private Pen GetPenForRiver(HexConnection riverSection)
{
int riverWidth;
Color color;
switch (riverSection.Type)
{
case 0:
color = Color.Blue;
riverWidth = 1;
break;
case 1:
color = Color.Blue;
riverWidth = 3;
break;
case 2:
color = Color.Blue;
riverWidth = 5;
break;
default:
color = Color.DodgerBlue;
riverWidth = 1;
break;
}
return(new Pen(color, riverWidth));
}
private void DrawSection(Graphics graphics, HexConnection riverSection, Rectangle pictureLocationAndSize)
{
var points = HexConnectionPointsFor(riverSection);
var pen = GetPenForRiver(riverSection);
var from = new Point(pictureLocationAndSize.X + points[0], pictureLocationAndSize.Y + points[1]);
var to = new Point(pictureLocationAndSize.X + points[2], pictureLocationAndSize.Y + points[3]);
graphics.DrawLine(pen, from, to);
}
private int[] HexConnectionPointsFor(HexConnection hexConnection)
{
//Same offset for all river hexes
Point offset = new Point(-10, 0);
int midPointX = TileConfigInterface.HexWidth / 2 + offset.X;
int midPointY = TileConfigInterface.HexHeight / 2 + offset.Y;
int edgeX;
int edgeY;
double angle;
switch (hexConnection.ToEdge)
{
case Direction.North:
angle = Math.PI * 180 / 180;
break;
case Direction.NorthEast:
angle = Math.PI * 120 / 180;
break;
case Direction.SouthEast:
angle = Math.PI * 60 / 180;
break;
case Direction.South:
angle = Math.PI * 0 / 180;
break;
case Direction.SouthWest:
angle = Math.PI * 300 / 180;
break;
case Direction.NorthWest:
angle = Math.PI * 240 / 180;
break;
default:
angle = 0;
break;
}
var sin = Math.Sin(angle);
var cos = Math.Cos(angle);
edgeX = (int)(midPointX + sin * 30); //30 is the length of the river piece
edgeY = (int)(midPointY + cos * 30); //it is longer than we need, but the precise value (22) leaves gaps
var points = new int[] { midPointX, midPointY, edgeX, edgeY };
return(points);
}
