        line.name = 'layer#' + layers.length;
                        line.userData = { layerZ: layer.z, layerNumber: layers.length, numLines: layer.vertex.length / 6, filePositions: layer.filePositions };// 6 because 2 x triplets
                        gcodeGroup.add(line);
                        //line.renderOrder = 2;
                    } else {//plain lines
                        var geo = new THREE.BufferGeometry();
                        geo.addAttribute('position', new THREE.BufferAttribute(new Float32Array(layer.vertex), 3));
                        geo.addAttribute('color', new THREE.BufferAttribute(new Float32Array(layer.colors), 3));
                        var line = new THREE.LineSegments(geo, curLineBasicMaterial);
                        line.name = 'layer#' + layers.length;
                        line.userData = { layerZ: layer.z, layerNumber: layers.length, numLines: layer.vertex.length / 6, filePositions: layer.filePositions };
                        gcodeGroup.add(line);

                    }
                }
            }

            function newLayer(line) {
                if (currentLayer !== undefined) {
                    addObject(currentLayer, true);
                }

                currentLayer = { vertex: [], pathVertex: [], z: line.z, colors: [], filePositions: [] };
                layers.push(currentLayer);
                //console.log("layer #" + layers.length + " z:" + line.z);

            }
            /*this.addArc= function (arc, material ) {
                // let geometry = new THREE.Geometry();
        
                // let start  = new THREE.Vector3(arc.x1, arc.y1, arc.z1);
                // let center = new THREE.Vector3(arc.i,  arc.j,  arc.k);
                // let end    = new THREE.Vector3(arc.x2, arc.y2, arc.z2);
        
                let radius = Math.sqrt(
                    Math.pow((arc.x1 - arc.i), 2) + Math.pow((arc.y1 - arc.j), 2)
                );
                let arcCurve = new THREE.ArcCurve(
                    arc.i, // aX
                    arc.j, // aY
                    radius, // aRadius
                    Math.atan2(arc.y1 - arc.j, arc.x1 - arc.i), // aStartAngle
                    Math.atan2(arc.y2 - arc.j, arc.x2 - arc.i), // aEndAngle
                    !!arc.isClockwise // isClockwise
                );
                let divisions = 10;
                let vertices = arcCurve.getPoints(divisions);
                let vectorthrees = [];
                for (var i = 0; i < vertices.length; i++) {
                    vectorthrees.push(new THREE.Vector3(vertices[i].x, vertices[i].y, arc.z1));
                }
                if (vectorthrees.length) {
                    let geometry = new THREE.Geometry();
                    geometry.vertices = vectorthrees;
                    object.add(new THREE.Line(geometry, material));
                }
            }*/
            this.addSegment = function (p1, p2) {
                if (currentLayer === undefined) {
                    newLayer(p1);
                }
                if (Number.isNaN(p1.x) || Number.isNaN(p1.y) || Number.isNaN(p1.z) || Number.isNaN(p2.x) || Number.isNaN(p2.y) || Number.isNaN(p2.z)) {
                    console.log(["Bad line segment", p1, p2]);
                    return;
                }

                currentLayer.vertex.push(p1.x, p1.y, p1.z);
                currentLayer.vertex.push(p2.x, p2.y, p2.z);
                currentLayer.filePositions.push(filePos);//save for syncing.

                if (curColor != defaultColor) {
                    sceneBounds.expandByPoint(p1);
                    sceneBounds.expandByPoint(p2);
                }

                if (pgSettings.showMirror) {
                    //add mirror version
                    currentLayer.vertex.push(p1.x, p1.y, -p1.z);
                    currentLayer.vertex.push(p2.x, p2.y, -p2.z);
                }

                if (true)//faux shading. Darken line color based on angle
                {
                    //var p1=new THREE.Vector3(10,10,0);
                    //var p2=new THREE.Vector3(15,15,0);

                    var per = 1.0;//bright
                    if (true) {
                        //var np2=new THREE.Vector3(p2.x,p2.y,p2.z);
                        var vec = new THREE.Vector3(p2.x - p1.x, p2.y - p1.y, p2.z - p1.z);
                        vec.normalize();
                        //                        per= Math.max(vec.dot(new THREE.Vector3(1,0,0)),0.0)
                        //                        per= Math.abs(vec.dot(new THREE.Vector3(1,0,0)),0.0)
                        per = (vec.dot(new THREE.Vector3(1, 0, 0)) / 2) + 0.5;
                        per = (per / 5.0);
                    } else {
                        var deltaX = p2.x - p1.x;
                        var deltaY = p2.y - p1.y;
                        var rad = Math.atan2(deltaY, deltaX);

