957d76fd14
Not sure what I had in mind with the class method copy() in libgimp GimpLayer. The core duplicate code already takes care of returning an object of the right type. Also the GimpTextLayer implementation was not a perfect copy (only text, font and font size were copied). Now it is because, again, core has all the duplication code necessary. Finally this makes this function visible to PDB, hence Script-Fu, again.
130 lines
4.6 KiB
Scheme
130 lines
4.6 KiB
Scheme
; GIMP - The GNU Image Manipulation Program
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; Copyright (C) 1995 Spencer Kimball and Peter Mattis
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;
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation; either version 3 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;
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;
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; waves-anim.scm version 1.01 1997/12/13
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;
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; CHANGE-LOG:
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; 1.00 - initial release
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; 1.01 - some code cleanup, no real changes
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;
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; Copyright (C) 1997 Sven Neumann <sven@gimp.org>
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;
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;
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; Makes a copy of your image and creates an animation of the active layer
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; as if a stone was thrown into the image. The animation may be saved with
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; the gif-plug-in.
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(define (script-fu-waves-anim img
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drawables
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amplitude
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wavelength
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num-frames
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invert)
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(let* ((amplitude (max 0 amplitude))
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(wavelength (max 0 wavelength))
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(num-frames (max 1 num-frames))
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(remaining-frames num-frames)
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(phase 0)
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(phaseshift (/ 360 num-frames))
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(image (car (gimp-image-duplicate img)))
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(source-layer (vector-ref (car (gimp-image-get-selected-layers image)) 0)))
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(gimp-image-undo-disable image)
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(if (= invert TRUE)
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(set! phaseshift (- 0 phaseshift)))
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(while (> remaining-frames 1)
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(let* (
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(waves-layer (car (gimp-layer-copy source-layer)))
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(layer-name (string-append "Frame "
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(number->string
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(- (+ num-frames 2)
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remaining-frames) 10
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)
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" (replace)"))
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(phi phase)
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(width (car (gimp-drawable-get-width waves-layer)))
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(height (car (gimp-drawable-get-height waves-layer)))
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(aspect (/ width height))
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)
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(gimp-layer-add-alpha waves-layer)
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(gimp-layer-set-lock-alpha waves-layer FALSE)
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(gimp-image-insert-layer image waves-layer 0 -1)
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(gimp-item-set-name waves-layer layer-name)
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(while (< phi 0)
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(set! phi (+ phi 360.0))
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)
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(set! phi (/ (- (modulo phase 360.0) 180.0) 180.0))
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(if (< aspect 0.1)
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(set! aspect 0.1))
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(if (> aspect 10.0)
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(set! aspect 10.0))
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(gimp-drawable-merge-new-filter waves-layer "gegl:waves" 0 LAYER-MODE-REPLACE 1.0 "amplitude" amplitude "phi" phi
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"period" (* wavelength 2.0)
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"clamp" TRUE "aspect" aspect)
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(set! remaining-frames (- remaining-frames 1))
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(set! phase (- phase phaseshift))
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)
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)
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(gimp-item-set-name source-layer "Frame 1")
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(let* (
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(phi phase)
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(width (car (gimp-drawable-get-width source-layer)))
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(height (car (gimp-drawable-get-height source-layer)))
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(aspect (/ width height))
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)
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(while (< phi 0)
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(set! phi (+ phi 360.0))
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)
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(set! phi (/ (- (modulo phase 360.0) 180.0) 180.0))
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(if (< aspect 0.1)
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(set! aspect 0.1))
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(if (> aspect 10.0)
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(set! aspect 10.0))
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(gimp-drawable-merge-new-filter source-layer "gegl:waves" 0 LAYER-MODE-REPLACE 1.0 "amplitude" amplitude "phi" phi
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"period" (* wavelength 2.0)
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"clamp" TRUE "aspect" aspect)
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)
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(gimp-image-undo-enable image)
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(gimp-display-new image)
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)
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)
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(script-fu-register-filter "script-fu-waves-anim"
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_"_Waves..."
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_"Create a multi-layer image with an effect like a stone was thrown into the current image"
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"Sven Neumann <sven@gimp.org>"
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"Sven Neumann"
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"1997/13/12"
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"RGB* GRAY*"
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SF-ONE-OR-MORE-DRAWABLE
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SF-ADJUSTMENT _"Amplitude" '(10 1 101 1 10 1 0)
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SF-ADJUSTMENT _"Wavelength" '(10 0.1 100 1 10 1 0)
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SF-ADJUSTMENT _"Number of frames" '(6 1 512 1 10 0 1)
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SF-TOGGLE _"Invert direction" FALSE
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)
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(script-fu-menu-register "script-fu-waves-anim"
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"<Image>/Filters/Animation/")
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