84 lines
3.7 KiB
Scheme
84 lines
3.7 KiB
Scheme
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; "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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; Revised by Saul Goode April 2015.
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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 (script-fu-ripply-anim image drawable displacement num-frames edge-type)
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(let* ((width (car (pika-drawable-get-width drawable)))
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(height (car (pika-drawable-get-height drawable)))
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(work-image (car (pika-image-new width
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height
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(quotient (car (pika-drawable-type drawable))
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2))))
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(map-layer (car (pika-layer-new work-image
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width
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height
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(car (pika-drawable-type drawable))
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"Ripple Map"
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100
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LAYER-MODE-NORMAL))))
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(pika-context-push)
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(pika-context-set-paint-mode LAYER-MODE-NORMAL)
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(pika-context-set-opacity 100.0)
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(pika-image-undo-disable work-image)
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; Create a tile-able displacement map in the first layer
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(pika-context-set-background '(127 127 127))
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(pika-image-insert-layer work-image map-layer 0 0)
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(pika-drawable-edit-fill map-layer FILL-BACKGROUND)
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(plug-in-noisify RUN-NONINTERACTIVE work-image map-layer FALSE 1.0 1.0 1.0 0.0)
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(plug-in-tile RUN-NONINTERACTIVE work-image 1 (vector map-layer) (* width 3) (* height 3) FALSE)
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(plug-in-gauss-iir RUN-NONINTERACTIVE work-image map-layer 35 TRUE TRUE)
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(pika-drawable-equalize map-layer TRUE)
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(plug-in-gauss-rle RUN-NONINTERACTIVE work-image map-layer 5 TRUE TRUE)
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(pika-drawable-equalize map-layer TRUE)
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(pika-image-crop work-image width height width height)
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; Create the frame layers
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(let loop ((remaining-frames num-frames))
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(unless (zero? remaining-frames)
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(let ((frame-layer (car (pika-layer-new-from-drawable drawable work-image))))
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(pika-image-insert-layer work-image frame-layer 0 0)
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(pika-item-set-name frame-layer
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(string-append "Frame "
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(number->string (+ 1 (- num-frames
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remaining-frames)))
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" (replace)"))
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(plug-in-displace RUN-NONINTERACTIVE work-image frame-layer
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displacement displacement
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TRUE TRUE map-layer map-layer (+ edge-type 1))
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(pika-item-set-visible frame-layer TRUE))
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(pika-drawable-offset map-layer
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TRUE
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OFFSET-BACKGROUND
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(/ width num-frames)
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(/ height num-frames))
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(loop (- remaining-frames 1))))
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(pika-image-remove-layer work-image map-layer)
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(pika-image-undo-enable work-image)
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(pika-display-new work-image)
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(pika-context-pop)))
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(script-fu-register "script-fu-ripply-anim"
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_"_Rippling..."
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_"Create a multi-layer image by adding a ripple effect to the current layer"
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"Adam D. Moss (adam@foxbox.org), Saul Goode"
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"Adam D. Moss, Saul Goode"
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"1997, 2015"
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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" _"Smear" _"Black")
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)
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(script-fu-menu-register "script-fu-ripply-anim"
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"<Image>/Filters/Animation/")
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