; ; burn-in-anim.scm V2.1 - script-fu for the GIMP 1.1 and higher ; ; Copyright (C) 9/2000 Roland Berger ; roland@fuchur.leute.server.de ; http://fuchur.leute.server.de ; ; Let text appear and fade out with a "burn-in" like SFX. ; Works on an image with a text and a background layer ; ; Copying Policy: GNU Public License http://www.gnu.org ; (define (script-fu-burn-in-anim org-img org-layer glow-color fadeout bl-width corona-width after-glow show-glow optimize speed) (let* ( ;--- main variable: "bl-x" runs from 0 to layer-width (bl-x 0) (frame-nr 0) (old-fg (car (gimp-palette-get-foreground))) (old-bg (car (gimp-palette-get-background)))) (if (< speed 1) (set! speed (* -1 speed)) ) ;--- check image and work on a copy (if (= (car (gimp-image-get-layers org-img)) 2) ;--- main program structure starts here, begin of "if-1" (begin (set! img (car (gimp-image-duplicate org-img))) (gimp-image-undo-disable img) (if (> (car (gimp-drawable-type org-layer)) 1 ) (gimp-image-convert-rgb img)) (set! source-layer (aref (cadr (gimp-image-get-layers img)) 0 )) (set! bg-source-layer (aref (cadr (gimp-image-get-layers img)) 1 )) (set! source-layer-width (car (gimp-drawable-width source-layer))) ;--- hide layers, cause we want to "merge visible layers" later (gimp-drawable-set-visible source-layer FALSE) (gimp-drawable-set-visible bg-source-layer FALSE) ;--- process image horizontal with pixel-speed (while (< bl-x (+ source-layer-width bl-width)) (set! bl-layer (car (gimp-layer-copy source-layer TRUE))) (set! bl-layer-name (string-append "fr-nr" (number->string frame-nr 10) ) ) (gimp-image-add-layer img bl-layer -2) (gimp-drawable-set-name bl-layer bl-layer-name) (gimp-drawable-set-visible bl-layer TRUE) (gimp-layer-set-preserve-trans bl-layer TRUE) (gimp-layer-add-alpha bl-layer) ;--- add an alpha mask for blending and select it (gimp-selection-layer-alpha bl-layer) (set! bl-mask (car (gimp-layer-create-mask bl-layer ADD-BLACK-MASK))) (gimp-layer-add-mask bl-layer bl-mask) ;--- handle layer geometry (set! bl-layer-width source-layer-width) (set! bl-height (car (gimp-drawable-height bl-layer))) (set! bl-x-off (- bl-x bl-width)) (set! bl-x-off (+ bl-x-off (car (gimp-drawable-offsets bl-layer)))) (set! bl-y-off (cadr (gimp-drawable-offsets bl-layer))) ;--- select a rectangular area to blend (gimp-rect-select img bl-x-off bl-y-off bl-width bl-height CHANNEL-OP-REPLACE 0 0) ;--- select at least 1 pixel! (gimp-rect-select img bl-x-off bl-y-off (+ bl-width 1) bl-height CHANNEL-OP-ADD 0 0) (if (= fadeout FALSE) (begin (set! nofadeout-bl-x-off (car (gimp-drawable-offsets bl-layer))) (set! nofadeout-bl-width (+ nofadeout-bl-x-off bl-x)) (set! nofadeout-bl-width (max nofadeout-bl-width 1)) (gimp-rect-select img nofadeout-bl-x-off bl-y-off nofadeout-bl-width bl-height CHANNEL-OP-REPLACE 0 0))) ;--- alpha blending text to trans (fadeout) (gimp-palette-set-foreground '(255 255 255)) (gimp-palette-set-background '( 0 0 0)) (if (= fadeout TRUE) (begin ; blend with 20% offset to get less transparency in the front (gimp-edit-blend bl-mask FG-BG-RGB-MODE