0
0
Fork 0
mirror of https://git.do.srb2.org/STJr/UltimateZoneBuilder.git synced 2024-12-22 01:50:50 +00:00
UltimateZoneBuilder/Source/Core/IO/FileImageReader.cs

125 lines
3.1 KiB
C#

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