Merge with trunk r41701soc-2011-carrot

1 files changed, 75 insertions, 0 deletions

diff --git a/intern/cycles/subd/subd_build.h b/intern/cycles/subd/subd_build.h
new file mode 100644
index 00000000000..e93ffc4a2c4
--- /dev/null
+++ b/intern/cycles/subd/subd_build.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2011, Blender Foundation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __SUBD_BUILD_H__
+#define __SUBD_BUILD_H__
+
+CCL_NAMESPACE_BEGIN
+
+class SubdFace;
+class SubdFaceRing;
+class SubdVert;
+class GregoryAccStencil;
+class Patch;
+class StencilMask;
+
+/* Builder */
+
+class SubdBuilder
+{
+public:
+	virtual ~SubdBuilder() {};
+	virtual Patch *run(SubdFace *face) = 0;
+	static SubdBuilder *create(bool linear);
+};
+
+/* Approximate Catmull Clark using Loop's approximation */
+
+class SubdAccBuilder : public SubdBuilder
+{
+public:
+	SubdAccBuilder();
+	~SubdAccBuilder();
+
+	Patch *run(SubdFace *face);
+
+protected:
+	/* Gregory Patch */
+	void computeCornerStencil(SubdFaceRing *ring, GregoryAccStencil *stencil);
+	void computeEdgeStencil(SubdFaceRing *ring, GregoryAccStencil *stencil);
+	void computeInteriorStencil(SubdFaceRing *ring, GregoryAccStencil *stencil);
+	void computeBoundaryTangentStencils(SubdFaceRing *ring,
+		SubdVert *vert,
+		StencilMask & r0, StencilMask & r1);
+};
+
+/* Linear Subdivision */
+
+class SubdLinearBuilder : public SubdBuilder
+{
+public:
+	SubdLinearBuilder();
+	~SubdLinearBuilder();
+
+	Patch *run(SubdFace *face);
+};
+
+CCL_NAMESPACE_END
+
+#endif /* __SUBD_BUILD_H__ */
+