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OpenHarmony-TPC/chromium_third_party_skia
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Path_arcTo_2_a.cpp 1.83 KB
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李想 提交于 2023-11-11 15:55 +08:00 . chromium 99.0.4844.88 4.0release init
#if 0 // Disabled until updated to use current API.
// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
// HASH=386000684073fccabc224d7d6dc81cd9
REG_FIDDLE(Path_arcTo_2_a, 256, 226, false, 0) {
void draw(SkCanvas* canvas) {
SkPaint tangentPaint;
tangentPaint.setAntiAlias(true);
SkPaint textPaint(tangentPaint);
tangentPaint.setStyle(SkPaint::kStroke_Style);
tangentPaint.setColor(SK_ColorGRAY);
SkPaint arcPaint(tangentPaint);
arcPaint.setStrokeWidth(5);
arcPaint.setColor(SK_ColorBLUE);
SkPath path;
SkPoint pts[] = { {56, 20}, {200, 20}, {90, 190} };
SkScalar radius = 50;
path.moveTo(pts[0]);
path.arcTo(pts[1], pts[2], radius);
canvas->drawLine(pts[0], pts[1], tangentPaint);
canvas->drawLine(pts[1], pts[2], tangentPaint);
SkPoint lastPt;
(void) path.getLastPt(&lastPt);
SkVector radial = pts[2] - pts[1];
radial.setLength(radius);
SkPoint center = { lastPt.fX - radial.fY, lastPt.fY + radial.fX };
canvas->drawCircle(center, radius, tangentPaint);
canvas->drawLine(lastPt, center, tangentPaint);
radial = pts[1] - pts[0];
radial.setLength(radius);
SkPoint arcStart = { center.fX + radial.fY, center.fY - radial.fX };
canvas->drawLine(center, arcStart, tangentPaint);
canvas->drawPath(path, arcPaint);
canvas->drawString("(x0, y0)", pts[0].fX - 5, pts[0].fY, textPaint);
canvas->drawString("(x1, y1)", pts[1].fX + 5, pts[1].fY, textPaint);
canvas->drawString("(x2, y2)", pts[2].fX, pts[2].fY + 15, textPaint);
canvas->drawString("radius", center.fX + 15, center.fY + 25, textPaint);
canvas->drawString("radius", center.fX - 3, center.fY - 16, textPaint);
}
} // END FIDDLE
#endif // Disabled until updated to use current API.
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openharmony-tpc
chromium_third_party_skia
chromium_third_party_skia
4.0_Release

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