122 lines
3.3 KiB
C#
122 lines
3.3 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2010 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 LICENSE.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using OpenRA.FileFormats.Graphics;
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namespace OpenRA.Graphics
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{
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public static class Util
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{
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public static string[] ReadAllLines(Stream s)
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{
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List<string> result = new List<string>();
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using (StreamReader reader = new StreamReader(s))
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while(!reader.EndOfStream)
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{
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var line = reader.ReadLine();
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if( !string.IsNullOrEmpty( line ) && line[0] != '#' )
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result.Add( line );
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}
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return result.ToArray();
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}
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public static T[] MakeArray<T>(int count, Converter<int, T> f)
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{
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T[] result = new T[count];
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for (int i = 0; i < count; i++)
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result[i] = f(i);
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return result;
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}
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static float[] channelSelect = { 0.75f, 0.25f, -0.25f, -0.75f };
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public static void FastCreateQuad(Vertex[] vertices, ushort[] indices, float2 o, Sprite r, int palette, int nv, int ni, float2 size)
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{
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var attrib = new float2(palette / (float)HardwarePalette.MaxPalettes, channelSelect[(int)r.channel]);
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vertices[nv] = new Vertex(o,
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r.FastMapTextureCoords(0), attrib);
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vertices[nv + 1] = new Vertex(new float2(o.X + size.X, o.Y),
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r.FastMapTextureCoords(1), attrib);
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vertices[nv + 2] = new Vertex(new float2(o.X, o.Y + size.Y),
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r.FastMapTextureCoords(2), attrib);
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vertices[nv + 3] = new Vertex(new float2(o.X + size.X, o.Y + size.Y),
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r.FastMapTextureCoords(3), attrib);
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indices[ni] = (ushort)(nv);
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indices[ni + 1] = indices[ni + 3] = (ushort)(nv + 1);
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indices[ni + 2] = indices[ni + 5] = (ushort)(nv + 2);
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indices[ni + 4] = (ushort)(nv + 3);
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}
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public static void FastCopyIntoChannel(Sprite dest, byte[] src)
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{
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var bitmap = dest.sheet.Bitmap;
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BitmapData bits = null;
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uint[] channelMasks = { 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000 };
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int[] shifts = { 16, 8, 0, 24 };
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uint mask = channelMasks[(int)dest.channel];
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int shift = shifts[(int)dest.channel];
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try
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{
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bits = bitmap.LockBits(dest.bounds, ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
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int width = dest.bounds.Width;
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int height = dest.bounds.Height;
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unsafe
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{
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fixed (byte* srcbase = &src[0])
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{
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byte* s = srcbase;
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uint* t = (uint*)bits.Scan0.ToPointer();
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int stride = bits.Stride >> 2;
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for (int j = 0; j < height; j++)
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{
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uint* p = t;
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for (int i = 0; i < width; i++, p++)
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*p = (*p & ~mask) | ((mask & ((uint)*s++) << shift));
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t += stride;
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}
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}
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}
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}
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finally
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{
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bitmap.UnlockBits(bits);
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}
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}
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public static Color Lerp(float t, Color a, Color b)
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{
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return Color.FromArgb(
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LerpChannel(t, a.A, b.A),
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LerpChannel(t, a.R, b.R),
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LerpChannel(t, a.G, b.G),
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LerpChannel(t, a.B, b.B));
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}
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public static int LerpChannel(float t, int a, int b)
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{
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return (int)((1 - t) * a + t * b);
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}
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}
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}
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