MontageSettings

[whugemann]

I already had a look at #1301 but there are some questions left.
I am trying to reproduce

Magick montage -size 100x100 xc:red -size 120x120 xc:green -size 100x100 xc:blue -size 100x100 xc:black -tile 2x2 -geometry +10+10 mon.png

with Magick.NET. (Look out that the 2nd image is somewhat larger.) After some testing, I arrived at

using ImageMagick;
using var images = new MagickImageCollection();
  
images.Add(new MagickImage(MagickColors.Red, 100, 100));
images.Add(new MagickImage(MagickColors.Green, 120, 120));
images.Add(new MagickImage(MagickColors.Blue, 100, 100));
images.Add(new MagickImage(MagickColors.Black, 100, 100));
var montageSettings = new MontageSettings()
   {
      BackgroundColor = MagickColors.White,
      Geometry = new MagickGeometry($"{images[0].Width}x{images[0].Height}+10+10"),
      TileGeometry = new MagickGeometry("2x2")
};

   using (var result = images.Montage(montageSettings))
   {
      result.Write(@"C:\tmp\__Gutachten\wmpr2\mon2.png");
   }

In contrast to the command-line version, I had to specify the image extension; "+10+10" did not do what I intended.
This rises two questions:
1: Is there an exact correspondence to "+10+10" ?
2: If not: Is there an easy way to determine the largest dimensions in an ImageCollection, i.e. something like MaxWidth / MaxHeight?

[dlemstra]

It looks like you might have found a bug. The +10+10 is translated to to 0x0+10+10 and that is probably causing your problem here. I will need to check what to do here instead.

There is no method to get the max width or height in a collection but you can do something like this with linq: var maxWidth = images.Max(image => image.Width);

[dlemstra]

I just pushed a patch to resolve this problem in the next release.