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struct: add missing glms_project_z()

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Recep Aslantas
2023-12-31 13:46:51 +03:00
parent 5be1c2f059
commit 3b1d4fc546
1 changed files with 43 additions and 0 deletions
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43
include/cglm/struct/project.h
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@@ -15,6 +15,17 @@
#include "vec4.h"
#include "mat4.h"
#ifndef CGLM_CLIPSPACE_INCLUDE_ALL
# if CGLM_CONFIG_CLIP_CONTROL & CGLM_CLIP_CONTROL_ZO_BIT
# include "clipspace/project_zo.h"
# elif CGLM_CONFIG_CLIP_CONTROL & CGLM_CLIP_CONTROL_NO_BIT
# include "clipspace/project_no.h"
# endif
#else
# include "clipspace/project_zo.h"
# include "clipspace/project_no.h"
#endif
/*!
* @brief maps the specified viewport coordinates into specified space [1]
* the matrix should contain projection matrix.
@@ -68,6 +79,9 @@ glms_unprojecti(vec3s pos, mat4s invMat, vec4s vp) {
* glm_mat4_mul(proj, view, viewProj);
* glm_mat4_mul(viewProj, model, MVP);
*
* or in struct api:
* MVP = mat4_mul(mat4_mul(proj, view), model)
*
* @param[in] pos point/position in viewport coordinates
* @param[in] m matrix (see brief)
* @param[in] vp viewport as [x, y, width, height]
@@ -88,6 +102,9 @@ glms_unproject(vec3s pos, mat4s m, vec4s vp) {
* glm_mat4_mul(proj, view, viewProj);
* glm_mat4_mul(viewProj, model, MVP);
*
* or in struct api:
* MVP = mat4_mul(mat4_mul(proj, view), model)
*
* @param[in] pos object coordinates
* @param[in] m MVP matrix
* @param[in] vp viewport as [x, y, width, height]
@@ -101,6 +118,32 @@ glms_project(vec3s pos, mat4s m, vec4s vp) {
return r;
}
/*!
* @brief map object's z coordinate to window coordinates
*
* Computing MVP:
* glm_mat4_mul(proj, view, viewProj);
* glm_mat4_mul(viewProj, model, MVP);
*
* or in struct api:
* MVP = mat4_mul(mat4_mul(proj, view), model)
*
* @param[in] v object coordinates
* @param[in] m MVP matrix
*
* @returns projected z coordinate
*/
CGLM_INLINE
float
glms_project_z(vec3s v, mat4s m) {
return glm_project_z(v.raw, m.raw);
#if CGLM_CONFIG_CLIP_CONTROL & CGLM_CLIP_CONTROL_ZO_BIT
return glms_project_z_zo(v, m);
#elif CGLM_CONFIG_CLIP_CONTROL & CGLM_CLIP_CONTROL_NO_BIT
return glms_project_z_no(v, m);
#endif
}
/*!
* @brief define a picking region
*