/// <summary>
/// Draws all decoration except arrows on all map sites in the specified region.</summary>
/// <param name="context">
/// The <see cref="DrawingContext"/> for the drawing.</param>
/// <param name="siteRegion">
/// The map region containing the coordinates of every <see cref="Site"/> to decorate.
/// </param>
/// <remarks>
/// <b>DrawDecoration</b> draws grid outlines, selection highlights, owner shading, unit
/// flags, resource gauges, and variable values on every <see cref="Site"/> within the
/// specified <paramref name="siteRegion"/>, as appropriate.</remarks>
private void DrawDecoration(DrawingContext context, RectI siteRegion)
{
var sites = MapView.WorldState.Sites;
var geometry = MapView.ElementGeometry;
// traverse all specified sites
for (int x = siteRegion.Left; x < siteRegion.Right; x++)
{
for (int y = siteRegion.Top; y < siteRegion.Bottom; y++)
{
Site site = sites[x, y];
// shift origin to center of current site
PointD pixel = MapView.SiteToView(site.Location);
context.PushTransform(new TranslateTransform(pixel.X, pixel.Y));
// brighten polygon in selected region
if (MapView.SelectedRegion != null && MapView.SelectedRegion[x, y])
{
context.DrawGeometry(MediaObjects.ShadeLightBrush, null, geometry);
}
// tint polygon with owner color
if (MapView.ShowOwner)
{
Color color = (site.Owner == null ? Colors.Black : site.Owner.Color);
context.DrawGeometry(MediaObjects.GetShadeBrush(color), null, geometry);
}
// draw unit flag near unit stack
if (MapView.ShowFlags)
{
UnitDecorator.DrawFlag(context, site);
}
// draw resource gauge below unit stack
if (MapView.GaugeResource != null)
{
UnitDecorator.DrawGauge(context, site);
}
// draw variable values as numbers or shades
if (MapView.ShownVariable != null && MapView.ShownVariableFlags != 0)
{
VariableDrawer.Draw(context, site);
}
// reset transformation matrix
context.Pop();
}
}
// draw polygon outlines for entire grid
if (!this._bitmapGrid && MapView.ShowGrid)
{
context.DrawGeometry(null, MediaObjects.ThickPen, MapView.GridGeometry);
}
}
/// <summary>
/// Draws a resource gauge on the specified <see cref="Site"/>.</summary>
/// <param name="context">
/// The <see cref="DrawingContext"/> for the drawing.</param>
/// <param name="site">
/// The <see cref="Site"/> to receive the resource gauge.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="context"/> is a null reference.</exception>
/// <remarks>
/// The origin of the specified <paramref name="context"/> must have been centered on the
/// specified <paramref name="site"/>.</remarks>
public void DrawGauge(DrawingContext context, Site site)
{
if (context == null)
{
ThrowHelper.ThrowArgumentNullException("context");
}
var units = site.Units;
int count = units.Count;
if (count == 0)
{
return;
}
// initialize geometric data if changed
MapView mapView = this._renderer.MapView;
RegularPolygon polygon = mapView.MapGrid.Element;
if (polygon != this._polygon)
{
Initialize(polygon);
}
// quit if gauge invisible
if (this._gaugeBox.Width == 0.0)
{
return;
}
// get current resource and display flags
string resource = mapView.GaugeResource;
if (String.IsNullOrEmpty(resource))
{
return;
}
GaugeDisplay flags = mapView.GaugeResourceFlags;
int min = 0, max = 0, value = 0;
// traverse unit stack from top to bottom
for (int i = count - 1; i >= 0; i--)
{
Unit unit = (Unit)units[i];
string id = resource;
// map standard pseudo-resources to actual unit resources
if (id == ResourceClass.StandardStrength.Id)
{
id = unit.UnitClass.StrengthResource;
}
else if (id == ResourceClass.StandardMorale.Id)
{
id = unit.UnitClass.MoraleResource;
}
// get resource values if valid and present
if (!String.IsNullOrEmpty(id))
{
Variable variable = null;
if (unit.Resources.Variables.TryGetValue(id, out variable))
{
min += variable.Minimum;
max += variable.Maximum;
value += variable.Value;
}
}
// stop after topmost unit unless showing stack
if ((flags & GaugeDisplay.Stack) == 0)
{
break;
}
}
// quit if no valid resource found
if (min == max)
{
return;
}
// show resource if depleted or always shown
if (value < max || (flags & GaugeDisplay.Always) != 0)
{
var brush = MediaObjects.GetBrush(MediaObjects.DangerBrushes, value, min, max);
context.DrawRectangle(brush, MediaObjects.ThinPen, this._gaugeBox);
}
}
/// <summary>
/// Draws a unit flag on the specified <see cref="Site"/>.</summary>
/// <param name="context">
/// The <see cref="DrawingContext"/> for the drawing.</param>
/// <param name="site">
/// The <see cref="Site"/> to receive the unit flag.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="context"/> is a null reference.</exception>
/// <remarks>
/// The origin of the specified <paramref name="context"/> must have been centered on the
/// specified <paramref name="site"/>.</remarks>
public void DrawFlag(DrawingContext context, Site site)
{
if (context == null)
{
ThrowHelper.ThrowArgumentNullException("context");
}
var units = site.Units;
int count = units.Count;
if (count == 0)
{
return;
}
// initialize geometric data if changed
MapView mapView = this._renderer.MapView;
RegularPolygon polygon = mapView.MapGrid.Element;
if (polygon != this._polygon)
{
Initialize(polygon);
}
// retrieve flag color for unit owner
Faction owner = units[0].Owner;
var brush = MediaObjects.GetOpaqueBrush(owner.Color);
// use ivory instead if active units present
if (!ApplicationInfo.IsEditor && owner == mapView.WorldState.ActiveFaction)
{
for (int i = 0; i < count; i++)
{
if (((Unit)units[i]).CanMove)
{
brush = Brushes.Ivory;
break;
}
}
}
// draw flag rectangle
context.DrawRectangle(brush, MediaObjects.ThinPen, this._flagBox);
if (count == 1)
{
// one unit: single dot
DrawFlagDot(context, HorizontalAlignment.Center, 1);
}
else if (count == 2)
{
// two units: two dots
DrawFlagDot(context, HorizontalAlignment.Left, 2);
DrawFlagDot(context, HorizontalAlignment.Right, 2);
}
else if (count == 3)
{
// three units: three dots
DrawFlagDot(context, HorizontalAlignment.Left, 3);
DrawFlagDot(context, HorizontalAlignment.Center, 3);
DrawFlagDot(context, HorizontalAlignment.Right, 3);
}
else if (count >= 16)
{
// 16+ entities: diagonal cross
DrawFlagCross(context);
}
else if (count >= 12)
{
// 12-15 units: three bars
DrawFlagBar(context, HorizontalAlignment.Left, 3);
DrawFlagBar(context, HorizontalAlignment.Center, 3);
DrawFlagBar(context, HorizontalAlignment.Right, 3);
}
else if (count >= 8)
{
// 8-11 units: two bars
DrawFlagBar(context, HorizontalAlignment.Left, 2);
DrawFlagBar(context, HorizontalAlignment.Right, 2);
}
else if (count >= 4)
{
// 4-7 units: one bar
DrawFlagBar(context, HorizontalAlignment.Center, 1);
}
}
