02-06-2021, 09:08 AM
(This post was last modified: 02-06-2021, 10:24 AM by rich2005.
Edit Reason: added edit.
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Quote:I am trying to add an arrow pointer onto a picture (and plan to do a lot). I have added a png of the arrow, which I know has a transparent background, to a second layer. I have tried to set it up as a mask, but dont understand the finer details - it just stays as a complete rectangle. NB: Have successfully re-sized it & am trying to rotate it. I am new to GIMP, but IT competent.
Various ways.
You can add as a layer, and scale / move / rotate the layer. Another arrow requires another layer.
Use a script / plugin to create the arrow. That is probably the most flexible way and generally produces the best results.
Use your png arrow and create a brush.
Make it black on a white background, set Image -> Mode to Greyscale and export as a somename.gbr to your brushes folder. C:\Users\"yourname"\AppData\Roaming\GIMP\2.10\brushes
Edit: For a greyscale brush the white base is transparent and black takes the FG colour @ 100% opacity. Various grey values result in reduced opacity.
Refresh the brushes (or restart Gimp) and use the new brush as a 'stamp'. Uses the current FG colour. Some scope for resizing , rotating using the brush tool sliders, but note this can degrade the stamp due to interpolation.