22 lines
719 B
C++
22 lines
719 B
C++
// Copyright 2019 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "tools/fiddle/examples.h"
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// HASH=c69cd2a590b5733c3cbc92cb9ceed3f5
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REG_FIDDLE(Matrix_mapRectToQuad, 256, 192, false, 0) {
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void draw(SkCanvas* canvas) {
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SkPaint paint;
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paint.setAntiAlias(true);
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SkMatrix matrix;
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matrix.setRotate(60, 128, 128);
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SkRect rect = {50, 50, 150, 150};
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SkPoint pts[4];
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matrix.mapRectToQuad(pts, rect);
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for (int i = 0; i < 4; ++i) {
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canvas->drawCircle(pts[i].fX, pts[i].fY, 3, paint);
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}
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canvas->concat(matrix);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawRect(rect, paint);
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}
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} // END FIDDLE
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