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Diffstat (limited to 'intern/cycles/subd/subd_build.h')
-rw-r--r-- | intern/cycles/subd/subd_build.h | 75 |
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__ */ + |