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implement project zo

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Recep Aslantas
2021-08-16 14:16:43 +03:00
parent 4530e0381b
commit 29c3837672
8 changed files with 86 additions and 13 deletions
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17
include/cglm/project.h
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@@ -107,18 +107,11 @@ glm_unproject(vec3 pos, mat4 m, vec4 vp, vec3 dest) {
CGLM_INLINE
void
glm_project(vec3 pos, mat4 m, vec4 vp, vec3 dest) {
CGLM_ALIGN(16) vec4 pos4, vone = GLM_VEC4_ONE_INIT;
glm_vec4(pos, 1.0f, pos4);
glm_mat4_mulv(m, pos4, pos4);
glm_vec4_scale(pos4, 1.0f / pos4[3], pos4); /* pos = pos / pos.w */
glm_vec4_add(pos4, vone, pos4);
glm_vec4_scale(pos4, 0.5f, pos4);
dest[0] = pos4[0] * vp[2] + vp[0];
dest[1] = pos4[1] * vp[3] + vp[1];
dest[2] = pos4[2];
#if CGLM_CONFIG_CLIP_CONTROL & CGLM_CLIP_CONTROL_ZO_BIT
glm_project_zo(pos, m, vp, dest);
#elif CGLM_CONFIG_CLIP_CONTROL & CGLM_CLIP_CONTROL_NO_BIT
glm_project_no(pos, m, vp, dest);
#endif
}
#endif /* cglm_project_h */