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; This is a slightly modified copy of the sphere script to show and test
; the possibilities of the new Script-Fu API extensions.
;
; ----------------------------------------------------------------------
; SF-ADJUSTMENT
; is only useful in interactive mode, if you call a script from
; the console, it acts just like a normal SF-VALUE
; In interactive mode it creates an adjustment widget in the dialog.
;
; Usage:
; SF-ADJUSTMENT "label" '(value, lower, upper, step_inc, page_inc, digits, type)
;
; type is one of: SF-SLIDER(0), SF-SPINNER(1)
; ----------------------------------------------------------------------
; SF-FONT
; creates a font-selection widget in the dialog. It returns a fontname as
; a string. There are two new gimp-text procedures to ease the use of this
; return parameter:
;
; (gimp-text-fontname image drawable
; x-pos y-pos text border antialias size unit font)
; (gimp-text-get-extents-fontname text size unit font))
;
; where font is the fontname you get. The size specified in the fontname
; is silently ignored. It is only used in the font-selector. So you are
; asked to set it to a useful value (24 pixels is a good choice) when
; using SF-FONT.
;
; Usage:
; SF-FONT "label" "fontname"
; ----------------------------------------------------------------------
; SF-BRUSH
; is only useful in interactive mode. It will create a widget in the control
; dialog. The widget consists of a preview area (which when pressed will
; produce a popup preview ) and a button with the "..." label. The button will
; popup a dialog where brushes can be selected and each of the
; characteristics of the brush can be modified.
;
; The actual value returned when the script is invoked is a list
; consisting of Brush name, opacity, spacing and brush mode in the same
; units as passed in as the default value.
;
; Usage:
; SF-BRUSH "Brush" '("Circle (03)" 1.0 44 0)
;
; Here the brush dialog will be popped up with a default brush of Circle (03)
; opacity 1.0, spacing 44 and paint mode of Normal (value 0).
; If this selection was unchanged the value passed to the function as a
; paramater would be '("Circle (03)" 1.0 44 0). BTW the widget used
; is generally available in the libgimpui library for any plugin that
; wishes to select a brush.
; ----------------------------------------------------------------------
; SF-PATTERN
; Only useful in interactive mode. It will create a widget in the control
; dialog. The widget consists of a preview area (which when pressed will
; produce a popup preview ) and a button with the "..." label. The button will
; popup a dialog where patterns can be selected.
;
; Usage:
; SF-PATTERN "Pattern" "Maple Leaves"
;
; The value returned when the script is invoked is a string containing the
; pattern name. If the above selection was not altered the string would
; contain "Maple Leaves"
; ----------------------------------------------------------------------
; SF-GRADIENT
; Only useful in interactive mode. It will create a widget in the control
; dialog. The widget consists of a button containing a preview of the selected
; gradient. If the button is pressed a gradient selection dialog will popup.
;
; Usage:
; SF-GRADIENT "Gradient" "Deep Sea"
;
; The value returned when the script is invoked is a string containing the
; gradient name. If the above selection was not altered the string would
; contain "Deep Sea"
; ----------------------------------------------------------------------
; SF-PALETTE
; Only useful in interactive mode. It will create a widget in the control
; dialog. The widget consists of a button containing a preview of the selected
; palette. If the button is pressed a palette selection dialog will popup.
;
; Usage:
; SF-PALETTE "Palette" "Named Colors"
;
; The value returned when the script is invoked is a string containing the
; palette name. If the above selection was not altered the string would
; contain "Named Colors"
; ----------------------------------------------------------------------
; SF-FILENAME
; Only useful in interactive mode. It will create a widget in the control
; dialog. The widget consists of a button containing the name of a file.
; If the button is pressed a file selection dialog will popup.
;
; Usage:
; SF-FILENAME "Environment Map"
; (string-append "" gimp-data-directory "/scripts/beavis.jpg")
;
; The value returned when the script is invoked is a string containing the
; filename.
; ----------------------------------------------------------------------
; SF-DIRNAME
; Only useful in interactive mode. Very similar to SF-FILENAME, but the
; created widget allows to choose a directory instead of a file.
;
; Usage:
; SF-DIRNAME "Image Directory" "/var/tmp/images"
;
; The value returned when the script is invoked is a string containing the
; dirname.
; ----------------------------------------------------------------------
; SF-OPTION
; Only useful in interactive mode. It will create a widget in the control
; dialog. The widget is an option_menu showing the options that are passed
; as a list. The first option is the default choice.
;
; Usage:
; SF-OPTION "Orientation" '("Horizontal" "Vertical")
;
; The value returned when the script is invoked is the number of the
; choosen option, where the option first is counted as 0.
