1 files changed, 20 insertions, 0 deletions
diff --git a/res/effectlib/rotationTranslationScale.glsllib b/res/effectlib/rotationTranslationScale.glsllib
new file mode 100644
index 0000000..defbb1c
--- /dev/null
+++ b/res/effectlib/rotationTranslationScale.glsllib
@@ -0,0 +1,20 @@
+#ifndef ROTATION_TRANSLATION_SCALE_GLSLLIB
+#define ROTATION_TRANSLATION_SCALE_GLSLLIB
+
+mat4 rotationTranslationScale( in vec3 rotation, in vec3 translation, in vec3 scaling )
+{
+  mat4 st = mat4( scaling.x, 0.0f, 0.0f, 0.0f
+                , 0.0f, scaling.y, 0.0f, 0.0f
+                , 0.0f, 0.0f, scaling.z, 0.0f
+                , translation.x - 0.5f, translation.y - 0.5f, translation.z - 0.5f, 1.0f );
+  vec3 s = sin( rotation );
+  vec3 c = cos( rotation );
+  mat4 r = mat4( c.y * c.z, -c.x * s.z + s.x * s.y * c.z,  s.x * s.z + c.x * s.y * c.z, 0.0f
+               , c.y * s.z,  c.x * c.z + s.x * s.y * s.z, -s.x * c.z + c.x * s.y * s.z, 0.0f
+               , -s.y     ,  s.x * c.y                  ,  c.x * c.y                  , 0.0f
+               , 0.5f     ,  0.5f                       ,  0.5f                       , 1.0f );
+  return( st * r );
+}
+
+
+#endif