ref: 6cd07cf340af12356ca4558cb8fad5ed3ebc41d1
dir: /sys/include/geometry.h/
#pragma lib "libgeometry.a" #pragma src "/sys/src/libgeometry" #define DEG 0.01745329251994330 /* π/180 */ typedef struct Point2 Point2; typedef struct Point3 Point3; typedef double Matrix[3][3]; typedef double Matrix3[4][4]; typedef struct Quaternion Quaternion; typedef struct RFrame RFrame; typedef struct RFrame3 RFrame3; typedef struct Triangle2 Triangle2; typedef struct Triangle3 Triangle3; struct Point2 { double x, y, w; }; struct Point3 { double x, y, z, w; }; struct Quaternion { double r, i, j, k; }; struct RFrame { Point2 p; Point2 bx, by; }; struct RFrame3 { Point3 p; Point3 bx, by, bz; }; struct Triangle2 { Point2 p0, p1, p2; }; struct Triangle3 { Point3 p0, p1, p2; }; /* utils */ double flerp(double, double, double); double fberp(double, double, double, Point3); double fclamp(double, double, double); /* Point2 */ Point2 Pt2(double, double, double); Point2 Vec2(double, double); Point2 addpt2(Point2, Point2); Point2 subpt2(Point2, Point2); Point2 mulpt2(Point2, double); Point2 divpt2(Point2, double); Point2 lerp2(Point2, Point2, double); Point2 berp2(Point2, Point2, Point2, Point3); double dotvec2(Point2, Point2); double vec2len(Point2); Point2 normvec2(Point2); int edgeptcmp(Point2, Point2, Point2); int ptinpoly(Point2, Point2*, ulong); /* Point3 */ Point3 Pt3(double, double, double, double); Point3 Vec3(double, double, double); Point3 addpt3(Point3, Point3); Point3 subpt3(Point3, Point3); Point3 mulpt3(Point3, double); Point3 divpt3(Point3, double); Point3 lerp3(Point3, Point3, double); Point3 berp3(Point3, Point3, Point3, Point3); double dotvec3(Point3, Point3); Point3 crossvec3(Point3, Point3); double vec3len(Point3); Point3 normvec3(Point3); /* Matrix */ void identity(Matrix); void addm(Matrix, Matrix); void subm(Matrix, Matrix); void mulm(Matrix, Matrix); void smulm(Matrix, double); void transposem(Matrix); double detm(Matrix); double tracem(Matrix); double minorm(Matrix, int, int); double cofactorm(Matrix, int, int); void adjm(Matrix); void invm(Matrix); Point2 xform(Point2, Matrix); /* Matrix3 */ void identity3(Matrix3); void addm3(Matrix3, Matrix3); void subm3(Matrix3, Matrix3); void mulm3(Matrix3, Matrix3); void smulm3(Matrix3, double); void transposem3(Matrix3); double detm3(Matrix3); double tracem3(Matrix3); double minorm3(Matrix3, int, int); double cofactorm3(Matrix3, int, int); void adjm3(Matrix3); void invm3(Matrix3); Point3 xform3(Point3, Matrix3); /* Quaternion */ Quaternion Quat(double, double, double, double); Quaternion Quatvec(double, Point3); Quaternion addq(Quaternion, Quaternion); Quaternion subq(Quaternion, Quaternion); Quaternion mulq(Quaternion, Quaternion); Quaternion smulq(Quaternion, double); Quaternion sdivq(Quaternion, double); double dotq(Quaternion, Quaternion); Quaternion invq(Quaternion); double qlen(Quaternion); Quaternion normq(Quaternion); Quaternion slerp(Quaternion, Quaternion, double); Point3 qrotate(Point3, Point3, double); /* RFrame */ Point2 rframexform(Point2, RFrame); Point3 rframexform3(Point3, RFrame3); Point2 invrframexform(Point2, RFrame); Point3 invrframexform3(Point3, RFrame3); /* Triangle2 */ Point2 centroid(Triangle2); Point3 barycoords(Triangle2, Point2); /* Triangle3 */ Point3 centroid3(Triangle3); /* Fmt */ #pragma varargck type "v" Point2 #pragma varargck type "V" Point3 int vfmt(Fmt*); int Vfmt(Fmt*); void GEOMfmtinstall(void);