forked from bartvdbraak/blender
71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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 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() { return false; }
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virtual BoundBox bound() = 0;
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virtual int ptex_face_id() { return -1; }
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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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CCL_NAMESPACE_END
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#endif /* __SUBD_PATCH_H__ */
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