fa0588ff67
in the middle of switching to sortless version git-svn-id: http://skia.googlecode.com/svn/trunk@3768 2bbb7eff-a529-9590-31e7-b0007b416f81
61 lines
3.1 KiB
C++
61 lines
3.1 KiB
C++
#ifndef CurveIntersection_DEFINE
|
|
#define CurveIntersection_DEFINE
|
|
|
|
#include "DataTypes.h"
|
|
|
|
class Intersections;
|
|
|
|
// unit-testable utilities
|
|
double axialIntersect(const Quadratic& q1, const _Point& p, bool vert);
|
|
bool bezier_clip(const Cubic& cubic1, const Cubic& cubic2, double& minT, double& maxT);
|
|
bool bezier_clip(const Quadratic& q1, const Quadratic& q2, double& minT, double& maxT);
|
|
void chop_at(const Cubic& src, CubicPair& dst, double t);
|
|
void chop_at(const Quadratic& src, QuadraticPair& dst, double t);
|
|
int convex_hull(const Cubic& cubic, char order[4]);
|
|
bool convex_x_hull(const Cubic& cubic, char connectTo0[2], char connectTo3[2]);
|
|
bool implicit_matches(const Cubic& cubic1, const Cubic& cubic2);
|
|
bool implicit_matches(const _Line& line1, const _Line& line2);
|
|
bool implicit_matches_ulps(const _Line& one, const _Line& two, int ulps);
|
|
bool implicit_matches(const Quadratic& quad1, const Quadratic& quad2);
|
|
void sub_divide(const Cubic& src, double t1, double t2, Cubic& dst);
|
|
void sub_divide(const _Line& src, double t1, double t2, _Line& dst);
|
|
void sub_divide(const Quadratic& src, double t1, double t2, Quadratic& dst);
|
|
void tangent(const Cubic& cubic, double t, _Point& result);
|
|
void tangent(const _Line& line, _Point& result);
|
|
void tangent(const Quadratic& quad, double t, _Point& result);
|
|
|
|
// main functions
|
|
enum ReduceOrder_Flags {
|
|
kReduceOrder_NoQuadraticsAllowed,
|
|
kReduceOrder_QuadraticsAllowed
|
|
};
|
|
int reduceOrder(const Cubic& cubic, Cubic& reduction, ReduceOrder_Flags );
|
|
int reduceOrder(const _Line& line, _Line& reduction);
|
|
int reduceOrder(const Quadratic& quad, Quadratic& reduction);
|
|
int horizontalIntersect(const Cubic& cubic, double y, double tRange[3]);
|
|
int horizontalIntersect(const Cubic& cubic, double left, double right, double y,
|
|
double tRange[3]);
|
|
int horizontalIntersect(const Cubic& cubic, double left, double right, double y,
|
|
bool flipped, Intersections&);
|
|
int horizontalIntersect(const _Line& line, double left, double right,
|
|
double y, bool flipped, Intersections& );
|
|
int horizontalIntersect(const Quadratic& quad, double left, double right,
|
|
double y, double tRange[2]);
|
|
int horizontalIntersect(const Quadratic& quad, double left, double right,
|
|
double y, bool flipped, Intersections& );
|
|
bool intersect(const Cubic& cubic1, const Cubic& cubic2, Intersections& );
|
|
int intersect(const Cubic& cubic, const _Line& line, double cRange[3], double lRange[3]);
|
|
bool intersect(const Quadratic& q1, const Quadratic& q2, Intersections& );
|
|
bool intersect(const Quadratic& quad, const _Line& line, Intersections& );
|
|
double leftMostT(const Cubic& , double startT, double endT);
|
|
double leftMostT(const _Line& , double startT, double endT);
|
|
double leftMostT(const Quadratic& , double startT, double endT);
|
|
int verticalIntersect(const Cubic& cubic, double top, double bottom, double x,
|
|
bool flipped, Intersections& );
|
|
int verticalIntersect(const _Line& line, double top, double bottom, double x,
|
|
bool flipped, Intersections& );
|
|
int verticalIntersect(const Quadratic& quad, double top, double bottom,
|
|
double x, bool flipped, Intersections& );
|
|
|
|
#endif
|