STOZEK

void RysujStozek(double R1, double R2, double H) {
float x, y, z, fi, OD, DO, OD1, DO1, R = R1;
const long double PI = 3.14,
EPS = PODZIAL_X,
EPS2 = PODZIAL_Y;
OD1 = 0.0;
DO1 = 2.0001 * PI;
OD = 0.0;
DO = 2.0001 * PI;
glBegin(GL_TRIANGLE_STRIP);
for (y = 0;
(y <= H) && (R >= R2); y += H / EPS, R -=
((R1 - R2) / EPS)) {
for (fi = OD1; fi < DO1; fi += PI / EPS2) {
x = R * cos(fi);
z = R * sin(fi);
glVertex3f(x, y, z);
x = (R - ((R1 - R2) / EPS)) * cos(fi +
PI / EPS2);
z = (R - ((R1 - R2) / EPS)) * sin(fi +
PI / EPS2);
glVertex3f(x, (y + H / EPS), z);
}
}
glEnd();
glBegin(GL_TRIANGLE_FAN);
glVertex3f(0.0, 0.0, 0.0);
for (fi = OD; fi <= DO; fi += PI / EPS2) {
x = R1 * cos(fi);
z = R1 * sin(fi);
glVertex3f(x, 0, z);
}
glEnd();
glBegin(GL_TRIANGLE_FAN);
glVertex3f(0, H, 0);
for (fi = OD; fi < DO; fi += PI / EPS2) {
x = R2 * cos(fi);
z = R2 * sin(fi);
glVertex3f(x, H, z);
}
glEnd();
}