891158ca44
This removes unnecessary checks from TerrainRenderer and will be used in the voxel renderer.
104 lines
2.5 KiB
C#
104 lines
2.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2011 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;
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using System.Drawing;
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namespace OpenRA.Graphics
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{
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public class SheetOverflowException : Exception
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{
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public SheetOverflowException()
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: base("Sprite sequence spans multiple sheets.\n"+
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"This should be considered as a bug, but you "+
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"can increase the Graphics.SheetSize setting "+
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"to temporarily avoid the problem.") {}
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}
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public class SheetBuilder
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{
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Sheet current;
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int rowHeight = 0;
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Point p;
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TextureChannel channel;
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Sheet NewSheet() { return new Sheet(new Size(Renderer.SheetSize, Renderer.SheetSize)); }
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internal SheetBuilder(TextureChannel ch)
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{
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current = NewSheet();
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channel = ch;
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}
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public Sprite Add(byte[] src, Size size, bool allowSheetOverflow)
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{
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Sprite rect = Allocate(size, allowSheetOverflow);
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Util.FastCopyIntoChannel(rect, src);
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return rect;
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}
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public Sprite Add(Size size, byte paletteIndex, bool allowSheetOverflow)
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{
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byte[] data = new byte[size.Width * size.Height];
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for (int i = 0; i < data.Length; i++)
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data[i] = paletteIndex;
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return Add(data, size, allowSheetOverflow);
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}
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TextureChannel? NextChannel(TextureChannel t)
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{
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switch (t)
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{
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case TextureChannel.Red: return TextureChannel.Green;
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case TextureChannel.Green: return TextureChannel.Blue;
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case TextureChannel.Blue: return TextureChannel.Alpha;
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case TextureChannel.Alpha:
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default: return null;
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}
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}
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public Sprite Allocate(Size imageSize, bool allowSheetOverflow)
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{
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if (imageSize.Width + p.X > current.Size.Width)
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{
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p = new Point(0, p.Y + rowHeight);
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rowHeight = imageSize.Height;
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}
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if (imageSize.Height > rowHeight)
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rowHeight = imageSize.Height;
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if (p.Y + imageSize.Height > current.Size.Height)
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{
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var next = NextChannel(channel);
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if (next == null)
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{
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if (!allowSheetOverflow)
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throw new SheetOverflowException();
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current = new Sheet(new Size(Renderer.SheetSize, Renderer.SheetSize));
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channel = TextureChannel.Red;
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}
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else
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channel = next.Value;
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rowHeight = imageSize.Height;
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p = new Point(0,0);
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}
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Sprite rect = new Sprite(current, new Rectangle(p, imageSize), channel);
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current.MakeDirty();
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p.X += imageSize.Width;
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return rect;
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}
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}
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}
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