; ----------------------------------------------------------------------
(define (script-fu-test-sphere radius
light
shadow
bg-color
sphere-color
brush
text
multi-text
pattern
gradient
gradient-reverse
font
size
unused-palette
unused-filename
unused-orientation
unused-dirname
unused-image
unused-layer
unused-channel
unused-drawable)
(let* ((width (* radius 3.75))
(height (* radius 2.5))
(img (car (gimp-image-new width height RGB)))
(drawable (car (gimp-layer-new img width height RGB-IMAGE
"Sphere Layer" 100 NORMAL-MODE)))
(radians (/ (* light *pi*) 180))
(cx (/ width 2))
(cy (/ height 2))
(light-x (+ cx (* radius (* 0.6 (cos radians)))))
(light-y (- cy (* radius (* 0.6 (sin radians)))))
(light-end-x (+ cx (* radius (cos (+ *pi* radians)))))
(light-end-y (- cy (* radius (sin (+ *pi* radians)))))
(offset (* radius 0.1))
(text-extents (gimp-text-get-extents-fontname multi-text
size PIXELS
font))
(x-position (- cx (/ (car text-extents) 2)))
(y-position (- cy (/ (cadr text-extents) 2))))
(gimp-context-push)
(gimp-image-undo-disable img)
(gimp-image-add-layer img drawable 0)
(gimp-context-set-foreground sphere-color)
(gimp-context-set-background bg-color)
(gimp-edit-fill drawable BACKGROUND-FILL)
(gimp-context-set-background '(20 20 20))
(if (and
(or (and (>= light 45) (<= light 75))
(and (<= light 135) (>= light 105)))
(= shadow TRUE))
(let ((shadow-w (* (* radius 2.5) (cos (+ *pi* radians))))
(shadow-h (* radius 0.5))
(shadow-x cx)
(shadow-y (+ cy (* radius 0.65))))
(if (< shadow-w 0)
(prog1 (set! shadow-x (+ cx shadow-w))
(set! shadow-w (- shadow-w))))
(gimp-ellipse-select img shadow-x shadow-y shadow-w shadow-h
CHANNEL-OP-REPLACE TRUE TRUE 7.5)
(gimp-context-set-pattern pattern)
(gimp-edit-bucket-fill drawable PATTERN-BUCKET-FILL MULTIPLY-MODE
100 0 FALSE 0 0)))
(gimp-ellipse-select img (- cx radius) (- cy radius)
(* 2 radius) (* 2 radius) CHANNEL-OP-REPLACE TRUE FALSE 0)
(gimp-edit-blend drawable FG-BG-RGB-MODE NORMAL-MODE
GRADIENT-RADIAL 100 offset REPEAT-NONE FALSE
FALSE 0 0 TRUE
light-x light-y light-end-x light-end-y)
(gimp-selection-none img)
(gimp-context-set-gradient gradient)
(gimp-ellipse-select img 10 10 50 50 CHANNEL-OP-REPLACE TRUE FALSE 0)
(gimp-edit-blend drawable CUSTOM-MODE NORMAL-MODE
GRADIENT-LINEAR 100 offset REPEAT-NONE gradient-reverse
FALSE 0 0 TRUE
10 10 30 60)
(gimp-selection-none img)
(gimp-context-set-foreground '(0 0 0))
(gimp-floating-sel-anchor (car (gimp-text-fontname img drawable
x-position y-position
multi-text
0 TRUE
size PIXELS
font)))
(gimp-image-undo-enable img)
(gimp-display-new img)
(gimp-context-pop)))
(script-fu-register "script-fu-test-sphere"
"_Sphere..."
"Simple script to test and show the usage of the new Script-Fu API extensions."
"Spencer Kimball, Sven Neumann"
"Spencer Kimball"
"1996, 1998"
""
SF-ADJUSTMENT "Radius (in pixels)" '(100 1 5000 1 10 0 1)
SF-ADJUSTMENT "Lighting (degrees)" '(45 0 360 1 10 1 0)
SF-TOGGLE "Shadow" TRUE
SF-COLOR "Background color" '(255 255 255)
SF-COLOR "Sphere color" '(255 0 0)
SF-BRUSH "Brush" '("Circle (03)" 1.0 44 0)
SF-STRING "Text" "Script-Fu rocks!"
SF-TEXT "Multi-line text" "Hello,\nWorld!"
SF-PATTERN "Pattern" "Maple Leaves"
SF-GRADIENT "Gradient" "Deep Sea"
SF-TOGGLE "Gradient reverse" FALSE
SF-FONT "Font" "Agate"
SF-ADJUSTMENT "Font size (pixels)" '(50 1 1000 1 10 0 1)
SF-PALETTE "Palette" "Default"
SF-FILENAME "Environment map"
(string-append ""
gimp-data-directory
"/scripts/images/beavis.jpg")
SF-OPTION "Orientation" '("Horizontal" "Vertical")
SF-DIRNAME "Output directory" "/var/tmp/"
SF-IMAGE "Image" -1
SF-LAYER "Layer" -1
SF-CHANNEL "Channel" -1
SF-DRAWABLE "Drawable" -1)
(script-fu-menu-register "script-fu-test-sphere"
"<Toolbox>/Xtns/Script-Fu/Test")
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