/// <summary>Paint the intermediate layer of the display, graphics that changes infrequently between refreshes.</summary>
/// <param name="this">Type: MapDisplay{THex} - The map to be painted.</param>
/// <param name="graphics">Type: Graphics - Object representing the canvas being painted.</param>
public static void PaintUnits <THex>(this MapDisplay <THex> @this, Graphics graphics) where THex : MapGridHex
{
if (@this == null)
{
throw new ArgumentNullException("this");
}
if (graphics == null)
{
throw new ArgumentNullException("graphics");
}
/* NO-OP - Not implemented in examples. */
}
/// <summary>Paint the destination indicator for the current shortest path.</summary>
/// <param name="this">Type: MapDisplay{THex} - The map to be painted.</param>
/// <param name="graphics">Type: Graphics - Object representing the canvas being painted.</param>
/// <remarks>The current graphics origin must be the centre of the current hex.</remarks>
static void PaintPathDestination <THex>(this MapDisplay <THex> @this, Graphics graphics
) where THex : MapGridHex
{
if (graphics == null)
{
throw new ArgumentNullException("graphics");
}
var unit = @this.GridSize.Height / 8.0F;
graphics.DrawLine(Pens.Black, -unit * 2, -unit * 2, unit * 2, unit * 2);
graphics.DrawLine(Pens.Black, -unit * 2, unit * 2, unit * 2, -unit * 2);
}
/// <summary>Paints all the hexes in <paramref name="clipHexes"/> by executing <paramref name="paintAction"/>
/// for each hex on <paramref name="graphics"/>.</summary>
/// <param name="this">Type: MapDisplay{THex} - The map to be painted.</param>
/// <param name="graphics">Graphics object for the canvas being painted.</param>
/// <param name="clipHexes">Type: CoordRectangle -
/// The rectangular extent of hexes to be painted.</param>
/// <param name="paintAction">Type: Action {HexCoords} -
/// The paint action to be performed for each hex.</param>
public static void PaintForEachHex <THex>(this MapDisplay <THex> @this, Graphics graphics,
CoordsRectangle clipHexes, Action <HexCoords> paintAction
) where THex : MapGridHex
{
@this.ForEachHex(hex => {
if (clipHexes.Left <= hex.Coords.User.X && hex.Coords.User.X <= clipHexes.Right &&
clipHexes.Top <= hex.Coords.User.Y && hex.Coords.User.Y <= clipHexes.Bottom)
{
graphics.Transform = @this.TranslateToHex(hex.Coords);
paintAction(hex.Coords);
}
});
return;
}
/// <summary>Paint the direction arrow for each hex of the current shortest path.</summary>
/// <param name="this">Type: MapDisplay{THex} - The map to be painted.</param>
/// <param name="graphics">Type: Graphics - Object representing the canvas being painted.</param>
/// <param name="hexside">Type: <see cref="Hexside"/> -
/// Direction from this hex in which the next step is made.</param>
/// <remarks>The current graphics origin must be the centre of the current hex.</remarks>
static void PaintPathArrow <THex>(this MapDisplay <THex> @this, Graphics graphics, Hexside hexside
) where THex : MapGridHex
{
if (graphics == null)
{
throw new ArgumentNullException("graphics");
}
var unit = @this.GridSize.Height / 8.0F;
graphics.RotateTransform(60 * (int)hexside);
graphics.DrawLine(Pens.Black, 0, unit * 4, 0, -unit);
graphics.DrawLine(Pens.Black, 0, unit * 4, -unit * 3 / 2, unit * 2);
graphics.DrawLine(Pens.Black, 0, unit * 4, unit * 3 / 2, unit * 2);
}
/// <summary>Paint the direction and destination indicators for each hex of the current shortest path.</summary>
/// <param name="this">Type: MapDisplay{THex} - The map to be painted.</param>
/// <param name="graphics">Type: Graphics - Object representing the canvas being painted.</param>
/// <param name="path">Type: <see cref="IDirectedPathCollection"/> -
/// A directed path (ie linked-list> of hexes to be highlighted with a direction arrow.</param>
static void PaintPathArrow <THex>(this MapDisplay <THex> @this, Graphics graphics, IDirectedPathCollection path
) where THex : MapGridHex
{
if (graphics == null)
{
throw new ArgumentNullException("graphics");
}
if (path == null)
{
throw new ArgumentNullException("path");
}
graphics.TranslateTransform(@this.CentreOfHexOffset.Width, @this.CentreOfHexOffset.Height);
if (path.PathSoFar == null)
{
@this.PaintPathDestination(graphics);
}
else
{
@this.PaintPathArrow(graphics, path.PathStep.HexsideEntry);
}
}
/// <summary>Paint the current shortese path.</summary>
/// <param name="this">Type: MapDisplay{THex} - The map to be painted.</param>
/// <param name="graphics">Type: Graphics - Object representing the canvas being painted.</param>
/// <param name="path">Type: <see cref="IDirectedPathCollection"/> -
/// A directed path (ie linked-list> of hexes to be painted.</param>
public static void PaintPath <THex>(this MapDisplay <THex> @this, Graphics graphics, IDirectedPathCollection path
) where THex : MapGridHex
{
if (graphics == null)
{
throw new ArgumentNullException("graphics");
}
using (var brush = new SolidBrush(Color.FromArgb(78, Color.PaleGoldenrod))) {
while (path != null)
{
var coords = path.PathStep.Hex.Coords;
graphics.Transform = @this.TranslateToHex(coords);
graphics.FillPath(brush, @this.HexgridPath);
if (@this.ShowPathArrow)
{
@this.PaintPathArrow(graphics, path);
}
path = path.PathSoFar;
}
}
}
public static void PaintShading <THex>(this MapDisplay <THex> @this, Graphics graphics
) where THex : MapGridHex
{
if (graphics == null)
{
throw new ArgumentNullException("graphics");
}
var container = graphics.BeginContainer();
if (@this.ShowFov)
{
var clipHexes = @this.GetClipInHexes(graphics.VisibleClipBounds);
using (var shadeBrush = new SolidBrush(Color.FromArgb(@this.ShadeBrushAlpha, @this.ShadeBrushColor))) {
@this.PaintForEachHex(graphics, clipHexes, coords => {
if (@this.Fov != null && [email protected][coords])
{
graphics.FillPath(shadeBrush, @this.HexgridPath);
}
});
}
}
graphics.EndContainer(container);
}
