590c4d0b9f
2006-10-20 Kevin Cozens <kcozens@cvs.gnome.org> * plug-ins/script-fu/scheme-wrapper.c: Moved the MIN and MAX entries for image size and resolution to script_constants structureas they are not deprecated constants. * plug-ins/script-fu/scripts/script-fu.init: Removed CR in line endings. * plug-ins/script-fu/scripts/*.scm: Fixed a number of regressions that snuck in during the last big update of the scripts. This update reduces the number of differences to the original scripts (other than formatting). Some additional formatting changes in a few scripts. Updates to use colour names in register block where possible. Fixed a bug in burn-in-anim.scm. Minor cleanup of font-map.scm. Simplified the bug fix in tile-blur.scm.
87 lines
3.0 KiB
Scheme
87 lines
3.0 KiB
Scheme
; Create a 3D sphere with optional shadow
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; The sphere's principle color will be the foreground
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; Parameters:
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; bg-color: background color
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; sphere-color: color of sphere
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; radius: radius of the sphere in pixels
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; light: angle of light source in degrees
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; shadow: whather to create a shadow as well
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(define (script-fu-sphere radius
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light
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shadow
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bg-color
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sphere-color)
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(let* (
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(width (* radius 3.75))
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(height (* radius 2.5))
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(img (car (gimp-image-new width height RGB)))
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(drawable (car (gimp-layer-new img width height RGB-IMAGE
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"Sphere Layer" 100 NORMAL-MODE)))
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(radians (/ (* light *pi*) 180))
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(cx (/ width 2))
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(cy (/ height 2))
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(light-x (+ cx (* radius (* 0.6 (cos radians)))))
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(light-y (- cy (* radius (* 0.6 (sin radians)))))
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(light-end-x (+ cx (* radius (cos (+ *pi* radians)))))
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(light-end-y (- cy (* radius (sin (+ *pi* radians)))))
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(offset (* radius 0.1))
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)
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(gimp-context-push)
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(gimp-image-undo-disable img)
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(gimp-image-add-layer img drawable 0)
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(gimp-context-set-foreground sphere-color)
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(gimp-context-set-background bg-color)
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(gimp-edit-fill drawable BACKGROUND-FILL)
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(gimp-context-set-background '(20 20 20))
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(if (and
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(or (and (>= light 45) (<= light 75))
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(and (<= light 135) (>= light 105)))
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(= shadow TRUE))
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(let ((shadow-w (* (* radius 2.5) (cos (+ *pi* radians))))
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(shadow-h (* radius 0.5))
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(shadow-x cx)
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(shadow-y (+ cy (* radius 0.65))))
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(if (< shadow-w 0)
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(begin (set! shadow-x (+ cx shadow-w))
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(set! shadow-w (- shadow-w))))
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(gimp-ellipse-select img shadow-x shadow-y shadow-w shadow-h
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CHANNEL-OP-REPLACE TRUE TRUE 7.5)
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(gimp-edit-bucket-fill drawable BG-BUCKET-FILL MULTIPLY-MODE 100 0 FALSE 0 0)))
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(gimp-ellipse-select img (- cx radius) (- cy radius)
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(* 2 radius) (* 2 radius) CHANNEL-OP-REPLACE TRUE FALSE 0)
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(gimp-edit-blend drawable FG-BG-RGB-MODE NORMAL-MODE
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GRADIENT-RADIAL 100 offset REPEAT-NONE FALSE
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FALSE 0 0 TRUE
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light-x light-y light-end-x light-end-y)
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(gimp-selection-none img)
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(gimp-image-undo-enable img)
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(gimp-display-new img)
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(gimp-context-pop)
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)
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)
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(script-fu-register "script-fu-sphere"
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_"_Sphere..."
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_"Create a simple sphere with a drop shadow"
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"Spencer Kimball"
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"Spencer Kimball"
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"1996"
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""
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SF-ADJUSTMENT _"Radius (pixels)" '(100 5 500 1 10 0 1)
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SF-ADJUSTMENT _"Lighting (degrees)" '(45 0 360 1 10 0 0)
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SF-TOGGLE _"Shadow" TRUE
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SF-COLOR _"Background color" "white"
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SF-COLOR _"Sphere color" "red"
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)
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(script-fu-menu-register "script-fu-sphere"
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"<Toolbox>/Xtns/Misc")
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