-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include "except.h"
+#include <stdexcept>
#include "light.h"
#include "misc.h"
namespace Msp {
namespace GL {
+unsigned Light::current_unit = 0;
+vector<const Light *> Light::current_lights(1);
+
Light::Light():
ambient(0),
diffuse(1),
specular(1),
- x(0), y(0), z(1), w(0),
- sdx(0), sdy(0), sdz(-1),
+ position(0, 0, 1, 0),
+ spot_dir(0, 0, -1),
spot_exp(0),
spot_cutoff(180)
-{ }
+{
+ attenuation[0] = 1;
+ attenuation[1] = 0;
+ attenuation[2] = 0;
+}
void Light::set_ambient(const Color &c)
{
- ambient=c;
+ ambient = c;
}
void Light::set_diffuse(const Color &c)
{
- diffuse=c;
+ diffuse = c;
}
void Light::set_specular(const Color &c)
{
- specular=c;
+ specular = c;
+}
+
+void Light::set_position(const Vector4 &p)
+{
+ position = p;
+}
+
+void Light::set_spot_direction(const Vector3 &d)
+{
+ spot_dir = d;
+}
+
+void Light::set_spot_exponent(float e)
+{
+ spot_exp = e;
}
-void Light::set_position(float x_, float y_, float z_, float w_)
+void Light::set_spot_cutoff(float c)
{
- x=x_;
- y=y_;
- z=z_;
- w=w_;
+ spot_cutoff = c;
+}
+
+void Light::set_attenuation(float c, float l, float q)
+{
+ attenuation[0] = c;
+ attenuation[1] = l;
+ attenuation[2] = q;
}
void Light::bind() const
{
if(current_lights[current_unit]!=this)
{
- GLenum l=GL_LIGHT0+current_unit;
+ GLenum l = GL_LIGHT0+current_unit;
enable(l);
glLightfv(l, GL_AMBIENT, &ambient.r);
glLightfv(l, GL_DIFFUSE, &diffuse.r);
glLightfv(l, GL_SPECULAR, &specular.r);
- glLightfv(l, GL_POSITION, &x);
- current_lights[current_unit]=this;
+ glLightfv(l, GL_POSITION, &position.x);
+ glLightfv(l, GL_SPOT_DIRECTION, &spot_dir.x);
+ glLightf(l, GL_SPOT_EXPONENT, spot_exp);
+ glLightf(l, GL_SPOT_CUTOFF, spot_cutoff);
+ glLightf(l, GL_CONSTANT_ATTENUATION, attenuation[0]);
+ glLightf(l, GL_LINEAR_ATTENUATION, attenuation[1]);
+ glLightf(l, GL_QUADRATIC_ATTENUATION, attenuation[2]);
+ current_lights[current_unit] = this;
}
}
void Light::activate(unsigned i)
{
- static unsigned max_lights=get_i(GL_MAX_LIGHTS);
+ static unsigned max_lights = get_i(GL_MAX_LIGHTS);
if(i>=max_lights)
- throw InvalidParameterValue("Light unit index out of range");
+ throw out_of_range("Light::activate");
if(i>=current_lights.size())
current_lights.resize(i+1);
- current_unit=i;
+ current_unit = i;
}
void Light::unbind()
if(current_lights[current_unit])
{
disable(GL_LIGHT0+current_unit);
- current_lights[current_unit]=0;
+ current_lights[current_unit] = 0;
}
}
-unsigned Light::current_unit=0;
-vector<const Light *> Light::current_lights(1);
+void Light::unbind_from(unsigned i)
+{
+ activate(i);
+ unbind();
+}
} // namespace GL
} // namespace Msp