From 3d34f2708875180e022a6fa72f0d231b1d747b75 Mon Sep 17 00:00:00 2001
From: Recep Aslantas <info@recp.me>
Date: Mon, 12 Sep 2016 10:49:44 +0300
Subject: [PATCH] rotate around single axis

---
 include/cglm-affine.h | 54 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/include/cglm-affine.h b/include/cglm-affine.h
index c612878..6016615 100644
--- a/include/cglm-affine.h
+++ b/include/cglm-affine.h
@@ -98,4 +98,58 @@ glm_scale1_self(mat4 m, float s) {
   m[2][2] *= s;
 }
 
+CGLM_INLINE
+void
+glm_rotate_x(mat4 m, float rad, mat4 dest) {
+  float cosVal;
+  float sinVal;
+  mat4  t = GLM_MAT_IDENTITY_4F;
+
+  cosVal = cos(rad);
+  sinVal = sin(rad);
+
+  t[1][1] =  cosVal;
+  t[1][2] =  sinVal;
+  t[2][1] = -sinVal;
+  t[2][2] =  cosVal;
+
+  glm_mat_mul4(t, m, dest);
+}
+
+CGLM_INLINE
+void
+glm_rotate_y(mat4 m, float rad, mat4 dest) {
+  float cosVal;
+  float sinVal;
+  mat4  t = GLM_MAT_IDENTITY_4F;
+
+  cosVal = cos(rad);
+  sinVal = sin(rad);
+
+  t[0][0] =  cosVal;
+  t[0][2] = -sinVal;
+  t[2][0] =  sinVal;
+  t[2][2] =  cosVal;
+
+  glm_mat_mul4(t, m, dest);
+}
+
+CGLM_INLINE
+void
+glm_rotate_z(mat4 m, float rad, mat4 dest) {
+  float cosVal;
+  float sinVal;
+  mat4  t = GLM_MAT_IDENTITY_4F;
+
+  cosVal = cos(rad);
+  sinVal = sin(rad);
+
+  t[0][0] =  cosVal;
+  t[0][1] =  sinVal;
+  t[1][0] = -sinVal;
+  t[1][1] =  cosVal;
+
+  glm_mat_mul4(t, m, dest);
+}
+
 #endif /* cglm_affine_h */