#include <stdexcept>
-#include <msp/gl/extensions/msp_legacy_features.h>
#include <msp/strings/format.h>
#include "light.h"
-#include "lightunit.h"
#include "matrix.h"
#include "misc.h"
#include "programdata.h"
attenuation[2] = 0;
}
-Light::~Light()
-{
- while(LightUnit *unit = LightUnit::find_unit(this))
- unbind_from(unit->get_index());
-}
-
-void Light::update_parameter(int mask, int index) const
-{
- if(index<0)
- {
- LightUnit *unit = LightUnit::find_unit(this);
- if(!unit)
- return;
-
- index = unit->get_index();
- }
-
- GLenum l = GL_LIGHT0+index;
- if(mask&DIFFUSE)
- glLightfv(l, GL_DIFFUSE, &diffuse.r);
- if(mask&SPECULAR)
- glLightfv(l, GL_SPECULAR, &specular.r);
- if(mask&POSITION)
- glLightfv(l, GL_POSITION, &position.x);
- if(mask&SPOT_DIR)
- glLightfv(l, GL_SPOT_DIRECTION, &spot_dir.x);
- if(mask&SPOT_EXP)
- glLightf(l, GL_SPOT_EXPONENT, spot_exp);
- if(mask&SPOT_CUTOFF)
- glLightf(l, GL_SPOT_CUTOFF, spot_cutoff.degrees());
- if(mask&ATTENUATION)
- {
- glLightf(l, GL_CONSTANT_ATTENUATION, attenuation[0]);
- glLightf(l, GL_LINEAR_ATTENUATION, attenuation[1]);
- glLightf(l, GL_QUADRATIC_ATTENUATION, attenuation[2]);
- }
-}
-
void Light::update_matrix()
{
Vector3 up_dir;
void Light::set_diffuse(const Color &c)
{
diffuse = c;
- update_parameter(DIFFUSE);
}
void Light::set_specular(const Color &c)
{
specular = c;
- update_parameter(SPECULAR);
}
void Light::set_matrix(const Matrix &m)
position = matrix.column(3);
spot_dir = normalize(-matrix.column(2).slice<3>(0));
direction = (position.w ? spot_dir : normalize(-position.slice<3>(0)));
- update_parameter(POSITION|SPOT_DIR);
update_matrix();
}
void Light::set_position(const Vector4 &p)
{
position = p;
- update_parameter(POSITION);
if(!position.w)
direction = normalize(-position.slice<3>(0));
update_matrix();
spot_dir = normalize(d);
if(position.w)
direction = spot_dir;
- update_parameter(SPOT_DIR);
update_matrix();
}
throw invalid_argument("Light::set_spot_exponent");
spot_exp = e;
- update_parameter(SPOT_EXP);
}
void Light::set_spot_cutoff(float c)
throw invalid_argument("Light::set_spot_cutoff");
spot_cutoff = c;
- update_parameter(SPOT_CUTOFF);
}
void Light::disable_spot_cutoff()
attenuation[0] = c;
attenuation[1] = l;
attenuation[2] = q;
- update_parameter(ATTENUATION);
}
void Light::update_shader_data(ProgramData &shdata, const Matrix &view_matrix, unsigned i) const
shdata.uniform(base+".specular", specular);
}
-void Light::bind_to(unsigned i) const
-{
- static Require _req(MSP_legacy_features);
-
- LightUnit &unit = LightUnit::get_unit(i);
- if(unit.set_light(this))
- {
- enable(GL_LIGHT0+unit.get_index());
- update_parameter(-1, unit.get_index());
- }
-}
-
-const Light *Light::current(unsigned i)
-{
- return LightUnit::get_unit(i).get_light();
-}
-
-void Light::unbind_from(unsigned i)
-{
- LightUnit &unit = LightUnit::get_unit(i);
- if(unit.set_light(0))
- disable(GL_LIGHT0+unit.get_index());
-}
-
Light::Loader::Loader(Light &l):
DataFile::ObjectLoader<Light>(l)