add test for poly2poly
git-svn-id: http://skia.googlecode.com/svn/trunk@805 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/poly2poly.cpp b/gm/poly2poly.cpp
new file mode 100644
index 0000000..193ede7
--- /dev/null
+++ b/gm/poly2poly.cpp
@@ -0,0 +1,108 @@
+#include "gm.h"
+
+namespace skiagm {
+
+class Poly2PolyGM : public GM {
+public:
+ Poly2PolyGM() {}
+
+protected:
+ virtual SkString onShortName() {
+ return SkString("poly2poly");
+ }
+
+ virtual SkISize onISize() {
+ return make_isize(835, 840);
+ }
+
+ void drawBG(SkCanvas* canvas) {
+ canvas->drawColor(SK_ColorWHITE);
+ }
+
+ static void doDraw(SkCanvas* canvas, SkPaint* paint, const int isrc[],
+ const int idst[], int count) {
+ SkMatrix matrix;
+ SkPoint src[4], dst[4];
+
+ for (int i = 0; i < count; i++) {
+ src[i].set(SkIntToScalar(isrc[2*i+0]), SkIntToScalar(isrc[2*i+1]));
+ dst[i].set(SkIntToScalar(idst[2*i+0]), SkIntToScalar(idst[2*i+1]));
+ }
+
+ canvas->save();
+ matrix.setPolyToPoly(src, dst, count);
+ canvas->concat(matrix);
+
+ paint->setColor(SK_ColorGRAY);
+ paint->setStyle(SkPaint::kStroke_Style);
+ const SkScalar D = SkIntToScalar(64);
+ canvas->drawRectCoords(0, 0, D, D, *paint);
+ canvas->drawLine(0, 0, D, D, *paint);
+ canvas->drawLine(0, D, D, 0, *paint);
+
+ SkPaint::FontMetrics fm;
+ paint->getFontMetrics(&fm);
+ paint->setColor(SK_ColorRED);
+ paint->setStyle(SkPaint::kFill_Style);
+ SkScalar x = D/2;
+ float y = D/2 - (fm.fAscent + fm.fDescent)/2;
+ SkString str;
+ str.appendS32(count);
+ canvas->drawText(str.c_str(), str.size(), x, y, *paint);
+
+ canvas->restore();
+ }
+
+ virtual void onDraw(SkCanvas* canvas) {
+ this->drawBG(canvas);
+
+ SkPaint paint;
+ paint.setAntiAlias(true);
+ paint.setStrokeWidth(SkIntToScalar(4));
+ paint.setTextSize(SkIntToScalar(40));
+ paint.setTextAlign(SkPaint::kCenter_Align);
+
+ canvas->save();
+ canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
+ // translate (1 point)
+ const int src1[] = { 0, 0 };
+ const int dst1[] = { 5, 5 };
+ doDraw(canvas, &paint, src1, dst1, 1);
+ canvas->restore();
+
+ canvas->save();
+ canvas->translate(SkIntToScalar(160), SkIntToScalar(10));
+ // rotate/uniform-scale (2 points)
+ const int src2[] = { 32, 32, 64, 32 };
+ const int dst2[] = { 32, 32, 64, 48 };
+ doDraw(canvas, &paint, src2, dst2, 2);
+ canvas->restore();
+
+ canvas->save();
+ canvas->translate(SkIntToScalar(10), SkIntToScalar(110));
+ // rotate/skew (3 points)
+ const int src3[] = { 0, 0, 64, 0, 0, 64 };
+ const int dst3[] = { 0, 0, 96, 0, 24, 64 };
+ doDraw(canvas, &paint, src3, dst3, 3);
+ canvas->restore();
+
+ canvas->save();
+ canvas->translate(SkIntToScalar(160), SkIntToScalar(110));
+ // perspective (4 points)
+ const int src4[] = { 0, 0, 64, 0, 64, 64, 0, 64 };
+ const int dst4[] = { 0, 0, 96, 0, 64, 96, 0, 64 };
+ doDraw(canvas, &paint, src4, dst4, 4);
+ canvas->restore();
+ }
+
+private:
+ typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static GM* MyFactory(void*) { return new Poly2PolyGM; }
+static GMRegistry reg(MyFactory);
+
+}
+