d998515787
directly into Xtns. Language specific tools (e.g. Refresh, Console) remain in language-specific menus. Bug 145507.
166 lines
5.5 KiB
Scheme
166 lines
5.5 KiB
Scheme
; Nova Starscape
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; Create a text effect that simulates an eerie alien glow around text
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(define (find-blend-coords w
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h)
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(let* ((denom (+ (/ w h) (/ h w)))
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(bx (/ (* -2 h) denom))
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(by (/ (* -2 w) denom)))
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(cons bx by)))
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(define (find-nova-x-coord drawable
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x1
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x2
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y)
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(let* ((x 0)
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(alpha 3)
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(range (- x2 x1))
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(min-clearance 5)
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(val '())
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(val-left '())
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(val-right '())
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(val-top '())
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(val-bottom '())
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(limit 100)
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(clearance 0))
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(while (and (= clearance 0) (> limit 0))
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(set! x (+ (rand range) x1))
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(set! val (cadr (gimp-drawable-get-pixel drawable x y)))
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(set! val-left (cadr (gimp-drawable-get-pixel drawable (- x min-clearance) y)))
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(set! val-right (cadr (gimp-drawable-get-pixel drawable (+ x min-clearance) y)))
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(set! val-top (cadr (gimp-drawable-get-pixel drawable x (- y min-clearance))))
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(set! val-bottom (cadr (gimp-drawable-get-pixel drawable x (+ y min-clearance))))
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(if (and (= (aref val alpha) 0) (= (aref val-left alpha) 0) (= (aref val-right alpha) 0)
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(= (aref val-top alpha) 0) (= (aref val-bottom alpha) 0))
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(set! clearance 1) (set! limit (- limit 1))))
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x))
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(define (apply-starscape-logo-effect img
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logo-layer
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size
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glow-color)
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(let* ((border (/ size 4))
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(grow (/ size 30))
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(offx (* size 0.03))
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(offy (* size 0.02))
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(feather (/ size 4))
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(shadow-feather (/ size 25))
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(width (car (gimp-drawable-width logo-layer)))
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(height (car (gimp-drawable-height logo-layer)))
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(w (* (/ (- width (* border 2)) 2.0) 0.75))
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(h (* (/ (- height (* border 2)) 2.0) 0.75))
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(novay (* height 0.3))
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(novax (find-nova-x-coord logo-layer (* width 0.2) (* width 0.8) novay))
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(novaradius (/ (min height width) 7.0))
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(cx (/ width 2.0))
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(cy (/ height 2.0))
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(bx (+ cx (car (find-blend-coords w h))))
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(by (+ cy (cdr (find-blend-coords w h))))
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(bg-layer (car (gimp-layer-new img width height RGB-IMAGE "Background" 100 NORMAL-MODE)))
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(glow-layer (car (gimp-layer-new img width height RGBA-IMAGE "Glow" 100 NORMAL-MODE)))
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(shadow-layer (car (gimp-layer-new img width height RGBA-IMAGE "Drop Shadow" 100 NORMAL-MODE)))
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(bump-channel (car (gimp-channel-new img width height "Bump Map" 50 '(0 0 0)))))
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(gimp-context-push)
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(gimp-selection-none img)
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(script-fu-util-image-resize-from-layer img logo-layer)
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(gimp-image-add-layer img bg-layer 1)
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(gimp-image-add-layer img glow-layer 1)
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(gimp-image-add-layer img shadow-layer 1)
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(gimp-image-add-channel img bump-channel 0)
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(gimp-layer-set-lock-alpha logo-layer TRUE)
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(gimp-context-set-background '(0 0 0))
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(gimp-edit-fill bg-layer BACKGROUND-FILL)
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(gimp-edit-clear shadow-layer)
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(gimp-edit-clear glow-layer)
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(gimp-selection-layer-alpha logo-layer)
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(gimp-selection-grow img grow)
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(gimp-selection-feather img feather)
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(gimp-context-set-background glow-color)
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(gimp-selection-feather img feather)
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(gimp-edit-fill glow-layer BACKGROUND-FILL)
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(gimp-selection-layer-alpha logo-layer)
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(gimp-selection-feather img shadow-feather)
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(gimp-context-set-background '(0 0 0))
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(gimp-selection-translate img offx offy)
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(gimp-edit-fill shadow-layer BACKGROUND-FILL)
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(gimp-selection-none img)
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(gimp-context-set-background '(31 31 31))
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(gimp-context-set-foreground '(255 255 255))
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(gimp-edit-blend logo-layer FG-BG-RGB-MODE NORMAL-MODE
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GRADIENT-BILINEAR 100 0 REPEAT-NONE FALSE
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FALSE 0 0 TRUE
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cx cy bx by)
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(plug-in-nova 1 img glow-layer novax novay glow-color novaradius 100 0)
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(gimp-selection-all img)
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(gimp-context-set-pattern "Stone")
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(gimp-edit-bucket-fill bump-channel PATTERN-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0)
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(plug-in-bump-map 1 img logo-layer bump-channel
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135.0 45.0 4 0 0 0 0 FALSE FALSE 0)
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(gimp-image-remove-channel img bump-channel)
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(gimp-selection-none img)
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(gimp-context-pop)))
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(define (script-fu-starscape-logo-alpha img
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logo-layer
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size
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glow-color)
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(begin
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(gimp-image-undo-group-start img)
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(apply-starscape-logo-effect img logo-layer size glow-color)
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(gimp-image-undo-group-end img)
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(gimp-displays-flush)))
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(script-fu-register "script-fu-starscape-logo-alpha"
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_"Sta_rscape..."
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"Starscape using the Nova plug-in"
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"Spencer Kimball"
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"Spencer Kimball"
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"1997"
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"RGBA"
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SF-IMAGE "Image" 0
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SF-DRAWABLE "Drawable" 0
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SF-ADJUSTMENT _"Effect size (pixels * 4)" '(150 1 1000 1 10 0 1)
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SF-COLOR _"Glow color" '(28 65 188))
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(script-fu-menu-register "script-fu-starscape-logo-alpha"
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"<Image>/Filters/Alpha to Logo")
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(define (script-fu-starscape-logo text
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size
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fontname
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glow-color)
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(let* ((img (car (gimp-image-new 256 256 RGB)))
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(border (/ size 4))
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(text-layer (car (gimp-text-fontname img -1 0 0 text border
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TRUE size PIXELS fontname))))
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(gimp-image-undo-disable img)
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(apply-starscape-logo-effect img text-layer size glow-color)
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(gimp-image-undo-enable img)
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(gimp-display-new img)))
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(script-fu-register "script-fu-starscape-logo"
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_"Sta_rscape..."
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"Starscape using the Nova plug-in"
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"Spencer Kimball"
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"Spencer Kimball"
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"1997"
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""
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SF-STRING _"Text" "Nova"
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SF-ADJUSTMENT _"Font size (pixels)" '(150 1 1000 1 10 0 1)
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SF-FONT _"Font" "Engraver"
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SF-COLOR _"Glow color" '(28 65 188))
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(script-fu-menu-register "script-fu-starscape-logo"
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"<Toolbox>/Xtns/Logos")
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