                        rad = Math.abs(rad)
                        per = (rad) / (2.0 * 3.1415);
                        //console.log(rad + " " + per);
                    }
                    var drawColor = new THREE.Color(curColor)
                    var hsl = {}
                    drawColor.getHSL(hsl);

                    //darken every other line to make the layers easier to see.
                    if ((layers.length % 2) == 0)
                        hsl.l = per + 0.25;
                    else
                        hsl.l = per + 0.30;

                    drawColor.setHSL(hsl.h, hsl.s, hsl.l);
                    //console.log(drawColor.r + " " + drawColor.g + " " + drawColor.b )
                    currentLayer.colors.push(drawColor.r, drawColor.g, drawColor.b);
                    currentLayer.colors.push(drawColor.r, drawColor.g, drawColor.b);

                    if (pgSettings.showMirror) {
                        //add mirror version
                        drawColor.setHSL(hsl.h, hsl.s, hsl.l / 2);
                        currentLayer.colors.push(drawColor.r, drawColor.g, drawColor.b);
                        currentLayer.colors.push(drawColor.r, drawColor.g, drawColor.b);
                    }
                }
                else {
                    currentLayer.colors.push(curColor.r, curColor.g, curColor.b);
                    currentLayer.colors.push(curColor.r, curColor.g, curColor.b);
                }
            }

            function delta(v1, v2) {
                return state.relative ? v2 : v2 - v1;
            }

            function absolute(v1, v2) {
                return state.relative ? v1 + v2 : v2;
            }

            this.parse = function (chunk) {

                //remove comments from chunk.
                //var lines = chunk.replace(/;.+/g, '').split('\n');
                //or not
                var lines = chunk.split('\n');

                //handle partial lines from previous chunk.
                lines[0] = previousPiece + lines[0];
                previousPiece = lines[lines.length - 1];

                //note -1 so we dont process last line in case it is a partial.
                //Todo process the last line. Probably not needed since last line is usually gcode cleanup and not extruded lines.
                for (var i = 0; i < lines.length - 1; i++) {

                    filePos += lines[i].length + 1;//+1 because of split \n. 

                    //Process comments
                    //figure out line color from comments.
                    if (lines[i].indexOf(";") > -1) {
                        var cmdLower = lines[i].toLowerCase();
                        if (cmdLower.indexOf("inner") > -1) {
                            curColor = new THREE.Color(0x00ff00);//green
                        }
                        else if (cmdLower.indexOf("outer") > -1) {
                            curColor = new THREE.Color('red');
                        }
                        else if (cmdLower.indexOf("perimeter") > -1) {
                            curColor = new THREE.Color('red');
                        }
                        else if (cmdLower.indexOf("fill") > -1) {
                            curColor = new THREE.Color('orange');
                        }
                        else if (cmdLower.indexOf("skin") > -1) {
                            curColor = new THREE.Color('yellow');
                        }
                        else if (cmdLower.indexOf("support") > -1) {
                            curColor = new THREE.Color('skyblue');
                        }
                        else if (cmdLower.indexOf("skirt") > -1) {
                            curColor = new THREE.Color('skyblue');
                        }
                        else {
                            //var curColorHex = (Math.abs(cmd.hashCode()) & 0xffffff);
                            //curColor = new THREE.Color(curColorHex);
                            //console.log(cmd + ' ' + curColorHex.toString(16))
                        }
                        //console.log(lines[i])
                    }


