80 lines
4.6 KiB
C++
80 lines
4.6 KiB
C++
/**************************************************************************************/
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/* */
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/* Visualization Library */
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/* http://visualizationlibrary.org */
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/* */
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/* Copyright (c) 2005-2020, Michele Bosi */
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/* All rights reserved. */
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/* */
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/* Redistribution and use in source and binary forms, with or without modification, */
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/* are permitted provided that the following conditions are met: */
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/* */
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/* - Redistributions of source code must retain the above copyright notice, this */
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/* list of conditions and the following disclaimer. */
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/* */
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/* - Redistributions in binary form must reproduce the above copyright notice, this */
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/* list of conditions and the following disclaimer in the documentation and/or */
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/* other materials provided with the distribution. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND */
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/* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED */
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/* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
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/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR */
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/* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
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/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */
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/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
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/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
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/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
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/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/**************************************************************************************/
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#ifndef DoubleVertexRemover_INCLUDE_ONCE
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#define DoubleVertexRemover_INCLUDE_ONCE
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#include <vlGraphics/Geometry.hpp>
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#include <vector>
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namespace vl
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{
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//-----------------------------------------------------------------------------
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// VertexMapper
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//-----------------------------------------------------------------------------
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//! Generates a set of new vertices from the old one.
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class VLGRAPHICS_EXPORT VertexMapper: public Object
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{
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VL_INSTRUMENT_CLASS(vl::VertexMapper, Object)
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public:
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//! Regenerates a new Array based on the given mapping.
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//! \param data The array to be regenerated
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//! \param map_new_to_old Specifies the mapping from the old vetices to the new one. The \p i-th vertex of the new vertex array will use the \p map_new_to_old[i]-th vertex of the old array,
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//! that is, \p map_new_to_old[i] specifies the \a old vertex to be used to generate the \a new \p i-th vertex.
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ref<ArrayAbstract> regenerate(ArrayAbstract* data, const std::vector<u32>& map_new_to_old) const;
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private:
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template<class T>
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ref<ArrayAbstract> regenerateT(ArrayAbstract* data, const std::vector<u32>& map_new_to_old) const;
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};
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//-----------------------------------------------------------------------------
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// DoubleVertexRemover
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//-----------------------------------------------------------------------------
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//! Removes from a Geometry the vertices with the same attributes.
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//! As a result also all the DrawArrays prensent in the Geometry are substituted with DrawElements.
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class VLGRAPHICS_EXPORT DoubleVertexRemover: public VertexMapper
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{
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VL_INSTRUMENT_CLASS(vl::DoubleVertexRemover, VertexMapper)
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public:
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DoubleVertexRemover() {}
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void removeDoubles(Geometry* geom);
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const std::vector<u32>& mapNewToOld() const { return mMapNewToOld; }
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const std::vector<u32>& mapOldToNew() const { return mMapOldToNew; }
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protected:
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std::vector<u32> mMapNewToOld;
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std::vector<u32> mMapOldToNew;
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};
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}
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#endif
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