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vec3.c
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vec3.c
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/*
* Copyright 2018 Anish Bhobe, glmc Contributors
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software
* and associated documentation files (the "Software"),
* to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify,
* merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the
* ollowing conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "glmc.h"
#include "math.h"
inline void glmc_vec3f_from_2f(vec3f dest, vec2f src_a, float src_b){
dest[0]=src_a[0];
dest[1]=src_a[1];
dest[2]=src_b;
}
inline void glmc_vec3f_from_4f(vec3f dest, vec4f src){
dest[0]=src[0];
dest[1]=src[1];
dest[2]=src[2];
}
inline void glmc_vec3f_copy(vec3f dest, vec3f src){
dest[0]=src[0];
dest[1]=src[1];
dest[2]=src[2];
}
float glmc_vec3f_sqrlength(vec3f vec){
return ((vec[0]*vec[0])+(vec[1]*vec[1])+(vec[2]*vec[2]));
}
float glmc_vec3f_length(vec3f vec){
return sqrt(glmc_vec3f_sqrlength(vec));
}
int glmc_vec3f_is_normalized(vec3f src){
if (((int)glmc_vec3f_length(src))==1){
return 1;
}
else return 0;
}
inline void glmc_vec3f_normlize(vec3f dest, vec3f src){
float length = glmc_vec3f_length(src);
dest[0] = (src[0]/length);
dest[1] = (src[1]/length);
dest[2] = (src[2]/length);
}
// dest = src_a + src_b;
inline void glmc_vec3f_add(vec3f dest, vec3f src_a, vec3f src_b){
dest[0] = src_a[0] + src_b[0];
dest[1] = src_a[1] + src_b[1];
dest[2] = src_a[2] + src_b[2];
}
// dest += src_a;
inline void glmc_vec3f_add_dest(vec3f src_dest, vec3f src_b){
src_dest[0] += src_b[0];
src_dest[1] += src_b[1];
src_dest[2] += src_b[2];
}
// dest = src_a - src_b;
inline void glmc_vec3f_sub(vec3f dest, vec3f src_a, vec3f src_b){
dest[0] = src_a[0] - src_b[0];
dest[1] = src_a[1] - src_b[1];
dest[2] = src_a[2] - src_b[2];
}
// dest -= src_a;
inline void glmc_vec3f_sub_dest(vec3f src_dest, vec3f src_b){
src_dest[0] -= src_b[0];
src_dest[1] -= src_b[1];
src_dest[2] -= src_b[2];
}
// dest = src_a * src_b;
inline void glmc_vec3f_mul(vec3f dest, vec3f src_a, vec3f src_b){
dest[0] = src_a[0] * src_b[0];
dest[1] = src_a[1] * src_b[1];
dest[2] = src_a[2] * src_b[2];
}
// dest *= src_a;
inline void glmc_vec3f_mul_dest(vec3f src_dest, vec3f src_b){
src_dest[0] *= src_b[0];
src_dest[1] *= src_b[1];
src_dest[2] *= src_b[2];
}
// dest = src_a * scalar
inline void glmc_vec3f_mul_s(vec3f dest, vec3f src_a, float src_b){
dest[0] = src_a[0] * src_b;
dest[1] = src_a[1] * src_b;
dest[2] = src_a[2] * src_b;
}
// dest = src_a / src_b;
inline void glmc_vec3f_div(vec3f dest, vec3f src_a, vec3f src_b){
dest[0] = src_a[0] / src_b[0];
dest[1] = src_a[1] / src_b[1];
dest[2] = src_a[2] / src_b[2];
}
// dest /= src_a;
inline void glmc_vec3f_div_dest(vec3f src_dest, vec3f src_b){
src_dest[0] /= src_b[0];
src_dest[1] /= src_b[1];
src_dest[2] /= src_b[2];
}
// dest = src_a / scalar
inline void glmc_vec3f_div_s(vec3f dest, vec3f src_a, float src_b){
dest[0] = src_a[0] / src_b;
dest[1] = src_a[1] / src_b;
dest[2] = src_a[2] / src_b;
}
// dest += src_a + src_b;
inline void glmc_vec3f_addadd(vec3f dest, vec3f src_a, vec3f src_b){
dest[0] += src_a[0] + src_b[0];
dest[1] += src_a[1] + src_b[1];
dest[2] += src_a[2] + src_b[2];
}
// dest += src_a - src_b;
inline void glmc_vec3f_subadd(vec3f dest, vec3f src_a, vec3f src_b){
dest[0] += src_a[0] - src_b[0];
dest[1] += src_a[1] - src_b[1];
dest[2] += src_a[2] - src_b[2];
}
// dest += src_a * src_b;
inline void glmc_vec3f_madd(vec3f dest, vec3f src_a, vec3f src_b){
dest[0] += src_a[0] * src_b[0];
dest[1] += src_a[1] * src_b[1];
dest[2] += src_a[2] * src_b[2];
}
// dest -= src_a * src_b;
inline void glmc_vec3f_msub(vec3f dest, vec3f src_a, vec3f src_b){
dest[0] -= src_a[0] * src_b[0];
dest[1] -= src_a[1] * src_b[1];
dest[2] -= src_a[2] * src_b[2];
}
float glmc_vec3f_dot(vec3f src_a, vec3f src_b){
return ( (src_a[0] * src_b[0]) + (src_a[1] * src_b[1]) + (src_a[2] * src_b[2]) );
}
inline void glmc_vec3f_cross(vec3f dest, vec3f src_a, vec3f src_b){
dest[0] = (src_a[1]*src_b[2]) - (src_b[1]*src_a[2]);
dest[1] = (src_a[2]*src_b[0]) - (src_b[2]*src_a[0]);
dest[2] = (src_a[0]*src_b[1]) - (src_b[0]*src_a[1]);
}