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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#ifndef __SUBD_PATCH_H__
#define __SUBD_PATCH_H__
#include "util/boundbox.h"
#include "util/types.h"
CCL_NAMESPACE_BEGIN
class Patch {
public:
Patch() : patch_index(0), shader(0), from_ngon(false)
{
}
virtual ~Patch() = default;
virtual void eval(float3 *P, float3 *dPdu, float3 *dPdv, float3 *N, float u, float v) = 0;
int patch_index;
int shader;
bool from_ngon;
};
/* Linear Quad Patch */
class LinearQuadPatch : public Patch {
public:
float3 hull[4];
float3 normals[4];
void eval(float3 *P, float3 *dPdu, float3 *dPdv, float3 *N, float u, float v);
BoundBox bound();
};
/* Bicubic Patch */
class BicubicPatch : public Patch {
public:
float3 hull[16];
void eval(float3 *P, float3 *dPdu, float3 *dPdv, float3 *N, float u, float v);
BoundBox bound();
};
CCL_NAMESPACE_END
#endif /* __SUBD_PATCH_H__ */
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