Add LH & RH_NO perspective functions

This commit adds functions `glm_perspective_lh_no` and
`glm_perspective_rh_no` to the code. Unit tests are added and this
commit follows the new pattern of adding the a new file per
coordinate-system and clip-space tuple.

. Makefile.am updated
. removed test/glm_cmp project stub
. unit tests include naive implementations to as well as magic number
  ref-data generated by the corresponding GLM functions.

No tests run yet on Windows or Mac.

include/cglm/cam_lh_no.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+/*
+ Functions:
+   CGLM_INLINE void  glm_perspective_lh_no(float fovy,
+                                           float aspect,
+                                           float nearVal,
+                                           float farVal,
+                                           mat4  dest)
+ */
+
+#ifndef cglm_cam_lh_no_h
+#define cglm_cam_lh_no_h
+
+#include "common.h"
+#include "plane.h"
+
+/*!
+ * @brief set up perspective projection matrix with a left-hand coordinate
+ * system and a clip-space of [-1, 1]
+ *
+ * @param[in]  fovy    field of view angle
+ * @param[in]  aspect  aspect ratio ( width / height )
+ * @param[in]  nearVal near clipping plane
+ * @param[in]  farVal  far clipping planes
+ * @param[out] dest    result matrix
+ */
+CGLM_INLINE
+void
+glm_perspective_lh_no(float fovy,
+                      float aspect,
+                      float nearVal,
+                      float farVal,
+                      mat4  dest) {
+  /* Impl follows glm::perspectiveLH_NO in glm/ext/matrix_clip_space.inl */
+  float fl, fn;
+
+  glm_mat4_zero(dest);
+
+  fl = 1.0f / tanf(fovy * 0.5f);
+  fn = 1.0f / (farVal - nearVal);
+
+  dest[0][0] =  fl / aspect;
+  dest[1][1] =  fl;
+  dest[2][2] =  (farVal + nearVal) * fn;
+  dest[2][3] =  1.0f;
+  dest[3][2] = -2.0f * farVal * nearVal * fn;
+}
+
+#endif /*cglm_cam_lh_no_h*/

include/cglm/cam_lh_zo.h

@@ -20,7 +20,6 @@
 #include "common.h"
 #include "plane.h"
 
-
 /*!
  * @brief set up perspective projection matrix with a left-hand coordinate
  * system (suitable, apparently, for DirectX and Metal) and a clip-space with
@@ -47,11 +46,11 @@ glm_perspective_lh_zo(float fovy,
   fl = 1.0f / tanf(fovy * 0.5f);
   fn = 1.0f / (farVal - nearVal);
 
-  dest[0][0] = fl / aspect;
-  dest[1][1] = fl;
-  dest[2][2] = farVal * fn;
-  dest[2][3] = 1.0f;
-  dest[3][2] = -(farVal * nearVal * fn);
+  dest[0][0] =  fl / aspect;
+  dest[1][1] =  fl;
+  dest[2][2] =  farVal * fn;
+  dest[2][3] =  1.0f;
+  dest[3][2] = -farVal * nearVal * fn;
 }
 
 #endif /*cglm_cam_lh_zo_h*/

include/cglm/cam_rh_no.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+/*
+ Functions:
+   CGLM_INLINE void  glm_perspective_rh_no(float fovy,
+                                           float aspect,
+                                           float nearVal,
+                                           float farVal,
+                                           mat4  dest)
+ */
+
+#ifndef cglm_cam_rh_no_h
+#define cglm_cam_rh_no_h
+
+#include "common.h"
+#include "plane.h"
+
+/*!
+ * @brief set up perspective projection matrix with a right-hand coordinate
+ * system and a clip space of [-1, 1].
+ *
+ * @param[in]  fovy    field of view angle
+ * @param[in]  aspect  aspect ratio ( width / height )
+ * @param[in]  nearVal near clipping plane
+ * @param[in]  farVal  far clipping planes
+ * @param[out] dest    result matrix
+ */
+CGLM_INLINE
+void
+glm_perspective_rh_no(float fovy,
+                      float aspect,
+                      float nearVal,
+                      float farVal,
+                      mat4  dest) {
+  /* Impl follows glm::perspectiveRH_NO in glm/ext/matrix_clip_space.inl */
+  float fl, fn;
+
+  glm_mat4_zero(dest);
+
+  fl = 1.0f / tanf(fovy * 0.5f);
+  fn = 1.0f / (farVal - nearVal);
+
+  dest[0][0] =  fl / aspect;
+  dest[1][1] =  fl;
+  dest[2][2] = -(farVal + nearVal) * fn;
+  dest[2][3] = -1.0f;
+  dest[3][2] = -2.0f * farVal * nearVal * fn;
+}
+
+#endif /*cglm_cam_rh_no_h*/

include/cglm/cam_rh_zo.h

@@ -25,8 +25,6 @@
  * system (suitable for Vulkan) and a clip-space with depth values from zero
  * to one.
  *
- * https://github.com/godlikepanos/anki-3d-engine/blob/317cb379ff3a7b09f9034f49c7bdab0f96a1c0b3/AnKi/Math/Mat.h#L1254
- *
  * @param[in]  fovy    field of view angle
  * @param[in]  aspect  aspect ratio ( width / height )
  * @param[in]  nearVal near clipping plane
@@ -48,11 +46,11 @@ glm_perspective_rh_zo(float fovy,
   fl = 1.0f / tanf(fovy * 0.5f);
   fn = 1.0f / (farVal - nearVal);
 
-  dest[0][0] = fl / aspect;
-  dest[1][1] = fl;
+  dest[0][0] =  fl / aspect;
+  dest[1][1] =  fl;
   dest[2][2] = -farVal * fn;
   dest[2][3] = -1.0f;
   dest[3][2] = -farVal * nearVal * fn;
 }
 
-#endif /*cglm_cam_lh_zo_h*/
+#endif /*cglm_cam_rh_zo_h*/

include/cglm/cglm.h

@@ -19,6 +19,8 @@
 #include "cam.h"
 #include "cam_lh_zo.h"
 #include "cam_rh_zo.h"
+#include "cam_lh_no.h"
+#include "cam_rh_no.h"
 #include "frustum.h"
 #include "quat.h"
 #include "euler.h"