first phase of simple resampling to prevent tiny segments

2 files changed, 138 insertions, 86 deletions

diff --git a/js/helper-classes/RDGE/GLBrushStroke.js b/js/helper-classes/RDGE/GLBrushStroke.js
index fdf1595c..59017a0c 100644
--- a/js/helper-classes/RDGE/GLBrushStroke.js
+++ b/js/helper-classes/RDGE/GLBrushStroke.js
@@ -67,7 +67,23 @@ function GLBrushStroke() {
 
     this.getNumPoints = function () { return this._Points.length; }
     this.getPoint = function (index) { return this._Points[index]; }
-    this.addPoint = function (anchorPt) { this._Points.push(anchorPt); this._dirty=true; }
+    this.addPoint = function (pt)
+    {
+        //add the point if it is some epsilon away from the previous point
+        var doAddPoint=true;
+        var numPoints = this._Points.length;
+        if (numPoints>0) {
+            var prevPt = this._Points[numPoints-1];
+            var diffPt = [prevPt[0]-pt[0], prevPt[1]-pt[1]];
+            var diffPtMag = diffPt[0]*diffPt[0] + diffPt[1]*diffPt[1];
+            if (diffPtMag<4)
+                doAddPoint=false;
+        }
+        if (doAddPoint) {
+            this._Points.push(pt);
+            this._dirty=true;
+        }
+    }
     this.insertPoint = function(pt, index){ this._Points.splice(index, 0, pt); this._dirty=true;}
     this.isDirty = function(){return this._dirty;}
     this.makeDirty = function(){this._dirty=true;}
@@ -167,7 +183,9 @@ function GLBrushStroke() {
         var bboxWidth = bboxMax[0] - bboxMin[0];
         var bboxHeight = bboxMax[1] - bboxMin[1];
         ctx.clearRect(0, 0, bboxWidth, bboxHeight);
-/*
+
+
+        /*
         ctx.lineWidth = this._strokeWidth;
         ctx.strokeStyle = "black";
         if (this._strokeColor)
@@ -185,7 +203,35 @@ function GLBrushStroke() {
             ctx.lineTo(pt[0]-bboxMin[0], pt[1]-bboxMin[1]);
         }
         ctx.stroke();
- */
+        */
+
+        var firstPt = this._Points[0];
+        var prevX = firstPt[0]-bboxMin[0];
+        var prevY = firstPt[1]-bboxMin[1];
+        for (var i = 1; i < numPoints; i++) {
+            var pt = this._Points[i];
+            ctx.globalCompositeOperation = 'source-over';
+            var x = pt[0]-bboxMin[0];
+            var y = pt[1]-bboxMin[1];
+            var r = ctx.createLinearGradient(prevX, prevY, x, y);
+            r.addColorStop(1, 'rgba(0,0,0,0.01)');
+            r.addColorStop(0.5,'rgba(255,0,0,1.0)');
+            r.addColorStop(0, 'rgba(0,0,0,0.01)');
+
+            ctx.fillStyle = r;
+            //ctx.fillStyle = "rgba(0,128,0,0.15)";
+            var w2 = this._strokeWidth*0.5;
+            ctx.moveTo(prevX-w2, prevY);
+            ctx.lineTo(prevX+w2, prevY);
+            ctx.lineTo(x+w2, y);
+            ctx.lineTo(x-w2, y);
+            ctx.fill();
+
+            prevX = x;
+            prevY = y;
+        }
+
+        /*
         var R2 = this._strokeWidth;
         var R = R2*0.5;
         var hardness = 0.25; //for a pencil, this is always 1 //TODO get hardness parameter from user interface
@@ -209,6 +255,8 @@ function GLBrushStroke() {
             //ctx.globalCompositeOperation = 'source-in';
             //ctx.rect(x-R, y-R, R2, R2);
         }
+        */
+
         ctx.restore();
     } //render()
 
diff --git a/js/tools/BrushTool.js b/js/tools/BrushTool.js
index ce8ffbb9..97df84a0 100644
--- a/js/tools/BrushTool.js
+++ b/js/tools/BrushTool.js
@@ -65,12 +65,30 @@ exports.BrushTool = Montage.create(ShapeTool, {
                 if (this._selectedBrushStroke === null){
                     this._selectedBrushStroke = new GLBrushStroke();
                 }
-                console.log("BrushTool Start");
                 NJevent("enableStageMove");//stageManagerModule.stageManager.enableMouseMove();
             } //value: function (event) {
         }, //HandleLeftButtonDown
 
+        _getUnsnappedPosition: {
+            value: function(x,y){
+                var elemSnap = snapManager.elementSnapEnabled();
+                var gridSnap = snapManager.gridSnapEnabled();
+                var alignSnap = snapManager.snapAlignEnabled();
 
