《基于MFC的OpenGL编程》Part 16 Reflection

《基于MFC的OpenGL编程》Part 16 Reflection2010-05-02 博客园 Phinecos（洞庭散人）

Reflections

Adding reflections to a program too can improve its realism to a great extent. Here we"ll look at a simple method to create reflection where we simply redraw the object with an appropriate transformation and make the surface in between translucent. This creates an effective illusion of reflection！！

1,设置光源代码修改如下：

void CCY457OpenGLView::SetupLighting （）
{
//Material Properties
GLfloat matSpecular[] = { 1.0f, 0.0f, 0.0f, 0.7f};
GLfloat matShininess[] = { 50.0f};
GLfloat matAmbient[] = { 0.25f, 0.25f, 0.25f, 0.7f};
GLfloat matDiffuse[] = { 0.5f, 0.5f, 0.5f, 0.7f};
glMaterialfv（GL_FRONT, GL_SPECULAR, matSpecular）;
glMaterialfv（GL_FRONT, GL_SHININESS, matShininess）;
glMaterialfv（GL_FRONT, GL_DIFFUSE, matDiffuse）;
glMaterialfv（GL_FRONT, GL_AMBIENT, matAmbient）;
//Lighting Parameters
//Enable Lighting
glEnable（GL_LIGHTING）;
//Specify a single directional light
GLfloat ambient1[] = { 0.5f,0.5f,0.5f};
GLfloat diffuse1[] = { 0.5f,0.5f,0.5f};
GLfloat specular1[] = { 1.0f,0.0f,0.0f};
GLfloat position1[] = { 0.0f,0.0f,5.0f,0.0};
glLightfv（GL_LIGHT0, GL_AMBIENT, ambient1）;
glLightfv（GL_LIGHT0, GL_DIFFUSE, diffuse1）;
glLightfv（GL_LIGHT0, GL_SPECULAR, specular1）;
glLightfv（GL_LIGHT0, GL_POSITION, position1）;
glEnable（GL_LIGHT0）;
//Specify a single positional spotlight
GLfloat ambient2[] = { 1.0f,1.0f,0.0f};
GLfloat diffuse2[] = { 1.0f,0.0f,0.0f};
GLfloat position2[] = { 1.0f,0.0f,5.0f,1.0};
GLfloat direction2[] = {0.0f,0.0f,-5.0f};
glLightfv（GL_LIGHT1, GL_AMBIENT, ambient2）;
glLightfv（GL_LIGHT1, GL_DIFFUSE, diffuse2）;
glLightfv（GL_LIGHT1, GL_POSITION, position2）;
glLightfv（GL_LIGHT1, GL_SPOT_DIRECTION, direction2）;
glLightf（GL_LIGHT1, GL_SPOT_CUTOFF, 15.0f）;
glEnable（GL_LIGHT1）;
}