X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2Fcgmath%2Fcgmath.h;fp=src%2Fcgmath%2Fcgmath.h;h=0000000000000000000000000000000000000000;hp=f8f776b7d834e1554a0b1dd5562f9d1616bb4708;hb=3c8a42c780f4fb7817badbc136f7312aa20dd5ef;hpb=b6c89d9ffbb08c5286448de4773290f0924a420b diff --git a/src/cgmath/cgmath.h b/src/cgmath/cgmath.h deleted file mode 100644 index f8f776b..0000000 --- a/src/cgmath/cgmath.h +++ /dev/null @@ -1,238 +0,0 @@ -/* gph-cmath - C graphics math library - * Copyright (C) 2018 John Tsiombikas - * - * This program is free software. Feel free to use, modify, and/or redistribute - * it under the terms of the MIT/X11 license. See LICENSE for details. - * If you intend to redistribute parts of the code without the LICENSE file - * replace this paragraph with the full contents of the LICENSE file. - * - * Function prefixes signify the data type of their operand(s): - * - cgm_v... functions are operations on cgm_vec3 vectors - * - cgm_w... functions are operations on cgm_vec4 vectors - * - cgm_q... functions are operations on cgm_quat quaternions (w + xi + yj + zk) - * - cgm_m... functions are operations on 4x4 matrices (stored as linear 16 float arrays) - * - cgm_r... functions are operations on cgm_ray rays - * - * NOTE: *ALL* matrix arguments are pointers to 16 floats. Even the functions - * which operate on 3x3 matrices, actually use the upper 3x3 of a 4x4 matrix, - * and still expect an array of 16 floats. - * - * NOTE: matrices are treated by all operations as column-major, to match OpenGL - * conventions, so everything is pretty much transposed. -*/ -#ifndef CGMATH_H_ -#define CGMATH_H_ - -#include -#include - -typedef struct { - float x, y, z; -} cgm_vec3; - -typedef struct { - float x, y, z, w; -} cgm_vec4, cgm_quat; - -typedef struct { - cgm_vec3 origin, dir; -} cgm_ray; - -typedef enum cgm_euler_mode { - CGM_EULER_XYZ, - CGM_EULER_XZY, - CGM_EULER_YXZ, - CGM_EULER_YZX, - CGM_EULER_ZXY, - CGM_EULER_ZYX, - CGM_EULER_ZXZ, - CGM_EULER_ZYZ, - CGM_EULER_YXY, - CGM_EULER_YZY, - CGM_EULER_XYX, - CGM_EULER_XZX -} cgm_euler_mode; - -#ifdef __cplusplus -extern "C" { -#endif - -/* --- operations on cgm_vec3 --- */ -static inline void cgm_vcons(cgm_vec3 *v, float x, float y, float z); - -static inline void cgm_vadd(cgm_vec3 *a, const cgm_vec3 *b); -static inline void cgm_vsub(cgm_vec3 *a, const cgm_vec3 *b); -static inline void cgm_vmul(cgm_vec3 *a, const cgm_vec3 *b); -static inline void cgm_vscale(cgm_vec3 *v, float s); -static inline void cgm_vmul_m4v3(cgm_vec3 *v, const float *m); /* m4x4 * v */ -static inline void cgm_vmul_v3m4(cgm_vec3 *v, const float *m); /* v * m4x4 */ -static inline void cgm_vmul_m3v3(cgm_vec3 *v, const float *m); /* m3x3 * v (m still 16 floats) */ -static inline void cgm_vmul_v3m3(cgm_vec3 *v, const float *m); /* v * m3x3 (m still 16 floats) */ - -static inline float cgm_vdot(const cgm_vec3 *a, const cgm_vec3 *b); -static inline void cgm_vcross(cgm_vec3 *res, const cgm_vec3 *a, const cgm_vec3 *b); -static inline float cgm_vlength(const cgm_vec3 *v); -static inline float cgm_vlength_sq(const cgm_vec3 *v); -static inline float cgm_vdist(const cgm_vec3 *a, const cgm_vec3 *b); -static inline float cgm_vdist_sq(const cgm_vec3 *a, const cgm_vec3 *b); -static inline void cgm_vnormalize(cgm_vec3 *v); - -static inline void cgm_vreflect(cgm_vec3 *v, const cgm_vec3 *n); -static inline void cgm_vrefract(cgm_vec3 *v, const cgm_vec3 *n, float ior); - -static inline void cgm_vrotate_quat(cgm_vec3 *v, const cgm_quat *q); -static inline void cgm_vrotate_axis(cgm_vec3 *v, int axis, float angle); -static inline void cgm_vrotate(cgm_vec3 *v, float angle, float x, float y, float z); -static inline void cgm_vrotate_euler(cgm_vec3 *v, float