How to Composite with mask.gif ?

[liuhaitao827]

Hello,
As ImageMagick doc, Composite option can work with one Mask image, please refer to the sample below,

_composite tile_water.jpg tile_aqua.jpg moon_mask.gif mask_over.jpg_

Could you let me know how to do it in MagicK.NET? Thank you!

---------------more infomation-----------------
the mask works in following sample,

using (MagickImage mask = new MagickImage(MagickColors.White, 100, 100))
                {                    
                    var draw = new Drawables();
                    draw.Circle(50, 50, 50, 100).FillColor(MagickColors.Black).Draw(mask);
                    mask.ColorSpace = ColorSpace.Gray;                    
                    manImage.SetWriteMask(mask);                    
                    manImage.Composite(eyeImage,0,0);
                    manImage.Write("c:\\images\\man1.jpg");
                }

But, Mask doesn't work in following snippet,

               manImage.Composite(eyeImage,100,100);

Seems Mask work in (0, 0) position only, any advice?? thank you!

[dlemstra]

I think you will need to use the following code. The composite command does some magic when there are 3 images involved.

using (var clone = tile_water.Clone())
{
    tile_water.Composite(tile_aqua, CompositeOperator.Undefined);
    tile_water.Composite(moon_mask, CompositeOperator.CopyAlpha);

    clone.Composite(tile_water, CompositeOperator.Over);

    clone.Write("mask_over.jpg");
}

[liuhaitao827]

thank you for the answer!