Dessiner des flèches. Fichier à déposer dans le dossier utilisateur script.
; Berengar W. Lehr (Berengar.Lehr@gmx.de) ; Medical Physics Group, Department of Diagnostic and Interventional Radiology ; Jena University Hospital, 07743 Jena, Thueringen, Germany ; ; This program is free software; you can redistribute it and/or modify ; it under the terms of the GNU General Public License as published by ; the Free Software Foundation; either version 2 of the License, or ; (at your option) any later version. ; ; This program is distributed in the hope that it will be useful, ; but WITHOUT ANY WARRANTY; without even the implied warranty of ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ; GNU General Public License for more details. ; ; If you use this script and/or like it the author would be happy to ; receive a postcard from you: ; ; You should have received a copy of the GNU General Public License ; along with this program; if not, write to the Free Software ; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ; ; Versionhistory: ; 11/10/2009 first release ; 11/15/2009 Added fixed brush width and double headed error, removed bug 1) one-point-paths, 2) horizontal paths ; 11/16/2009 Fixed image type restriction string ; 11/19/2009 Added feature for absolute wing length, fixed handling gray-scale images ; 25/01/2010 Fixed fixed opacity bug (thanks to Richard) (define pi (* 4 (atan 1.0))) (define (script-fu-help-1Arrow inPointToX inPointToY inPointFromX inPointFromY theWingLength WingAngle drawable image FullHead MiddlePoint ) (let* ( ; calculate absolute angle of both wings in image from relative angle ; between wings and arrow-tail and absolut angle of arrow-tail (theArrowAngle (if (= (- inPointToY inPointFromY) 0) (/ pi (if (< (- inPointToX inPointFromX) 0) 2 -2)) (+ (atan (/ (- inPointToX inPointFromX) (- inPointToY inPointFromY))) (if (> inPointToY inPointFromY) pi 0)) )) (theLeftAngle (+ theArrowAngle WingAngle)) (theRightAngle (- theArrowAngle WingAngle)) ; calculate end points of both wings (theLeftWingEndPointX (+ inPointToX (* theWingLength (sin theLeftAngle)))) (theLeftWingEndPointY (+ inPointToY (* theWingLength (cos theLeftAngle)))) (theRightWingEndPointX (+ inPointToX (* theWingLength (sin theRightAngle)))) (theRightWingEndPointY (+ inPointToY (* theWingLength (cos theRightAngle)))) (points (cons-array 4 'double)) (theMiddleWingEndPointX 0) (theMiddleWingEndPointY 0) (PreviousOpacity 100.0) ) (begin (set! PreviousOpacity (car (gimp-context-get-opacity))) (gimp-context-set-opacity 100.0) ; collect points for arrow-tail and draw them (aset points 0 inPointToX) (aset points 1 inPointToY) (aset points 2 inPointFromX) (aset points 3 inPointFromY) (gimp-paintbrush-default drawable 4 points) (set! points (cons-array 4 'double)) ; accordingly for left wing (aset points 0 inPointToX) (aset points 1 inPointToY) (aset points 2 theLeftWingEndPointX) (aset points 3 theLeftWingEndPointY) (gimp-paintbrush-default drawable 4 points) (set! points (cons-array 4 'double)) ; accordingly for right wing (aset points 0 inPointToX) (aset points 1 inPointToY) (aset points 2 theRightWingEndPointX) (aset points 3 theRightWingEndPointY) (gimp-paintbrush-default drawable 4 points) ; only if head is to be filled (if (= FullHead 1) (begin ; calculate intersection of connection between the wings end points and arrow tail ; shrink distance between this point and arrow head if MiddlePoint < 100 (set! theMiddleWingEndPointX (+ inPointToX (* (/ MiddlePoint 100) (- (/ (+ theLeftWingEndPointX theRightWingEndPointX) 2) inPointToX)) )) (set! theMiddleWingEndPointY (+ inPointToY (* (/ MiddlePoint 100) (- (/ (+ theLeftWingEndPointY theRightWingEndPointY) 2) inPointToY)) )) ; collect points for left wing end - intersection - right wing end & draw it (set! points (cons-array 6 'double)) (aset points 0 theLeftWingEndPointX) (aset points 1 theLeftWingEndPointY) (aset points 2 theMiddleWingEndPointX) (aset points 3 theMiddleWingEndPointY) (aset points 4 theRightWingEndPointX) (aset points 5 theRightWingEndPointY) (gimp-paintbrush-default drawable 6 points) ; collect points to create selection which will be filled with FG color (set! points (cons-array 8 'double)) (aset points 0 inPointToX) (aset points 1 inPointToY) (aset points 2 theLeftWingEndPointX) (aset points 3 theLeftWingEndPointY) (aset points 4 theMiddleWingEndPointX) (aset points 5 theMiddleWingEndPointY) (aset points 6 theRightWingEndPointX) (aset points 7 theRightWingEndPointY) (gimp-free-select image 8 points CHANNEL-OP-REPLACE TRUE FALSE 0) (gimp-edit-bucket-fill drawable FG-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0) (gimp-selection-none image) )) (gimp-context-set-opacity