OpenGL超级宝典学习笔记——光照参数与材料属性

//明亮的白光
GLfloat ambientLight[] = {1.0f, 1.0f, 1.0f, 1.0f};
//开启光照
glEnable(GL_LIGHTING);
//设置全局环境光为白光
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambientLight);

//灰色的材料属性
GLfloat gray[] = {0.75f, 0.75f, 0.75f, 1.0f};

glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, gray);
glBegin(GL_TRIANGLES);
    glVertex3f(-15.0f, 0.0f, 30.0f);
    glVertex3f(0.0f, 15.0f, 30.0f);
    glVertex3f(0.0f, 0.0f, -56.0f);
glEnd();

//开启颜色追踪
glEnable(GL_COLOR_MATERIAL);
//设置颜色追踪的材料属性以及多边形的面
glColorMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE);

//设置颜色
glColor3f(0.75f, 0.75f, 0.75f);
glBegin(GL_TRIANGLES);
    glVertex3f(-15.0f, 0.0f, 30.0f);
    glVertex3f(0.0f, 15.0f, 30.0f);
    glVertex3f(0.0f, 0.0f, -56.0f);
glEnd();

void SetupRC()
{
  GLfloat ambientLight[] = {1.0f, 1.0f, 1.0f, 1.0f};
  glEnable(GL_DEPTH_TEST);    
  glEnable(GL_CULL_FACE);       
  glFrontFace(GL_CCW);        

  glEnable(GL_COLOR_MATERIAL);
  glEnable(GL_LIGHTING);
  //设置光照模型
  glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambientLight);
  //设置材料追踪
  glColorMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE);


  glClearColor(0.0f, 0.0f, 05.f,1.0f);
}