                    //remove comments and process command part of line.
                    var tokens = lines[i].replace(/;.+/g, '').split(' ');
                    if (tokens.length < 1)
                        continue; //nothing left to process.

                    var cmd = tokens[0].toUpperCase();

                    //Arguments
                    var args = {};
                    tokens.splice(1).forEach(function (token) {
                        if (token[0] !== undefined) {
                            var key = token[0].toLowerCase();
                            var value = parseFloat(token.substring(1));
                            args[key] = value;
                        }
                    });

                    //G0/G1 - Linear Movement
                    if (cmd === 'G0' || cmd === 'G1') {
                        var line = {
                            x: args.x !== undefined ? absolute(state.x, args.x) : state.x,
                            y: args.y !== undefined ? absolute(state.y, args.y) : state.y,
                            z: args.z !== undefined ? absolute(state.z, args.z) : state.z,
                            e: args.e !== undefined ? absolute(state.e, args.e) : state.e,
                            f: args.f !== undefined ? absolute(state.f, args.f) : state.f,
                        };
                        //Layer change detection is or made by watching Z, it's made by watching when we extrude at a new Z position
                        if (delta(state.e, line.e) > 0) {
                            var diff = delta(state.e, line.e);
                            line.extruding = delta(state.e, line.e) > 0;
                            if (currentLayer == undefined || line.z != currentLayer.z) {
                                newLayer(line);
                            }
                        }

                        //make sure extruding is updated. might not be needed.
                        //line.extruding = delta(state.e, line.e) > 0;
                        //if (line.extruding)
                        //    addSegment(state, line);//only if extruding right now.

                        //If E is defined in the args then extruding. Todo. is this right?
                        if (args.e !== undefined)
                            this.addSegment(state, line);//only if extruding right now.
                        state = line;
                    } else if (cmd === 'G2' || cmd === 'G3') {
                        //G2/G3 - Arc Movement ( G2 clock wise and G3 counter clock wise )
                        // Not supporting K ATM
                        if (args.k !== undefined) {
                            // I have no idea what K is for...
                            console.warn('THREE.GCodeLoader: Arcs with K parameter not currently supported');
                        }
                        else if (args.r !== undefined) {
                            console.warn('THREE.GCodeLoader: Arc in R form are not currently supported.');
                        }
                        else {
                            var arc = {
                                x: args.x !== undefined ? absolute(state.x, args.x) : state.x,
                                y: args.y !== undefined ? absolute(state.y, args.y) : state.y,
                                z: args.z !== undefined ? absolute(state.z, args.z) : state.z,
                                i: args.i !== undefined ? args.i : 0,
                                j: args.j !== undefined ? args.j : 0,
                                r: args.r !== undefined ? args.r : null,
                                // What is this K I'm seeing here, lol
                                //k: args.k !== undefined ? absolute( state.k, args.k ) : state.k,
                                e: args.e !== undefined ? absolute(state.e, args.e) : state.e,
                                f: args.f !== undefined ? absolute(state.f, args.f) : state.f,
                                is_clockwise: cmd === 'G2'
                            };
                            /*  If R format is working, this could be used.  I have no test code so I can't verify
                            if ((arc.i || arc.j) && arc.r)
                            {
                                console.warn('THREE.GCodeLoader: Arc contains I/J and R, which is not allowed.  Removing R');
                                arc.r = null;
                            }
                            else
                            {
                                var segments = self.interpolateArc(state, arc);
                                for(var index = 1; index < segments.length; index++)
                                {
                                    this.addSegment(segments[index-1], segments[index]);
                                }
                            }*/
                            var segments = self.interpolateArc(state, arc);
                            for (var index = 1; index < segments.length; index++) {
                                this.addSegment(segments[index - 1], segments[index]);
                            }
                            // Set the state to the last segment
                            state = segments[segments.length - 1];
                        }
                    } else if (cmd === 'G90') {
                        //G90: Set to Absolute Positioning
                        state.relative = false;
                    } else if (cmd === 'G91') {
                        //G91: Set to state.relative Positioning
                        state.relative = true;
                    } else if (cmd === 'G92') {
                        //G92: Set Position
                        var line = state;
                        line.x = args.x !== undefined ? args.x : line.x;
                        line.y = args.y !== undefined ? args.y : line.y;
                        line.z = args.z !== undefined ? args.z : line.z;
                        line.e = args.e !== undefined ? args.e : line.e;
                        state = line;
                    } else {
                        //console.warn( 'THREE.GCodeLoader: Command not supported:' + cmd );
                    }
                }
            }