+                snapManager.enableElementSnap(false);
+                snapManager.enableGridSnap(false);
+                snapManager.enableSnapAlign(false);
+
+                var point = webkitConvertPointFromPageToNode(this.application.ninja.stage.canvas, new WebKitPoint(x,y));
+                var unsnappedpos = DrawingToolBase.getHitRecPos(snapManager.snap(point.x, point.y, false));
+
+                snapManager.enableElementSnap(elemSnap);
+                snapManager.enableGridSnap(gridSnap);
+                snapManager.enableSnapAlign(alignSnap);
+
+                return unsnappedpos;
+            }
+        },
         //need to override this function because the ShapeTool's definition contains a clearDrawingCanvas call  - Pushkar
         //  might not need to override once we draw using OpenGL instead of SVG
         // Also took out all the snapping code for now...need to add that back
@@ -84,20 +102,10 @@ exports.BrushTool = Montage.create(ShapeTool, {
                 }
 
                 if (this._isDrawing) {
-                    snapManager.enableElementSnap(false);
-                    snapManager.enableGridSnap(false);
-                    snapManager.enableSnapAlign(false);
-                    //this.doDraw(event);
-                    //var currMousePos = this.getMouseUpPos();
-                    //instead of doDraw call own DrawingTool
-                    var point = webkitConvertPointFromPageToNode(this.application.ninja.stage.canvas, new WebKitPoint(event.pageX, event.pageY));
-                    var hitRecSnapPoint = DrawingToolBase.getUpdatedSnapPointNoAppLevelEnabling(point.x, point.y, true, this.mouseDownHitRec);
-                    var currMousePos = DrawingToolBase.getHitRecPos(hitRecSnapPoint);
-
+                    var currMousePos = this._getUnsnappedPosition(event.pageX, event.pageY);
                     if (this._selectedBrushStroke){
                        this._selectedBrushStroke.addPoint(currMousePos);
                     }
-
                     this.ShowCurrentBrushStrokeOnStage();
                 } //if (this._isDrawing) {
 
@@ -123,7 +131,6 @@ exports.BrushTool = Montage.create(ShapeTool, {
 
                 this._isDrawing = false;
                 this._hasDraw = false;
-                console.log("BrushTool Stop");
 
                 //TODO get these values from the options
                 if (this._selectedBrushStroke){
@@ -192,92 +199,89 @@ exports.BrushTool = Montage.create(ShapeTool, {
 
 
         RenderShape: {
-        value: function (w, h, planeMat, midPt, canvas) {
-            if ((Math.floor(w) === 0) || (Math.floor(h) === 0)) {
-                return;
-            }
+            value: function (w, h, planeMat, midPt, canvas) {
+                if ((Math.floor(w) === 0) || (Math.floor(h) === 0)) {
+                    return;
+                }
 
-            var left = Math.round(midPt[0] - 0.5 * w);
-            var top = Math.round(midPt[1] - 0.5 * h);
+                var left = Math.round(midPt[0] - 0.5 * w);
+                var top = Math.round(midPt[1] - 0.5 * h);
 
-            if (!canvas) {
-                var newCanvas = NJUtils.makeNJElement("canvas", "Brushstroke", "shape", null, true);
-                var elementModel = TagTool.makeElement(w, h, planeMat, midPt, newCanvas);
-                ElementMediator.addElement(newCanvas, elementModel.data, true);
+                if (!canvas) {
+                    var newCanvas = NJUtils.makeNJElement("canvas", "Brushstroke", "shape", null, true);
+                    var elementModel = TagTool.makeElement(w, h, planeMat, midPt, newCanvas);
+                    ElementMediator.addElement(newCanvas, elementModel.data, true);
 
-                // create all the GL stuff
-                var world = this.getGLWorld(newCanvas, this._useWebGL);
-                //store a reference to this newly created canvas
-                this._brushStrokeCanvas = newCanvas;
+                    // create all the GL stuff
+                    var world = this.getGLWorld(newCanvas, this._useWebGL);
+                    //store a reference to this newly created canvas
+                    this._brushStrokeCanvas = newCanvas;
 
-                var brushStroke = this._selectedBrushStroke;
-                if (brushStroke){
-                    brushStroke.setWorld(world);
+                    var brushStroke = this._selectedBrushStroke;
+                    if (brushStroke){
+                        brushStroke.setWorld(world);
 
-                    brushStroke.setPlaneMatrix(planeMat);
-                    var planeMatInv = glmat4.inverse( planeMat, [] );
-                    brushStroke.setPlaneMatrixInverse(planeMatInv);
-                    brushStroke.setPlaneCenter(midPt);
+                        brushStroke.setPlaneMatrix(planeMat);
+                        var planeMatInv = glmat4.inverse( planeMat, [] );
+                        brushStroke.setPlaneMatrixInverse(planeMatInv);
+                        brushStroke.setPlaneCenter(midPt);
 
-                    world.addObject(brushStroke);
-                    world.render();
-                    //TODO this will not work if there are multiple shapes in the same canvas
-                    newCanvas.elementModel.shapeModel.GLGeomObj = brushStroke;
-                }
-            } //if (!canvas) {
-            else {
-
+                        world.addObject(brushStroke);
+                        world.render();
+                        //TODO this will not work if there are multiple shapes in the same canvas
+                        newCanvas.elementModel.shapeModel.GLGeomObj = brushStroke;
+                    }
+                } //if (!canvas) {
+                else {