76 lines
2.2 KiB
C#
76 lines
2.2 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.Collections.Generic;
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using System.Drawing;
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using OpenRA.Graphics;
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using OpenRA.Mods.Common.Traits;
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using OpenRA.Traits;
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namespace OpenRA.Mods.D2k.Traits
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{
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[Desc("Create a palette by applying a scale and offset to the colors in another palette.")]
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class PaletteFromScaledPaletteInfo : ITraitInfo
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{
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[FieldLoader.Require]
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[Desc("Internal palette name")]
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public readonly string Name = null;
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[FieldLoader.Require]
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[Desc("The name of the palette to base off.")]
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public readonly string BasePalette = null;
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[Desc("Allow palette modifiers to change the palette.")]
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public readonly bool AllowModifiers = true;
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[Desc("Amount to scale the base palette colors by.")]
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public readonly float Scale = 1.0f;
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[Desc("Amount to offset the base palette colors by.")]
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public readonly int Offset = 0;
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public object Create(ActorInitializer init) { return new PaletteFromScaledPalette(this); }
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}
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class PaletteFromScaledPalette : ILoadsPalettes, IProvidesAssetBrowserPalettes
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{
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readonly PaletteFromScaledPaletteInfo info;
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public PaletteFromScaledPalette(PaletteFromScaledPaletteInfo info) { this.info = info; }
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public void LoadPalettes(WorldRenderer wr)
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{
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var remap = new ScaledPaletteRemap(info.Scale, info.Offset);
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wr.AddPalette(info.Name, new ImmutablePalette(wr.Palette(info.BasePalette).Palette, remap), info.AllowModifiers);
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}
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public IEnumerable<string> PaletteNames { get { yield return info.Name; } }
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}
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class ScaledPaletteRemap : IPaletteRemap
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{
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readonly float scale;
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readonly int offset;
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public ScaledPaletteRemap(float scale, int offset)
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{
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this.scale = scale;
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this.offset = offset;
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}
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public Color GetRemappedColor(Color original, int index)
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{
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return Color.FromArgb(original.A,
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(int)(scale * original.R + offset).Clamp(0, 255),
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(int)(scale * original.G + offset).Clamp(0, 255),
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(int)(scale * original.B + offset).Clamp(0, 255));
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}
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}
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}
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