stencilTablesFactory.h

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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 FAR_STENCILTABLE_FACTORY_H
#define FAR_STENCILTABLE_FACTORY_H

#include "../version.h"

#include "../far/kernelBatch.h"

namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {

namespace Far {

class Stencil;
class StencilTables;
class TopologyRefiner;

//        XXXX manuelk remap table creation not implemented yet !
//
class StencilTablesFactory {

public:

    enum Mode {
        INTERPOLATE_VERTEX=0,
        INTERPOLATE_VARYING
    };

    struct Options {
    
        Options() : interpolationMode(INTERPOLATE_VERTEX),
                    generateOffsets(false),    
                    generateAllLevels(true),   
                    sortBySize(false) { }
    
        int interpolationMode : 2, 
            generateOffsets   : 1, 
            generateAllLevels : 1, 
            sortBySize        : 1; 
    };

    static StencilTables const * Create(TopologyRefiner const & refiner,
        Options options = Options());

    static KernelBatch Create(StencilTables const &stencilTables);

private:

    // Copy a stencil into StencilTables
    template <class T> static void copyStencil(T const & src, Stencil & dst);

    // (Sort &) Copy a vector of stencils into StencilTables
    template <class T> static void copyStencils(std::vector<T> & src,
        Stencil & dst, bool sortBySize);
        
    std::vector<int> _remap;
};


} // end namespace Far

} // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;

} // end namespace OpenSubdiv

#endif // FAR_STENCILTABLE_FACTORY_H