private void OnLoad()
{
eye = new Vector5(0, 0, 0, 0, 1);
up = new Vector5(0, 1, 0, 0, 0);
right = new Vector5(1, 0, 0, 0, 0);
forward = new Vector5(0, 0, -1, 0, 0);
}
public double intersect(Ray r)
{
Vector5 diff = center - r.origin;
double r2 = radius * radius;
double rMag = r.direction.sqrMagnitude();
bool isInside = diff.sqrMagnitude() < r2;
double tc = (diff * r.direction) / (rMag);
if (!isInside && tc < 0)
{
return(-1);
}
double d2 = ((r.origin + (tc * r.direction)) - center).sqrMagnitude();
if (!isInside && d2 > r2)
{
return(-1);
}
double tOff = Math.Sqrt(r2 - d2) / Math.Sqrt(rMag);
return(tc + tOff * (isInside ? 1 : -1));
}
public Vector5 getNormal(Vector5 pos)
{
return((pos - center) / radius);
}
public Vector4 getColor(Vector5 pos)
{
return(color);
}