public bool Intersects(BoundingRect rect)
{
Vector2 circleDistance = Vector2.Zero;
Vector2 rectSize = rect.Max - rect.Min;
circleDistance.X = Math.Abs(center.X - (rect.Min.X + rectSize.X/2));
circleDistance.Y = Math.Abs(center.Y - (rect.Min.Y + rectSize.Y / 2));
if (circleDistance.X > rectSize.X / 2 + radius) return false;
if (circleDistance.Y > rectSize.Y / 2 + radius) return false;
if (circleDistance.X <= rectSize.X / 2) return true;
if (circleDistance.Y <= rectSize.Y / 2) return true;
float deltaX = circleDistance.X - rectSize.X / 2;
float deltaY = circleDistance.Y - rectSize.Y / 2;
float cornerDistanceSquared = deltaX * deltaX + deltaY * deltaY;
return cornerDistanceSquared <= radius * radius;
}
public bool Intersects(BoundingRect rect)
{
return false;
}
public ConvexHull(Game game, Vector2[] points, Color color, Vector2 position)
{
this.game = game;
this.position = position;
int vertexCount = points.Length;
vertices = new VertexPositionColor[vertexCount + 1];
Vector2 center = Vector2.Zero;
bool zeroPoint = false;
for (int i = 0; i < vertexCount; i++)
{
vertices[i] = new VertexPositionColor(new Vector3(points[i], 0), color);
center += points[i];
if (!zeroPoint && points[i] == Vector2.Zero)
{
zeroPoint = true;
}
}
center /= points.Length;
vertices[vertexCount] = new VertexPositionColor(new Vector3(center, 0), color);
primitiveCount = points.Length;
indices = new short[primitiveCount * 3];
for (int i = 0; i < primitiveCount; i++)
{
indices[3 * i] = (short)i;
indices[3 * i + 1] = (short)((i + 1) % vertexCount);
indices[3 * i + 2] = (short)vertexCount;
}
backFacing = new bool[vertexCount];
sphereBox = points.Length != 4 || !zeroPoint;
if (sphereBox)
{
boundingSphere = new BoundingCircle();
float boundingRadius = 0;
foreach (Vector2 point in points)
{
if ((center - point).Length() > boundingRadius)
{
boundingRadius = (center - point).Length();
}
}
boundingSphere.Center = center + position;
boundingSphere.Radius = boundingRadius;
}
else
{
boundingBox = new BoundingRect();
List<Vector2> realPoints = new List<Vector2>();
foreach (Vector2 point in points)
{
realPoints.Add(point + position);
}
boundingBox.CreateFromPoints(realPoints);
}
}
