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Diffstat (limited to 'intern/cycles/subd/subd_patch.h')
-rw-r--r-- | intern/cycles/subd/subd_patch.h | 107 |
1 files changed, 107 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..8d4b8a1c911 --- /dev/null +++ b/intern/cycles/subd/subd_patch.h @@ -0,0 +1,107 @@ +/* + * 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 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__ */ + |