cecd3ac9d0
git-svn-id: http://skia.googlecode.com/svn/trunk@2257 2bbb7eff-a529-9590-31e7-b0007b416f81
129 lines
4.5 KiB
C++
129 lines
4.5 KiB
C++
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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkGradientShader.h"
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namespace skiagm {
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class FillTypePerspGM : public GM {
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SkPath fPath;
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public:
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FillTypePerspGM() {
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const SkScalar radius = SkIntToScalar(45);
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fPath.addCircle(SkIntToScalar(50), SkIntToScalar(50), radius);
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fPath.addCircle(SkIntToScalar(100), SkIntToScalar(100), radius);
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}
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protected:
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virtual SkString onShortName() {
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return SkString("filltypespersp");
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}
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virtual SkISize onISize() {
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return make_isize(835, 840);
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}
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void showPath(SkCanvas* canvas, int x, int y, SkPath::FillType ft,
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SkScalar scale, const SkPaint& paint) {
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const SkRect r = { 0, 0, SkIntToScalar(150), SkIntToScalar(150) };
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canvas->save();
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas->clipRect(r);
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canvas->drawColor(SK_ColorWHITE);
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fPath.setFillType(ft);
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canvas->translate(r.centerX(), r.centerY());
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canvas->scale(scale, scale);
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canvas->translate(-r.centerX(), -r.centerY());
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canvas->drawPath(fPath, paint);
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canvas->restore();
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}
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void showFour(SkCanvas* canvas, SkScalar scale, bool aa) {
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SkPaint paint;
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SkPoint center = SkPoint::Make(SkIntToScalar(100), SkIntToScalar(100));
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SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN};
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SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1};
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SkShader* s = SkGradientShader::CreateRadial(center,
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SkIntToScalar(100),
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colors,
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pos,
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SK_ARRAY_COUNT(colors),
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SkShader::kClamp_TileMode);
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paint.setShader(s)->unref();
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paint.setAntiAlias(aa);
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showPath(canvas, 0, 0, SkPath::kWinding_FillType,
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scale, paint);
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showPath(canvas, 200, 0, SkPath::kEvenOdd_FillType,
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scale, paint);
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showPath(canvas, 00, 200, SkPath::kInverseWinding_FillType,
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scale, paint);
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showPath(canvas, 200, 200, SkPath::kInverseEvenOdd_FillType,
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scale, paint);
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}
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virtual void onDraw(SkCanvas* canvas) {
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// do perspective drawPaint as the background;
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SkPaint bkgnrd;
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SkPoint center = SkPoint::Make(SkIntToScalar(100),
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SkIntToScalar(100));
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SkColor colors[] = {SK_ColorBLACK, SK_ColorCYAN,
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SK_ColorYELLOW, SK_ColorWHITE};
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SkScalar pos[] = {0, SK_ScalarHalf / 2,
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3 * SK_ScalarHalf / 2, SK_Scalar1};
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SkShader* s = SkGradientShader::CreateRadial(center,
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SkIntToScalar(1000),
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colors,
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pos,
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SK_ARRAY_COUNT(colors),
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SkShader::kClamp_TileMode);
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bkgnrd.setShader(s)->unref();
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canvas->save();
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canvas->translate(SkIntToScalar(100), SkIntToScalar(100));
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SkMatrix mat;
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mat.reset();
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mat.setPerspY(SK_Scalar1 / 1000);
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canvas->concat(mat);
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canvas->drawPaint(bkgnrd);
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canvas->restore();
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// draw the paths in perspective
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SkMatrix persp;
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persp.reset();
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persp.setPerspX(-SK_Scalar1 / 1800);
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persp.setPerspY(SK_Scalar1 / 500);
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canvas->concat(persp);
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canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
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const SkScalar scale = SkIntToScalar(5)/4;
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showFour(canvas, SK_Scalar1, false);
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canvas->translate(SkIntToScalar(450), 0);
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showFour(canvas, scale, false);
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canvas->translate(SkIntToScalar(-450), SkIntToScalar(450));
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showFour(canvas, SK_Scalar1, true);
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canvas->translate(SkIntToScalar(450), 0);
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showFour(canvas, scale, true);
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new FillTypePerspGM; }
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static GMRegistry reg(MyFactory);
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}
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