public void Draw(Graphics g, Point location, Size mapSize)
{
var imageTip = Tip.Scale(mapSize).Translate(location).ToPoint();
var imageEnd = End.Scale(mapSize).Translate(location).ToPoint();
// shorten the arrow on one side so it doesn't overlap with the planet
if (IsArrow && !IsColonyLink) {
Shorten(imageEnd, ref imageTip);
}
using (var brush = new LinearGradientBrush(imageTip, imageEnd, TipColor, EndColor))
//using (var brush = new SolidBrush(Color.Red))
using (var pen = new Pen(brush, LineWidth*mapSize.Width)) {
CustomLineCap cap;
if (IsArrow) {
if (IsColonyLink) {
pen.CustomEndCap = PenCapProvider.GetInheritanceRepresentation();
g.DrawLines(pen, new[] { imageTip, imageEnd });
} else {
cap = new AdjustableArrowCap(10, 12);
pen.CustomStartCap = cap;
g.DrawLines(pen, new[] { imageTip, imageEnd });
cap.Dispose();
}
} else {
g.DrawLines(pen, new[] { imageTip, imageEnd });
}
}
}
private void drawArrow(Graphics g, int x, int y, int x2, int y2)
{
Pen p = new Pen(Color.Black, 2);//此处设置颜色和宽度
AdjustableArrowCap aac = new AdjustableArrowCap(5, 5);
//p.CustomStartCap = aac;
p.CustomEndCap = aac;
g.DrawLine(p, x, y, x2, y2);
p.Dispose();
aac.Dispose();
}