        };

        //todo move to new file or remove.
        function updateDimensions(bsize) {

            if (dimensionsGroup === undefined) {
                dimensionsGroup = new THREE.Group();
                dimensionsGroup.name = 'dimensions';
                scene.add(dimensionsGroup);
            }

            var fontLoader = new THREE.FontLoader();
            fontLoader.load('plugin/prettygcode/static/js/helvetiker_bold.typeface.json', function (font) {
                var xMid, text;
                var color = 0x006699;
                var matDark = new THREE.LineBasicMaterial({
                    color: color,
                    side: THREE.DoubleSide
                });
                var matLite = new THREE.MeshBasicMaterial({
                    color: color,
                    transparent: true,
                    opacity: 0.8,
                    side: THREE.DoubleSide
                });
                var center = new THREE.Vector3(0, 0, 0);
                sceneBounds.getCenter(center);
                //console.log(["center",center]);
                //clear out any old lines
                for (var i = dimensionsGroup.children.length - 1; i >= 0; i--) {
                    dimensionsGroup.remove(dimensionsGroup.children[i]);
                }
                var textHeight = 3;
                var textZ = 0.2;
                var message = bsize.x.toFixed(2) + " MM";
                var shapes = font.generateShapes(message, textHeight);
                var geometry = new THREE.ShapeBufferGeometry(shapes);
                geometry.computeBoundingBox();
                xMid = -0.5 * (geometry.boundingBox.max.x - geometry.boundingBox.min.x);
                geometry.translate(xMid, 0, 0);
                // make shape ( N.B. edge view not visible )
                text = new THREE.Mesh(geometry, matLite);
                text.position.set(center.x, sceneBounds.min.y - (textHeight * 2), textZ);
                dimensionsGroup.add(text);
                var lineMat = new THREE.LineMaterial({
                    linewidth: 6,
                    color: color
                });
                lineMat.resolution.set(gcodeWid, gcodeHei);
                var lineGeo = new THREE.LineGeometry();
                var lineVerts = [
                    sceneBounds.min.x, sceneBounds.min.y - (textHeight * 0.8), textZ,
                    sceneBounds.max.x, sceneBounds.min.y - (textHeight * 0.8), textZ,
                    sceneBounds.min.x, sceneBounds.min.y - 1, textZ,
                    sceneBounds.min.x, sceneBounds.min.y - (textHeight * 1.2), textZ,
                    sceneBounds.max.x, sceneBounds.min.y - 1, textZ,
                    sceneBounds.max.x, sceneBounds.min.y - (textHeight * 1.2), textZ,
                ];
                lineGeo.setPositions(lineVerts);
                var line = new THREE.Line2(lineGeo, lineMat);
                dimensionsGroup.add(line);
                var textHeight = 3;
                var message = bsize.y.toFixed(2) + " MM";
                var shapes = font.generateShapes(message, textHeight);
                var geometry = new THREE.ShapeBufferGeometry(shapes);
                geometry.computeBoundingBox();
                xMid = -0.5 * (geometry.boundingBox.max.x - geometry.boundingBox.min.x);
                geometry.translate(xMid, 0, 0);
                geometry.rotateZ(Math.PI / 2);
                // make shape ( N.B. edge view not visible )
                text = new THREE.Mesh(geometry, matLite);
                text.position.set(sceneBounds.max.x + (textHeight * 2), center.y, textZ);
                dimensionsGroup.add(text);
                var lineGeo = new THREE.LineGeometry();
                var lineVerts = [
                    sceneBounds.max.x + (textHeight * 0.8), sceneBounds.min.y, textZ,
                    sceneBounds.max.x + (textHeight * 0.8), sceneBounds.max.y, textZ,
                    sceneBounds.max.x + 1, sceneBounds.min.y, textZ,
                    sceneBounds.max.x + (textHeight * 1.2), sceneBounds.min.y, textZ,
                    sceneBounds.max.x + 1, sceneBounds.max.y, textZ,
                    sceneBounds.max.x + (textHeight * 1.2), sceneBounds.max.y, textZ,
                ];
                lineGeo.setPositions(lineVerts);
                var line = new THREE.Line2(lineGeo, lineMat);
                dimensionsGroup.add(line);
                var textHeight = 3;
                var message = bsize.z.toFixed(2) + " MM";
                var shapes = font.generateShapes(message, textHeight);
                var geometry = new THREE.ShapeBufferGeometry(shapes);
                geometry.computeBoundingBox();
                xMid = 0; // - 0.5 * ( geometry.boundingBox.max.x - geometry.boundingBox.min.x );
                geometry.translate(xMid, 0, 0);
                geometry.rotateX(Math.PI / 2);
                // make shape ( N.B. edge view not visible )
                text = new THREE.Mesh(geometry, matLite);
                text.position.set(sceneBounds.max.x + (textHeight * 1), sceneBounds.max.y, center.z);
                dimensionsGroup.add(text);
                var lineGeo = new THREE.LineGeometry();
                var lineVerts = [
                    sceneBounds.max.x + (textHeight * 0.8), sceneBounds.max.y + (textHeight * 0.8), 0,
                    sceneBounds.max.x + (textHeight * 0.8), sceneBounds.max.y + (textHeight * 0.8), bsize.z,
                ];
                lineGeo.setPositions(lineVerts);
                var line = new THREE.Line2(lineGeo, lineMat);
                dimensionsGroup.add(line);
            });
        }

