mirror of
https://git.do.srb2.org/STJr/UltimateZoneBuilder.git
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116 lines
2.8 KiB
C#
116 lines
2.8 KiB
C#
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#region ================== Copyright (c) 2007 Pascal vd Heiden
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/*
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* Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
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* This program is released under GNU General Public License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#endregion
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#region ================== Namespaces
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Text;
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using System.IO;
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using CodeImp.DoomBuilder.Map;
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using CodeImp.DoomBuilder.Geometry;
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using System.Drawing;
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using CodeImp.DoomBuilder.Data;
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using CodeImp.DoomBuilder.Rendering;
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using System.Drawing.Imaging;
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#endregion
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namespace CodeImp.DoomBuilder.IO
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{
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internal unsafe class FileImageReader : IImageReader
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{
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#region ================== Constructor / Disposer
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// Constructor
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public FileImageReader()
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{
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// We have no destructor
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GC.SuppressFinalize(this);
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}
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#endregion
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#region ================== Methods
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// This reads the image and returns a Bitmap
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public Bitmap ReadAsBitmap(Stream stream)
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{
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try
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{
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return (Bitmap)Bitmap.FromStream(stream);
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}
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catch(Exception e)
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{
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// Unable to make bitmap
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General.WriteLogLine("ERROR: Unable to make file image. " + e.GetType().Name + ": " + e.Message);
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return null;
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}
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}
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// This draws the picture to the given pixel color data
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// Throws exception on failure
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public unsafe void DrawToPixelData(Stream stream, PixelColor* target, int targetwidth, int targetheight, int x, int y)
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{
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Bitmap bmp;
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BitmapData bmpdata;
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PixelColor* pixels;
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int ox, oy, tx, ty;
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int width, height;
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// Get bitmap
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bmp = ReadAsBitmap(stream);
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if(bmp != null)
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{
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width = bmp.Size.Width;
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height = bmp.Size.Height;
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// Lock bitmap pixels
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bmpdata = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
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pixels = (PixelColor*)bmpdata.Scan0.ToPointer();
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// Go for all pixels in the original image
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for(ox = 0; ox < width; ox++)
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{
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for(oy = 0; oy < height; oy++)
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{
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// Copy this pixel?
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if(pixels[oy * width + ox].a > 0.5f)
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{
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// Calculate target pixel and copy when within bounds
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tx = x + ox;
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ty = y + oy;
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if((tx >= 0) && (tx < targetwidth) && (ty >= 0) && (ty < targetheight))
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target[ty * targetwidth + tx] = pixels[oy * width + ox];
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}
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}
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}
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// Done
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bmp.UnlockBits(bmpdata);
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bmp.Dispose();
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}
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else
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{
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throw new InvalidDataException();
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}
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}
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#endregion
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}
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}
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