Added perspective matrix

1 files changed, 26 insertions, 0 deletions

diff --git a/vendor/libftm/src/mat4/ftm_mat4init_frustum_sym.c b/vendor/libftm/src/mat4/ftm_mat4init_frustum_sym.c
new file mode 100644
index 0000000..2763765
--- /dev/null
+++ b/vendor/libftm/src/mat4/ftm_mat4init_frustum_sym.c
@@ -0,0 +1,26 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ftm_mat4init_frustum_sym.c                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: charles <charles.cabergs@gmail.com>        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/05/12 15:47:45 by charles           #+#    #+#             */
+/*   Updated: 2020/05/12 17:21:06 by charles          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libftm_mat4.h"
+
+t_ftmmat4	*ftm_mat4init_frustum_sym(t_ftmmat4 *mat4, t_ftmfrustum_sym *frustum)
+{
+	t_ftmfrustum	f;
+
+	f.right = frustum->width / 2;
+	f.left = -f.right;
+	f.top = frustum->height / 2;
+	f.bottom = -f.top;
+	f.near = frustum->near;
+	f.far = frustum->far;
+	return (ftm_mat4init_frustum(mat4, &f));
+}