        function resizeCanvasToDisplaySize() {
            const canvas = renderer.domElement;
            // look up the size the canvas is being displayed
            const width = canvas.clientWidth;
            const height = canvas.clientHeight;

            // adjust displayBuffer size to match
            if (canvas.width !== width || canvas.height !== height) {
                // you must pass false here or three.js sadly fights the browser
                renderer.setSize(width, height, false);
                camera.aspect = width / height;
                camera.updateProjectionMatrix();
                gcodeWid = width;
                gcodeHei = height;
                cameraControls.setViewport(0, 0, width, height);
                return true;//update needed. 
            }
            return false;//no update needed
        }

        function initThree() {
            renderer = new THREE.WebGLRenderer({ canvas: document.getElementById("mycanvas"), antialias: pgSettings.antialias });
            //todo. is this right?
            renderer.setPixelRatio(window.devicePixelRatio);

            //renderer2 = new THREE.WebGLRenderer({ canvas: document.getElementById("pipcanvas") });
            //todo. is this right?
            //renderer2.setPixelRatio(window.devicePixelRatio*3.0);


            //todo allow save/pos camera at start.
            camera = new THREE.PerspectiveCamera(70, 2, 0.1, 10000);
            camera.up.set(0, 0, 1);
            camera.position.set(bedVolume.width, 0, 50);

            CameraControls.install({ THREE: THREE });
            clock = new THREE.Clock();

            var canvas = $("#mycanvas");
            cameraControls = new CameraControls(camera, canvas[0]);

            //todo handle other than lowerleft
            resetCamera();

            lightBackground = 0xd0d0d0;
            darkBackground = 0x000000;

            //for debugging
            window.myCameraControls = cameraControls;

            //scene
            scene = new THREE.Scene();
            if (pgSettings.darkMode) {
                scene.background = new THREE.Color(darkBackground);
            } else {
                scene.background = new THREE.Color(lightBackground);
            }

            //for debugging
            window.myScene = scene;

            //add a light. might not be needed.
            var light = new THREE.PointLight(0xffffff);
            light.position.set(0, 0, -bedVolume.height);
            scene.add(light);

