VertexElementMap.cpp

/*

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modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
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 * Neither the name of the University of Oxford nor the names of its
   contributors may be used to endorse or promote products derived from this
   software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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*/


#include "VertexElementMap.hpp"


// Implementation


VertexElementMap::VertexElementMap(unsigned size)
{
    mMap.resize(size);
}

void VertexElementMap::Resize(unsigned size)
{
    mMap.resize(size);
}

void VertexElementMap::ResetToIdentity()
{
    for (unsigned oldIndex=0; oldIndex<mMap.size(); oldIndex++)
    {
        mMap[oldIndex] = oldIndex;
    }
}

void VertexElementMap::SetNewIndex(unsigned oldIndex, unsigned newIndex)
{
    mMap[oldIndex] = newIndex;
}

void VertexElementMap::SetDeleted(unsigned index)
{
    mMap[index] = UINT_MAX;
}

bool VertexElementMap::IsDeleted(unsigned index)
{
    return (mMap[index] == UINT_MAX);
}

unsigned VertexElementMap::GetNewIndex(unsigned oldIndex) const
{
    if (mMap[oldIndex] == UINT_MAX)
    {
        EXCEPTION("VertexElement has been deleted");
    }
    return (unsigned) mMap[oldIndex];
}

bool VertexElementMap::IsIdentityMap()
{
    for (unsigned i=0; i<mMap.size(); i++)
    {
        if (mMap[i] != i)
        {
            return false;
        }
    }
    return true;
}

unsigned VertexElementMap::Size()
{
    return mMap.size();
}