public static SharpDX.RectangleF Project(this SharpDX.BoundingBox bounds, Helix.RenderContext context)
{
var corners = bounds.GetCorners();
for (int i = 0; i < corners.Length; i++)
{
corners[i] = SharpDX.Vector3.Project(corners[i], 0, 0, context.ActualWidth, context.ActualHeight, 0, 1, context.GlobalTransform.ViewProjection);
}
return(new SharpDX.RectangleF
{
Left = corners.Min(v => v.X),
Top = corners.Min(v => v.Y),
Right = corners.Max(v => v.X),
Bottom = corners.Max(v => v.Y),
});
}
public static GTABoundingBox2 ComputeBoundingBox(Entity entity)
{
var m = entity.Model;
(Vector3 gmin, Vector3 gmax) = m.Dimensions;
var bbox = new SharpDX.BoundingBox(new SharpDX.Vector3(gmin.X, gmin.Y, gmin.Z), new SharpDX.Vector3(gmax.X, gmax.Y, gmax.Z));
var res = new GTABoundingBox2
{
Min = new Vector2(float.PositiveInfinity, float.PositiveInfinity),
Max = new Vector2(float.NegativeInfinity, float.NegativeInfinity)
};
foreach (var corner in bbox.GetCorners())
{
var cornerVector = new Vector3(corner.X, corner.Y, corner.Z);
cornerVector = entity.GetOffsetPosition(cornerVector);
Vector2 position = HashFunctions.Convert3dTo2d(cornerVector);
if (position.X == .1f || position.Y == .1f || position.X == .9f || position.Y == .9f)
{
return(new GTABoundingBox2
{
Min = new Vector2(float.PositiveInfinity, float.PositiveInfinity),
Max = new Vector2(float.NegativeInfinity, float.NegativeInfinity),
Quality = DataQuality.Low
});
}
res = new GTABoundingBox2
{
Min = new Vector2(Math.Min(res.Min.X, position.X), Math.Min(res.Min.Y, position.Y)),
Max = new Vector2(Math.Max(res.Max.X, position.X), Math.Max(res.Max.Y, position.Y)),
Quality = DataQuality.High
};
}
if (res.Max.X == res.Min.X || res.Max.Y == res.Min.Y)
{
res.Quality = DataQuality.Low;
}
return(res);
}