Merge pull request #177 from mqg734/WebGLMaterials

Fixed some rectangle radius bugs in canvas 2d mode.  Also changed canvas 2d gradients to match what the browser renders for a div's background.

1 files changed, 14 insertions, 6 deletions

diff --git a/js/lib/geom/rectangle.js b/js/lib/geom/rectangle.js
index 91b1d426..fcd1c1bd 100755
--- a/js/lib/geom/rectangle.js
+++ b/js/lib/geom/rectangle.js
@@ -356,7 +356,9 @@ var Rectangle = function GLRectangle() {
                 // various declarations
                 var pt,  rad,  ctr,  startPt, bPts;
                 var width  = Math.round(this.getWidth()),
-                        height = Math.round(this.getHeight());
+                        height = Math.round(this.getHeight()),
+            hw = 0.5*width,
+            hh = 0.5*height;
 
                 pt = [inset, inset];    // top left corner
 
@@ -364,6 +366,12 @@ var Rectangle = function GLRectangle() {
                 var trRad = this._trRadius;
                 var blRad = this._blRadius;
                 var brRad = this._brRadius;
+        // limit the radii to half the rectangle dimension
+        var minDimen = hw < hh ? hw : hh;
+        if (tlRad > minDimen)  tlRad = minDimen;
+        if (blRad > minDimen)  blRad = minDimen;
+        if (brRad > minDimen)  brRad = minDimen;
+        if (trRad > minDimen)  trRad = minDimen;
 
                 if ((tlRad <= 0) && (blRad <= 0) && (brRad <= 0) && (trRad <= 0)) {
                         ctx.rect(pt[0], pt[1], width - 2*inset, height - 2*inset);
@@ -452,13 +460,13 @@ var Rectangle = function GLRectangle() {
                 // render the fill
                 ctx.beginPath();
                 if (this._fillColor) {
-            inset = Math.ceil( lw ) + 0.5;
+            inset = Math.ceil( lw ) - 0.5;
 
             if(this._fillColor.gradientMode) {
                 if(this._fillColor.gradientMode === "radial") {
-                    gradient = ctx.createRadialGradient(w/2, h/2, 0, w/2, h/2, Math.max(w/2, h/2)-inset);
+                    gradient = ctx.createRadialGradient(w/2, h/2, 0, w/2, h/2, Math.max(w, h)/2);
                 } else {
-                    gradient = ctx.createLinearGradient(inset, h/2, w-2*inset, h/2);
+                    gradient = ctx.createLinearGradient(inset/2, h/2, w-inset, h/2);
                 }
                 colors = this._fillColor.color;
 
@@ -486,11 +494,11 @@ var Rectangle = function GLRectangle() {
                 // render the stroke
                 ctx.beginPath();
                 if (this._strokeColor) {
-            inset = Math.ceil( 0.5*lw ) + 0.5;
+            inset = Math.ceil( 0.5*lw ) - 0.5;
 
             if(this._strokeColor.gradientMode) {
                 if(this._strokeColor.gradientMode === "radial") {
-                    gradient = ctx.createRadialGradient(w/2, h/2, Math.min(h/2, w/2)-inset, w/2, h/2, Math.max(h/2, w/2));
+                    gradient = ctx.createRadialGradient(w/2, h/2, Math.min(h, w)/2-inset, w/2, h/2, Math.max(h, w)/2);
                 } else {
                     gradient = ctx.createLinearGradient(0, h/2, w, h/2);
                 }