Added light environment classes

1 files changed, 108 insertions, 0 deletions

diff --git a/src/render/lightenvironment.cc b/src/render/lightenvironment.cc
new file mode 100644
index 0000000..8c65848
--- /dev/null
+++ b/src/render/lightenvironment.cc
@@ -0,0 +1,108 @@
+/*
+   render/lightenvironment.cc
+   This file is part of the Osirion project and is distributed under
+   the terms of the GNU General Public License version 2
+*/
+
+#include "render/lightenvironment.h"
+#include "render/gl.h"
+
+namespace render
+{
+
+LightEnvironment::LightEnvironment()
+{
+	env_base_id = GL_LIGHT0;
+	
+	env_attenuation = 0.0005f;
+	env_ambient_intensity = 0.1f;
+	env_diffuse_intensity = 0.75f;
+	env_specular_intensity = 0.75f;
+}
+
+LightEnvironment::~LightEnvironment()
+{
+	clear();
+}
+
+void LightEnvironment::clear()
+{
+	for (Container::iterator it = env_container.begin(); it != env_container.end(); ++it) {
+		Light *light = (*it);
+		delete light;
+		(*it) = 0;
+	}
+	env_container.clear();
+}
+
+void LightEnvironment::add(Light *light)
+{
+	env_container.push_back(light);
+}
+
+void LightEnvironment::enable()
+{
+	int gl_light_id = env_base_id;
+	for (Container::iterator it = env_container.begin(); it != env_container.end(); ++it) {
+		//Light *light = (*it);
+		gl::enable(gl_light_id);
+		
+		gl_light_id++;
+	}
+}
+
+void LightEnvironment::disable()
+{
+	int gl_light_id = env_base_id;
+	for (Container::iterator it = env_container.begin(); it != env_container.end(); ++it) {
+		//Light *light = (*it);		
+		gl::disable(gl_light_id);
+		gl_light_id++;
+	}
+}
+
+void LightEnvironment::draw(const math::Vector3f translate)
+{
+	GLfloat gl_light_location[4];
+	GLfloat gl_ambient_light[4];
+	GLfloat gl_diffuse_light[4];
+	GLfloat gl_specular_light[4];
+
+	int gl_light_id = env_base_id;
+	
+	for (Container::iterator it = env_container.begin(); it != env_container.end(); ++it) {
+		Light *light = (*it);
+		
+		for (size_t i = 0; i < 3; i++) {
+			gl_light_location[i] = light->location()[i];
+			gl_ambient_light[i] = light->color()[i] * env_ambient_intensity;
+			gl_diffuse_light[i] = light->color()[i] * env_diffuse_intensity;
+			gl_specular_light[i] = light->color()[i] * env_specular_intensity;
+		}	
+		
+		gl_light_location[3] = 1.0f;
+		gl_ambient_light[3] = 1.0f;
+		gl_diffuse_light[3] = 1.0f;
+		gl_specular_light[3] = 1.0f;
+		
+		glLightfv(gl_light_id, GL_POSITION, gl_light_location);
+		glLightfv(gl_light_id, GL_AMBIENT, gl_ambient_light);
+		glLightfv(gl_light_id, GL_DIFFUSE, gl_diffuse_light);
+		glLightfv(gl_light_id, GL_SPECULAR, gl_specular_light);
+		
+		// attenuation
+		glLightf(gl_light_id, GL_CONSTANT_ATTENUATION, light->attenuation()[0]);
+		glLightf(gl_light_id, GL_LINEAR_ATTENUATION, light->attenuation()[1]);
+		glLightf(gl_light_id, GL_QUADRATIC_ATTENUATION, light->attenuation()[2]);
+
+		
+		gl_light_id++;
+	}
+}
+
+void LightEnvironment::draw()
+{
+	draw(math::Vector3f());
+}
+
+} // namespace render