nuclear@4: #include "opengl.h"
nuclear@4: #include "light.h"
nuclear@4: 
nuclear@4: Light::Light(const Color &col)
nuclear@4: 	: color(col)
nuclear@4: {
nuclear@4: 	intensity = 1.0;
nuclear@4: }
nuclear@4: 
nuclear@4: Light::~Light() {}
nuclear@4: 
nuclear@4: void Light::set_intensity(float val)
nuclear@4: {
nuclear@4: 	intensity = val;
nuclear@4: }
nuclear@4: 
nuclear@4: void Light::set_color(const Color &col)
nuclear@4: {
nuclear@4: 	color = col;
nuclear@4: }
nuclear@4: 
nuclear@4: void Light::use(int id) const
nuclear@4: {
nuclear@4: 	glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, &color.x);
nuclear@4: 	glLightfv(GL_LIGHT0 + id, GL_SPECULAR, &color.x);
nuclear@4: }
nuclear@4: 
nuclear@4: 
nuclear@4: PointLight::PointLight()
nuclear@4: {
nuclear@4: 	atten[0] = 1.0f;
nuclear@4: 	atten[1] = 0.0f;
nuclear@4: 	atten[2] = 0.0f;
nuclear@4: }
nuclear@4: 
nuclear@4: PointLight::PointLight(const Vector3 &pos, const Color &col)
nuclear@4: 	: Light(col)
nuclear@4: {
nuclear@4: 	this->pos = pos;
nuclear@4: 	atten[0] = 1.0f;
nuclear@4: 	atten[1] = 0.0f;
nuclear@4: 	atten[2] = 0.0f;
nuclear@4: }
nuclear@4: 
nuclear@4: void PointLight::set_position(const Vector3 &pos)
nuclear@4: {
nuclear@4: 	this->pos = pos;
nuclear@4: }
nuclear@4: 
nuclear@4: void PointLight::set_attenuation(float att_const, float att_lin, float att_quad)
nuclear@4: {
nuclear@4: 	atten[0] = att_const;
nuclear@4: 	atten[1] = att_lin;
nuclear@4: 	atten[2] = att_quad;
nuclear@4: }
nuclear@4: 
nuclear@4: void PointLight::use(int id) const
nuclear@4: {
nuclear@4: 	float lpos[] = {pos.x, pos.y, pos.z, 1.0f};
nuclear@4: 	glLightfv(GL_LIGHT0 + id, GL_POSITION, lpos);
nuclear@4: 	glLightf(GL_LIGHT0 + id, GL_CONSTANT_ATTENUATION, atten[0]);
nuclear@4: 	glLightf(GL_LIGHT0 + id, GL_LINEAR_ATTENUATION, atten[1]);
nuclear@4: 	glLightf(GL_LIGHT0 + id, GL_QUADRATIC_ATTENUATION, atten[2]);
nuclear@4: }
nuclear@4: 
nuclear@4: 
nuclear@4: void set_light(int id, const Light *lt)
nuclear@4: {
nuclear@4: 	if(lt) {
nuclear@4: 		glDisable(GL_LIGHT0 + id);
nuclear@4: 	} else {
nuclear@4: 		glEnable(GL_LIGHT0 + id);
nuclear@4: 		lt->use(id);
nuclear@4: 	}
nuclear@4: }