-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#ifndef MSP_GL_LIGHT_H_
#define MSP_GL_LIGHT_H_
+#include <vector>
#include "color.h"
+#include "vector.h"
namespace Msp {
namespace GL {
+class Matrix;
+class ProgramData;
+
class Light
{
private:
- Color ambient;
+ enum ParameterMask
+ {
+ DIFFUSE = 1,
+ SPECULAR = 2,
+ POSITION = 4,
+ SPOT_DIR = 8,
+ SPOT_EXP = 16,
+ SPOT_CUTOFF = 32,
+ ATTENUATION = 64
+ };
+
Color diffuse;
Color specular;
- float x, y, z, w;
- float sdx, sdy, sdz;
+ Vector4 position;
+ Vector3 spot_dir;
float spot_exp;
float spot_cutoff;
float attenuation[3];
- static unsigned current;
-
public:
Light();
- void set_ambient(const Color &c);
+
+private:
+ void update_parameter(int, int = -1) const;
+
+public:
void set_diffuse(const Color &c);
void set_specular(const Color &c);
- void set_position(float, float, float, float);
- void apply();
- void apply_to(unsigned);
+ const Color &get_diffuse() const { return diffuse; }
+ const Color &get_specular() const { return specular; }
+
+ void set_position(const Vector4 &);
+ const Vector4 &get_position() const { return position; }
+ void set_spot_direction(const Vector3 &);
+ void set_spot_exponent(float);
+ void set_spot_cutoff(float);
+ const Vector3 &get_spot_direction() const { return spot_dir; }
+ float get_spot_exponent() const { return spot_exp; }
+ float get_spot_cutoff() const { return spot_cutoff; }
+ void set_attenuation(float, float, float);
+ const float *get_attenuation() const { return attenuation; }
+
+ void update_shader_data(ProgramData &, const Matrix &, unsigned) const;
+ void bind() const { return bind_to(0); }
+ void bind_to(unsigned) const;
- static void activate(unsigned);
+ static const Light *current(unsigned = 0);
+ static void unbind() { return unbind_from(0); }
+ static void unbind_from(unsigned);
};
} // namespace GL