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274
external/cglm/struct/mat2.h
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274
external/cglm/struct/mat2.h
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/*
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* Copyright (c), Recep Aslantas.
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*
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* MIT License (MIT), http://opensource.org/licenses/MIT
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* Full license can be found in the LICENSE file
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*/
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/*
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Macros:
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GLM_MAT2_IDENTITY_INIT
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GLM_MAT2_ZERO_INIT
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GLM_MAT2_IDENTITY
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GLM_MAT2_ZERO
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Functions:
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CGLM_INLINE mat2s glms_mat2_make(const float * __restrict src);
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CGLM_INLINE mat2s glms_mat2_identity(void)
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CGLM_INLINE void glms_mat2_identity_array(mat2 * restrict mats, size_t count)
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CGLM_INLINE mat2s glms_mat2_zero(void)
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CGLM_INLINE mat2s glms_mat2_mul(mat2 m1, mat2 m2)
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CGLM_INLINE vec2s glms_mat2_mulv(mat2 m, vec2 v)
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CGLM_INLINE mat2s glms_mat2_transpose(mat2 m)
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CGLM_INLINE mat2s glms_mat2_scale(mat2 m, float s)
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CGLM_INLINE mat2s glms_mat2_inv(mat2 m)
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CGLM_INLINE mat2s glms_mat2_swap_col(mat2 mat, int col1, int col2)
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CGLM_INLINE mat2s glms_mat2_swap_row(mat2 mat, int row1, int row2)
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CGLM_INLINE float glms_mat2_det(mat2 m)
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CGLM_INLINE float glms_mat2_trace(mat2 m)
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CGLM_INLINE float glms_mat2_rmc(vec2 r, mat2 m, vec2 c)
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*/
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#ifndef cglms_mat2_h
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#define cglms_mat2_h
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#include "../common.h"
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#include "../types-struct.h"
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#include "../mat2.h"
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/* api definition */
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#define glms_mat2_(NAME) CGLM_STRUCTAPI(mat2, NAME)
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#define GLMS_MAT2_IDENTITY_INIT {GLM_MAT2_IDENTITY_INIT}
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#define GLMS_MAT2_ZERO_INIT {GLM_MAT2_ZERO_INIT}
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/* for C only */
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#define GLMS_MAT2_IDENTITY ((mat2s)GLMS_MAT2_IDENTITY_INIT)
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#define GLMS_MAT2_ZERO ((mat2s)GLMS_MAT2_ZERO_INIT)
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/*!
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* @brief Returns mat2s (r) from pointer (src).
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*
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* @param[in] src pointer to an array of floats
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* @return[out] r constructed mat2s from raw pointer
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*/
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CGLM_INLINE
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mat2s
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glms_mat2_(make)(const float * __restrict src) {
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mat2s r;
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glm_mat2_make(src, r.raw);
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return r;
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}
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/*!
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* @brief Return a identity mat2s (r).
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*
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* The same thing may be achieved with either of bellow methods,
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* but it is more easy to do that with this func especially for members
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* e.g. glm_mat2_identity(aStruct->aMatrix);
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*
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* @code
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* glm_mat2_copy(GLM_MAT2_IDENTITY, mat); // C only
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*
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* // or
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* mat2 mat = GLM_MAT2_IDENTITY_INIT;
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* @endcode
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*
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* @return[out] r constructed mat2s from raw pointer
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*/
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CGLM_INLINE
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mat2s
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glms_mat2_(identity)(void) {
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mat2s r;
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glm_mat2_identity(r.raw);
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return r;
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}
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/*!
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* @brief Given an array of mat2s’s (mats) make each matrix an identity matrix.
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*
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* @param[in, out] mats Array of mat2s’s (must be aligned (16/32) if alignment is not disabled)
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* @param[in] count Array size of mats or number of matrices
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*/
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CGLM_INLINE
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void
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glms_mat2_(identity_array)(mat2s * __restrict mats, size_t count) {
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CGLM_ALIGN_MAT mat2s t = GLMS_MAT2_IDENTITY_INIT;
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size_t i;
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for (i = 0; i < count; i++) {
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glm_mat2_copy(t.raw, mats[i].raw);
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}
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}
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/*!
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* @brief Return zero'd out mat2 (r).
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*
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* @return[out] r constructed mat2s from raw pointer
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*/
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CGLM_INLINE
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mat2s
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glms_mat2_(zero)(void) {
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mat2s r;
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glm_mat2_zero(r.raw);
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return r;
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}
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/*!
