void Cone::draw(bool debug) {
Point c = apex.translate(axis);
Vector e0 = perp(axis);
Vector v3 = e0.cross(axis);
Point e1(v3.getX(), v3.getY(), v3.getZ());
std::vector <Point> pts;
for (int i = 0; i < meridians; ++i) {
double rad = 2 * M_PI * i / meridians;
double x = c.getX() + (e0.getX() * cos(rad) + e1.getX() * sin(rad)) * rayon;
double y = c.getY() + (e0.getY() * cos(rad) + e1.getY() * sin(rad)) * rayon;
double z = c.getZ() + (e0.getZ() * cos(rad) + e1.getZ() * sin(rad)) * rayon;
Point p(x, y, z);
pts.push_back(p);
}
// draw cone top
glBegin(GL_TRIANGLE_FAN);
glPoint(apex);
for (int i = 0; i < meridians; ++i) {
glPoint(pts.at(i));
}
glPoint(pts.at(0));
glEnd();
if (debug) {
glColor3f(1.0f, 0.0f, 0.0f);
for (int i = 0; i < meridians; ++i) {
glBegin(GL_LINES);
glPoint(apex);
glPoint(pts.at(i));
glEnd();
}
}
}
void generateRandomSpheres( int n,
float minRadius, float maxRadius,
float minPosX, float maxPosX,
float minPosY, float maxPosY,
float minPosZ, float maxPosZ,
std::vector<glSphere>& list
)
{
for( int i = 0; i < n; ++i )
{
float radius = sf::Randomizer::Random( minRadius, maxRadius );
float x = sf::Randomizer::Random( minPosX, maxPosX );
float y = sf::Randomizer::Random( minPosY, maxPosY );
float z = sf::Randomizer::Random( minPosZ, maxPosZ );
list.push_back( glSphere( glPoint( x, y, z ), radius ) );
}
}
