X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flighting.cpp;h=a927d622fade9b0c81a916f51ef31bce079bf825;hb=89d3d10b75a42f86b224feb00b20283af66c0b01;hp=f5fbca6ac7ac954c5a2c63cd75590557e4245660;hpb=ce657d3b7783db9f3450162fbf07210ea1c8c661;p=libs%2Fgl.git

diff --git a/source/lighting.cpp b/source/lighting.cpp
index f5fbca6a..a927d622 100644
--- a/source/lighting.cpp
+++ b/source/lighting.cpp
@@ -1,7 +1,10 @@
 #include <stdexcept>
+#include <msp/gl/extensions/msp_legacy_features.h>
+#include "error.h"
 #include "light.h"
 #include "lighting.h"
 #include "lightunit.h"
+#include "matrix.h"
 #include "misc.h"
 
 using namespace std;
@@ -10,7 +13,9 @@ namespace Msp {
 namespace GL {
 
 Lighting::Lighting():
-	ambient(0.2)
+	ambient(0.2),
+	sky_direction(0, 0, 1),
+	horizon_angle(Geometry::Angle<float>::zero())
 { }
 
 void Lighting::set_ambient(const Color &a)
@@ -18,11 +23,23 @@ void Lighting::set_ambient(const Color &a)
 	ambient = a;
 }
 
-void Lighting::attach(unsigned i, const Light &l)
+void Lighting::set_sky_color(const Color &s)
+{
+	sky_color = s;
+}
+
+void Lighting::set_sky_direction(const Vector3 &d)
 {
-	if(i>=LightUnit::get_n_units())
-		throw out_of_range("Lighting::attach");
+	sky_direction = d;
+}
+
+void Lighting::set_horizon_angle(const Geometry::Angle<float> &a)
+{
+	horizon_angle = a;
+}
 
+void Lighting::attach(unsigned i, const Light &l)
+{
 	if(i>=lights.size())
 		lights.resize(i+1);
 
@@ -41,9 +58,18 @@ void Lighting::detach(unsigned i)
 		Light::unbind_from(i);
 }
 
+const Light *Lighting::get_attached_light(unsigned i) const
+{
+	return i<lights.size() ? lights[i] : 0;
+}
+
 void Lighting::update_shader_data(ProgramData &shdata, const Matrix &view_matrix) const
 {
 	shdata.uniform("ambient_color", ambient);
+	shdata.uniform("sky_color", sky_color);
+	shdata.uniform("eye_sky_dir", view_matrix.block<3, 3>(0, 0)*sky_direction);
+	shdata.uniform("horizon_limit", horizon_angle.radians());
+
 	for(unsigned i=0; i<lights.size(); ++i)
 		if(lights[i])
 			lights[i]->update_shader_data(shdata, view_matrix, i);
@@ -51,6 +77,10 @@ void Lighting::update_shader_data(ProgramData &shdata, const Matrix &view_matrix
 
 void Lighting::bind() const
 {
+	static Require _req(MSP_legacy_features);
+	if(lights.size()>LightUnit::get_n_units())
+		throw invalid_operation("Lighting::bind");
+
 	if(!set_current(this))
 		return;