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Chris Jones  
#1 Posted : Monday, June 20, 2016 7:25:06 AM(UTC)
Chris Jones

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Groups: Member
Joined: 6/9/2016(UTC)
Posts: 34

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I've got a Bitmap object that i need to draw onto another bitmap in a user chosen location and size. Currently the image being drawn using the Graphics.DrawImage() method preserves the aspect ratio as far as i can tell.

How can i draw the image stretched to fill the target area?

Thanks

Fedor  
#2 Posted : Monday, June 20, 2016 9:52:50 AM(UTC)
Fedor

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You should transform the coordinate system to draw the image stretched.

Here is an example:

Code:
using Aurigma.GraphicsMill;
using System;

class Program
{
	static void Main(string[] args)
	{
		int x = 70;
		int y = 90;
		float width = 250f;
		float height = 100f;

		using (var bitmap = new Bitmap(400, 300, PixelFormat.Format24bppRgb, RgbColor.White))
		using (var top = new Bitmap("../../../input.jpg"))
		using (var graphics = bitmap.GetAdvancedGraphics())
		{
			var transform = new System.Drawing.Drawing2D.Matrix();
			transform.Translate(x, y);
			transform.Scale(width / (float)(top.Width), height / (float)(top.Height));


			graphics.Transform = transform;

			graphics.DrawImage(top, 0, 0);

			bitmap.Save("../../../sample.jpg");
		}
	}
}
Fedor attached the following image(s):
sample.jpg
Best regards,

Fedor Skvortsov

thanks 1 user thanked Fedor for this useful post.
Chris Jones on 6/21/2016(UTC)
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