Added perspective matrix

1 files changed, 26 insertions, 1 deletions

diff --git a/vendor/libftm/inc/libftm_mat4.h b/vendor/libftm/inc/libftm_mat4.h
index f69d7e6..5fc183b 100644
--- a/vendor/libftm/inc/libftm_mat4.h
+++ b/vendor/libftm/inc/libftm_mat4.h
@@ -6,7 +6,7 @@
 /*   By: charles <charles.cabergs@gmail.com>        +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2020/05/12 11:04:59 by charles           #+#    #+#             */
-/*   Updated: 2020/05/12 13:53:40 by charles          ###   ########.fr       */
+/*   Updated: 2020/05/12 17:21:34 by charles          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -22,8 +22,33 @@ typedef struct
 	float	m[4 * 4];
 }			t_ftmmat4;
 
+/*
+** http://www.songho.ca/opengl/gl_projectionmatrix.html
+*/
+
+typedef struct
+{
+	float	near;
+	float	far;
+	float	left;
+	float	right;
+	float	top;
+	float	bottom;
+}			t_ftmfrustum;
+
+typedef struct
+{
+	float	near;
+	float	far;
+	float	width;
+	float	height;
+}			t_ftmfrustum_sym;
+
 t_ftmmat4	*ftm_mat4init_eye(t_ftmmat4 *mat4, float x);
 t_ftmmat4	*ftm_mat4init_fill(t_ftmmat4 *mat4, float x);
+t_ftmmat4	*ftm_mat4init_frustum(t_ftmmat4 *mat4, t_ftmfrustum *frustum);
+t_ftmmat4	*ftm_mat4init_frustum_sym(t_ftmmat4 *mat4, t_ftmfrustum_sym *frustum);
+t_ftmmat4	*ftm_mat4init_perspective(t_ftmmat4 *mat4, float fov, float aspect_ratio, float near, float far);
 t_ftmmat4	*ftm_mat4translate(t_ftmmat4 *mat4, float x, float y, float z);
 t_ftmmat4	*ftm_mat4rotate(t_ftmmat4 *mat4, float radian, t_ftmvec3 *axis);
 t_ftmmat4	*ftm_mat4scale(t_ftmmat4 *mat4, float x, float y, float z);