protected override IEnumerable <DxfPoint> GetExtentsPoints()
{
if (GetEntities != null)
{
var boundingBoxes = GetEntities().Select(e => e.GetBoundingBox()).Where(bb => bb.HasValue).Select(bb => bb.GetValueOrDefault()).ToList();
if (boundingBoxes.Count == 0)
{
yield break;
}
var boundingBox = DxfBoundingBox.FromEnumerable(boundingBoxes);
var minX = boundingBox.MinimumPoint.X * XScaleFactor + Location.X;
var minY = boundingBox.MinimumPoint.Y * YScaleFactor + Location.Y;
var minZ = boundingBox.MinimumPoint.Z * ZScaleFactor + Location.Z;
var maxX = boundingBox.MaximumPoint.X * XScaleFactor + Location.X;
var maxY = boundingBox.MaximumPoint.Y * YScaleFactor + Location.Y;
var maxZ = boundingBox.MaximumPoint.Z * ZScaleFactor + Location.Z;
var minP = new DxfPoint(minX, minY, minZ);
var maxP = new DxfPoint(maxX, maxY, maxZ);
yield return(minP);
yield return(maxP);
}
}
