void
init(void)
{
GLfloat matDiff[4] = { 0.65F, 0.05F, 0.20F, 0.60F };
GLfloat matSpec[4] = { 0.50F, 0.50F, 0.50F, 1.00F };
GLfloat matShine = 20.00F;
GLint indexes[3];
GLfloat light0Pos[4] = { 0.70F, 0.70F, 1.25F, 0.00F };
glClearColor(colors[2].diff[0], colors[2].diff[1], colors[2].diff[2], 1.0F);
glClearIndex((GLfloat) colors[2].indexes[1]);
setProjection();
glTranslatef(0.0F, 0.0F, -2.0F);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, matDiff);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, matSpec);
glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, matShine);
indexes[0] = 0;
indexes[1] = colors[0].indexes[1] - colors[0].indexes[0];
indexes[2] = colors[0].indexes[2] - colors[0].indexes[0];
glMaterialiv(GL_FRONT_AND_BACK, GL_COLOR_INDEXES, indexes);
glLightfv(GL_LIGHT0, GL_POSITION, light0Pos);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHTING);
glEnable(GL_DEPTH_TEST);
setCheckTexture();
glEnable(GL_TEXTURE_2D);
glEnable(GL_CULL_FACE);
}
void
redraw(void)
{
glClearColor(0.1, 0.1, 0.1, 1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glBegin(GL_QUADS);
glColor3f(0.9, 0.0, 1.0);
glVertex3f(-2.0, -2.0, -1.0);
glColor3f(0.9, 0.0, 1.0);
glVertex3f(2.0, -2.0, -1.0);
glColor3f(0.0, 0.1, 0.1);
glVertex3f(2.0, 2.0, -1.0);
glColor3f(0.0, 0.1, 0.1);
glVertex3f(-2.0, 2.0, -1.0);
glEnd();
glEnable(GL_DEPTH_TEST);
if (useLighting) {
glEnable(GL_LIGHTING);
glPushMatrix();
glRotatef(lightRotY, 0, 1, 0);
glRotatef(lightRotX, 1, 0, 0);
setLight();
glPopMatrix();
} else {
glColor3f(0.2, 0.2, 0.2);
}
if (useTexture || useSpecularTexture) {
glEnable(GL_TEXTURE_2D);
}
if (useTexture) {
setCheckTexture();
} else {
setNullTexture();
}
if (useSpecularTexture) {
/* pass one */
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ZERO);
setMaterial(MAT_NO_SPECULAR);
} else {
setMaterial(MAT_ALL);
}
glPushMatrix();
glRotatef(objectRotY, 0, 1, 0);
glRotatef(objectRotX, 1, 0, 0);
if (useHighRes) {
switch (drawObj) {
case 0:
drawSphere(64, 64, 0.8);
break;
case 1:
drawCylinder(32, 64, 1.0, 0.4);
break;
case 2:
drawTorus(64, 64, 0.6, 0.2);
break;
default:
break;
}
} else {
switch (drawObj) {
case 0:
drawSphere(16, 32, 0.8);
break;
case 1:
drawCylinder(6, 16, 1.0, 0.4);
break;
case 2:
drawTorus(32, 16, 0.6, 0.2);
break;
default:
break;
}
}
glPopMatrix();
if (useSpecularTexture) {
/* pass two */
if (!useLighting) {
glColor3f(1.0, 1.0, 1.0);
}
glBlendFunc(GL_ONE, GL_ONE);
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
setMaterial(MAT_SPECULAR_TEXTURE_ONLY);
glPushMatrix();
glRotatef(objectRotY, 0, 1, 0);
glRotatef(objectRotX, 1, 0, 0);
if (useHighRes) {
switch (drawObj) {
case 0:
drawSphere(64, 64, 0.8);
break;
case 1:
drawCylinder(32, 64, 1.0, 0.4);
break;
case 2:
drawTorus(64, 64, 0.6, 0.2);
break;
default:
break;
}
} else {
switch (drawObj) {
case 0:
drawSphere(16, 32, 0.8);
break;
case 1:
drawCylinder(6, 16, 1.0, 0.4);
break;
case 2:
drawTorus(32, 16, 0.6, 0.2);
break;
default:
break;
}
}
glPopMatrix();
}
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_GEN_S);
glDisable(GL_TEXTURE_GEN_T);
}
