1 files changed, 308 insertions, 545 deletions

diff --git a/js/lib/geom/sub-path.js b/js/lib/geom/sub-path.js
index 7046673e..56c94df3 100755
--- a/js/lib/geom/sub-path.js
+++ b/js/lib/geom/sub-path.js
@@ -11,29 +11,6 @@ var GeomObj =       require("js/lib/geom/geom-obj").GeomObj;
 var AnchorPoint =   require("js/lib/geom/anchor-point").AnchorPoint;
 var MaterialsModel = require("js/models/materials-model").MaterialsModel;
 
-// TODO Those function do not seems to be used. We should remove them
-function SubpathOffsetPoint(pos, mapPos) {
-    this.Pos = [pos[0],pos[1],pos[2]];
-    this.CurveMapPos = [mapPos[0], mapPos[1], mapPos[2]];
-}
-
-function SubpathOffsetTriangle(v0, v1, v2) {
-    this.v0 = v0;
-    this.v1 = v1;
-    this.v2 = v2;
-    this.n = [0,0,1]; //replace with the actual cross product later
-}
-
-function sortNumberAscending(a,b){
-    return a-b;
-}
-function sortNumberDescending(a,b){
-    return b-a;
-}
-function SegmentIntersections(){
-    this.paramArray = [];
-}
-
 ///////////////////////////////////////////////////////////////////////
 // Class GLSubpath
 //      representation a sequence of cubic bezier curves.
@@ -44,49 +21,42 @@ var GLSubpath = function GLSubpath() {
     ///////////////////////////////////////////////////
     // Instance variables
     ///////////////////////////////////////////////////
+
+    // NOTE:
+    //  This class contains functionality to store piecewise cubic bezier paths.
+    //  The coordinates of the paths are always in local, canvas space.
+    //  That is, the Z coordinate can be ignored (for now), and the paths are essentially in 2D.
+    //  All coordinates of the '_Samples' should lie within [0,0] and [width, height],
+    //      where width and height refer to the dimensions of the canvas for this path.
+    //  Whenever the the canvas dimensions change, the coordinates of the anchor points
+    //      and _Samples must be re-computed.
+
     this._Anchors = [];
     this._BBoxMin = [0, 0, 0];
     this._BBoxMax = [0, 0, 0];
+    this._canvasCenterLocalCoord = [0,0,0];
+
     this._isClosed = false;
 
-    this._samples = [];                 //polyline representation of this curve
-    this._sampleParam = [];            //parametric distance of samples, within [0, N], where N is # of Bezier curves (=# of anchor points if closed, =#anchor pts -1 if open)
-    this._anchorSampleIndex = [];       //index within _samples corresponding to anchor points
-    
-    this._UnprojectedAnchors = [];
+    this._Samples = [];                 //polyline representation of this curve in canvas space
+    this._sampleParam = [];             //parametric distance of samples, within [0, N], where N is # of Bezier curves (=# of anchor points if closed, =#anchor pts -1 if open)
+    this._anchorSampleIndex = [];       //index within _Samples corresponding to anchor points
 
-    //initially set the _dirty bit so we will construct samples
+    //initially set the _dirty bit so we will re-construct _Anchors and _Samples
     this._dirty = true;
 
-    //whether or not to use the canvas drawing to stroke/fill
-    this._useCanvasDrawing = true;
-
-    //the canvas that will draw this subpath
-    this._canvas = null;
-    
-    //the X and Y location of this subpath's canvas in stage world space of Ninja
-    this._canvasX = 0;
-    this._canvasY = 0;
-
     //stroke information
-    this._strokeWidth = 0.0;
+    this._strokeWidth = 1.0;
     this._strokeColor = [0.4, 0.4, 0.4, 1.0];
-    this._strokeMaterial = null
-    this._strokeStyle = "Solid";
-    this._materialAmbient = [0.2, 0.2, 0.2, 1.0];
-    this._materialDiffuse = [0.4, 0.4, 0.4, 1.0];
-    this._materialSpecular = [0.4, 0.4, 0.4, 1.0];
     this._fillColor = [1.0, 1.0, 1.0, 0.0];
-    this._fillMaterial = null;
     this._DISPLAY_ANCHOR_RADIUS = 5;
+
     //drawing context
     this._world = null;
+    this._canvas = null; //todo this might be unnecessary (but faster) since we can get it from the world
 
     //tool that owns this subpath
     this._drawingTool = null;
-    this._planeMat = null;
-    this._planeMatInv = null;
-    this._planeCenter = null;
 
     //used to query what the user selected, OR-able for future extensions
     this.SEL_NONE = 0;          //nothing was selected
@@ -98,8 +68,6 @@ var GLSubpath = function GLSubpath() {
     this._selectedAnchorIndex = -1;
 
     this._SAMPLING_EPSILON = 0.5; //epsilon used for sampling the curve
-    this._DEFAULT_STROKE_WIDTH = 20; //use only if stroke width not specified
-    this._MAX_OFFSET_ANGLE = 10; //max angle (in degrees) between consecutive vectors from curve to offset path
 