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* @brief Multiply mat2 (m1) by mat2 (m2) and return in mat2s (r)
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*
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* m1 and m2 matrices can be the same matrix, it is possible to write this:
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*
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* @code
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* mat2 m = GLM_MAT2_IDENTITY_INIT;
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* mat2s r = glms_mat2_mul(m, m);
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* @endcode
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*
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* @param[in] m1 mat2s (left)
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* @param[in] m2 mat2s (right)
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* @return[out] r constructed mat2s from raw pointers
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*/
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CGLM_INLINE
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mat2s
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glms_mat2_(mul)(mat2s m1, mat2s m2) {
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mat2s r;
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glm_mat2_mul(m1.raw, m2.raw, r.raw);
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return r;
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}
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/*
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* @brief Multiply mat2s (m) by vec2s (v) and return in vec2s (r).
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*
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* @param[in] m mat2s (left)
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* @param[in] v vec2s (right, column vector)
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* @return[out] r constructed vec2s from raw pointers
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*/
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CGLM_INLINE
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vec2s
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glms_mat2_(mulv)(mat2s m, vec2s v) {
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vec2s r;
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glm_mat2_mulv(m.raw, v.raw, r.raw);
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return r;
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}
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/*!
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* @brief Transpose mat2s (m) and store result in the same matrix.
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*
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* @param[in] m mat2s (src)
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* @return[out] m constructed mat2s from raw pointers
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*/
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CGLM_INLINE
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mat2s
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glms_mat2_(transpose)(mat2s m) {
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glm_mat2_transpose(m.raw);
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return m;
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}
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/*!
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* @brief Multiply mat2s (m) by scalar constant (s)
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*
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* @param[in] m mat2s (src)
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* @param[in] s scalar value
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* @return[out] m constructed mat2s from raw pointers
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*/
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CGLM_INLINE
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mat2s
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glms_mat2_(scale)(mat2s m, float s) {
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glm_mat2_scale(m.raw, s);
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return m;
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}
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/*!
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* @brief Inverse mat2s (m) and return in mat2s (r).
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*
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* @param[in] m mat2s (left, src)
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* @return[out] r constructed mat2s from raw pointers
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*/
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CGLM_INLINE
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mat2s
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glms_mat2_(inv)(mat2s m) {
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mat2s r;
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glm_mat2_inv(m.raw, r.raw);
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return r;
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}
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/*!
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* @brief Swap two columns in mat2s (mat) and store in same matrix.
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*
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* @param[in] mat mat2s
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* @param[in] col1 column 1 array index
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* @param[in] col2 column 2 array index
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* @return[out] mat constructed mat2s from raw pointers columns swapped
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*/
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CGLM_INLINE
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mat2s
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glms_mat2_(swap_col)(mat2s mat, int col1, int col2) {
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glm_mat2_swap_col(mat.raw, col1, col2);
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return mat;
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}
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/*!
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* @brief Swap two rows in mat2s (mat) and store in same matrix.
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*
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* @param[in] mat mat2s
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* @param[in] row1 row 1 array index
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* @param[in] row2 row 2 array index
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* @return[out] mat constructed mat2s from raw pointers rows swapped
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*/
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CGLM_INLINE
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mat2s
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glms_mat2_(swap_row)(mat2s mat, int row1, int row2) {
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glm_mat2_swap_row(mat.raw, row1, row2);
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return mat;
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}
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/*!
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* @brief Returns mat2 determinant.
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*
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* @param[in] m mat2 (src)
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*
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* @return[out] mat2s raw pointers determinant (float)
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*/
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CGLM_INLINE
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float
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glms_mat2_(det)(mat2s m) {
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return glm_mat2_det(m.raw);
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}
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/*!
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* @brief Returns trace of matrix. Which is:
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*
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* The sum of the elements on the main diagonal from
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* upper left corner to the bottom right corner.
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*
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* @param[in] m mat2 (m)
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*
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* @return[out] mat2s raw pointers trace (float)
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*/
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CGLM_INLINE
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float
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glms_mat2_(trace)(mat2s m) {
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return glm_mat2_trace(m.raw);
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}
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/*!
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* @brief Helper for R (row vector) * M (matrix) * C (column vector)
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*
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* rmc stands for Row * Matrix * Column
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*
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* the result is scalar because M * C = ResC (1x2, column vector),
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* then if you take the dot_product(R (2x1), ResC (1x2)) = scalar value.
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*
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* @param[in] r vec2s (2x1, row vector)
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* @param[in] m mat2s (2x2, matrix)
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* @param[in] c vec2s (1x2, column vector)
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*
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* @return[out] Scalar value (float, 1x1)
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*/
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CGLM_INLINE
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float
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glms_mat2_(rmc)(vec2s r, mat2s m, vec2s c) {
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return glm_mat2_rmc(r.raw, m.raw, c.raw);
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}
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#endif /* cglms_mat2_h */
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