a, float b, float c, enum cgm_euler_mode mode); - -static inline void cgm_vlerp(cgm_vec3 *res, const cgm_vec3 *a, const cgm_vec3 *b, float t); - -/* --- operations on cgm_vec4 --- */ -static inline void cgm_wcons(cgm_vec4 *v, float x, float y, float z, float w); - -static inline void cgm_wadd(cgm_vec4 *a, const cgm_vec4 *b); -static inline void cgm_wsub(cgm_vec4 *a, const cgm_vec4 *b); -static inline void cgm_wmul(cgm_vec4 *a, const cgm_vec4 *b); -static inline void cgm_wscale(cgm_vec4 *v, float s); - -static inline void cgm_wmul_m4v4(cgm_vec4 *v, const float *m); -static inline void cgm_wmul_v4m4(cgm_vec4 *v, const float *m); -static inline void cgm_wmul_m34v4(cgm_vec4 *v, const float *m); /* doesn't affect w */ -static inline void cgm_wmul_v4m43(cgm_vec4 *v, const float *m); /* doesn't affect w */ -static inline void cgm_wmul_m3v4(cgm_vec4 *v, const float *m); /* (m still 16 floats) */ -static inline void cgm_wmul_v4m3(cgm_vec4 *v, const float *m); /* (m still 16 floats) */ - -static inline float cgm_wlength(const cgm_vec4 *v); -static inline float cgm_wlength_sq(const cgm_vec4 *v); -static inline float cgm_wdist(const cgm_vec4 *a, const cgm_vec4 *b); -static inline float cgm_wdist_sq(const cgm_vec4 *a, const cgm_vec4 *b); -static inline void cgm_wnormalize(cgm_vec4 *v); - -static inline void cgm_wlerp(cgm_vec4 *res, const cgm_vec4 *a, const cgm_vec4 *b, float t); - -/* --- operations on quaternions --- */ -static inline void cgm_qcons(cgm_quat *q, float x, float y, float z, float w); - -static inline void cgm_qneg(cgm_quat *q); -static inline void cgm_qadd(cgm_quat *a, const cgm_quat *b); -static inline void cgm_qsub(cgm_quat *a, const cgm_quat *b); -static inline void cgm_qmul(cgm_quat *a, const cgm_quat *b); - -static inline float cgm_qlength(const cgm_quat *q); -static inline float cgm_qlength_sq(const cgm_quat *q); -static inline void cgm_qnormalize(cgm_quat *q); -static inline void cgm_qconjugate(cgm_quat *q); -static inline void cgm_qinvert(cgm_quat *q); - -static inline void cgm_qrotation(cgm_quat *q, const cgm_vec3 *axis, float angle); -static inline void cgm_qrotate(cgm_quat *q, const cgm_vec3 *axis, float angle); - -static inline void cgm_qslerp(cgm_quat *res, const cgm_quat *a, const cgm_quat *b, float t); -static inline void cgm_qlerp(cgm_quat *res, const cgm_quat *a, const cgm_quat *b, float t); - -/* --- operations on matrices --- */ -static inline void cgm_mcopy(float *dest, const float *src); -static inline void cgm_mzero(float *m); -static inline void cgm_midentity(float *m); - -static inline void cgm_mmul(float *a, const float *b); - -static inline void cgm_msubmatrix(float *m, int row, int col); -static inline void cgm_mupper3(float *m); -static inline float cgm_msubdet(const float *m, int row, int col); -static inline float cgm_mcofactor(const float *m, int row, int col); -static inline float cgm_mdet(const float *m); -static inline void cgm_mtranspose(float *m); -static inline void cgm_mcofmatrix(float *m); -static inline int cgm_minverse(float *m); /* returns 0 on success, -1 for singular */ - -static inline void cgm_mtranslation(float *m, float x, float y, float z); -static inline void cgm_mscaling(float *m, float sx, float sy, float sz); -static inline void cgm_mrotation_x(float *m, float angle); -static inline void cgm_mrotation_y(float *m, float angle); -static inline void cgm_mrotation_z(float *m, float angle); -static inline void cgm_mrotation_axis(float *m, int idx, float angle); -static inline void cgm_mrotation(float *m, float angle, float x, float y, float z); -static inline void cgm_mrotation_euler(float *m, float a, float b, float c, int mode); - -static inline void cgm_mtranslate(float *m, float x, float y, float z); -static