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GIMP Script-Fu Script | 1999-07-21 | 4.5 KB | 119 lines |
- ; Nova Starscape
- ; Create a text effect that simulates an eerie alien glow around text
-
- (define (find-blend-coords w h)
- (let* ((denom (+ (/ w h) (/ h w)))
- (bx (/ (* -2 h) denom))
- (by (/ (* -2 w) denom)))
- (cons bx by)))
-
- (define (find-nova-x-coord drawable x1 x2 y)
- (let* ((x 0)
- (alpha 3)
- (range (- x2 x1))
- (min-clearance 5)
- (val '())
- (val-left '())
- (val-right '())
- (val-top '())
- (val-bottom '())
- (limit 100)
- (clearance 0))
- (while (and (= clearance 0) (> limit 0))
- (set! x (+ (rand range) x1))
- (set! val (cadr (gimp-drawable-get-pixel drawable x y)))
- (set! val-left (cadr (gimp-drawable-get-pixel drawable (- x min-clearance) y)))
- (set! val-right (cadr (gimp-drawable-get-pixel drawable (+ x min-clearance) y)))
- (set! val-top (cadr (gimp-drawable-get-pixel drawable x (- y min-clearance))))
- (set! val-bottom (cadr (gimp-drawable-get-pixel drawable x (+ y min-clearance))))
- (if (and (= (aref val alpha) 0) (= (aref val-left alpha) 0) (= (aref val-right alpha) 0)
- (= (aref val-top alpha) 0) (= (aref val-bottom alpha) 0))
- (set! clearance 1) (set! limit (- limit 1))))
- x))
-
- (define (script-fu-starscape-logo text size font glow-color)
- (let* ((img (car (gimp-image-new 256 256 RGB)))
- (border (/ size 4))
- (grow (/ size 30))
- (offx (* size 0.03))
- (offy (* size 0.02))
- (feather (/ size 4))
- (shadow-feather (/ size 25))
- (text-layer (car (gimp-text img -1 0 0 text border TRUE size PIXELS "*" font "*" "*" "*" "*")))
- (width (car (gimp-drawable-width text-layer)))
- (height (car (gimp-drawable-height text-layer)))
- (w (* (/ (- width (* border 2)) 2.0) 0.75))
- (h (* (/ (- height (* border 2)) 2.0) 0.75))
- (novay (* height 0.3))
- (novax (find-nova-x-coord text-layer (* width 0.2) (* width 0.8) novay))
- (novaradius (/ (min height width) 7.0))
- (cx (/ width 2.0))
- (cy (/ height 2.0))
- (bx (+ cx (car (find-blend-coords w h))))
- (by (+ cy (cdr (find-blend-coords w h))))
- (bg-layer (car (gimp-layer-new img width height RGB_IMAGE "Background" 100 NORMAL)))
- (glow-layer (car (gimp-layer-new img width height RGBA_IMAGE "Glow" 100 NORMAL)))
- (shadow-layer (car (gimp-layer-new img width height RGBA_IMAGE "Drop Shadow" 100 NORMAL)))
- (bump-channel (car (gimp-channel-new img width height "Bump Map" 50 '(0 0 0))))
- (old-pattern (car (gimp-patterns-get-pattern)))
- (old-fg (car (gimp-palette-get-foreground)))
- (old-bg (car (gimp-palette-get-background))))
- (gimp-image-disable-undo img)
- (gimp-image-resize img width height 0 0)
- (gimp-image-add-layer img bg-layer 1)
- (gimp-image-add-layer img glow-layer 1)
- (gimp-image-add-layer img shadow-layer 1)
- (gimp-layer-set-preserve-trans text-layer TRUE)
-
- (gimp-palette-set-background '(0 0 0))
- (gimp-edit-fill img bg-layer)
- (gimp-edit-clear img shadow-layer)
- (gimp-edit-clear img glow-layer)
-
- (gimp-selection-layer-alpha img text-layer)
- (gimp-selection-grow img grow)
- (gimp-selection-feather img feather)
- (gimp-palette-set-background glow-color)
- (gimp-selection-feather img feather)
- (gimp-edit-fill img glow-layer)
-
- (gimp-selection-layer-alpha img text-layer)
- (gimp-selection-feather img shadow-feather)
- (gimp-palette-set-background '(0 0 0))
- (gimp-selection-translate img offx offy)
- (gimp-edit-fill img shadow-layer)
-
- (gimp-selection-none img)
- (gimp-palette-set-background '(31 31 31))
- (gimp-palette-set-foreground '(255 255 255))
- (gimp-blend img text-layer FG-BG-RGB NORMAL BILINEAR 100 0 REPEAT-NONE FALSE 0 0 cx cy bx by)
-
- (plug-in-nova 1 img glow-layer novax novay glow-color novaradius 100)
-
- (gimp-selection-all img)
- (gimp-patterns-set-pattern "Stone")
- (gimp-bucket-fill img bump-channel PATTERN-BUCKET-FILL NORMAL 100 0 FALSE 0 0)
- (plug-in-bump-map 1 img text-layer bump-channel 135.0 45.0 4 0 0 0 0 FALSE FALSE 0)
- (gimp-image-remove-channel img bump-channel)
- (gimp-selection-none img)
-
- (gimp-layer-set-name text-layer text)
- (gimp-patterns-set-pattern old-pattern)
- (gimp-palette-set-background old-bg)
- (gimp-palette-set-foreground old-fg)
- (gimp-image-enable-undo img)
- (gimp-display-new img)))
-
-
- (script-fu-register "script-fu-starscape-logo"
- "<Toolbox>/Xtns/Script-Fu/Logos/Starscape"
- "Starscape using the Nova plug-in"
- "Spencer Kimball"
- "Spencer Kimball"
- "1997"
- ""
- SF-VALUE "Text String" "\"Nova\""
- SF-VALUE "Font Size (in pixels)" "150"
- SF-VALUE "Font" "\"engraver\""
- SF-COLOR "Glow Color" '(28 65 188))
-