dungeon_crawler

annotate prototype/src/light.cc @ 20:48cfd351a9be

mrt going on nicely
author John Tsiombikas <nuclear@member.fsf.org>
date Tue, 21 Aug 2012 04:57:33 +0300
parents
children 0588f8a1a351
rev   line source
nuclear@4 1 #include "opengl.h"
nuclear@4 2 #include "light.h"
nuclear@4 3
nuclear@4 4 Light::Light(const Color &col)
nuclear@4 5 : color(col)
nuclear@4 6 {
nuclear@4 7 intensity = 1.0;
nuclear@4 8 }
nuclear@4 9
nuclear@4 10 Light::~Light() {}
nuclear@4 11
nuclear@4 12 void Light::set_intensity(float val)
nuclear@4 13 {
nuclear@4 14 intensity = val;
nuclear@4 15 }
nuclear@4 16
nuclear@4 17 void Light::set_color(const Color &col)
nuclear@4 18 {
nuclear@4 19 color = col;
nuclear@4 20 }
nuclear@4 21
nuclear@4 22 void Light::use(int id) const
nuclear@4 23 {
nuclear@4 24 glLightfv(GL_LIGHT0 + id, GL_DIFFUSE, &color.x);
nuclear@4 25 glLightfv(GL_LIGHT0 + id, GL_SPECULAR, &color.x);
nuclear@4 26 }
nuclear@4 27
nuclear@4 28
nuclear@4 29 PointLight::PointLight()
nuclear@4 30 {
nuclear@4 31 atten[0] = 1.0f;
nuclear@4 32 atten[1] = 0.0f;
nuclear@4 33 atten[2] = 0.0f;
nuclear@4 34 }
nuclear@4 35
nuclear@4 36 PointLight::PointLight(const Vector3 &pos, const Color &col)
nuclear@4 37 : Light(col)
nuclear@4 38 {
nuclear@4 39 this->pos = pos;
nuclear@4 40 atten[0] = 1.0f;
nuclear@4 41 atten[1] = 0.0f;
nuclear@4 42 atten[2] = 0.0f;
nuclear@4 43 }
nuclear@4 44
nuclear@4 45 void PointLight::set_position(const Vector3 &pos)
nuclear@4 46 {
nuclear@4 47 this->pos = pos;
nuclear@4 48 }
nuclear@4 49
nuclear@4 50 void PointLight::set_attenuation(float att_const, float att_lin, float att_quad)
nuclear@4 51 {
nuclear@4 52 atten[0] = att_const;
nuclear@4 53 atten[1] = att_lin;
nuclear@4 54 atten[2] = att_quad;
nuclear@4 55 }
nuclear@4 56
nuclear@4 57 void PointLight::use(int id) const
nuclear@4 58 {
nuclear@4 59 float lpos[] = {pos.x, pos.y, pos.z, 1.0f};
nuclear@4 60 glLightfv(GL_LIGHT0 + id, GL_POSITION, lpos);
nuclear@4 61 glLightf(GL_LIGHT0 + id, GL_CONSTANT_ATTENUATION, atten[0]);
nuclear@4 62 glLightf(GL_LIGHT0 + id, GL_LINEAR_ATTENUATION, atten[1]);
nuclear@4 63 glLightf(GL_LIGHT0 + id, GL_QUADRATIC_ATTENUATION, atten[2]);
nuclear@4 64 }
nuclear@4 65
nuclear@4 66
nuclear@4 67 void set_light(int id, const Light *lt)
nuclear@4 68 {
nuclear@4 69 if(lt) {
nuclear@4 70 glDisable(GL_LIGHT0 + id);
nuclear@4 71 } else {
nuclear@4 72 glEnable(GL_LIGHT0 + id);
nuclear@4 73 lt->use(id);
nuclear@4 74 }
nuclear@4 75 }