blob: 35205474a4823241d2207b6452765da4900ba522 [file] [log] [blame]
/*
* 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/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPathBuilder.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkGradientShader.h"
namespace skiagm {
class FillTypePerspGM : public GM {
SkPath fPath;
public:
FillTypePerspGM() {}
void makePath() {
if (fPath.isEmpty()) {
const SkScalar radius = SkIntToScalar(45);
fPath = SkPathBuilder().addCircle(SkIntToScalar(50), SkIntToScalar(50), radius)
.addCircle(SkIntToScalar(100), SkIntToScalar(100), radius)
.detach();
}
}
protected:
SkString getName() const override { return SkString("filltypespersp"); }
SkISize getISize() override { return SkISize::Make(835, 840); }
void showPath(SkCanvas* canvas, int x, int y, SkPathFillType ft,
SkScalar scale, const SkPaint& paint) {
const SkRect r = { 0, 0, SkIntToScalar(150), SkIntToScalar(150) };
canvas->save();
canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
canvas->clipRect(r);
canvas->drawColor(SK_ColorWHITE);
fPath.setFillType(ft);
canvas->translate(r.centerX(), r.centerY());
canvas->scale(scale, scale);
canvas->translate(-r.centerX(), -r.centerY());
canvas->drawPath(fPath, paint);
canvas->restore();
}
void showFour(SkCanvas* canvas, SkScalar scale, bool aa) {
SkPaint paint;
SkPoint center = SkPoint::Make(SkIntToScalar(100), SkIntToScalar(100));
SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN};
SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1};
paint.setShader(SkGradientShader::MakeRadial(center,
SkIntToScalar(100),
colors,
pos,
std::size(colors),
SkTileMode::kClamp));
paint.setAntiAlias(aa);
showPath(canvas, 0, 0, SkPathFillType::kWinding,
scale, paint);
showPath(canvas, 200, 0, SkPathFillType::kEvenOdd,
scale, paint);
showPath(canvas, 00, 200, SkPathFillType::kInverseWinding,
scale, paint);
showPath(canvas, 200, 200, SkPathFillType::kInverseEvenOdd,
scale, paint);
}
void onDraw(SkCanvas* canvas) override {
this->makePath();
// do perspective drawPaint as the background;
SkPaint bkgnrd;
SkPoint center = SkPoint::Make(SkIntToScalar(100),
SkIntToScalar(100));
SkColor colors[] = {SK_ColorBLACK, SK_ColorCYAN,
SK_ColorYELLOW, SK_ColorWHITE};
SkScalar pos[] = {0, SK_ScalarHalf / 2,
3 * SK_ScalarHalf / 2, SK_Scalar1};
bkgnrd.setShader(SkGradientShader::MakeRadial(center,
SkIntToScalar(1000),
colors,
pos,
std::size(colors),
SkTileMode::kClamp));
canvas->save();
canvas->translate(SkIntToScalar(100), SkIntToScalar(100));
SkMatrix mat;
mat.reset();
mat.setPerspY(SK_Scalar1 / 1000);
canvas->concat(mat);
canvas->drawPaint(bkgnrd);
canvas->restore();
// draw the paths in perspective
SkMatrix persp;
persp.reset();
persp.setPerspX(-SK_Scalar1 / 1800);
persp.setPerspY(SK_Scalar1 / 500);
canvas->concat(persp);
canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
const SkScalar scale = SkIntToScalar(5)/4;
showFour(canvas, SK_Scalar1, false);
canvas->translate(SkIntToScalar(450), 0);
showFour(canvas, scale, false);
canvas->translate(SkIntToScalar(-450), SkIntToScalar(450));
showFour(canvas, SK_Scalar1, true);
canvas->translate(SkIntToScalar(450), 0);
showFour(canvas, scale, true);
}
private:
using INHERITED = GM;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new FillTypePerspGM; )
} // namespace skiagm