#include <stdexcept>
#include <msp/strings/format.h>
+#include "directionallight.h"
#include "light.h"
-#include "matrix.h"
-#include "programdata.h"
+#include "pointlight.h"
using namespace std;
namespace Msp {
namespace GL {
-Light::Light():
- color(1),
- transmittance(1),
- position(0, 0, 1, 0),
- spot_dir(0, 0, -1),
- spot_exp(0),
- spot_cutoff(Geometry::Angle<float>::straight()),
- generation(0)
-{
- attenuation[0] = 1;
- attenuation[1] = 0;
- attenuation[2] = 0;
-}
-
-void Light::update_matrix()
-{
- Vector3 up_dir;
- if(20*abs(direction.z)>abs(direction.x)+abs(direction.y))
- up_dir.y = 1;
- else
- up_dir.z = 1;
- Vector3 right_dir = normalize(cross(direction, up_dir));
-
- Vector4 columns[4];
- columns[0] = compose(right_dir, 0.0f);
- columns[1] = compose(cross(right_dir, direction), 0.0f);
- columns[2] = compose(-direction, 0.0f);
- columns[3] = position;
- matrix = Matrix::from_columns(columns);
-}
-
void Light::set_color(const Color &c)
{
color = c;
++generation;
}
-void Light::set_transmittance(const Color &t)
-{
- transmittance = t;
- ++generation;
-}
-
-void Light::set_matrix(const Matrix &m)
-{
- Placeable::set_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_matrix();
- ++generation;
-}
-
-void Light::set_position(const Vector4 &p)
-{
- position = p;
- if(!position.w)
- direction = normalize(-position.slice<3>(0));
- update_matrix();
- ++generation;
-}
-
-void Light::set_spot_direction(const Vector3 &d)
-{
- spot_dir = normalize(d);
- if(position.w)
- direction = spot_dir;
- update_matrix();
- ++generation;
-}
-
-void Light::set_spot_exponent(float e)
-{
- if(e<0)
- throw invalid_argument("Light::set_spot_exponent");
-
- spot_exp = e;
- ++generation;
-}
-
-void Light::set_spot_cutoff(const Geometry::Angle<float> &c)
-{
- if(c<Geometry::Angle<float>::zero() || (c>Geometry::Angle<float>::right() && c!=Geometry::Angle<float>::straight()))
- throw invalid_argument("Light::set_spot_cutoff");
-
- spot_cutoff = c;
- ++generation;
-}
-
-void Light::disable_spot_cutoff()
-{
- set_spot_cutoff(Geometry::Angle<float>::straight());
- ++generation;
-}
-
-void Light::set_attenuation(float c, float l, float q)
+void Light::update_shader_data(ProgramData &shdata, unsigned i) const
{
- attenuation[0] = c;
- attenuation[1] = l;
- attenuation[2] = q;
- ++generation;
+ update_shader_data(shdata, format("light_sources[%d]", i));
}
-void Light::update_shader_data(ProgramData &shdata, unsigned i) const
+Light::GenericLoader::TypeRegistry &Light::get_light_registry()
{
- string base = format("light_sources[%d]", i);
- shdata.uniform(base+".position", position);
- shdata.uniform(base+".color", color.r*transmittance.r, color.g*transmittance.g, color.b*transmittance.b);
- shdata.uniform(base+".enabled", 1);
+ static GenericLoader::TypeRegistry registry;
+ static bool initialized = false;
+ if(!initialized)
+ {
+ initialized = true;
+ registry.register_type<DirectionalLight>("directional");
+ registry.register_type<PointLight>("point");
+ }
+ return registry;
}
Light::Loader::Loader(Light &l):
DataFile::ObjectLoader<Light>(l)
-{
- add("attenuation", &Loader::attenuation);
- add("color", &Loader::color);
- add("position", &Loader::position);
- add("spot_direction", &Loader::spot_direction);
- add("spot_exponent", &Loader::spot_exponent);
- add("spot_cutoff", &Loader::spot_cutoff);
-
- // Deprecated
- add("diffuse", &Loader::color);
- add("specular");
-}
+{ }
-void Light::Loader::attenuation(float c, float l, float q)
+void Light::Loader::init_actions()
{
- obj.set_attenuation(c, l, q);
+ add("color", &Loader::color);
}
void Light::Loader::color(float r, float g, float b)
obj.set_color(Color(r, g, b));
}
-void Light::Loader::position(float x, float y, float z, float w)
-{
- obj.set_position(Vector4(x, y, z, w));
-}
-
-void Light::Loader::spot_direction(float x, float y, float z)
-{
- obj.set_spot_direction(Vector3(x, y, z));
-}
-
-void Light::Loader::spot_exponent(float e)
-{
- obj.set_spot_exponent(e);
-}
-
-void Light::Loader::spot_cutoff(float c)
-{
- obj.set_spot_cutoff(Geometry::Angle<float>::from_degrees(c));
-}
-
} // namespace GL
} // namespace Msp