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map_sprites

Arguments:

• _nb_sprites>=1,_allow_rotation={ 0=none | 1=90 deg. | 2=180 deg. }

Description:

Map set of sprites (defined as the nb_sprites latest images of the selection) to other selected images,

according to the luminosity of their pixel values.

Example of use:

Command: image.jpg resize2dy 48 repeat 16 ball {8+2*$>},${-rgb} mul[-1] {(1+$>)/16} done map_sprites 16