NORMAL-MODE GRADIENT-LINEAR 100 20 REPEAT-NONE FALSE FALSE 0 0 TRUE (+ bl-x-off bl-width) 0 bl-x-off 0))) (if (= fadeout FALSE) (begin (gimp-palette-set-foreground '(255 255 255)) (gimp-edit-bucket-fill bl-mask FG-BUCKET-FILL NORMAL-MODE 100 255 0 0 0))) (gimp-layer-remove-mask bl-layer MASK-APPLY) ;--- add bright glow in front (if (= show-glow TRUE) (begin ;--- add some brightness to whole text (if (= fadeout TRUE) (gimp-brightness-contrast bl-layer 100 0)) ;--- blend glow color inside the letters (gimp-palette-set-foreground glow-color) (gimp-edit-blend bl-layer FG-TRANSPARENT-MODE NORMAL-MODE GRADIENT-LINEAR 100 0 REPEAT-NONE FALSE FALSE 0 0 TRUE (+ bl-x-off bl-width) 0 (- (+ bl-x-off bl-width) after-glow) 0) ;--- add corona effect (gimp-selection-layer-alpha bl-layer) (gimp-selection-sharpen img) (gimp-selection-grow img corona-width) (gimp-layer-set-preserve-trans bl-layer FALSE) (gimp-selection-feather img corona-width) (gimp-palette-set-foreground glow-color) (gimp-edit-blend bl-layer FG-TRANSPARENT-MODE NORMAL-MODE GRADIENT-LINEAR 100 0 REPEAT-NONE FALSE FALSE 0 0 TRUE (- (+ bl-x-off bl-width) corona-width) 0 (- (+ bl-x-off bl-width) after-glow) 0)) ) ;--- merge with bg layer (set! bg-layer (car (gimp-layer-copy bg-source-layer FALSE))) (gimp-image-add-layer img bg-layer -1) (gimp-image-lower-layer img bg-layer) (set! bg-layer-name (string-append "bg-" (number->string frame-nr 10))) (gimp-drawable-set-name bg-layer bg-layer-name) (gimp-drawable-set-visible bg-layer TRUE) (set! blended-layer (car (gimp-image-merge-visible-layers img CLIP-TO-IMAGE))) ;(set! blended-layer bl-layer) (gimp-drawable-set-visible blended-layer FALSE) ;--- end of "while" loop (set! frame-nr (+ frame-nr 1)) (set! bl-x (+ bl-x speed))) ;--- finalize the job (gimp-selection-none img) (gimp-image-remove-layer img source-layer) (gimp-image-remove-layer img bg-source-layer) (gimp-image-set-filename img "burn-in") (if (= optimize TRUE) (begin (gimp-image-convert-indexed img 1 WEB-PALETTE 250 FALSE TRUE "") (set! img-out (car (plug-in-animationoptimize 0 img bl-layer))))) (gimp-drawable-set-visible (aref (cadr (gimp-image-get-layers img)) 0) TRUE) (gimp-image-undo-enable img) (gimp-image-clean-all img) (set! img-display (car (gimp-display-new img))) (gimp-palette-set-foreground old-fg) (gimp-palette-set-background old-bg) (gimp-displays-flush)) ;--- false form of "if-1" (gimp-message _"Burn-In: Need two layers in total!" "A foreground text layer with transparency" "and a background layer.")))) (script-fu-register "script-fu-burn-in-anim" _"/Script-Fu/Animators/B_urn-In..." _"Burn-in like effect on a fg (text) layer and a bg layer; V2.1" "Roland Berger roland@fuchur.leute.server.de" "Roland Berger" "January 2001" "RGBA GRAYA INDEXEDA" SF-IMAGE "The Image" 0 SF-DRAWABLE "Layer to animate" 0 SF-COLOR _"Glow Color" '(255 255 255) SF-TOGGLE _"Fadeout" FALSE SF-VALUE _"Fadeout Width" "100" SF-VALUE _"Corona Width" "7" SF-VALUE _"After Glow" "50" SF-TOGGLE _"Add Glowing" TRUE SF-TOGGLE _"Prepare for GIF" FALSE SF-VALUE _"Speed (pixels/frame)" "50")