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UnrealEngine/Engine/Source/ThirdParty/OpenSubdiv/OpenSubdiv-3.6.0/opensubdiv/hbr/vertexEdit.h
2025-05-18 13:04:45 +08:00

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//
// Copyright 2013 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
// names, trademarks, service marks, or product names of the Licensor
// and its affiliates, except as required to comply with Section 4(c) of
// the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef OPENSUBDIV3_HBRVERTEXEDIT_H
#define OPENSUBDIV3_HBRVERTEXEDIT_H
#include <algorithm>
#include "../hbr/hierarchicalEdit.h"
#include "../version.h"
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
template <class T> class HbrVertexEdit;
template <class T>
std::ostream& operator<<(std::ostream& out, const HbrVertexEdit<T>& path) {
out << "vertex path = (" << path.faceid << ' ';
for (int i = 0; i < path.nsubfaces; ++i) {
out << static_cast<int>(path.subfaces[i]) << ' ';
}
return out << static_cast<int>(path.vertexid) << "), edit = (" << path.edit[0] << ',' << path.edit[1] << ',' << path.edit[2] << ')';
}
template <class T>
class HbrVertexEdit : public HbrHierarchicalEdit<T> {
public:
HbrVertexEdit(int _faceid, int _nsubfaces, unsigned char *_subfaces, unsigned char _vertexid, int _index, int _width, bool _isP, typename HbrHierarchicalEdit<T>::Operation _op, float *_edit)
: HbrHierarchicalEdit<T>(_faceid, _nsubfaces, _subfaces), vertexid(_vertexid), index(_index), width(_width), isP(_isP), op(_op) {
edit = new float[width];
memcpy(edit, _edit, width * sizeof(float));
}
HbrVertexEdit(int _faceid, int _nsubfaces, int *_subfaces, int _vertexid, int _index, int _width, bool _isP, typename HbrHierarchicalEdit<T>::Operation _op, float *_edit)
: HbrHierarchicalEdit<T>(_faceid, _nsubfaces, _subfaces), vertexid(static_cast<unsigned char>(_vertexid)), index(_index), width(_width), isP(_isP), op(_op) {
edit = new float[width];
memcpy(edit, _edit, width * sizeof(float));
}
virtual ~HbrVertexEdit() {
delete[] edit;
}
// Return the vertex id (the last element in the path)
unsigned char GetVertexID() const { return vertexid; }
friend std::ostream& operator<< <T> (std::ostream& out, const HbrVertexEdit<T>& path);
// Return index of variable this edit applies to
int GetIndex() const { return index; }
// Return width of the variable
int GetWidth() const { return width; }
// Get the numerical value of the edit
const float* GetEdit() const { return edit; }
// Get the type of operation
typename HbrHierarchicalEdit<T>::Operation GetOperation() const { return op; }
virtual void ApplyEditToFace(HbrFace<T>* face) {
if (HbrHierarchicalEdit<T>::GetNSubfaces() == face->GetDepth()) {
// Tags the vertex as being edited; it'll figure out what to
// when GuaranteeNeighbor is called
face->GetVertex(vertexid)->SetVertexEdit();
}
// In any event, mark the face as having a vertex edit (which
// may only be applied on subfaces)
face->MarkVertexEdits();
}
virtual void ApplyEditToVertex(HbrFace<T>* face, HbrVertex<T>* vertex) {
if (HbrHierarchicalEdit<T>::GetNSubfaces() == face->GetDepth() &&
face->GetVertex(vertexid) == vertex) {
vertex->GetData().ApplyVertexEdit(*const_cast<const HbrVertexEdit<T>*>(this));
}
}
#ifdef PRMAN
virtual void ApplyToBound(struct bbox& bbox, RtMatrix *mx) const {
if (isP) {
struct xyz p = *(struct xyz*)edit;
if (mx)
MxTransformByMatrix(&p, &p, *mx, 1);
if (op == HbrHierarchicalEdit<T>::Set) {
bbox.min.x = std::min(bbox.min.x, p.x);
bbox.min.y = std::min(bbox.min.y, p.y);
bbox.min.z = std::min(bbox.min.z, p.z);
bbox.max.x = std::max(bbox.max.x, p.x);
bbox.max.y = std::max(bbox.max.y, p.y);
bbox.max.z = std::max(bbox.max.z, p.z);
} else if (op == HbrHierarchicalEdit<T>::Add ||
