-#include "except.h"
+#include <stdexcept>
#include "light.h"
+#include "lightunit.h"
#include "misc.h"
using namespace std;
namespace GL {
Light::Light():
- ambient(0),
diffuse(1),
specular(1),
position(0, 0, 1, 0),
attenuation[2] = 0;
}
-void Light::set_ambient(const Color &c)
-{
- ambient = c;
-}
-
void Light::set_diffuse(const Color &c)
{
diffuse = c;
attenuation[2] = q;
}
-void Light::bind() const
+void Light::bind_to(unsigned i) const
{
- if(current_lights[current_unit]!=this)
+ LightUnit &unit = LightUnit::get_unit(i);
+ if(unit.set_light(this))
{
- GLenum l = GL_LIGHT0+current_unit;
+ GLenum l = GL_LIGHT0+unit.get_index();
enable(l);
- glLightfv(l, GL_AMBIENT, &ambient.r);
glLightfv(l, GL_DIFFUSE, &diffuse.r);
glLightfv(l, GL_SPECULAR, &specular.r);
glLightfv(l, GL_POSITION, &position.x);
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::bind_to(unsigned i) const
+const Light *Light::current(unsigned i)
{
- activate(i);
- bind();
-}
-
-void Light::activate(unsigned i)
-{
- static unsigned max_lights = get_i(GL_MAX_LIGHTS);
-
- if(i>=max_lights)
- throw InvalidParameterValue("Light unit index out of range");
-
- if(i>=current_lights.size())
- current_lights.resize(i+1);
-
- current_unit = i;
-}
-
-void Light::unbind()
-{
- if(current_lights[current_unit])
- {
- disable(GL_LIGHT0+current_unit);
- current_lights[current_unit] = 0;
- }
+ return LightUnit::get_unit(i).get_light();
}
void Light::unbind_from(unsigned i)
{
- activate(i);
- unbind();
+ LightUnit &unit = LightUnit::get_unit(i);
+ if(unit.set_light(0))
+ disable(GL_LIGHT0+unit.get_index());
}
-unsigned Light::current_unit = 0;
-vector<const Light *> Light::current_lights(1);
-
} // namespace GL
} // namespace Msp