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075195d16b
2003-07-22 Michael Natterer <mitch@gimp.org> * app/core/gimpgradient.[ch]: added "gboolean reverse" to gimp_gradient_get_color_at() so all gradients can be used reversed. * app/core/gimpdrawable-blend.[ch] (gimp_drawable_blend) * app/core/gimppalette-import.[ch] (gimp_palette_import_from_gradient): added "gboolean reverse". * app/paint/paint-enums.[ch]: removed enum GimpGradientRepeatMode since it is identical to GimpRepeatMode, except for the now obsolete ONCE_BACKWARD value. * app/paint/gimppaintcore.[ch]: removed gimp_paint_core_get_color_from_gradient()... * app/paint/gimppaintoptions.[ch]: ...and added gimp_paint_options_get_gradient_color(), which is much more general. Added a "reverse" property to GimpGradientOptions and changed the type of the "repeat" property to GimpRepeatMode. * app/paint/gimppaintbrush.c: use gimp_paint_options_get_gradient_color(). * app/tools/gimpblendoptions.[ch]: removed the "repeat" property since it is in the parent class now. * app/gui/gradient-select.c * app/gui/palette-import-dialog.c * app/widgets/gimpgradienteditor.c * app/tools/gimpblendtool.c * tools/pdbgen/pdb/gradients.pdb * tools/pdbgen/pdb/misc_tools.pdb: changed accordingly. * app/tools/gimppaintoptions-gui.c: added a "Reverse" toggle right of the gradient preview. * app/widgets/gimppreviewrenderergradient.[ch]: added "gboolean reverse" member and gimp_preview_renderer_gradient_set_reverse() API. * tools/pdbgen/pdb/paint_tools.pdb: fixed the paintbrush invoker to set GimpPaintOption's "use-fade" and "use-gradient" properties correctly. * app/pdb/gradients_cmds.c * app/pdb/misc_tools_cmds.c * app/pdb/paint_tools_cmds.c * libgimp/gimpenums.h * libgimp/gimpmisctools_pdb.[ch] * plug-ins/pygimp/gimpenums.py * plug-ins/script-fu/script-fu-constants.c * tools/pdbgen/enums.pl: regenerated. * libgimp/gimpcompat.h * plug-ins/script-fu/siod-wrapper.c: removed GimpGradientPaintMode here too since it was only exported accidentially (it's not used by any external API). * plug-ins/script-fu/scripts/3dTruchet.scm * plug-ins/script-fu/scripts/alien-glow-arrow.scm * plug-ins/script-fu/scripts/alien-glow-bar.scm * plug-ins/script-fu/scripts/alien-glow-bullet.scm * plug-ins/script-fu/scripts/alien-glow-button.scm * plug-ins/script-fu/scripts/alien-glow-logo.scm * plug-ins/script-fu/scripts/basic1-logo.scm * plug-ins/script-fu/scripts/basic2-logo.scm * plug-ins/script-fu/scripts/beveled-button.scm * plug-ins/script-fu/scripts/blended-logo.scm * plug-ins/script-fu/scripts/burn-in-anim.scm * plug-ins/script-fu/scripts/coffee.scm * plug-ins/script-fu/scripts/comic-logo.scm * plug-ins/script-fu/scripts/coolmetal-logo.scm * plug-ins/script-fu/scripts/glossy.scm * plug-ins/script-fu/scripts/gradient-bevel-logo.scm * plug-ins/script-fu/scripts/gradient-example.scm * plug-ins/script-fu/scripts/pupi-button.scm * plug-ins/script-fu/scripts/rendermap.scm * plug-ins/script-fu/scripts/sphere.scm * plug-ins/script-fu/scripts/starscape-logo.scm * plug-ins/script-fu/scripts/test-sphere.scm * plug-ins/script-fu/scripts/textured-logo.scm * plug-ins/script-fu/scripts/title-header.scm * plug-ins/script-fu/scripts/weave.scm: pass "reverse" to gimp_blend(). Pass FALSE in most cases and added script parameters were it makes sense.
164 lines
5.6 KiB
Scheme
164 lines
5.6 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)))
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(glow-layer (car (gimp-layer-new img width height RGBA_IMAGE "Glow" 100 NORMAL)))
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(shadow-layer (car (gimp-layer-new img width height RGBA_IMAGE "Drop Shadow" 100 NORMAL)))
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(bump-channel (car (gimp-channel-new img width height "Bump Map" 50 '(0 0 0))))
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(old-pattern (car (gimp-patterns-get-pattern)))
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(old-fg (car (gimp-palette-get-foreground)))
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(old-bg (car (gimp-palette-get-background))))
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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-preserve-trans logo-layer TRUE)
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(gimp-palette-set-background '(0 0 0))
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(gimp-edit-fill bg-layer BG-IMAGE-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-palette-set-background glow-color)
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(gimp-selection-feather img feather)
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(gimp-edit-fill glow-layer BG-IMAGE-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-palette-set-background '(0 0 0))
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(gimp-selection-translate img offx offy)
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(gimp-edit-fill shadow-layer BG-IMAGE-FILL)
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(gimp-selection-none img)
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(gimp-palette-set-background '(31 31 31))
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(gimp-palette-set-foreground '(255 255 255))
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(gimp-blend logo-layer FG-BG-RGB NORMAL
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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-patterns-set-pattern "Stone")
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(gimp-bucket-fill bump-channel PATTERN-BUCKET-FILL NORMAL 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-patterns-set-pattern old-pattern)
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(gimp-palette-set-background old-bg)
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(gimp-palette-set-foreground old-fg)))
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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-undo-push-group-start img)
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(apply-starscape-logo-effect img logo-layer size glow-color)
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(gimp-undo-push-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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_"<Image>/Script-Fu/Alpha to Logo/Starscape..."
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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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(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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(gimp-layer-set-name text-layer text)
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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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_"<Toolbox>/Xtns/Script-Fu/Logos/Starscape..."
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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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