skia2/gm/filltypespersp.cpp
Ben Wagner 7fde8e1728 IWYU for gms.
This almost gets gms to be iwyu clean. The last bit is around gm.cpp
and the tracing framework and its use of atomic. Will also need a way
of keeping things from regressing, which is difficult due to needing to
do this outside-in.

Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2019-05-02 17:48:53 +00:00

143 lines
4.9 KiB
C++

/*
* 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/SkPath.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.addCircle(SkIntToScalar(50), SkIntToScalar(50), radius);
fPath.addCircle(SkIntToScalar(100), SkIntToScalar(100), radius);
}
}
protected:
SkString onShortName() override {
return SkString("filltypespersp");
}
SkISize onISize() override {
return SkISize::Make(835, 840);
}
void showPath(SkCanvas* canvas, int x, int y, SkPath::FillType 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,
SK_ARRAY_COUNT(colors),
SkTileMode::kClamp));
paint.setAntiAlias(aa);
showPath(canvas, 0, 0, SkPath::kWinding_FillType,
scale, paint);
showPath(canvas, 200, 0, SkPath::kEvenOdd_FillType,
scale, paint);
showPath(canvas, 00, 200, SkPath::kInverseWinding_FillType,
scale, paint);
showPath(canvas, 200, 200, SkPath::kInverseEvenOdd_FillType,
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,
SK_ARRAY_COUNT(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:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new FillTypePerspGM; )
}