public static BoundingBox GetBoundingBox(IEnumerable<Point3D> points)
{
BoundingBox box = new BoundingBox();
if (points != null)
{
box.Min = new Point3D(double.PositiveInfinity, double.PositiveInfinity, double.PositiveInfinity);
box.Max = new Point3D(double.NegativeInfinity, double.NegativeInfinity, double.NegativeInfinity);
foreach (Point3D point in points)
{
if (point.X < box.Min.X)
box.Min.X = point.X;
if (point.Y < box.Min.Y)
box.Min.Y = point.Y;
if (point.Z < box.Min.Z)
box.Min.Z = point.Z;
if (point.X > box.Max.X)
box.Max.X = point.X;
if (point.Y > box.Max.Y)
box.Max.Y = point.Y;
if (point.Z > box.Max.Z)
box.Max.Z = point.Z;
}
}
return box;
}
public static BoundingBox GetBoundingBox(Visual3DCollection visualItems)
{
BoundingBox result = new BoundingBox();
foreach (Visual3D item in visualItems)
{
ModelVisual3D visual = (item as ModelVisual3D);
if (visual != null)
{
Body body = World.GetBody(visual);
if (body != null)
{
BoundingBox box = GetBoundingBox(body);
Matrix3D matrix = (body.Transform != null) ? body.Transform.Value : Matrix3D.Identity;
box.Min = matrix.Transform(box.Min);
box.Max = matrix.Transform(box.Max);
result.Union(box);
}
}
}
return result;
}
public void Union(BoundingBox box)
{
if (box.Min.X < this.Min.X)
this.Min.X = box.Min.X;
if (box.Min.Y < this.Min.Y)
this.Min.Y = box.Min.Y;
if (box.Min.Z < this.Min.Z)
this.Min.Z = box.Min.Z;
if (box.Max.X > this.Max.X)
this.Max.X = box.Max.X;
if (box.Max.Y > this.Max.Y)
this.Max.Y = box.Max.Y;
if (box.Max.Z > this.Max.Z)
this.Max.Z = box.Max.Z;
}
private void SetNewCenter(Point3D newCenter, BoundingBox box)
{
newCenter.Y *= -1;
Point3D boxCenter = box.CenterPos;
Vector3D offsetBy = ((Vector3D)newCenter - (Vector3D)boxCenter) - _offset;
OffsetCollisionMask(offsetBy, this.Visual.Content != null);
_offset += offsetBy;
}