inline void cgm_mscale(float *m, float sx, float sy, float sz); -static inline void cgm_mrotate_x(float *m, float angle); -static inline void cgm_mrotate_y(float *m, float angle); -static inline void cgm_mrotate_z(float *m, float angle); -static inline void cgm_mrotate_axis(float *m, int idx, float angle); -static inline void cgm_mrotate(float *m, float angle, float x, float y, float z); -static inline void cgm_mrotate_euler(float *m, float a, float b, float c, int mode); - -static inline void cgm_mpretranslate(float *m, float x, float y, float z); -static inline void cgm_mprescale(float *m, float sx, float sy, float sz); -static inline void cgm_mprerotate_x(float *m, float angle); -static inline void cgm_mprerotate_y(float *m, float angle); -static inline void cgm_mprerotate_z(float *m, float angle); -static inline void cgm_mprerotate_axis(float *m, int idx, float angle); -static inline void cgm_mprerotate(float *m, float angle, float x, float y, float z); -static inline void cgm_mprerotate_euler(float *m, float a, float b, float c, int mode); - -static inline void cgm_mget_translation(const float *m, cgm_vec3 *res); -static inline void cgm_mget_rotation(const float *m, cgm_quat *res); -static inline void cgm_mget_scaling(const float *m, cgm_vec3 *res); -static inline void cgm_mget_frustum_plane(const float *m, int p, cgm_vec4 *res); - -static inline void cgm_mlookat(float *m, const cgm_vec3 *pos, const cgm_vec3 *targ, - const cgm_vec3 *up); -static inline void cgm_minv_lookat(float *m, const cgm_vec3 *pos, const cgm_vec3 *targ, - const cgm_vec3 *up); -static inline void cgm_mortho(float *m, float left, float right, float bot, float top, - float znear, float zfar); -static inline void cgm_mfrustum(float *m, float left, float right, float bot, float top, - float znear, float zfar); -static inline void cgm_mperspective(float *m, float vfov, float aspect, float znear, float zfar); - -static inline void cgm_mmirror(float *m, float a, float b, float c, float d); - -/* --- operations on rays --- */ -static inline void cgm_rcons(cgm_ray *r, float x, float y, float z, float dx, float dy, float dz); - -static inline void cgm_rmul_mr(cgm_ray *ray, const float *m); /* m4x4 * ray */ -static inline void cgm_rmul_rm(cgm_ray *ray, const float *m); /* ray * m4x4 */ - -static inline void cgm_rreflect(cgm_ray *ray, const cgm_vec3 *n); -static inline void cgm_rrefract(cgm_ray *ray, const cgm_vec3 *n, float ior); - -/* --- miscellaneous utility functions --- */ -static inline float cgm_deg_to_rad(float deg); -static inline float cgm_rad_to_deg(float rad); - -static inline float cgm_smoothstep(float a, float b, float x); -static inline float cgm_bezier(float a, float b, float c, float d, float t); - -static inline void cgm_discrand(cgm_vec3 *v, float rad); -static inline void cgm_sphrand(cgm_vec3 *v, float rad); - -static inline void cgm_unproject(cgm_vec3 *res, const cgm_vec3 *norm_scrpos, - const float *inv_viewproj); -static inline void cgm_glu_unproject(float winx, float winy, float winz, - const float *view, const float *proj, const int *vp, - float *objx, float *objy, float *objz); - -static inline void cgm_pick_ray(cgm_ray *ray, float nx, float ny, - const float *viewmat, const float *projmat); - -static inline void cgm_raypos(cgm_vec3 *p, const cgm_ray *ray, float t); - -/* calculate barycentric coordinates of point pt in triangle (a, b, c) */ -static inline void cgm_bary(cgm_vec3 *bary, const cgm_vec3 *a, - const cgm_vec3 *b, const cgm_vec3 *c, const cgm_vec3 *pt); - -#include "cgmvec3.inl" -#include "cgmvec4.inl" -#include "cgmquat.inl" -#include "cgmmat.inl" -#include "cgmray.inl" -#include "cgmmisc.inl" - -#ifdef __cplusplus -} -#endif - -#endif /* CGMATH_H_ */