forked from bartvdbraak/blender
da376e0237
Cycles uses code from some great open source projects, many thanks them: * BVH building and traversal code from NVidia's "Understanding the Efficiency of Ray Traversal on GPUs": http://code.google.com/p/understanding-the-efficiency-of-ray-traversal-on-gpus/ * Open Shading Language for a large part of the shading system: http://code.google.com/p/openshadinglanguage/ * Blender for procedural textures and a few other nodes. * Approximate Catmull Clark subdivision from NVidia Mesh tools: http://code.google.com/p/nvidia-mesh-tools/ * Sobol direction vectors from: http://web.maths.unsw.edu.au/~fkuo/sobol/ * Film response functions from: http://www.cs.columbia.edu/CAVE/software/softlib/dorf.php
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
/*
|
|
* 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__ */
|
|
|