Jumble for Mac can works with non rectangular layers with alpha mask.
You may create these layers by loading alpha masked image into layers.
Current version supports few alpha masked file formats:
Four channels uncompressed RGBA .TIF files.
Four channels compressed JPEG2000 .JP2 files.
3 - Four channels RGBA .PNG file format.
create your own RGBA .TIF files you need some third
party graphic editor like Photoshop or Gimp. You need to trace object
with lasso (or scissors) tool, create a selection around the object and
save this selection as a new channel. The image below shows sea shell
photo in RGBA .TIF format opened in Photoshop.
you create objects for Photo Jumble libraries you must finish editing
with similar four channel image and save it in .TIF
format file with no compression.
it is good idea to contract and/or soften selection edges before saving
selection as the new image channel.
recommend you make all images in the library with the same aspect
ratio. Even if real objects have different width/height aspects we
recommend to fit them into same aspect rectangle before cutting off
library: images have different proportions:
library: the same images have the same proportions:
you create a new RGBA library with New
dialogue we recommend to use sampling about 12 or 14 for RGBA