89 lines
2.9 KiB
C#
89 lines
2.9 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2015 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System.Drawing;
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using OpenRA.Graphics;
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namespace OpenRA.Mods.Common.Graphics
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{
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public struct DetectionCircleRenderable : IRenderable, IFinalizedRenderable
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{
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readonly WPos centerPosition;
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readonly WDist radius;
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readonly int zOffset;
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readonly int trailCount;
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readonly WAngle trailSeparation;
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readonly WAngle trailAngle;
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readonly Color color;
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readonly Color contrastColor;
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public DetectionCircleRenderable(WPos centerPosition, WDist radius, int zOffset,
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int lineTrails, WAngle trailSeparation, WAngle trailAngle, Color color, Color contrastColor)
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{
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this.centerPosition = centerPosition;
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this.radius = radius;
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this.zOffset = zOffset;
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trailCount = lineTrails;
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this.trailSeparation = trailSeparation;
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this.trailAngle = trailAngle;
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this.color = color;
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this.contrastColor = contrastColor;
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}
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public WPos Pos { get { return centerPosition; } }
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public PaletteReference Palette { get { return null; } }
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public int ZOffset { get { return zOffset; } }
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public bool IsDecoration { get { return true; } }
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public IRenderable WithPalette(PaletteReference newPalette)
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{
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return new DetectionCircleRenderable(centerPosition, radius, zOffset,
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trailCount, trailSeparation, trailAngle, color, contrastColor);
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}
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public IRenderable WithZOffset(int newOffset)
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{
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return new DetectionCircleRenderable(centerPosition, radius, newOffset,
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trailCount, trailSeparation, trailAngle, color, contrastColor);
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}
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public IRenderable OffsetBy(WVec vec)
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{
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return new DetectionCircleRenderable(centerPosition + vec, radius, zOffset,
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trailCount, trailSeparation, trailAngle, color, contrastColor);
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}
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public IRenderable AsDecoration() { return this; }
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public IFinalizedRenderable PrepareRender(WorldRenderer wr) { return this; }
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public void Render(WorldRenderer wr)
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{
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var wcr = Game.Renderer.WorldRgbaColorRenderer;
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var center = wr.ScreenPosition(centerPosition);
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for (var i = 0; i < trailCount; i++)
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{
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var angle = trailAngle - new WAngle(i * (trailSeparation.Angle <= 512 ? 1 : -1));
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var length = radius.Length * new WVec(angle.Cos(), angle.Sin(), 0) / 1024;
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var end = wr.ScreenPosition(centerPosition + length);
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var alpha = color.A - i * color.A / trailCount;
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wcr.DrawLine(center, end, 3, Color.FromArgb(alpha, contrastColor));
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wcr.DrawLine(center, end, 1, Color.FromArgb(alpha, color));
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}
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RangeCircleRenderable.DrawRangeCircle(wr, centerPosition, radius, 1, color, 3, contrastColor);
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}
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public void RenderDebugGeometry(WorldRenderer wr) { }
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public Rectangle ScreenBounds(WorldRenderer wr) { return Rectangle.Empty; }
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}
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}
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