op == HbrHierarchicalEdit<T>::Subtract) {
bbox.min.x -= fabsf(p.x);
bbox.min.y -= fabsf(p.y);
bbox.min.z -= fabsf(p.z);
bbox.max.x += fabsf(p.x);
bbox.max.y += fabsf(p.y);
bbox.max.z += fabsf(p.z);
}
}
}
#endif
private:
const unsigned char vertexid;
int index;
int width;
unsigned isP:1;
typename HbrHierarchicalEdit<T>::Operation op;
float* edit;
};
template <class T>
class HbrMovingVertexEdit : public HbrHierarchicalEdit<T> {
public:
HbrMovingVertexEdit(int _faceid, int _nsubfaces, unsigned char *_subfaces, unsigned char _vertexid, int _index, int _width, bool _isP, typename HbrHierarchicalEdit<T>::Operation _op, float *_edit)
: HbrHierarchicalEdit<T>(_faceid, _nsubfaces, _subfaces), vertexid(_vertexid), index(_index), width(_width), isP(_isP), op(_op) {
edit = new float[width * 2];
memcpy(edit, _edit, 2 * width * sizeof(float));
}
HbrMovingVertexEdit(int _faceid, int _nsubfaces, int *_subfaces, int _vertexid, int _index, int _width, bool _isP, typename HbrHierarchicalEdit<T>::Operation _op, float *_edit)
: HbrHierarchicalEdit<T>(_faceid, _nsubfaces, _subfaces), vertexid(_vertexid), index(_index), width(_width), isP(_isP), op(_op) {
edit = new float[width * 2];
memcpy(edit, _edit, 2 * width * sizeof(float));
}
virtual ~HbrMovingVertexEdit() {
delete[] edit;
}
// Return the vertex id (the last element in the path)
unsigned char GetVertexID() const { return vertexid; }
friend std::ostream& operator<< <T> (std::ostream& out, const HbrVertexEdit<T>& path);
// Return index of variable this edit applies to
int GetIndex() const { return index; }
// Return width of the variable
int GetWidth() const { return width; }
// Get the numerical value of the edit
const float* GetEdit() const { return edit; }
// Get the type of operation
typename HbrHierarchicalEdit<T>::Operation GetOperation() const { return op; }
virtual void ApplyEditToFace(HbrFace<T>* face) {
if (HbrHierarchicalEdit<T>::GetNSubfaces() == face->GetDepth()) {
// Tags the vertex as being edited; it'll figure out what to
// when GuaranteeNeighbor is called
face->GetVertex(vertexid)->SetVertexEdit();
}
// In any event, mark the face as having a vertex edit (which
// may only be applied on subfaces)
face->MarkVertexEdits();
}
virtual void ApplyEditToVertex(HbrFace<T>* face, HbrVertex<T>* vertex) {
if (HbrHierarchicalEdit<T>::GetNSubfaces() == face->GetDepth() &&
face->GetVertex(vertexid) == vertex) {
vertex->GetData().ApplyMovingVertexEdit(*const_cast<const HbrMovingVertexEdit<T>*>(this));
}
}
#ifdef PRMAN
virtual void ApplyToBound(struct bbox& bbox, RtMatrix *mx) const {
if (isP) {
struct xyz p1 = *(struct xyz*)edit;
struct xyz p2 = *(struct xyz*)&edit[3];
if (mx) {
MxTransformByMatrix(&p1, &p1, *mx, 1);
MxTransformByMatrix(&p2, &p2, *mx, 1);
}
if (op == HbrVertexEdit<T>::Set) {
bbox.min.x = std::min(std::min(bbox.min.x, p1.x), p2.x);
bbox.min.y = std::min(std::min(bbox.min.y, p1.y), p2.y);
bbox.min.z = std::min(std::min(bbox.min.z, p1.z), p2.z);
bbox.max.x = std::max(std::max(bbox.max.x, p1.x), p2.x);
bbox.max.y = std::max(std::max(bbox.max.y, p1.y), p2.y);
bbox.max.z = std::max(std::max(bbox.max.z, p1.z), p2.z);
} else if (op == HbrVertexEdit<T>::Add ||
op == HbrVertexEdit<T>::Subtract) {
float maxx = std::max(fabsf(p1.x), fabsf(p2.x));
float maxy = std::max(fabsf(p1.y), fabsf(p2.y));
float maxz = std::max(fabsf(p1.z), fabsf(p2.z));
bbox.min.x -= maxx;
bbox.min.y -= maxy;
bbox.min.z -= maxz;
bbox.max.x += maxx;
bbox.max.y += maxy;
bbox.max.z += maxz;
}
}
}
#endif
private:
const unsigned char vertexid;
int index;
int width;
unsigned isP:1;
typename HbrHierarchicalEdit<T>::Operation op;
float* edit;
};
} // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;
} // end namespace OpenSubdiv
#endif /* OPENSUBDIV3_HBRVERTEXEDIT_H */