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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
// This test only works with the GPU backend.
#include "gm.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "GrTest.h"
#include "SkPatch.h"
namespace skiagm {
/**
* This GM draws a SkPatch.
*/
class SkPatchGM : public GM {
public:
SkPatchGM() {
this->setBGColor(0xFFFFFFFF);
}
protected:
virtual SkString onShortName() SK_OVERRIDE {
return SkString("patch_primitive");
}
virtual SkISize onISize() SK_OVERRIDE {
return SkISize::Make(800, 800);
}
virtual uint32_t onGetFlags() const SK_OVERRIDE {
return kGPUOnly_Flag;
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkPaint paint;
SkColor colors[4] = {
SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorCYAN
};
SkPoint points[] = {
{100,100},{130,50},{500,70}, {650,60},
{350,125},{490,555},{600,700},
{515,595},{140,550},{110,590},
{125,400},{70,150}
};
SkPatch coons(points, colors);
SkPatch::VertexData data;
coons.getVertexData(&data, 10);
canvas->drawVertices(SkCanvas::kTriangles_VertexMode,data.fVertexCount,
data.fPoints, data.fTexCoords, data.fColors, NULL, data.fIndices,
data.fIndexCount, paint);
//draw control points
SkPoint bottom[4];
coons.getBottomPoints(bottom);
SkPoint top[4];
coons.getTopPoints(top);
SkPoint left[4];
coons.getLeftPoints(left);
SkPoint right[4];
coons.getRightPoints(right);
SkPoint corners[4] = { bottom[0], bottom[3], top[0], top[3] };
canvas->drawPoints(SkCanvas::kLines_PointMode, 4, bottom, paint);
canvas->drawPoints(SkCanvas::kLines_PointMode, 2, bottom+1, paint);
canvas->drawPoints(SkCanvas::kLines_PointMode, 4, top, paint);
canvas->drawPoints(SkCanvas::kLines_PointMode, 4, left, paint);
canvas->drawPoints(SkCanvas::kLines_PointMode, 4, right, paint);
canvas->drawPoints(SkCanvas::kLines_PointMode, 2, top+1, paint);
canvas->drawPoints(SkCanvas::kLines_PointMode, 2, left+1, paint);
canvas->drawPoints(SkCanvas::kLines_PointMode, 2, right+1, paint);
paint.setStrokeWidth(10);
paint.setColor(SK_ColorRED);
canvas->drawPoints(SkCanvas::kPoints_PointMode, 4, corners, paint);
paint.setColor(SK_ColorBLUE);
canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, bottom+1, paint);
paint.setColor(SK_ColorCYAN);
canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, top+1, paint);
paint.setColor(SK_ColorYELLOW);
canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, left+1, paint);
paint.setColor(SK_ColorGREEN);
canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, right+1, paint);
}
private:
typedef GM INHERITED;
};
DEF_GM( return SkNEW(SkPatchGM); )
}
#endif