void Lighting::LightScene()
{
#define LIGHTSETUP(i)\
if (lightEnabled[i])\
{\
glLightfv(GL_LIGHT##i, GL_POSITION, &lightPosition[4*i]);\
glLightfv(GL_LIGHT##i, GL_AMBIENT, &lKa[4*i]);\
glLightfv(GL_LIGHT##i, GL_DIFFUSE, &lKd[4*i]);\
glLightfv(GL_LIGHT##i, GL_SPECULAR, &lKs[4*i]);\
}
LIGHTSETUP(0);
LIGHTSETUP(1);
LIGHTSETUP(2);
LIGHTSETUP(3);
LIGHTSETUP(4);
LIGHTSETUP(5);
LIGHTSETUP(6);
LIGHTSETUP(7);
glEnable(GL_LIGHTING);
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// camera parameters are Phi, Theta, R
gluLookAt(R * cos(Phi) * cos (Theta), R * sin (Theta), R * sin(Phi) * cos (Theta),
0.0,0.0,0.0, 0.0,1.0,0.0);
/* Lighting */
/* You are encouraged to change lighting parameters or make improvements/modifications
to the lighting model .
This way, you will personalize your assignment and your assignment will stick out.
*/
// global ambient light
GLfloat aGa[] = { 0.0, 0.0, 0.0, 0.0 };
// light 's ambient, diffuse, specular
GLfloat lKa0[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat lKd0[] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat lKs0[] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat lKa1[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat lKd1[] = { 1.0, 0.0, 0.0, 1.0 };
GLfloat lKs1[] = { 1.0, 0.0, 0.0, 1.0 };
GLfloat lKa2[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat lKd2[] = { 1.0, 1.0, 0.0, 1.0 };
GLfloat lKs2[] = { 1.0, 1.0, 0.0, 1.0 };
GLfloat lKa3[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat lKd3[] = { 0.0, 1.0, 1.0, 1.0 };
GLfloat lKs3[] = { 0.0, 1.0, 1.0, 1.0 };
GLfloat lKa4[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat lKd4[] = { 0.0, 0.0, 1.0, 1.0 };
GLfloat lKs4[] = { 0.0, 0.0, 1.0, 1.0 };
GLfloat lKa5[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat lKd5[] = { 1.0, 0.0, 1.0, 1.0 };
GLfloat lKs5[] = { 1.0, 0.0, 1.0, 1.0 };
GLfloat lKa6[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat lKd6[] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat lKs6[] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat lKa7[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat lKd7[] = { 0.0, 1.0, 1.0, 1.0 };
GLfloat lKs7[] = { 0.0, 1.0, 1.0, 1.0 };
// light positions and directions
GLfloat lP0[] = { -1.999, -1.999, -1.999, 1.0 };
GLfloat lP1[] = { 1.999, -1.999, -1.999, 1.0 };
GLfloat lP2[] = { 1.999, 1.999, -1.999, 1.0 };
GLfloat lP3[] = { -1.999, 1.999, -1.999, 1.0 };
GLfloat lP4[] = { -1.999, -1.999, 1.999, 1.0 };
GLfloat lP5[] = { 1.999, -1.999, 1.999, 1.0 };
GLfloat lP6[] = { 1.999, 1.999, 1.999, 1.0 };
GLfloat lP7[] = { -1.999, 1.999, 1.999, 1.0 };
// jelly material color
GLfloat mKa[] = { 0.0, 0.0, 0.0, 1.0 };
GLfloat mKd[] = { 0.3, 0.3, 0.3, 1.0 };
GLfloat mKs[] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat mKe[] = { 0.0, 0.0, 0.0, 1.0 };
/* set up lighting */
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, aGa);
glLightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, GL_FALSE);
// set up cube color
glMaterialfv(GL_FRONT, GL_AMBIENT, mKa);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mKd);
glMaterialfv(GL_FRONT, GL_SPECULAR, mKs);
glMaterialfv(GL_FRONT, GL_EMISSION, mKe);
glMaterialf(GL_FRONT, GL_SHININESS, 120);
// macro to set up light i
#define LIGHTSETUP(i)\
glLightfv(GL_LIGHT##i, GL_POSITION, lP##i);\
glLightfv(GL_LIGHT##i, GL_AMBIENT, lKa##i);\
glLightfv(GL_LIGHT##i, GL_DIFFUSE, lKd##i);\
glLightfv(GL_LIGHT##i, GL_SPECULAR, lKs##i);\
glEnable(GL_LIGHT##i)
LIGHTSETUP (0);
LIGHTSETUP (1);
LIGHTSETUP (2);
LIGHTSETUP (3);
LIGHTSETUP (4);
LIGHTSETUP (5);
LIGHTSETUP (6);
LIGHTSETUP (7);
// enable lighting
glEnable(GL_LIGHTING);
glEnable(GL_DEPTH_TEST);
// show the cube
//showCube(&jello);
glDisable(GL_LIGHTING);
// show the bounding box
showBoundingBox();
// show Circle and Chain
showCircle();
showChain(&jello);
showText(&jello);
glutSwapBuffers();
}