            // light = new THREE.PointLight(0xffffff);
            // light.position.set(bedVolume.width/2, bedVolume.depth/2,bedVolume.height);
            // scene.add(light);

            cameraLight = new THREE.PointLight(0xffffff);
            cameraLight.position.copy(camera.position);
            scene.add(cameraLight);

            // light = new THREE.AmbientLight( 0xffffff ); // soft white light
            // scene.add( light );

            // light = new THREE.PointLight(0xffffff);
            // light.position.copy(camera.position);
            // scene.add(light);


            //Semi-transparent plane to represent the bed. 
            updateGridMesh();

            cubeCamera = new THREE.CubeCamera(1, 100000, 128);
            cubeCamera.position.set(bedVolume.width / 2, bedVolume.depth / 2, 10);
            scene.add(cubeCamera);
            cubeCamera.update(renderer, scene);

            var syncSavedZ = 0;
            var cameraIdleTime = 0;
            var firstFrame = true;                 /*possible bug fix. this might not be needed.*/

            //material for fatline highlighter
            var highlightMaterial = undefined;

            if (pgSettings.fatLines) {
                highlightMaterial = new THREE.LineMaterial({
                    linewidth: 4, // in pixels
                    //transparent: true,
                    //opacity: 0.5,
                    //color: new THREE.Color(curColorHex),// rainbow.getColor(layers.length % 64).getHex()
                    vertexColors: THREE.VertexColors,
                });
                highlightMaterial.resolution.set(500, 500);
            } else {
                //highlightMaterial=
            }

            function animate() {

                const delta = clock.getDelta();
                const elapsed = clock.getElapsedTime();

                var needRender = false;

                /*possible bug fix. this might not be needed.*/
                if (firstFrame) {
                    needRender = true;
                    firstFrame = false;
                }

                if (printHeadSim) {
                    printHeadSim.updatePosition(delta);
                }
                if (curPrinterState &&
                    (curPrinterState.flags.printing || curPrinterState.flags.paused) &&
                    pgSettings.syncToProgress && (!forceNoSync)) {
                    if (nozzleModel && printHeadSim) {
                        var curState = printHeadSim.getCurPosition();
                        nozzleModel.position.copy(curState.position);
                        needRender = true;
                    }
                    if (gcodeProxy) {
                        var calculatedLayer = gcodeProxy.syncGcodeObjToFilePos(curPrintFilePos);
                        if (highlightMaterial !== undefined) {
                            gcodeProxy.highlightLayer(calculatedLayer, highlightMaterial);
                        }

                        $("#myslider-vertical").slider('setValue', calculatedLayer, false, true);
                        $("#myslider .slider-handle").text(calculatedLayer);

                        needRender = true;
                        //    gcodeProxy.syncGcodeObjTo(curState.layerZ,curState.lineNumber-1/*-window.fudge*/);//todo. figure out why *2 is needed.
                    }
                } else {
                    if (nozzleModel && nozzleModel.position.lengthSq()) {
                        nozzleModel.position.set(0, 0, 0);//todo. hide instead/also?
                        needRender = true;
                    }

                    if (gcodeProxy) {
                        if (gcodeProxy.syncGcodeObjToLayer(currentLayerNumber)) {
                            if (highlightMaterial !== undefined) {
                                gcodeProxy.highlightLayer(currentLayerNumber, highlightMaterial);
                            }
                            needRender = true;
                            //console.log("GCode Proxy needs update");
                        }
                    }

                }

                //show or hide nozzle based on settings.
                if (nozzleModel && nozzleModel.visible != pgSettings.showNozzle) {
                    nozzleModel.visible = pgSettings.showNozzle;
                    needRender = true;
                }

                if (highlightMaterial !== undefined) {
                    //fake a glow by ramping the diffuse color.
                    let nv = 0.5 + ((Math.sin(elapsed * 4) + 1) / 4.0);
                    //console.log(nv);
                    //highlightMaterial.uniforms.linewidth.value=nv*15;
                    nv = 0.5;
                    highlightMaterial.uniforms.diffuse.value.r = nv;
                    highlightMaterial.uniforms.diffuse.value.g = nv;
                    highlightMaterial.uniforms.diffuse.value.b = nv;
                }


