fix handling of stroked cubics when we exhaust our recursion limit.

trunk/gm/cubicpaths.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkPaint.h"
 #include "SkRandom.h"
@@ skipping 278 matching lines @@
             canvas->restore();
         }
         canvas->restore();
         canvas->restore();
     }
 
 private:
     typedef skiagm::GM INHERITED;
 };
 
+#include "SkGeometry.h"
+
+class TrickyStrokeCubicGM : public skiagm::GM {
+public:
+    TrickyStrokeCubicGM() {}
+    
+protected:
+    SkString onShortName() {
+        return SkString("strokecubic");
+    }
+    
+    SkISize onISize() { return SkISize::Make(640, 480); }
+    
+    virtual void onDraw(SkCanvas* canvas) {
+        const SkPoint pts[] = {{10,20}, {0,40}, {10,0}, {50,10}};
+        SkPath path;
+        
+        path.moveTo(pts[0]);
+        path.cubicTo(pts[1], pts[2], pts[3]);
+
+        SkRect srcR;
+        // hone in on the interesting part of the cubic
+        srcR.set(6, 23, 9, 27);
+
+        SkMatrix matrix;
+        matrix.setRectToRect(srcR, SkRect::MakeLTRB(10, 10, 630, 470),
+                             SkMatrix::kCenter_ScaleToFit);
+        canvas->concat(matrix);
+        
+        SkPaint paint;
+        paint.setStyle(SkPaint::kStroke_Style);
+        paint.setStrokeWidth(0.15f);
+        SkPath stroke;
+        paint.getFillPath(path, &stroke);
+
+        paint.setAntiAlias(true);
+        paint.setColor(SK_ColorLTGRAY);
+        canvas->drawPath(path, paint);
+
+        paint.setStrokeWidth(0);
+        paint.setColor(SK_ColorBLUE);
+        canvas->drawPath(path, paint);
+
+        paint.setColor(SK_ColorRED);
+        canvas->drawPath(stroke, paint);
+    }
+    
+private:
+    typedef skiagm::GM INHERITED;
+};
+
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new CubicPathGM; )
 DEF_GM( return new CubicClosePathGM; )
+DEF_GM( return new TrickyStrokeCubicGM; )