protected List<Vector3D> GetAdditionalPoints(List<Vector3D> points, REShapeComposite composite)
{
List<Vector3D> additional = new List<Vector3D>();
foreach (REBaseShape child in composite) {
RESphere sphere = child as RESphere;
if (child is REShapeComposite) {
sphere = ((REShapeComposite)child).BoundingShape as RESphere;
}
if (sphere == null) continue;
for (int i = 0; i < points.Count; i++) {
Vector3D c = points[i];
Vector3D dir = sphere.Position - c;
additional.Add(sphere.Position + dir.Normalize() * sphere.Radius);
}
}
return additional;
}
protected virtual void OptimizeComposite(REShapeComposite composite)
{
var points = new List<Vector3D>();
foreach (REBaseShape child in composite) {
if (child is RETriangle) {
RETriangle triangle = (RETriangle)child;
points.Add(triangle.A);
points.Add(triangle.B);
points.Add(triangle.C);
continue;
}
if (child is RERectangle) {
var rectangle = (RERectangle)child;
points.Add(rectangle.A);
points.Add(rectangle.B);
points.Add(rectangle.C);
points.Add(rectangle.B + rectangle.C - rectangle.A);
continue;
}
}
List<Vector3D> prev = points;
for (int i = 0; i < 0; i++) {
List<Vector3D> additional = GetAdditionalPoints(prev, composite);
points.AddRange(additional);
prev = additional;
}
Vector3D a = new Vector3D(), b = new Vector3D();
float maxLength = float.MinValue;
for (int i = 0; i < points.Count; i++) {
for (int j = 0; j < points.Count; j++) {
float length = (points[i] - points[j]).Length;
if (length > maxLength) {
a = points[i];
b = points[j];
maxLength = length;
}
}
}
if ((a - b).Length > 0.01) {
Sphere3D holder = new Sphere3D();
Vector3D center = (a + b) * 0.5f;
holder.CoordinateSystem.Position = center;
holder.Radius = (a - b).Length / 2;
composite.BoundingShape = new RESphere(holder);
}
}
public void Visit(Shape3DComposite composite)
{
_context.PushCoordinateSystem(composite.CoordinateSystem);
var decorated = new REShapeComposite(composite);
foreach (Shape3D child in composite) {
child.AcceptVisitor(this);
decorated.Add(_decoratedShape);
}
OptimizeComposite(decorated);
_context.PopCoordinateSystem();
_decoratedShape = decorated;
}
