109 lines
2.5 KiB
C++
109 lines
2.5 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __SUBD_PATCH_H__
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#define __SUBD_PATCH_H__
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#include "util_boundbox.h"
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#include "util_types.h"
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CCL_NAMESPACE_BEGIN
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class Mesh;
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/* Base */
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class Patch {
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public:
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virtual ~Patch() {}
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virtual void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v) = 0;
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virtual bool is_triangle() = 0;
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virtual BoundBox bound() = 0;
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};
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/* Linear Quad Patch */
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class LinearQuadPatch : public Patch {
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public:
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float3 hull[4];
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void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
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bool is_triangle() { return false; }
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BoundBox bound();
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};
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/* Linear Triangle Patch */
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class LinearTrianglePatch : public Patch {
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public:
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float3 hull[3];
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void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
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bool is_triangle() { return true; }
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BoundBox bound();
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};
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/* Bicubic Patch */
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class BicubicPatch : public Patch {
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public:
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float3 hull[16];
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void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
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bool is_triangle() { return false; }
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BoundBox bound();
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};
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/* Bicubic Patch with Tangent Fields */
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class BicubicTangentPatch : public Patch {
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public:
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float3 hull[16];
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float3 utan[12];
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float3 vtan[12];
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void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
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bool is_triangle() { return false; }
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BoundBox bound();
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};
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/* Gregory Patches */
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class GregoryQuadPatch : public Patch {
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public:
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float3 hull[20];
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void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
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bool is_triangle() { return false; }
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BoundBox bound();
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};
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class GregoryTrianglePatch : public Patch {
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public:
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float3 hull[20];
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void eval(float3 *P, float3 *dPdu, float3 *dPdv, float u, float v);
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bool is_triangle() { return true; }
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BoundBox bound();
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};
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CCL_NAMESPACE_END
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#endif /* __SUBD_PATCH_H__ */
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