2208303496
git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@15016 16af8721-9629-0410-8352-f15c8da7e697
117 lines
3.4 KiB
C++
117 lines
3.4 KiB
C++
/*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or (at
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* your option) any later version. The full license is in the LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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//
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// Copyright(c) 2008 Skew Matrix Software LLC.
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//
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#include "LightSourcePaletteManager.h"
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#include "DataOutputStream.h"
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#include "Opcodes.h"
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#include <osg/Notify>
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#include <osg/Light>
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#include <osg/Vec4f>
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#include <cassert>
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#include <sstream>
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#include <stdio.h>
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namespace flt
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{
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LightSourcePaletteManager::LightSourcePaletteManager()
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: _currIndex( -1 )
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{
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// TODO: Pay attention to the version here(?)
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}
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int LightSourcePaletteManager::add(osg::Light const* light)
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{
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int index = -1;
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if (light == NULL) return -1;
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// If this light has already been cached, set 'index' to the cached value
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LightPalette::const_iterator it = _lightPalette.find(light);
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if ( it != _lightPalette.end() )
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{
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index = it->second.Index;
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}
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// New light? Add it to the cache...
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else
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{
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index = ++_currIndex;
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_lightPalette.insert(std::make_pair(light,
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LightRecord(light, index) ) );
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}
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return index;
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}
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void
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LightSourcePaletteManager::write( DataOutputStream& dos ) const
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{
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using osg::Vec4f;
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static int const INFINITE_LIGHT = 0;
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static int const LOCAL_LIGHT = 1;
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static int const SPOT_LIGHT = 2;
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LightPalette::const_iterator it = _lightPalette.begin();
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for ( ; it != _lightPalette.end(); ++it)
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{
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LightRecord m = it->second;
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static char lightName[64];
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sprintf(lightName, "Light%02d", m.Light->getLightNum() );
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int lightType = INFINITE_LIGHT;
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Vec4f const& lightPos = m.Light->getPosition();
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if (lightPos.w() != 0)
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{
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if (m.Light->getSpotCutoff() < 180)
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lightType = SPOT_LIGHT;
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else
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lightType = LOCAL_LIGHT;
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}
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dos.writeInt16( (int16) LIGHT_SOURCE_PALETTE_OP );
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dos.writeInt16( 240 );
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dos.writeInt32( m.Index );
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dos.writeFill(2*4, '\0'); // Reserved
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dos.writeString( lightName, 20 );
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dos.writeFill(4, '\0'); // Reserved
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dos.writeVec4f(m.Light->getAmbient() );
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dos.writeVec4f(m.Light->getDiffuse() );
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dos.writeVec4f(m.Light->getSpecular() );
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dos.writeInt32(lightType);
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dos.writeFill(4*10, '\0'); // Reserved
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dos.writeFloat32(m.Light->getSpotExponent() );
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dos.writeFloat32(m.Light->getSpotCutoff() );
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dos.writeFloat32(0); // Yaw (N/A)
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dos.writeFloat32(0); // Pitch (N/A)
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dos.writeFloat32(m.Light->getConstantAttenuation() );
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dos.writeFloat32(m.Light->getLinearAttenuation() );
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dos.writeFloat32(m.Light->getQuadraticAttenuation() );
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dos.writeInt32(0); // Modeling flag (N/A)
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dos.writeFill(4*19, '\0'); // Reserved
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}
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}
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} // End namespace fltexp
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