165 lines
3.6 KiB
C
165 lines
3.6 KiB
C
/*
|
|
* Copyright (c), Recep Aslantas.
|
|
*
|
|
* MIT License (MIT), http://opensource.org/licenses/MIT
|
|
* Full license can be found in the LICENSE file
|
|
*/
|
|
|
|
/*
|
|
Macros:
|
|
GLM_MAT3X2_ZERO_INIT
|
|
GLM_MAT3X2_ZERO
|
|
|
|
Functions:
|
|
CGLM_INLINE void glm_mat3x2_copy(mat3x2 mat, mat3x2 dest);
|
|
CGLM_INLINE void glm_mat3x2_zero(mat3x2 mat);
|
|
CGLM_INLINE void glm_mat3x2_make(float * __restrict src, mat3x2 dest);
|
|
CGLM_INLINE void glm_mat3x2_mul(mat3x2 m1, mat2x3 m2, mat3 dest);
|
|
CGLM_INLINE void glm_mat3x2_mulv(mat3x2 m, vec2 v, vec3 dest);
|
|
CGLM_INLINE void glm_mat3x2_transpose(mat3x2 m, mat2x3 dest);
|
|
CGLM_INLINE void glm_mat3x2_scale(mat3x2 m, float s);
|
|
*/
|
|
|
|
#ifndef cglm_mat3x2_h
|
|
#define cglm_mat3x2_h
|
|
|
|
#include "common.h"
|
|
|
|
#define GLM_MAT3X2_ZERO_INIT {{0.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f}}
|
|
|
|
/* for C only */
|
|
#define GLM_MAT3X2_ZERO GLM_MAT3X2_ZERO_INIT
|
|
|
|
/*!
|
|
* @brief copy all members of [mat] to [dest]
|
|
*
|
|
* @param[in] mat source
|
|
* @param[out] dest destination
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_mat3x2_copy(mat3x2 mat, mat3x2 dest) {
|
|
dest[0][0] = mat[0][0];
|
|
dest[0][1] = mat[0][1];
|
|
|
|
dest[1][0] = mat[1][0];
|
|
dest[1][1] = mat[1][1];
|
|
|
|
dest[2][0] = mat[2][0];
|
|
dest[2][1] = mat[2][1];
|
|
}
|
|
|
|
/*!
|
|
* @brief make given matrix zero.
|
|
*
|
|
* @param[in, out] mat matrix
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_mat3x2_zero(mat3x2 mat) {
|
|
CGLM_ALIGN_MAT mat3x2 t = GLM_MAT3X2_ZERO_INIT;
|
|
glm_mat3x2_copy(t, mat);
|
|
}
|
|
|
|
/*!
|
|
* @brief Create mat3x2 matrix from pointer
|
|
*
|
|
* @param[in] src pointer to an array of floats
|
|
* @param[out] dest matrix
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_mat3x2_make(float * __restrict src, mat3x2 dest) {
|
|
dest[0][0] = src[0];
|
|
dest[0][1] = src[1];
|
|
|
|
dest[1][0] = src[2];
|
|
dest[1][1] = src[3];
|
|
|
|
dest[2][0] = src[4];
|
|
dest[2][1] = src[5];
|
|
}
|
|
|
|
/*!
|
|
* @brief multiply m1 and m2 to dest
|
|
*
|
|
* m1, m2 and dest matrices can be same matrix, it is possible to write this:
|
|
*
|
|
* @code
|
|
* glm_mat3x2_mul(m, m, m);
|
|
* @endcode
|
|
*
|
|
* @param[in] m1 left matrix
|
|
* @param[in] m2 right matrix
|
|
* @param[out] dest destination matrix
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_mat3x2_mul(mat3x2 m1, mat2x3 m2, mat3 dest) {
|
|
float a00 = m1[0][0], a01 = m1[0][1],
|
|
a10 = m1[1][0], a11 = m1[1][1],
|
|
a20 = m1[2][0], a21 = m1[2][1],
|
|
|
|
b00 = m2[0][0], b01 = m2[0][1], b02 = m2[0][2],
|
|
b10 = m2[1][0], b11 = m2[1][1], b12 = m2[1][2];
|
|
|
|
dest[0][0] = a00 * b00 + a01 * b10;
|
|
dest[0][1] = a00 * b01 + a01 * b11;
|
|
dest[0][2] = a00 * b02 + a01 * b12;
|
|
|
|
dest[1][0] = a10 * b00 + a11 * b10;
|
|
dest[1][1] = a10 * b01 + a11 * b11;
|
|
dest[1][2] = a10 * b02 + a11 * b12;
|
|
|
|
dest[2][0] = a20 * b00 + a21 * b10;
|
|
dest[2][1] = a20 * b01 + a21 * b11;
|
|
dest[2][2] = a20 * b02 + a21 * b12;
|
|
}
|
|
|
|
/*!
|
|
* @brief multiply matrix with column vector and store in dest vector
|
|
*
|
|
* @param[in] m matrix (left)
|
|
* @param[in] v vector (right, column vector)
|
|
* @param[out] dest result vector
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_mat3x2_mulv(mat3x2 m, vec2 v, vec3 dest) {
|
|
float v0 = v[0], v1 = v[1];
|
|
|
|
dest[0] = m[0][0] * v0 + m[0][1] * v1;
|
|
dest[1] = m[1][0] * v0 + m[1][1] * v1;
|
|
dest[2] = m[2][0] * v0 + m[2][1] * v1;
|
|
}
|
|
|
|
/*!
|
|
* @brief transpose matrix and store in dest
|
|
*
|
|
* @param[in] m matrix
|
|
* @param[out] dest result
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_mat3x2_transpose(mat3x2 m, mat2x3 dest) {
|
|
dest[0][0] = m[0][0]; dest[0][1] = m[1][0]; dest[0][2] = m[2][0];
|
|
dest[1][0] = m[0][1]; dest[1][1] = m[1][1]; dest[1][2] = m[2][1];
|
|
}
|
|
|
|
/*!
|
|
* @brief scale (multiply with scalar) matrix
|
|
*
|
|
* multiply matrix with scalar
|
|
*
|
|
* @param[in, out] m matrix
|
|
* @param[in] s scalar
|
|
*/
|
|
CGLM_INLINE
|
|
void
|
|
glm_mat3x2_scale(mat3x2 m, float s) {
|
|
m[0][0] *= s; m[0][1] *= s; m[1][0] *= s;
|
|
m[1][1] *= s; m[2][0] *= s; m[2][1] *= s;
|
|
}
|
|
|
|
#endif
|