26 lines
974 B
C++
26 lines
974 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=935c8f8b9782d297a73d7186f6ef7945
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REG_FIDDLE(Canvas_drawTextRSXform, 256, 256, false, 0) {
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void draw(SkCanvas* canvas) {
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const int iterations = 26;
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SkRSXform transforms[iterations];
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char alphabet[iterations];
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SkScalar angle = 0;
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SkScalar scale = 1;
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for (size_t i = 0; i < SK_ARRAY_COUNT(transforms); ++i) {
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const SkScalar s = SkScalarSin(angle) * scale;
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const SkScalar c = SkScalarCos(angle) * scale;
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transforms[i] = SkRSXform::Make(-c, -s, -s * 16, c * 16);
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angle += .45f;
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scale += .2f;
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alphabet[i] = 'A' + i;
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}
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SkPaint paint;
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SkFont font(nullptr, 20);
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auto spiral = SkTextBlob::MakeFromRSXform(alphabet, sizeof(alphabet), transforms, font);
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canvas->drawTextBlob(spiral, 110, 138, paint);
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}
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} // END FIDDLE
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