private bool BoundsMatchSnapLine(Rect bounds, SnapLine snapLine)
{
if (snapLine.Location == SnapLineLocation.Baseline)
{
return(true);
}
Point cornerPoint1;
Point cornerPoint2;
this.GetTargetCorners(bounds, snapLine.Orientation, snapLine.LocationRelativeToTarget, out cornerPoint1, out cornerPoint2);
double signedDistance1 = snapLine.GetSignedDistance(cornerPoint1);
double signedDistance2 = snapLine.GetSignedDistance(cornerPoint2);
if (Math.Abs(signedDistance1 + snapLine.OffsetRelativeToTarget) < 0.01)
{
return(Math.Abs(signedDistance2 + snapLine.OffsetRelativeToTarget) < 0.01);
}
return(false);
}
private bool ShouldSnap(Point p1, Point p2, SnapLineLocation location, SnapLine snapLine, out double offset)
{
offset = 0.0;
if (location == snapLine.Location)
{
if (!snapLine.IsContainerLine)
{
return(true);
}
if (snapLine.RangeOverlaps(p1, p2))
{
offset = location == SnapLineLocation.Minimum ? this.defaultPadding : -this.defaultPadding;
return(true);
}
}
else if ((location == SnapLineLocation.Minimum && snapLine.Location == SnapLineLocation.Maximum || location == SnapLineLocation.Maximum && snapLine.Location == SnapLineLocation.Minimum) && (!snapLine.IsContainerLine && snapLine.RangeOverlaps(p1, p2)))
{
offset = snapLine.Location == SnapLineLocation.Minimum ? -this.defaultMargin : this.defaultMargin;
return(true);
}
return(false);
}
private double CheckForCloserSnapLine(Point p1, SnapLineLocation location, double snapThreshold, List <SnapLine> resultSnapLines, double smallestSignedDistance, SnapLine snapLine, double offset)
{
double num1 = snapLine.GetSignedDistance(p1) + offset;
double num2 = Math.Abs(num1);
if (num2 <= snapThreshold)
{
if (num2 < Math.Abs(smallestSignedDistance))
{
smallestSignedDistance = num1;
resultSnapLines.Clear();
}
if (Math.Abs(num1 - smallestSignedDistance) < 1E-06)
{
snapLine.LocationRelativeToTarget = location;
snapLine.OffsetRelativeToTarget = offset;
resultSnapLines.Add(snapLine);
}
}
return(smallestSignedDistance);
}