1 files changed, 108 insertions, 0 deletions
diff --git a/intern/cycles/subd/subd_patch.h b/intern/cycles/subd/subd_patch.h
new file mode 100644
index 00000000000..ac2317f4359
--- /dev/null
+++ b/intern/cycles/subd/subd_patch.h
@@ -0,0 +1,108 @@
+/*
+ * 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_PATCH_H__
+#define __SUBD_PATCH_H__
+
+#include "util_boundbox.h"
+#include "util_types.h"
+
+CCL_NAMESPACE_BEGIN
+
+class Mesh;
+
+/* Base */
+
+class Patch {
+public:
+	virtual ~Patch() {}
+	virtual void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v) = 0;
+	virtual bool is_triangle() = 0;
+	virtual BoundBox bound() = 0;
+};
+
+/* Linear Quad Patch */
+
+class LinearQuadPatch : public Patch {
+public:
+	float3 hull[4];
+
+	void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
+	bool is_triangle() { return false; }
+	BoundBox bound();
+};
+
+/* Linear Triangle Patch */
+
+class LinearTrianglePatch : public Patch {
+public:
+	float3 hull[3];
+
+	void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
+	bool is_triangle() { return true; }
+	BoundBox bound();
+};
+
+/* Bicubic Patch */
+
+class BicubicPatch : public Patch {
+public:
+	float3 hull[16];
+
+	void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
+	bool is_triangle() { return false; }
+	BoundBox bound();
+};
+
+/* Bicubic Patch with Tangent Fields */
+
+class BicubicTangentPatch : public Patch {
+public:
+	float3 hull[16];
+	float3 utan[12];
+	float3 vtan[12];
+
+	void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
+	bool is_triangle() { return false; }
+	BoundBox bound();
+};
+
+/* Gregory Patches */
+
+class GregoryQuadPatch : public Patch {
+public:
+	float3 hull[20];
+
+	void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
+	bool is_triangle() { return false; }
+	BoundBox bound();
+};
+
+class GregoryTrianglePatch : public Patch  {
+public:
+	float3 hull[20];
+
+	void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
+	bool is_triangle() { return true; }
+	BoundBox bound();
+};
+
+CCL_NAMESPACE_END
+
+#endif /* __SUBD_PATCH_H__ */
+