     // (current GeomObj complains if buildBuffers/render is added to GLSubpath prototype)
     //buildBuffers
@@ -115,36 +83,39 @@ var GLSubpath = function GLSubpath() {
         // get the world
         var world = this.getWorld();
         if (!world)  throw( "null world in subpath render" );
-
-         // get the context
+        if (!this._canvas){
+            //set the canvas by querying the world
+            this._canvas = this.getWorld().getCanvas();
+        }
+        // get the context
         var ctx = world.get2DContext();
-        if (!ctx)  throw ("null context in subpath render")
+        if (!ctx)  throw ("null context in subpath render");
 
         var numAnchors = this.getNumAnchors();
         if (numAnchors === 0) {
             return; //nothing to do for empty paths
         }
+        this.createSamples(false); //dirty bit checked in this function...will generate a polyline representation
 
-        ctx.save();
-
-        this.createSamples(); //dirty bit checked in this function...will generate a polyline representation
-        var bboxMin = this.getBBoxMin();
-        var bboxMax = this.getBBoxMax();
-        var bboxWidth = bboxMax[0] - bboxMin[0];
-        var bboxHeight = bboxMax[1] - bboxMin[1];
-        var bboxMid = [0.5 * (bboxMax[0] + bboxMin[0]), 0.5 * (bboxMax[1] + bboxMin[1]), 0.5 * (bboxMax[2] + bboxMin[2])];
-
-        if (this._canvas) {
-            CanvasController.setProperty(this._canvas, "width", bboxWidth+"px");
-            CanvasController.setProperty(this._canvas, "height", bboxHeight+"px");
-            this._canvas.elementModel.shapeModel.GLWorld.setViewportFromCanvas(this._canvas);
+        var numPoints = this._Samples.length;
+        if (numPoints === 0){
+            return; //nothing to do for empty paths
         }
+        
+        //figure the size of the area we will draw into
+        var bboxWidth=0, bboxHeight=0;
+        bboxWidth = this._BBoxMax[0] - this._BBoxMin[0];
+        bboxHeight = this._BBoxMax[1] - this._BBoxMin[1];
+
+        ctx.save();
         ctx.clearRect(0, 0, bboxWidth, bboxHeight);
 
         ctx.lineWidth = this._strokeWidth;
         ctx.strokeStyle = "black";
         if (this._strokeColor) {
-            ctx.strokeStyle = MathUtils.colorToHex( this._strokeColor );
+            //ctx.strokeStyle = MathUtils.colorToHex( this._strokeColor );
+            var strokeColorStr = "rgba("+parseInt(255*this._strokeColor[0])+","+parseInt(255*this._strokeColor[1])+","+parseInt(255*this._strokeColor[2])+","+this._strokeColor[3]+")";
+            ctx.strokeStyle = strokeColorStr;
         }
 
         ctx.fillStyle = "white";
@@ -152,14 +123,15 @@ var GLSubpath = function GLSubpath() {
             //ctx.fillStyle = MathUtils.colorToHex( this._fillColor );
             var fillColorStr = "rgba("+parseInt(255*this._fillColor[0])+","+parseInt(255*this._fillColor[1])+","+parseInt(255*this._fillColor[2])+","+this._fillColor[3]+")";
             ctx.fillStyle = fillColorStr;
-            console.log("Fill color:" + fillColorStr);
         }
         var lineCap = ['butt','round','square'];
         ctx.lineCap = lineCap[1];
-        ctx.beginPath();
+        var lineJoin = ['round','bevel','miter'];
+        ctx.lineJoin = lineJoin[0];
 
         /*
         commenting this out for now because of Chrome bug where coincident endpoints of bezier curve cause the curve to not be rendered
+        ctx.beginPath();
         var prevAnchor = this.getAnchor(0);
         ctx.moveTo(prevAnchor.getPosX()-bboxMin[0],prevAnchor.getPosY()-bboxMin[1]);
         for (var i = 1; i < numAnchors; i++) {
@@ -176,13 +148,13 @@ var GLSubpath = function GLSubpath() {
         */
 
 
-        var numPoints = this._samples.length/3;
-        ctx.moveTo(this._samples[0]-bboxMin[0],this._samples[1]-bboxMin[1]);
+        ctx.beginPath();
+        ctx.moveTo(this._Samples[0][0],this._Samples[0][1]);
         for (var i=0;i<numPoints;i++){
-            ctx.lineTo(this._samples[3*i]-bboxMin[0],this._samples[3*i + 1]-bboxMin[1]);
+            ctx.lineTo(this._Samples[i][0],this._Samples[i][1]);
         }
         if (this._isClosed === true) {
-            ctx.lineTo(this._samples[0]-bboxMin[0],this._samples[1]-bboxMin[1]);
+            ctx.lineTo(this._Samples[0][0],this._Samples[0][1]);
         }
         ctx.fill();
         ctx.stroke();
@@ -265,18 +237,21 @@ GLSubpath.prototype = new GeomObj();
 /////////////////////////////////////////////////////////
 // Property Accessors/Setters
 /////////////////////////////////////////////////////////
-GLSubpath.prototype.setCanvas = function (c) {
-    this._canvas = c;