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/*
* Copyright 2006, NVIDIA Corporation Ignacio Castano <icastano@nvidia.com>
*
* Modifications copyright (c) 2011, Blender Foundation.
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef __SUBD_FACE_RING_H__
#define __SUBD_FACE_RING_H__
CCL_NAMESPACE_BEGIN
class StencilMask;
class SubdVert;
class SubdEdge;
class SubdFace;
class SubdFaceRing
{
public:
SubdFaceRing(SubdFace *face, SubdEdge *edge);
SubdFace *face() { return m_face; }
SubdEdge *firstEdge() { return m_firstEdge; }
int num_verts();
SubdVert *vertexAt(int i);
int vert_index(SubdVert *vertex);
void evaluate_stencils(float3 *P, StencilMask *mask, int num);
bool is_triangle();
bool is_quad();
int num_edges();
static bool is_regular(SubdFace *face);
static bool is_triangle(SubdFace *face);
static bool is_quad(SubdFace *face);
static bool is_boundary(SubdFace *face);
protected:
void initVerts();
void add_vert(SubdVert *vertex);
bool has_vert(SubdVert *vertex);
protected:
SubdFace *m_face;
SubdEdge *m_firstEdge;
int m_num_edges;
vector<SubdVert*> m_verts;
};
CCL_NAMESPACE_END
#endif /* __SUBD_FACE_RING_H__ */
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