types.h

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//
//   Copyright 2015 Pixar
//
//   Licensed under the terms set forth in the LICENSE.txt file available at
//   https://opensubdiv.org/license.
//
 
#ifndef OPENSUBDIV3_OSD_TYPES_H
#define OPENSUBDIV3_OSD_TYPES_H
 
#include "../version.h"
#include "../far/patchTable.h"
 
#include <algorithm>
 
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
 
namespace Osd {
 
struct PatchCoord {
    // 5-ints struct.
 
    PatchCoord(Far::PatchTable::PatchHandle handleArg, float sArg, float tArg) :
        handle(handleArg), s(sArg), t(tArg) { }
 
    PatchCoord() : s(0), t(0) {
        handle.arrayIndex = 0;
        handle.patchIndex = 0;
        handle.vertIndex = 0;
    }
 
    Far::PatchTable::PatchHandle handle; 
    float s, t;              
};
 
struct PatchArray {
    // 4-ints struct.
    PatchArray(Far::PatchDescriptor desc_in,
               int numPatches_in, int indexBase_in, int primitiveIdBase_in) :
        regDesc(desc_in), desc(desc_in),
        numPatches(numPatches_in), indexBase(indexBase_in),
        stride(desc_in.GetNumControlVertices()),
        primitiveIdBase(primitiveIdBase_in) {}
 
    PatchArray(Far::PatchDescriptor regDesc_in, Far::PatchDescriptor irregDesc_in,
               int numPatches_in, int indexBase_in, int primitiveIdBase_in) :
        regDesc(regDesc_in), desc(irregDesc_in),
        numPatches(numPatches_in), indexBase(indexBase_in),
        stride(std::max(regDesc_in.GetNumControlVertices(),
                        irregDesc_in.GetNumControlVertices())),
        primitiveIdBase(primitiveIdBase_in) {}
 
    Far::PatchDescriptor const &GetDescriptor() const {
        return desc;
    }
    Far::PatchDescriptor const &GetDescriptorRegular() const {
        return regDesc;
    }
    Far::PatchDescriptor const &GetDescriptorIrregular() const {
        return desc;
    }
 
    int GetPatchType() const {
        return desc.GetType();
    }
    int GetPatchTypeRegular() const {
        return regDesc.GetType();
    }
    int GetPatchTypeIrregular() const {
        return desc.GetType();
    }
 
    int GetNumPatches() const {
        return numPatches;
    }
    int GetIndexBase() const {
        return indexBase;
    }
    int GetStride() const {
        return stride;
    }
    int GetPrimitiveIdBase() const {
        return primitiveIdBase;
    }
 
    // Separate regular and irregular patch descriptors for cases where the
    // array is mixed -- both will be equal if only a single type specified
    Far::PatchDescriptor regDesc;
    Far::PatchDescriptor desc;
 
    int numPatches;
    int indexBase;        // an offset within the index buffer
    int stride;           // stride in buffer between patches
    int primitiveIdBase;  // an offset within the patch param buffer
};
 
struct PatchParam : public Far::PatchParam {
    // int3 struct.
    float sharpness;
};
 
typedef std::vector<PatchArray> PatchArrayVector;
typedef std::vector<PatchParam> PatchParamVector;
 
}  // end namespace Osd
 
}  // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;
 
}  // end namespace OpenSubdiv
 
 
#endif  // OPENSUBDIV3_OSD_TYPES_H