Add (Polygon|Circle|Line)AnnotationRenderable.

OpenRA.Mods.Common/Graphics/PolygonAnnotationRenderable.cs

@@ -0,0 +1,53 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Linq;
+using OpenRA.Graphics;
+using OpenRA.Primitives;
+
+namespace OpenRA.Mods.Common.Graphics
+{
+	public struct PolygonAnnotationRenderable : IRenderable, IFinalizedRenderable
+	{
+		readonly WPos[] vertices;
+		readonly WPos effectivePos;
+		readonly int width;
+		readonly Color color;
+
+		public PolygonAnnotationRenderable(WPos[] vertices, WPos effectivePos, int width, Color color)
+		{
+			this.vertices = vertices;
+			this.effectivePos = effectivePos;
+			this.width = width;
+			this.color = color;
+		}
+
+		public WPos Pos { get { return effectivePos; } }
+		public PaletteReference Palette { get { return null; } }
+		public int ZOffset { get { return 0; } }
+		public bool IsDecoration { get { return true; } }
+
+		public IRenderable WithPalette(PaletteReference newPalette) { return new PolygonAnnotationRenderable(vertices, effectivePos, width, color); }
+		public IRenderable WithZOffset(int newOffset) { return new PolygonAnnotationRenderable(vertices, effectivePos, width, color); }
+		public IRenderable OffsetBy(WVec vec) { return new PolygonAnnotationRenderable(vertices.Select(v => v + vec).ToArray(), effectivePos + vec, width, color); }
+		public IRenderable AsDecoration() { return this; }
+
+		public IFinalizedRenderable PrepareRender(WorldRenderer wr) { return this; }
+		public void Render(WorldRenderer wr)
+		{
+			var verts = vertices.Select(wr.Screen3DPosition).ToArray();
+			Game.Renderer.WorldRgbaColorRenderer.DrawPolygon(verts, width / wr.Viewport.Zoom, color);
+		}
+
+		public void RenderDebugGeometry(WorldRenderer wr) { }
+		public Rectangle ScreenBounds(WorldRenderer wr) { return Rectangle.Empty; }
+	}
+}