public void NotChangeDistanceBetweenVectors()
{
var ta = coordinateSystemConverter.Transform(a);
var tb = coordinateSystemConverter.Transform(b);
var delta = new PointF(tb.X - ta.X, tb.Y - ta.Y);
((int)Math.Sqrt(delta.X * delta.X + delta.Y * delta.Y)).Should().Be(a.DistanceTo(b));
}
public void Render(Graphics graphics, TagCloud tagCloud)
{
var transform = new VectorCoordinateSystemConverter(showRectangles ? tagCloud.LayoutCoveringRectangle : tagCloud.TagsCoveringRectangle);
if (showRectangles)
{
foreach (var rectangle in tagCloud.Rectangles)
{
var rectF = transform.Transform(rectangle);
graphics.FillRectangle(new SolidBrush(rectangle.Size.ToColor()), rectF);
graphics.DrawRectangle(new Pen(Color.GreenYellow), rectF.X, rectF.Y, rectF.Width, rectF.Height);
}
}
var rnd = new Random();
foreach (var tag in tagCloud.Tags)
{
var rectF = transform.Transform(tag.Key);
graphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
var goodFont = FindFont(graphics, tag.Value, rectF.Size, new Font(FontFamily.GenericMonospace, 128));
var textBrush = textBrushes[rnd.Next(textBrushes.Count)];
graphics.DrawString(tag.Value, goodFont, textBrush, rectF, stringFormat);
}
}
public static RectangleF Transform(this VectorCoordinateSystemConverter coordinateSystemConverter, Rectangle rectangle)
{
var a = coordinateSystemConverter.Transform(rectangle.LeftTop);
return(new RectangleF(a.X, a.Y, rectangle.Size.Width, rectangle.Size.Height));
}
