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/*
* Modification History
*
* 2000-December-20 Jason Rohrer
* Created.
*/
#ifndef MULTI_LIGHTING_GL_INCLUDED
#define MULTI_LIGHTING_GL_INCLUDED
#include <stdio.h>
#include "LightingGL.h"
#include "minorGems/util/SimpleVector.h"
/**
* A LightingGL implementation that contains a collection of
* LightingGLs.
*
* @author Jason Rohrer
*/
class MultiLightingGL : public LightingGL {
public:
/**
* Constructs a MultiLighting.
*/
MultiLightingGL();
~MultiLightingGL();
/**
* Adds a lighting to this MultiLighting.
*
* @param inLighting lighting to add. Is not
* destroyed when the MultiLighting is destroyed.
*/
void addLighting( LightingGL *inLighting );
/**
* Removes a lighting to this MultiLighting.
*
* @param inLighting lighting to remove.
*/
void removeLighting( LightingGL *inLighting );
// implements LightingGL interface
void getLighting( Vector3D *inPoint, Vector3D *inNormal,
Color *outColor );
private:
SimpleVector<LightingGL*> *mLightingVector;
};
inline MultiLightingGL::MultiLightingGL()
: mLightingVector( new SimpleVector<LightingGL*>() ) {
}
inline MultiLightingGL::~MultiLightingGL() {
delete mLightingVector;
}
inline void MultiLightingGL::addLighting( LightingGL *inLighting ) {
mLightingVector->push_back( inLighting );
}
inline void MultiLightingGL::removeLighting( LightingGL *inLighting ) {
mLightingVector->deleteElement( inLighting );
}
inline void MultiLightingGL::getLighting( Vector3D *inPoint,
Vector3D *inNormal, Color *outColor ) {
int numLightings = mLightingVector->size();
outColor->r = 0;
outColor->g = 0;
outColor->b = 0;
// sum lighting contributions from each lighting
for( int i=0; i<numLightings; i++ ) {
Color *tempColor = new Color( 0, 0, 0 );
LightingGL *thisLighting = *( mLightingVector->getElement( i ) );
thisLighting->getLighting( inPoint, inNormal, tempColor );
outColor->r += tempColor->r;
outColor->g += tempColor->g;
outColor->b += tempColor->b;
delete tempColor;
}
// clip color components:
if( outColor->r > 1.0 ) {
outColor->r = 1.0;
}
if( outColor->g > 1.0 ) {
outColor->g = 1.0;
}
if( outColor->b > 1.0 ) {
outColor->b = 1.0;
}
}
#endif
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