mirror of https://github.com/GNOME/gimp.git
129 lines
4.4 KiB
Scheme
129 lines
4.4 KiB
Scheme
; "Rippling Image" animation generator (ripply-anim.scm)
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; Adam D. Moss (adam@foxbox.org)
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; 97/05/18
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;
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; Designed to be used in conjunction with a plugin capable
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; of saving animations (i.e. the GIF plugin).
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;
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(define (copy-layer-ripple dest-image dest-drawable source-image source-drawable)
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(gimp-selection-all dest-image)
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(gimp-edit-clear dest-drawable)
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(gimp-selection-none dest-image)
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(gimp-selection-all source-image)
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(gimp-edit-copy source-drawable)
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(gimp-selection-none source-image)
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(let ((floating-sel (car (gimp-edit-paste dest-drawable FALSE))))
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(gimp-floating-sel-anchor floating-sel)))
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(define (script-fu-ripply-anim img drawable displacement num-frames edge-type)
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(let* ((width (car (gimp-drawable-width drawable)))
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(height (car (gimp-drawable-height drawable)))
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(ripple-image (car (gimp-image-new width height GRAY)))
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(ripple-layer (car (gimp-layer-new ripple-image width height GRAY-IMAGE "Ripple Texture" 100 NORMAL-MODE)))
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(rippletiled-ret)
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(rippletiled-image)
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(rippletiled-layer)
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(remaining-frames)
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(xpos)
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(ypos)
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(xoffset)
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(yoffset)
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)
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; this script generates its own displacement map
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(gimp-context-push)
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(gimp-image-undo-disable ripple-image)
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(gimp-context-set-background '(127 127 127) )
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(gimp-image-add-layer ripple-image ripple-layer 0)
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(gimp-edit-fill ripple-layer BACKGROUND-FILL)
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(plug-in-noisify 1 ripple-image ripple-layer FALSE 1.0 1.0 1.0 0.0)
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; tile noise
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(set! rippletiled-ret (plug-in-tile 1 ripple-image ripple-layer (* width 3) (* height 3) TRUE))
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(gimp-image-undo-enable ripple-image)
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(gimp-image-delete ripple-image)
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(set! rippletiled-image (car rippletiled-ret))
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(set! rippletiled-layer (cadr rippletiled-ret))
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(gimp-image-undo-disable rippletiled-image)
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; process tiled noise into usable displacement map
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(plug-in-gauss-iir 1 rippletiled-image rippletiled-layer 35 TRUE TRUE)
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(gimp-equalize rippletiled-layer TRUE)
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(plug-in-gauss-rle 1 rippletiled-image rippletiled-layer 5 TRUE TRUE)
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(gimp-equalize rippletiled-layer TRUE)
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; displacement map is now in rippletiled-layer of rippletiled-image
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; loop through the desired frames
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(set! remaining-frames num-frames)
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(set! xpos (/ width 2))
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(set! ypos (/ height 2))
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(set! xoffset (/ width num-frames))
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(set! yoffset (/ height num-frames))
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(let* (
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(out-imagestack (car (gimp-image-new width height RGB)))
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(dup-image)
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(dup-layer)
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(layer-name)
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(this-layer)
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)
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(gimp-image-undo-disable out-imagestack)
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(while (> remaining-frames 0)
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(set! dup-image (car (gimp-image-duplicate rippletiled-image)))
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(gimp-image-undo-disable dup-image)
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(gimp-image-crop dup-image width height xpos ypos)
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(set! layer-name (string-append "Frame "
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(number->string (- num-frames remaining-frames) 10)
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" (replace)"))
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(set! this-layer (car (gimp-layer-new out-imagestack
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width height RGB
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layer-name 100 NORMAL-MODE)))
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(gimp-image-add-layer out-imagestack this-layer 0)
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(copy-layer-ripple out-imagestack this-layer img drawable)
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(set! dup-layer (car (gimp-image-get-active-layer dup-image)))
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(plug-in-displace 1 out-imagestack this-layer
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displacement displacement
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TRUE TRUE dup-layer dup-layer edge-type)
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(gimp-image-undo-enable dup-image)
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(gimp-image-delete dup-image)
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(set! remaining-frames (- remaining-frames 1))
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(set! xpos (+ xoffset xpos))
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(set! ypos (+ yoffset ypos)))
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(gimp-image-undo-enable rippletiled-image)
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(gimp-image-delete rippletiled-image)
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(gimp-image-undo-enable out-imagestack)
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(gimp-display-new out-imagestack))
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(gimp-context-pop)))
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(script-fu-register "script-fu-ripply-anim"
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_"_Rippling..."
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"Ripple any image by creating animation frames as layers"
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"Adam D. Moss (adam@foxbox.org)"
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"Adam D. Moss"
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"1997"
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"RGB* GRAY*"
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SF-IMAGE "Image to animage" 0
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SF-DRAWABLE "Drawable to animate" 0
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SF-ADJUSTMENT _"Rippling strength" '(3 0 256 1 10 1 0)
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SF-ADJUSTMENT _"Number of frames" '(15 0 256 1 10 0 1)
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SF-OPTION _"Edge behavior" '(_"Wrap"
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_"Smear"
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_"Black"))
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(script-fu-menu-register "script-fu-ripply-anim"
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"<Image>/Filters/Animation/Animators")
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