blob: 9af338cec4191c927bf07c846c5dae0355c2a871 [file] [log] [blame]
/*
* Copyright 2021 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/SkPath.h"
constexpr int kSize = 1000;
// Makes sure GrPathInnerTriangulateOp uses correct stencil settings when there is a clip in the
// stencil buffer.
static void draw_clipped_flower(SkCanvas* canvas, SkPathFillType fillType) {
canvas->clear(SK_ColorCYAN);
SkPath clip;
clip.setFillType(SkPathFillType::kWinding);
constexpr static int kGridCount = 50;
constexpr static float kCellSize = (float)kSize / kGridCount;
for (int y = 0; y < kGridCount; ++y) {
clip.addRect(0, y * kCellSize, kSize, (y + 1) * kCellSize, SkPathDirection(y & 1));
}
for (int x = 0; x < kGridCount; ++x) {
clip.addRect(x * kCellSize, 0, (x + 1) * kCellSize, kSize, SkPathDirection(x & 1));
}
canvas->clipPath(clip);
SkPath flower;
flower.setFillType(fillType);
flower.moveTo(1, 0);
constexpr static int kNumPetals = 9;
for (int i = 1; i <= kNumPetals; ++i) {
float c = 2*SK_ScalarPI*(i - .5f) / kNumPetals;
float theta = 2*SK_ScalarPI*i / kNumPetals;
flower.quadTo(cosf(c)*2, sinf(c)*2, cosf(theta), sinf(theta));
}
flower.close();
flower.addArc(SkRect::MakeLTRB(-.75f, -.75f, .75f, .75f), 0, 360);
canvas->translate(kSize/2.f, kSize/2.f);
canvas->scale(kSize/3.f, kSize/3.f);
SkPaint p;
p.setAntiAlias(true);
p.setColor(SK_ColorMAGENTA);
canvas->drawPath(flower, p);
}
DEF_SIMPLE_GM(largeclippedpath_winding, canvas, kSize, kSize) {
draw_clipped_flower(canvas, SkPathFillType::kWinding);
}
DEF_SIMPLE_GM(largeclippedpath_evenodd, canvas, kSize, kSize) {
draw_clipped_flower(canvas, SkPathFillType::kEvenOdd);
}