Standard vertex components for tangent and binormal vectors

[libs/gl.git] / source / vertexbuilder.h

diff --git a/source/vertexbuilder.h b/source/vertexbuilder.h
index 764fef500ab0108eae10a10b815eac5be6a06598..7a1c943c9ed18b7f6f2330cdc67b0ebb76bc4197 100644 (file)
--- a/source/vertexbuilder.h
+++ b/source/vertexbuilder.h
@@ -1,10 +1,3 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007, 2009-2010  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
 #ifndef MSP_GL_VERTEXBUILDER_H_
 #define MSP_GL_VERTEXBUILDER_H_
 
@@ -12,6 +5,7 @@ Distributed under the LGPL
 #include "color.h"
 #include "matrix.h"
 #include "vector.h"
+#include "vertexformat.h"
 
 namespace Msp {
 namespace GL {
@@ -67,6 +61,24 @@ public:
                nor = Vector3(tn.x, tn.y, tn.z);
        }
 
+       void tangent(float x, float y, float z)
+       { tangent(Vector3(x, y, z)); }
+
+       void tangent(const Vector3 &t)
+       {
+               Vector4 tt = mtx.top()*Vector4(t.x, t.y, t.z, 0);
+               attrib(get_component_type(TANGENT3), tt);
+       }
+
+       void binormal(float x, float y, float z)
+       { binormal(Vector3(x, y, z)); }
+
+       void binormal(const Vector3 &b)
+       {
+               Vector4 tb = mtx.top()*Vector4(b.x, b.y, b.z, 0);
+               attrib(get_component_type(BINORMAL3), tb);
+       }
+
        void texcoord(float s)
        { texcoord(s, 0, 0, 1); }