+++ /dev/null
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include "except.h"
-#include "light.h"
-#include "misc.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-Light::Light():
- ambient(0),
- diffuse(1),
- specular(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;
-}
-
-void Light::set_diffuse(const Color &c)
-{
- diffuse = c;
-}
-
-void Light::set_specular(const Color &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_spot_cutoff(float c)
-{
- 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;
- 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);
- 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::bind_to(unsigned i) const
-{
- 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;
- }
-}
-
-void Light::unbind_from(unsigned i)
-{
- activate(i);
- unbind();
-}
-
-unsigned Light::current_unit = 0;
-vector<const Light *> Light::current_lights(1);
-
-} // namespace GL
-} // namespace Msp