50 lines
947 B
C++
50 lines
947 B
C++
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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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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Patch() : patch_index(0), shader(0), from_ngon(false) {}
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virtual ~Patch() = default;
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virtual void eval(float3 *P, float3 *dPdu, float3 *dPdv, float3 *N, float u, float v) = 0;
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int patch_index;
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int shader;
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bool from_ngon;
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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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float3 normals[4];
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void eval(float3 *P, float3 *dPdu, float3 *dPdv, float3 *N, float u, float v);
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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, float3 *N, float u, float v);
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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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