public override bool bounding_box(double t0, double t1, out aabb box)
{
if (ptr.bounding_box(t0, t1, out box))
{
box = new aabb(box.Min + offset, box.Max + offset);
return(true);
}
else
{
return(false);
}
}
public RotateZ(GeometryObject p, double angle)
{
ptr = p;
double radians = (Math.PI / 180.0) * angle;
sinTheta = Math.Sin(radians);
cosTheta = Math.Cos(radians);
hasBox = ptr.bounding_box(0, 1, out bbox);
Point3D min = new Point3D(1e30, 1e30, 1e30);
Point3D max = new Point3D(-1e30, -1e30, -1e30);
for (int i = 0; i < 2; ++i)
{
for (int j = 0; j < 2; ++j)
{
for (int k = 0; k < 2; ++k)
{
double x = i * bbox.Max.X + (1 - i) * bbox.Min.X;
double y = j * bbox.Max.Y + (1 - j) * bbox.Min.Y;
double z = k * bbox.Max.Z + (1 - k) * bbox.Min.Z;
double newX = cosTheta * x + sinTheta * y;
double newY = -sinTheta * x + cosTheta * y;
Point3D tster = new Point3D(newX, newY, z);
if (tster.X > max.X)
{
max.X = tster.X;
}
if (tster.X < min.X)
{
min.X = tster.X;
}
if (tster.Y > max.Y)
{
max.Y = tster.Y;
}
if (tster.Y < min.Y)
{
min.Y = tster.Y;
}
if (tster.Z > max.Z)
{
max.Z = tster.Z;
}
if (tster.Z < min.Z)
{
min.Z = tster.Z;
}
}
}
}
bbox = new aabb(min, max);
}
public bvh_node(List <GeometryObject> l)
{
int axis = (int)(3 * Form2.random());
if (axis == 0)
{
l.Sort(new Cmp_x().Compare);
}
else if (axis == 1)
{
l.Sort(new Cmp_y().Compare);
}
else
{
l.Sort(new Cmp_z().Compare);
}
int n = l.Count();
if (n == 1)
{
left = right = l[0];
}
else if (n == 2)
{
left = l[0];
right = l[1];
}
else
{
List <GeometryObject> left_l = new List <GeometryObject>(), right_l = new List <GeometryObject>();
for (int i = 0; i < n / 2; ++i)
{
left_l.Add(l[i]);
}
for (int i = n / 2; i < n; ++i)
{
right_l.Add(l[i]);
}
left = new bvh_node(left_l);
right = new bvh_node(right_l);
}
aabb box_left = null, box_right = null;
if (!left.bounding_box(0, 1, out box_left) || !right.bounding_box(0, 1, out box_right))
{
Console.WriteLine("no bounding box!");
}
_box = aabb.surrounding_box(box_left, box_right);
}
public override bool bounding_box(double t0, double t1, out aabb box)
{
bool rhs = obj.bounding_box(t0, t1, out box);
return(rhs);
}
public override bool bounding_box(double t0, double t1, out aabb box)
{
return(boundary.bounding_box(t0, t1, out box));
}