private void NewMark(HashSet <Mark> marks, HashSet <FigureBBox> bBoxes, FigureBBox overBBox, DoMarksProperties props, double sx, double sy, int directionX, int directionY)
{
if (PointOutside(overBBox, sx, sy, props))
{
return;
}
var height = props.MarkHeight;
do
{
var ex = directionX * height + sx;
var ey = directionY * height + sy;
if (PointInside(bBoxes, ex, ey))
{
if (props.CanDecrease)
{
height -= decrement;
}
else
{
break;
}
}
else
{
marks.Add(new Mark(new Point(sx, sy), new Point(ex, ey)));
break;
}
} while (height > 0);
}
public void DoSmartTrimMarks(DoMarksProperties props, ShapeRange sr)
{
HashSet <FigureBBox> figureBBoxes = GetFigureBBoxes(sr, props);
FigureBBox overBBox = GetOverlapBBox(figureBBoxes);
HashSet <Mark> marks = LayoutMarks(figureBBoxes, overBBox, props);
DrawMarks(marks, props);
}
private HashSet <Mark> LayoutMarks(HashSet <FigureBBox> bBoxes, FigureBBox overBBox, DoMarksProperties props)
{
var marks = new HashSet <Mark>();
foreach (var bbox in bBoxes)
{
NewMark(marks, bBoxes, overBBox, props, bbox.X, bbox.Top - props.Offset, -1, 0);
NewMark(marks, bBoxes, overBBox, props, bbox.X, bbox.Y + props.Offset, -1, 0);
NewMark(marks, bBoxes, overBBox, props, bbox.X + props.Offset, bbox.Y, 0, -1);
NewMark(marks, bBoxes, overBBox, props, bbox.Right - props.Offset, bbox.Y, 0, -1);
NewMark(marks, bBoxes, overBBox, props, bbox.Right, bbox.Y + props.Offset, 1, 0);
NewMark(marks, bBoxes, overBBox, props, bbox.Right, bbox.Top - props.Offset, 1, 0);
NewMark(marks, bBoxes, overBBox, props, bbox.Right - props.Offset, bbox.Top, 0, 1);
NewMark(marks, bBoxes, overBBox, props, bbox.X + props.Offset, bbox.Top, 0, 1);
}
return(marks);
}
private bool PointOutside(FigureBBox box, double x, double y, DoMarksProperties props)
{
if (props.ExcludeLeftEdge && x < box.X + safeZone)
{
return(true);
}
if (props.ExcludeRightEdge && x > box.Right - safeZone)
{
return(true);
}
if (props.ExcludeTopEdge && y > box.Top - safeZone)
{
return(true);
}
if (props.ExcludeBottomEdge && y < box.Y + safeZone)
{
return(true);
}
return(false);
}