c682590538
git-svn-id: http://skia.googlecode.com/svn/trunk@3141 2bbb7eff-a529-9590-31e7-b0007b416f81
45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
#include "DataTypes.h"
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#include "Extrema.h"
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void _Rect::setBounds(const Cubic& cubic) {
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set(cubic[0]);
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add(cubic[3]);
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double tValues[4];
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int roots = SkFindCubicExtrema(cubic[0].x, cubic[1].x, cubic[2].x,
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cubic[3].x, tValues);
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roots += SkFindCubicExtrema(cubic[0].y, cubic[1].y, cubic[2].y, cubic[3].y,
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&tValues[roots]);
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for (int x = 0; x < roots; ++x) {
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_Point result;
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xy_at_t(cubic, tValues[x], result.x, result.y);
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add(result);
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}
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}
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void _Rect::setRawBounds(const Cubic& cubic) {
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set(cubic[0]);
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for (int x = 1; x < 4; ++x) {
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add(cubic[x]);
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}
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}
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void _Rect::setBounds(const Quadratic& quad) {
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set(quad[0]);
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add(quad[2]);
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double tValues[2];
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int roots = SkFindQuadExtrema(quad[0].x, quad[1].x, quad[2].x, tValues);
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roots += SkFindQuadExtrema(quad[0].y, quad[1].y, quad[2].y, &tValues[roots]);
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for (int x = 0; x < roots; ++x) {
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_Point result;
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xy_at_t(quad, tValues[x], result.x, result.y);
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add(result);
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}
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}
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void _Rect::setRawBounds(const Quadratic& quad) {
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set(quad[0]);
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for (int x = 1; x < 3; ++x) {
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add(quad[x]);
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}
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}
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