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//
// hering.cs
// Creates image for Hering illusion.
// Converted to C# from Xr demo application.
//
// Author:
// Alexandre Pigolkine(pigolkine@gmx.de)
//
//
// Copyright (C) Ximian, Inc. http://www.ximian.com
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
namespace MonoSamples.System.Drawing
{
public class Hering
{
public static void Main (String[] args) {
float width = 400.0F;
float height = 800.0F;
Bitmap bmp = new Bitmap ((int) width, (int) height);
Graphics gr = Graphics.FromImage (bmp);
gr.Clear (Color.White);
int LINES = 32;
float MAX_THETA = (.80F * 90.0F);
float THETA = (2 * MAX_THETA / (LINES-1));
GraphicsState oldState = gr.Save ();
Pen blackPen = new Pen (Color.Black, 2.0F);
gr.TranslateTransform (width / 2.0F, height / 2.0F);
gr.RotateTransform (MAX_THETA);
for ( int i = 0; i < LINES; i++) {
gr.DrawLine (blackPen, -2.0F * width, 0.0F, 2.0F * width, 0.0F);
gr.RotateTransform (-THETA);
}
gr.Restore (oldState);
Pen redPen = new Pen (Color.Red, 6F);
gr.DrawLine (redPen, width / 4F, 0F, width / 4F, height);
gr.DrawLine (redPen, 3F * width / 4F, 0F, 3F * width / 4F, height);
/* save image in all the formats */
bmp.Save ("hering.png", ImageFormat.Png);
Console.WriteLine ("output file hering.png");
bmp.Save ("hering.jpg", ImageFormat.Jpeg);
Console.WriteLine ("output file hering.jpg");
bmp.Save ("hering.bmp", ImageFormat.Bmp);
Console.WriteLine ("output file hering.bmp");
}
}
}
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