public static BoundingRectangle GetBoundsFromPath(List<PathInfo> list)
{
// Only support simple paths
if (list.First().segmentType != SegmentType.Move)
{
return null;
}
if (list.Last().segmentType != SegmentType.Close)
{
return null;
}
if (list.Skip(1).Take(list.Count - 2).Any(p => p.segmentType != SegmentType.Line))
{
return null;
}
BoundingRectangle ret = new BoundingRectangle();
foreach (var i in list.Take(list.Count - 1))
{
ret.UpdateBounds(i.point);
}
return ret;
}
public void SetViewForMap(BoundingRectangle buildingBounds, double overlayActualWidth, double overlayActualHeight)
{
// NOTE: Do *not* reorder the transformation calls.
// Transforms are non-abelian.
ViewTransform.CenterX = overlayActualWidth / 2;
ViewTransform.CenterY = overlayActualHeight / 2;
SetBaseRotation();
this.SetTranslation(overlayActualWidth / 2, overlayActualHeight / 2);
// After centering, then can do the scaling.
double sizeOfMapOnScreen = Math.Sqrt(
buildingBounds.Width * buildingBounds.Width +
buildingBounds.Height * buildingBounds.Height)
* ViewChildrenTransform.Scale;
double minViewSize = Math.Min(overlayActualHeight, overlayActualWidth);
if (minViewSize != 0)
{
AddScale(minViewSize / sizeOfMapOnScreen);
}
Canvas.SetLeft(this.viewBackground, -mapSize / 2);
Canvas.SetTop(this.viewBackground, -mapSize / 2);
}