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/***************************************************************************
Light.h - description
-------------------
begin : Sun Jan 30 2000
copyright : (C) 2000 by
email :
***************************************************************************/
#ifndef LIGHT_H
#define LIGHT_H
#define EM_IGNORE_ANGLE_HALF 1
#define EM_IGNORE_ANGLE_FULL 2
#define EM_IGNORE_DISTANCE 4
#define EM_USE_BOUNDS 8
#define EM_USE_SPECULAR 16
#define EM_USE_DIFFUSE 32
class Group;
#include "Node.h"
/** Example:
* <pre>
* Group* groupL = new group;
* Light* l = new Light(1.0, 10.0);
*
* groupL->setLight(l);
* engine->add(groupL);
*
* engine->addLight(l);
* </pre> */
class Light {
public:
/** Light(constant, linear, quadratic, r, g, b). */
Light(float c, float l, float q, float r=1.0, float g=1.0, float b=1.0);
~Light();
void setOn(bool on=true) { m_bOn = on;};
bool getOn() { return m_bOn;};
// TODO fast clamp
inline void setColor(float r, float g, float b) {
m_fR = EM_MAX(EM_MIN(1.0, r), 0.0);
m_fG = EM_MAX(EM_MIN(1.0, g), 0.0);
m_fB = EM_MAX(EM_MIN(1.0, b), 0.0);
};
void getColor(float & r, float & g, float & b) { r = m_fR; g = m_fG; b = m_fB; };
void setProperty(int);
void unsetProperty(int);
void setBounds(float b) { m_fBounds = b; };
void setIndex(int i);
inline Group * getParent() {
return p_Parent;
};
Vertex3D m_vtxSrc;
Vertex3D m_vtxTrans;
Vertex3D m_vtxAlign;
private:
friend class AmbientLightVisitor;
friend class TransformVisitor;
friend class Group;
void setParent(Group * p) {
p_Parent = p;
};
Group * p_Parent;
float m_fConstant;
float m_fLinear;
float m_fQuadratic;
float m_fR, m_fG, m_fB;
float m_fBounds;
bool m_bOn;
int m_iProperties;
};
#endif // LIGHT_H
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