SkinWeightsToVertColsPrimFunc.cpp

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// Copyright (C) 2005 Dave Griffiths
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#include "SkinWeightsToVertColsPrimFunc.h"
#include "Primitive.h"
#include "SceneGraph.h"

using namespace Fluxus;

SkinWeightsToVertColsPrimFunc::SkinWeightsToVertColsPrimFunc()
{
}

SkinWeightsToVertColsPrimFunc::~SkinWeightsToVertColsPrimFunc()
{
}

void SkinWeightsToVertColsPrimFunc::Run(Primitive &prim, const SceneGraph &world)
{
    // find out how many sets of weights there are
    bool found=true;
    unsigned int numbones=0;
    unsigned int size=0;
    char wname[256];
    char type=0;
    
    while(found)
    {
        snprintf(wname,256,"w%d",numbones);
        found=prim.GetDataInfo(wname, type, size);
        if (found) numbones++;
    }
    
    // make some random colours
    vector<dColour> colours;
    for (unsigned int bone=0; bone<numbones; bone++)
    {
        colours.push_back(dColour(RandFloat(),RandFloat(),RandFloat()));
    }
    
    // get pointers to all the weights
    vector<vector<float>*> weights;
    for (unsigned int bone=0; bone<numbones; bone++)
    {
        snprintf(wname,256,"w%d",bone);
        weights.push_back(prim.GetDataVec<float>(wname));
    }
    
    for (unsigned int n=0; n<prim.Size(); n++)
    {
        dColour col;
        for (unsigned int bone=0; bone<numbones; bone++)
        {
            col+=colours[bone]*(*weights[bone])[n];
        }
        prim.SetData("c", n, col);
    }
    
}

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