PreviousOpacity) ) ; begin ) ; let ) ; define (define (script-fu-draw-arrow image drawable WingLengthRatio WingAngle FullHead MiddlePoint BrushThicknessOrRatio ; LineThicknessRatio ; BrushThickness useFirstPointArrowAsHead usePathThenRemove useNewLayer useDoubleHeadArrow useless ) (let* ( (theActiveVector (car (gimp-image-get-active-vectors image))) (theFirstStroke 0) (theStrokePoints 0) (theNumPoints 0) (inPoint_1X 0) (inPoint_1Y 0) (inPoint_2X 0) (inPoint_2Y 0) (theArrowLength 0) (theWingLength 0) (oldLayer (car (gimp-image-get-active-layer image))) (brushName "arrowBrush") (oldBrushName (car (gimp-context-get-brush))) ) (if (not (= theActiveVector -1)) (begin (gimp-image-undo-group-start image) ; create new layer if asked to do so (if (= useNewLayer 1) (begin (set! drawable (car (gimp-layer-new image (car (gimp-image-width image)) (car (gimp-image-height image)) (+ 1 (* 2 (car (gimp-image-base-type image)))) "Arrow" 100 NORMAL-MODE ))) (gimp-image-add-layer image drawable 0) ; set new layer completely transparent (gimp-layer-add-mask drawable (car (gimp-layer-create-mask drawable ADD-BLACK-MASK))) (gimp-layer-remove-mask drawable MASK-APPLY) )) ; get path/vector points (set! theFirstStroke (aref (cadr (gimp-vectors-get-strokes theActiveVector)) 0)) (set! theStrokePoints (caddr (gimp-vectors-stroke-get-points theActiveVector theFirstStroke))) (set! theNumPoints (cadr (gimp-vectors-stroke-get-points theActiveVector theFirstStroke))) ; get position of arrow head and arrow tail from active vector (set! inPoint_1X (aref theStrokePoints 2)) (set! inPoint_1Y (aref theStrokePoints 3)) (set! inPoint_2X (aref theStrokePoints (- theNumPoints 4))) (set! inPoint_2Y (aref theStrokePoints (- theNumPoints 3))) ; calculate length of arrows depending on the length of the whole arrow (define (sqr x) (* x x)) (set! theArrowLength (exp (* 0.5 (log (+ (sqr (- inPoint_1X inPoint_2X)) (sqr (- inPoint_1Y inPoint_2Y))))))) (if (< WingLengthRatio 0) (set! theWingLength (* theArrowLength (/ -1 WingLengthRatio))) (set! theWingLength WingLengthRatio) ) ; define new brush for drawing operation (gimp-brush-new brushName) (gimp-brush-set-shape brushName BRUSH-GENERATED-CIRCLE) (gimp-brush-set-spikes brushName 2) (gimp-brush-set-hardness brushName 1.00) (gimp-brush-set-aspect-ratio brushName 1.0) (gimp-brush-set-angle brushName 0.0) (gimp-brush-set-spacing brushName 1.0) ; set radius of brush according to length of arrow (if (< BrushThicknessOrRatio 0) (gimp-brush-set-radius brushName (/ theArrowLength (* BrushThicknessOrRatio -1))) (gimp-brush-set-radius brushName BrushThicknessOrRatio) ) (gimp-context-set-brush brushName) (if (or (= useFirstPointArrowAsHead 1) (= useDoubleHeadArrow 1)) (script-fu-help-1Arrow inPoint_1X inPoint_1Y inPoint_2X inPoint_2Y theWingLength (* (/ WingAngle 180) pi) drawable image FullHead MiddlePoint)) (if (or (= useFirstPointArrowAsHead 0) (= useDoubleHeadArrow 1)) (script-fu-help-1Arrow inPoint_2X inPoint_2Y inPoint_1X inPoint_1Y theWingLength (* (/ WingAngle 180) pi) drawable image FullHead MiddlePoint)) (gimp-context-set-brush oldBrushName) (gimp-brush-delete brushName) (if (= usePathThenRemove 1) (gimp-image-remove-vectors image theActiveVector)) (if (= useNewLayer 1) (begin (plug-in-autocrop-layer TRUE image drawable) (gimp-image-set-active-layer image oldLayer) )) (gimp-displays-flush) (gimp-image-undo-group-end image) )(gimp-message "This script needs a path with two points\nto position the arrow head and tail (first and last point of path is used)")) ) ; let* ); define ; Register the function with GIMP: (script-fu-register "script-fu-draw-arrow" _"_Arrow..." _"Draw a nearly arbitrary arrow in your image" "Berengar W. Lehr <B-Ranger@web.de>" "2009, Berengar W. Lehr / MPG@IDIR, UH Jena, Germany." "19th November 2009" "*" SF-IMAGE "The image" 0 SF-DRAWABLE "The drawable" 0 SF-ADJUSTMENT "Length of wings (LoW = AL/X) *" '(-2.5 -100 500 10 1 1 1) SF-ADJUSTMENT "Angle between arrow and wing in degree" '(25 5 85 5 15 0 0) SF-TOGGLE "Fill head of arrow?" TRUE SF-ADJUSTMENT "Percentage size of notch of arrow head\n(only valid if head of arrow is filled)" '(75 0 100 1 10 0 1) SF-ADJUSTMENT "Brush Thickness* (BS = AL/X)" '(-25 -500 500 1 10 0 1) SF-TOGGLE "Use first path point as arrow head?\n(if not the last path point of is used as arrow head)" TRUE SF-TOGGLE "Delete path after arrow was drawn?" FALSE SF-TOGGLE "Use new layer for arrow?" TRUE SF-TOGGLE "Draw double headed arrow?" FALSE SF-TOGGLE "*) Positive values stand for absolute pixel size,\nnegative for values relative to arrow length\n(the value of this checkbox is ignored)" FALSE ) (script-fu-menu-register "script-fu-draw-arrow" "<Image>/Tools/")