27 lines
1.1 KiB
C++
27 lines
1.1 KiB
C++
#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 "tools/fiddle/examples.h"
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// HASH=60a08f3ce75374fc815384616d114df7
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REG_FIDDLE(Point_Normalize, 256, 256, 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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const SkPoint lines[][2] = { {{ 30, 110 }, { 190, 30 }},
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{{ 30, 220 }, { 120, 140 }}};
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for (auto line : lines) {
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canvas->drawLine(line[0], line[1], paint);
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SkVector vector = line[1] - line[0];
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SkScalar priorLength = SkPoint::Normalize(&vector);
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SkVector rotate90 = { -vector.fY, vector.fX };
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rotate90 *= 10.f;
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canvas->drawLine(line[0] - rotate90, line[0] + rotate90, paint);
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canvas->drawLine(line[1] - rotate90, line[1] + rotate90, paint);
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SkString length("length = ");
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length.appendScalar(priorLength);
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canvas->drawString(length, line[0].fX + 25, line[0].fY - 4, 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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