nuclear@0: #include "opengl.h"
nuclear@0: 
nuclear@0: static void set_light_param(int idx, unsigned int p, float x, float y, float z)
nuclear@0: {
nuclear@0: 	float v[4];
nuclear@0: 	v[0] = x;
nuclear@0: 	v[1] = y;
nuclear@0: 	v[2] = z;
nuclear@0: 	v[3] = 1.0f;
nuclear@0: 	glLightfv(GL_LIGHT0 + idx, p, v);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_light_position(int idx, float x, float y, float z)
nuclear@0: {
nuclear@0: 	set_light_param(idx, GL_POSITION, x, y, z);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_light_color(int idx, float r, float g, float b)
nuclear@0: {
nuclear@0: 	set_light_param(idx, GL_DIFFUSE, r, g, b);
nuclear@0: 	set_light_param(idx, GL_SPECULAR, r, g, b);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_light_attenuation(int idx, float constant, float linear, float quad)
nuclear@0: {
nuclear@0: 	glLightf(GL_LIGHT0 + idx, GL_CONSTANT_ATTENUATION, constant);
nuclear@0: 	glLightf(GL_LIGHT0 + idx, GL_LINEAR_ATTENUATION, linear);
nuclear@0: 	glLightf(GL_LIGHT0 + idx, GL_QUADRATIC_ATTENUATION, quad);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: void set_mtl_diffuse(float r, float g, float b, float a)
nuclear@0: {
nuclear@0: 	float color[4];
nuclear@0: 	color[0] = r;
nuclear@0: 	color[1] = g;
nuclear@0: 	color[2] = b;
nuclear@0: 	color[3] = a;
nuclear@0: 	glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_mtl_specular(float r, float g, float b)
nuclear@0: {
nuclear@0: 	float color[4];
nuclear@0: 	color[0] = r;
nuclear@0: 	color[1] = g;
nuclear@0: 	color[2] = b;
nuclear@0: 	color[3] = 1.0f;
nuclear@0: 	glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_mtl_shininess(float shin)
nuclear@0: {
nuclear@0: 	glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, shin > 128.0 ? 128.0 : shin);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: void set_mtl_emission(float r, float g, float b)
nuclear@0: {
nuclear@0: 	float color[4];
nuclear@0: 	color[0] = r;
nuclear@0: 	color[1] = g;
nuclear@0: 	color[2] = b;
nuclear@0: 	color[3] = 1.0f;
nuclear@0: 	glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, color);
nuclear@0: }