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151 lines
2.5 KiB
C
151 lines
2.5 KiB
C
/*
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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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#ifndef cglm_affine_h
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#define cglm_affine_h
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#include "cglm.h"
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CGLM_INLINE
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void
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glm_translate_to(mat4 m, vec3 v, mat4 dest) {
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vec4 v1;
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vec4 v2;
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vec4 v3;
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mat4 t = GLM_MAT_IDENTITY_4F;
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glm_vec4_scale(t[0], v[0], v1);
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glm_vec4_scale(t[1], v[1], v2);
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glm_vec4_scale(t[2], v[2], v3);
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glm_vec4_add(v1, t[3], t[3]);
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glm_vec4_add(v2, t[3], t[3]);
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glm_vec4_add(v3, t[3], t[3]);
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glm__memcpy(float, dest, t, sizeof(mat4));
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}
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CGLM_INLINE
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void
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glm_translate(mat4 m, vec3 v) {
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vec4 v1;
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vec4 v2;
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vec4 v3;
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glm_vec4_scale(m[0], v[0], v1);
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glm_vec4_scale(m[1], v[1], v2);
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glm_vec4_scale(m[2], v[2], v3);
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glm_vec4_add(v1, m[3], m[3]);
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glm_vec4_add(v2, m[3], m[3]);
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glm_vec4_add(v3, m[3], m[3]);
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}
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CGLM_INLINE
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void
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glm_translate_x(mat4 m, float to) {
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vec4 v1;
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glm_vec4_scale(m[0], to, v1);
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glm_vec4_add(v1, m[3], m[3]);
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}
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CGLM_INLINE
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void
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glm_translate_y(mat4 m, float to) {
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vec4 v1;
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glm_vec4_scale(m[1], to, v1);
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glm_vec4_add(v1, m[3], m[3]);
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}
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CGLM_INLINE
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void
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glm_translate_z(mat4 m, float to) {
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vec4 v1;
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glm_vec4_scale(m[2], to, v1);
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glm_vec4_add(v1, m[3], m[3]);
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}
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/* scale */
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CGLM_INLINE
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void
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glm_scale_to(mat4 m, vec3 v, mat4 dest) {
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glm_vec4_scale(m[0], v[0], dest[0]);
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glm_vec4_scale(m[1], v[1], dest[1]);
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glm_vec4_scale(m[2], v[2], dest[2]);
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glm_vec4_dup(m[3], dest[3]);
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}
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CGLM_INLINE
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void
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glm_scale(mat4 m, vec3 v) {
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glm_scale_to(m, v, m);
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}
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CGLM_INLINE
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void
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glm_scale1(mat4 m, float s) {
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glm_scale_to(m, (vec3){s, s, s}, m);
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}
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CGLM_INLINE
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void
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glm_rotate_x(mat4 m, float rad, mat4 dest) {
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float cosVal;
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float sinVal;
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mat4 t = GLM_MAT_IDENTITY_4F;
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cosVal = cos(rad);
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sinVal = sin(rad);
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t[1][1] = cosVal;
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t[1][2] = sinVal;
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t[2][1] = -sinVal;
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t[2][2] = cosVal;
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glm_mat_mul4(t, m, dest);
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}
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CGLM_INLINE
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void
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glm_rotate_y(mat4 m, float rad, mat4 dest) {
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float cosVal;
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float sinVal;
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mat4 t = GLM_MAT_IDENTITY_4F;
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cosVal = cos(rad);
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sinVal = sin(rad);
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t[0][0] = cosVal;
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t[0][2] = -sinVal;
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t[2][0] = sinVal;
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t[2][2] = cosVal;
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glm_mat_mul4(t, m, dest);
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}
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CGLM_INLINE
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void
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glm_rotate_z(mat4 m, float rad, mat4 dest) {
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float cosVal;
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float sinVal;
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mat4 t = GLM_MAT_IDENTITY_4F;
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cosVal = cos(rad);
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sinVal = sin(rad);
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t[0][0] = cosVal;
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t[0][1] = sinVal;
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t[1][0] = -sinVal;
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t[1][1] = cosVal;
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glm_mat_mul4(t, m, dest);
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}
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#endif /* cglm_affine_h */
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