6680fb1dc0
git-svn-id: http://skia.googlecode.com/svn/trunk@3151 2bbb7eff-a529-9590-31e7-b0007b416f81
35 lines
1.7 KiB
C++
35 lines
1.7 KiB
C++
#include "DataTypes.h"
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class Intersections;
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// unit-testable utilities
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bool bezier_clip(const Cubic& cubic1, const Cubic& cubic2, double& minT, double& maxT);
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bool bezier_clip(const Quadratic& q1, const Quadratic& q2, double& minT, double& maxT);
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void chop_at(const Cubic& src, CubicPair& dst, double t);
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void chop_at(const Quadratic& src, QuadraticPair& dst, double t);
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int convex_hull(const Cubic& cubic, char order[4]);
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bool convex_x_hull(const Cubic& cubic, char connectTo0[2], char connectTo3[2]);
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bool implicit_matches(const Cubic& cubic1, const Cubic& cubic2);
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bool implicit_matches(const _Line& line1, const _Line& line2);
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bool implicit_matches(const Quadratic& quad1, const Quadratic& quad2);
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void sub_divide(const Cubic& src, double t1, double t2, Cubic& dst);
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void sub_divide(const _Line& src, double t1, double t2, _Line& dst);
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void sub_divide(const Quadratic& src, double t1, double t2, Quadratic& dst);
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void tangent(const Cubic& cubic, double t, _Point& result);
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void tangent(const _Line& line, _Point& result);
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void tangent(const Quadratic& quad, double t, _Point& result);
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// main functions
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enum ReduceOrder_Flags {
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kReduceOrder_NoQuadraticsAllowed,
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kReduceOrder_QuadraticsAllowed
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};
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int reduceOrder(const Cubic& cubic, Cubic& reduction, ReduceOrder_Flags );
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int reduceOrder(const _Line& line, _Line& reduction);
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int reduceOrder(const Quadratic& quad, Quadratic& reduction);
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int horizontalIntersect(const Cubic& cubic, double y, double tRange[3]);
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bool intersect(const Cubic& cubic1, const Cubic& cubic2, Intersections& );
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int intersect(const Cubic& cubic, const _Line& line, double cRange[3], double lRange[3]);
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bool intersect(const Quadratic& q1, const Quadratic& q2, Intersections& );
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bool intersect(const Quadratic& quad, const _Line& line, Intersections& );
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