gpuray_glsl

annotate vmath/vmath.h @ 3:297dbc5080c4

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cone intersection
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 09 Nov 2014 20:13:33 +0200
parents f234630e38ff
children
rev   line source
nuclear@0 1 /*
nuclear@0 2 libvmath - a vector math library
nuclear@0 3 Copyright (C) 2004-2013 John Tsiombikas <nuclear@member.fsf.org>
nuclear@0 4
nuclear@0 5 This program is free software: you can redistribute it and/or modify
nuclear@0 6 it under the terms of the GNU Lesser General Public License as published
nuclear@0 7 by the Free Software Foundation, either version 3 of the License, or
nuclear@0 8 (at your option) any later version.
nuclear@0 9
nuclear@0 10 This program is distributed in the hope that it will be useful,
nuclear@0 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@0 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
nuclear@0 13 GNU Lesser General Public License for more details.
nuclear@0 14
nuclear@0 15 You should have received a copy of the GNU Lesser General Public License
nuclear@0 16 along with this program. If not, see <http://www.gnu.org/licenses/>.
nuclear@0 17 */
nuclear@0 18
nuclear@0 19 #ifndef VMATH_H_
nuclear@0 20 #define VMATH_H_
nuclear@0 21
nuclear@0 22 #include <math.h>
nuclear@0 23 #include "vmath_types.h"
nuclear@0 24
nuclear@0 25 #ifndef M_PI
nuclear@0 26 #define M_PI PI
nuclear@0 27 #endif
nuclear@0 28
nuclear@0 29 #ifndef M_E
nuclear@0 30 #define M_E 2.718281828459045
nuclear@0 31 #endif
nuclear@0 32
nuclear@0 33 #define PI 3.141592653589793
nuclear@0 34 #define HALF_PI 1.570796326794897
nuclear@0 35 #define QUARTER_PI 0.785398163397448
nuclear@0 36 #define TWO_PI 6.283185307179586
nuclear@0 37
nuclear@0 38
nuclear@0 39 #define RAD_TO_DEG(a) ((((scalar_t)a) * 360.0) / TWO_PI)
nuclear@0 40 #define DEG_TO_RAD(a) (((scalar_t)a) * (PI / 180.0))
nuclear@0 41
nuclear@0 42 #define SQ(x) ((x) * (x))
nuclear@0 43
nuclear@0 44 #define MIN(a, b) ((a) < (b) ? (a) : (b))
nuclear@0 45 #define MAX(a, b) ((a) > (b) ? (a) : (b))
nuclear@0 46
nuclear@0 47 #ifdef __cplusplus
nuclear@0 48 extern "C" {
nuclear@0 49 #endif /* __cplusplus */
nuclear@0 50
nuclear@0 51 static inline scalar_t smoothstep(float a, float b, float x);
nuclear@0 52
nuclear@0 53 static inline scalar_t frand(scalar_t range);
nuclear@0 54 static inline vec3_t sphrand(scalar_t rad);
nuclear@0 55
nuclear@0 56 scalar_t integral(scalar_t (*f)(scalar_t), scalar_t low, scalar_t high, int samples);
nuclear@0 57 scalar_t gaussian(scalar_t x, scalar_t mean, scalar_t sdev);
nuclear@0 58
nuclear@0 59 static inline scalar_t lerp(scalar_t a, scalar_t b, scalar_t t);
nuclear@0 60
nuclear@0 61 scalar_t bspline(scalar_t a, scalar_t b, scalar_t c, scalar_t d, scalar_t t);
nuclear@0 62 scalar_t spline(scalar_t a, scalar_t b, scalar_t c, scalar_t d, scalar_t t);
nuclear@0 63 scalar_t bezier(scalar_t a, scalar_t b, scalar_t c, scalar_t d, scalar_t t);
nuclear@0 64
nuclear@0 65 scalar_t noise1(scalar_t x);
nuclear@0 66 scalar_t noise2(scalar_t x, scalar_t y);
nuclear@0 67 scalar_t noise3(scalar_t x, scalar_t y, scalar_t z);
nuclear@0 68
nuclear@0 69 scalar_t fbm1(scalar_t x, int octaves);
nuclear@0 70 scalar_t fbm2(scalar_t x, scalar_t y, int octaves);
nuclear@0 71 scalar_t fbm3(scalar_t x, scalar_t y, scalar_t z, int octaves);
nuclear@0 72
nuclear@0 73 scalar_t turbulence1(scalar_t x, int octaves);
nuclear@0 74 scalar_t turbulence2(scalar_t x, scalar_t y, int octaves);
nuclear@0 75 scalar_t turbulence3(scalar_t x, scalar_t y, scalar_t z, int octaves);
nuclear@0 76
nuclear@0 77 #ifdef __cplusplus
nuclear@0 78 }
nuclear@0 79 #endif /* __cplusplus */
nuclear@0 80
nuclear@0 81 #include "vmath.inl"
nuclear@0 82
nuclear@0 83 #include "vector.h"
nuclear@0 84 #include "matrix.h"
nuclear@0 85 #include "quat.h"
nuclear@0 86 #include "ray.h"
nuclear@0 87
nuclear@0 88 #endif /* VMATH_H_ */