1 files changed, 52 insertions, 0 deletions
diff --git a/debian/fireflies/fireflies-2.08/libgfx/src/symmat4.cxx b/debian/fireflies/fireflies-2.08/libgfx/src/symmat4.cxx
new file mode 100644
index 00000000..d8483017
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+++ b/debian/fireflies/fireflies-2.08/libgfx/src/symmat4.cxx
@@ -0,0 +1,52 @@
+/************************************************************************
+
+  4X4 Symmetric Matrix class
+  
+  $Id: symmat4.cxx 427 2004-09-27 04:45:31Z garland $
+
+ ************************************************************************/
+#include <gfx/symmat4.h>
+
+namespace gfx
+{
+
+SymMat4 SymMat4::I()
+{
+	SymMat4 A;
+	A(0,0) = A(1,1) = A(2,2) = A(3,3) = 1;
+	return A;
+}
+
+Mat4 SymMat4::fullmatrix() const
+{
+	Mat4 temp;
+	for (int i=0; i<4; i++)
+		for (int j=0; j<4; j++)
+			temp(i,j) = (*this) (i,j);
+	return temp;
+}
+
+SymMat4 SymMat4::outer_product(const Vec4& v)
+{
+	SymMat4 tmp;
+	for(int i=0; i<4; i++)
+		for(int j=0; j<4; j++)
+			tmp(i,j)=v[i]*v[j];
+	return tmp;
+}
+
+SymMat4 operator* (const SymMat4& n, const SymMat4& m)
+{
+	SymMat4 temp;
+	for (int i=0; i<4; i++)
+		for(int j=0; j<4; j++)
+			temp(i,j)=n.row(i) * m.col(j);
+	return temp;
+}
+
+double invert(Mat4& m_inv, const SymMat4& m)
+{
+    return invert(m_inv, m.fullmatrix());
+}
+
+} // namespace gfx