                //if(gcodeProxy)
                //    gcodeProxy.animateLayers(elapsed)



                cameraControls.dollyToCursor = true;//todo. needed every frame?
                const updated = cameraControls.update(delta);//handle mouse/keyboard etc.
                if (updated)//did user move the camera?
                {
                    cameraIdleTime = 0;
                    needRender = true;
                }
                else {
                    cameraIdleTime += delta;
                    if (pgSettings.orbitWhenIdle && cameraIdleTime > 5) {
                        cameraControls.rotate(delta / 5.0, 0, false);//auto orbit camera a bit.
                        cameraControls.update(delta);//force update so it wont look like manual move next frame.
                        needRender = true;
                    }
                }

                if (cameraLight) {
                    cameraLight.position.copy(camera.position);
                }

                if (resizeCanvasToDisplaySize())
                    needRender = true;

                if (needRender) {
                    // //do real time reflections. Probably overkill. Certianly overkill.
                    // if(pgSettings.reflections && cubeCamera && nozzleModel)
                    // {
                    //     cubeCamera.position.copy( nozzleModel.position );
                    //     cubeCamera.position.z=cubeCamera.position.z+10;
                    //     nozzleModel.visible=false;
                    //     cubeCamera.update( renderer, scene );
                    //     nozzleModel.visible=true;
                    // }

                    renderer.render(scene, camera);
                } else {
                    //console.log("idle");
                }

                //renderer2.render(scene, camera);
                requestAnimationFrame(animate);
            }

            animate();
        }

        function resetCamera() {

            if (!cameraControls)//Make sure controls exist. 
                return;

            if (bedVolume.origin == "lowerleft")
                cameraControls.setTarget(bedVolume.width / 2, bedVolume.depth / 2, 0, false);
            else
                cameraControls.setTarget(0, 0, 0, false);
        }

        function updateGridMesh() {
            //console.log("updateGridMesh");
            console.log(arguments.callee.name);

            if (!scene)//scene loaded yet?
                return;

            var existingPlane = scene.getObjectByName("plane");
            if (existingPlane)
                scene.remove(existingPlane);
            var existingGrid = scene.getObjectByName("grid");
            if (existingGrid)
                scene.remove(existingGrid);

            console.log([existingPlane, existingGrid]);

            var planeGeometry = new THREE.PlaneGeometry(bedVolume.width, bedVolume.depth);
            var planeMaterial = new THREE.MeshBasicMaterial({
                color: 0x909090,
                side: THREE.DoubleSide,
                transparent: true,
                opacity: 0.2,
            });
            var plane = new THREE.Mesh(planeGeometry, planeMaterial);
            plane.name = "plane";
            //todo handle other than lowerleft
            if (bedVolume.origin == "lowerleft")
                plane.position.set(bedVolume.width / 2, bedVolume.depth / 2, -0.1);
            //plane.quaternion.setFromEuler(new THREE.Euler(- Math.PI / 2, 0, 0));
            scene.add(plane);
            //make bed sized grid. 
            var grid = new THREE.GridHelper(bedVolume.width, bedVolume.width / 10, 0x000000, 0x888888);
            grid.name = "grid";
            //todo handle other than lowerleft
            if (bedVolume.origin == "lowerleft")
                grid.position.set(bedVolume.width / 2, bedVolume.depth / 2, 0);
            //if (pgSettings.transparency){
            grid.material.opacity = 0.6;
            grid.material.transparent = true;
            grid.quaternion.setFromEuler(new THREE.Euler(-Math.PI / 2, 0, 0));
            scene.add(grid);
        }
    }

    OCTOPRINT_VIEWMODELS.push({
        construct: PrettyGCodeViewModel,
        dependencies: ["settingsViewModel", "loginStateViewModel", "printerProfilesViewModel", "controlViewModel"],
        elements: ["#tab_plugin_prettygcode"]
    });


});