2019-03-15 18:22:51 +00:00
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#if 0 // Disabled until updated to use current API.
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// 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 "fiddle/examples.h"
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// HASH=8b8a4cd8a29d22bb9c5e63b70357bd65
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2019-03-18 20:06:34 +00:00
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REG_FIDDLE(Point_CrossProduct, 256, 256, false, 0) {
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2019-03-15 18:22:51 +00:00
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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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SkVector vectors[][2] = {{{50, 2}, {-14, 20}}, {{0, 50}, {-50, 0}}, {{-20, 25}, {25, -20}},
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{{-20, -24}, {-24, -20}}};
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SkPoint center[] = {{32, 32}, {160, 32}, {32, 160}, {160, 160}};
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paint.setStrokeWidth(2);
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for (size_t i = 0; i < 4; ++i) {
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paint.setColor(SK_ColorRED);
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canvas->drawLine(center[i], center[i] + vectors[i][0], paint);
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paint.setColor(SK_ColorBLUE);
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canvas->drawLine(center[i], center[i] + vectors[i][1], paint);
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SkString str;
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SkScalar cross = SkPoint::CrossProduct(vectors[i][1], vectors[i][0]);
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str.printf("cross = %g", cross);
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paint.setColor(cross >= 0 ? SK_ColorRED : SK_ColorBLUE);
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canvas->drawString(str, center[i].fX, center[i].fY, paint);
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}
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}
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} // END FIDDLE
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#endif // Disabled until updated to use current API.
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