private Vector2 GetCenterPoint(IVerticalEdge vertical)
{
double topY, bottomY,
centerX = vertical.XPosition;
var vertex = vertical.Vertex;
bool isLowerExtension = vertical.IsLowerExtension;
if (isLowerExtension)
{
topY = vertex.Position.Y;
var bottom = vertical.LeftTrapezoid.BottomSegment;
Debug.Assert(vertical.RightTrapezoid.BottomSegment == bottom);
if (bottom == null)
{
bottomY = trapezoidalMap.BoundingBox.Bottom;
}
else
{
bottomY = GetYComponent(bottom, centerX);
}
}
else
{
bottomY = vertex.Position.Y;
var top = vertical.LeftTrapezoid.TopSegment;
Debug.Assert(vertical.RightTrapezoid.TopSegment == top);
if (top == null)
{
topY = trapezoidalMap.BoundingBox.Top;
}
else
{
topY = GetYComponent(top, centerX);
}
}
var centerY = (topY + bottomY) / 2;
return(new Vector2(centerX, centerY));
}
private Vector2 GetCenterPoint(IVerticalEdge vertical)
{
double topY, bottomY,
centerX = vertical.XPosition;
var vertex = vertical.Vertex;
bool isLowerExtension = vertical.IsLowerExtension;
if (isLowerExtension)
{
topY = vertex.Position.Y;
var bottom = vertical.LeftTrapezoid.BottomSegment;
Debug.Assert(vertical.RightTrapezoid.BottomSegment == bottom);
if (bottom == null)
bottomY = trapezoidalMap.BoundingBox.Bottom;
else
bottomY = GetYComponent(bottom, centerX);
}
else
{
bottomY = vertex.Position.Y;
var top = vertical.LeftTrapezoid.TopSegment;
Debug.Assert(vertical.RightTrapezoid.TopSegment == top);
if (top == null)
topY = trapezoidalMap.BoundingBox.Top;
else
topY = GetYComponent(top, centerX);
}
var centerY = (topY + bottomY) / 2;
return new Vector2(centerX, centerY);
}