/// <summary>
/// Initialize bresenhame path structure for shape moving
/// </summary>
private void InitPath()
{
int middleX = Math.Abs(shape1.X + shape2.X) / 2;
int middleY = Math.Abs(shape1.Y + shape2.Y) / 2;
Point middle = new Point(middleX, middleY);
path1 = new BresenhamApproximation(shape1.X, shape1.Y, middle.x, middle.y).GetEnumerator();
path2 = new BresenhamApproximation(shape2.X, shape2.Y, middle.x, middle.y).GetEnumerator();
}
/// <summary>
/// Draw doted line on render with context cordinate
/// </summary>
/// <param name="x1">First point X position</param>
/// <param name="y1">First point Y position</param>
/// <param name="x2">Second point X position</param>
/// <param name="y2">Second point Y position</param>
public void DrawDotedLine(int x1, int y1, int x2, int y2, int lineSegmentLength = 2)
{
int length = lineSegmentLength;
bool draw = true;
var approximation = new BresenhamApproximation(x1, y1, x2, y2);
foreach (var p in approximation)
{
if (length == 0)
{
draw = !draw;
length = lineSegmentLength;
}
if (draw)
{
DrawPoint(p);
}
length--;
}
}
