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new project function for projecting Z

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someitmes we need to project z only. this function reduces a few calculations and parameters.
This commit is contained in:
Recep Aslantas
2022-10-21 10:20:03 +03:00
parent 45e176680f
commit ba66459708
7 changed files with 118 additions and 0 deletions
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20
include/cglm/struct/clipspace/project_no.h
View File

@@ -43,6 +43,7 @@
* @param[in] pos point/position in viewport coordinates
* @param[in] invMat matrix (see brief)
* @param[in] vp viewport as [x, y, width, height]
*
* @returns unprojected coordinates
*/
CGLM_INLINE
@@ -63,6 +64,7 @@ glms_unprojecti_no(vec3s pos, mat4s invMat, vec4s vp, vec3 dest) {
* @param[in] pos object coordinates
* @param[in] m MVP matrix
* @param[in] vp viewport as [x, y, width, height]
*
* @returns projected coordinates
*/
CGLM_INLINE
@@ -73,4 +75,22 @@ glms_project_no(vec3s pos, mat4s m, vec4s vp, vec3s dest) {
return dest;
}
/*!
* @brief map object's z coordinate to window coordinates
*
* Computing MVP:
* glm_mat4_mul(proj, view, viewProj);
* glm_mat4_mul(viewProj, model, MVP);
*
* @param[in] v object coordinates
* @param[in] m MVP matrix
*
* @returns projected z coordinate
*/
CGLM_INLINE
vec3s
glms_project_z_no(vec3s v, mat4s m) {
return glm_project_z_no(v.raw, m.raw);
}
#endif /* cglms_project_rh_no_h */

20
include/cglm/struct/clipspace/project_zo.h
View File

@@ -43,6 +43,7 @@
* @param[in] pos point/position in viewport coordinates
* @param[in] invMat matrix (see brief)
* @param[in] vp viewport as [x, y, width, height]
*
* @returns unprojected coordinates
*/
CGLM_INLINE
@@ -63,6 +64,7 @@ glms_unprojecti_zo(vec3s pos, mat4s invMat, vec4s vp, vec3 dest) {
* @param[in] pos object coordinates
* @param[in] m MVP matrix
* @param[in] vp viewport as [x, y, width, height]
*
* @returns projected coordinates
*/
CGLM_INLINE
@@ -73,4 +75,22 @@ glms_project_zo(vec3s pos, mat4s m, vec4s vp, vec3 dest) {
return dest;
}
/*!
* @brief map object's z coordinate to window coordinates
*
* Computing MVP:
* glm_mat4_mul(proj, view, viewProj);
* glm_mat4_mul(viewProj, model, MVP);
*
* @param[in] v object coordinates
* @param[in] m MVP matrix
*
* @returns projected z coordinate
*/
CGLM_INLINE
vec3s
glms_project_z_zo(vec3s v, mat4s m) {
return glm_project_z_zo(v.raw, m.raw);
}
#endif /* cglm_project_zo_h */