1 files changed, 69 insertions, 0 deletions
diff --git a/source/blender/collada/collada_internal.h b/source/blender/collada/collada_internal.h
new file mode 100644
index 00000000000..c0d74505f72
--- /dev/null
+++ b/source/blender/collada/collada_internal.h
@@ -0,0 +1,69 @@
+#ifndef BLENDER_COLLADA_H
+#define BLENDER_COLLADA_H
+
+#include "COLLADAFWFileInfo.h"
+#include "Math/COLLADABUMathMatrix4.h"
+
+class UnitConverter
+{
+private:
+	COLLADAFW::FileInfo::Unit unit;
+	COLLADAFW::FileInfo::UpAxisType up_axis;
+
+public:
+
+	UnitConverter() : unit(), up_axis(COLLADAFW::FileInfo::Z_UP) {}
+
+	void read_asset(const COLLADAFW::FileInfo* asset)
+	{
+	}
+
+	// TODO
+	// convert vector vec from COLLADA format to Blender
+	void convertVec3(float *vec)
+	{
+	}
+		
+	// TODO need also for angle conversion, time conversion...
+
+	void mat4_from_dae(float out[][4], const COLLADABU::Math::Matrix4& in)
+	{
+		// in DAE, matrices use columns vectors, (see comments in COLLADABUMathMatrix4.h)
+		// so here, to make a blender matrix, we swap columns and rows
+		for (int i = 0; i < 4; i++) {
+			for (int j = 0; j < 4; j++) {
+				out[i][j] = in[j][i];
+			}
+		}
+	}
+
+	void mat4_to_dae(float out[][4], float in[][4])
+	{
+		Mat4CpyMat4(out, in);
+		Mat4Transp(out);
+	}
+
+	void mat4_to_dae_double(double out[][4], float in[][4])
+	{
+		float mat[4][4];
+
+		mat4_to_dae(mat, in);
+
+		for (int i = 0; i < 4; i++)
+			for (int j = 0; j < 4; j++)
+				out[i][j] = mat[i][j];
+	}
+};
+
+class TransformBase
+{
+public:
+	void decompose(float mat[][4], float *loc, float *rot, float *size)
+	{
+		Mat4ToSize(mat, size);
+		Mat4ToEul(mat, rot);
+		VecCopyf(loc, mat[3]);
+	}
+};
+
+#endif