Code snippets/fr: Difference between revisions
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This page contains examples, pieces, chunks of FreeCAD python code collected from users experiences and discussions on the forums. Read and use it as a start for your own scripts... |
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= Code_snippets/fr = |
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__TOC__ |
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Cette page contient, des exemples, des extraits de code en Python FreeCAD, recueillis auprès d'utilisateurs expérimentés et de produits de discussions sur les [http://forum.freecadweb.org/ forums].<br> |
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Lisez les et utilisez les comme point de départ pour vos propres scripts . . . |
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=== Un fichier typique InitGui.py === |
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En plus de votre module principal, chaque module doit contenir, un fichier '''InitGui.py''', responsable de l'insertion du module dans l'interface principale.<br> |
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Ceci est un simple exemple. |
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=== A typical InitGui.py file === |
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Every module must contain, besides your main module file, an InitGui.py file, responsible for inserting the module in the main Gui. This is an example of a simple one. |
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<syntaxhighlight> |
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class ScriptWorkbench (Workbench): |
class ScriptWorkbench (Workbench): |
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MenuText = "Scripts" |
MenuText = "Scripts" |
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Line 18: | Line 13: | ||
Gui.addWorkbench(ScriptWorkbench()) |
Gui.addWorkbench(ScriptWorkbench()) |
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</syntaxhighlight> |
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=== |
=== A typical module file === |
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This is an example of a main module file, containing everything your module does. It is the Scripts.py file invoked by the previous example. You can have all your custom commands here. |
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<syntaxhighlight> |
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Ceci est l'exemple d'un fichier module principal, il contient tout ce que fait votre module. C'est le fichier '''Scripts.py''' invoqué dans l'exemple précédent.<br> |
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Vous avez ici toutes vos commandes personnalisées. |
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import FreeCAD, FreeCADGui |
import FreeCAD, FreeCADGui |
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Line 34: | Line 28: | ||
FreeCADGui.addCommand('Script_Cmd', ScriptCmd()) |
FreeCADGui.addCommand('Script_Cmd', ScriptCmd()) |
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</syntaxhighlight> |
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=== |
=== Import a new filetype === |
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Making an importer for a new filetype in FreeCAD is easy. FreeCAD doesn't consider that you import data in an opened document, but rather that you simply can directly open the new filetype. So what you need to do is to add the new file extension to FreeCAD's list of known extensions, and write the code that will read the file and create the FreeCAD objects you want: |
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Importer un nouveau type de fichier dans FreeCAD est facile. |
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FreeCAD ne prends pas en considération l'importation de n'importe quelle données dans un document ouvert, parce que, vous ne pouvez pas ouvrir directement un nouveau type de fichier.<br> |
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Donc, ce que vous devez faire, c'est ajouter la nouvelle extension de fichier à la liste des extensions connues de FreeCAD, et, d'écrire le code qui va lire le fichier et créer les objets FreeCAD que vous voulez.<br> |
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Cette ligne doit être ajoutée au fichier '''InitGui.py''' pour ajouter la nouvelle extension de fichier à la liste: |
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This line must be added to the InitGui.py file to add the new file extension to the list: |
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<syntaxhighlight> |
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# Assumes Import_Ext.py is the file that has the code for opening and reading .ext files |
# Assumes Import_Ext.py is the file that has the code for opening and reading .ext files |
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FreeCAD.addImportType("Your new File Type (*.ext)","Import_Ext") |
FreeCAD.addImportType("Your new File Type (*.ext)","Import_Ext") |
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</syntaxhighlight> |
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Then in the Import_Ext.py file: |
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<syntaxhighlight> |
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def open(filename): |
def open(filename): |
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doc=App.newDocument() |
doc=App.newDocument() |
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# here you do all what is needed with filename, read, classify data, create corresponding FreeCAD objects |
# here you do all what is needed with filename, read, classify data, create corresponding FreeCAD objects |
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doc.recompute() |
doc.recompute() |
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</syntaxhighlight> |
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To export your document to some new filetype works the same way, except that you use: |
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Pour '''exporter''' votre document avec une nouvelle extension, le fonctionnement est le même,<br> |
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mais vous devrez faire: |
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FreeCAD.addExportType("Your new File Type (*.ext)","Export_Ext") |
FreeCAD.addExportType("Your new File Type (*.ext)","Export_Ext") |
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=== |
=== Adding a line === |
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A line simply has 2 points. |
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<syntaxhighlight> |
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Une ligne, à uniquement deux points. |
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import Part,PartGui |
import Part,PartGui |
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Line 68: | Line 60: | ||
doc.addObject("Part::Feature","Line").Shape=l.toShape() |
doc.addObject("Part::Feature","Line").Shape=l.toShape() |
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doc.recompute() |
doc.recompute() |
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</syntaxhighlight> |
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=== |
=== Adding a polygon === |
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A polygon is simply a set of connected line segments (a polyline in AutoCAD). It doesn't need to be closed. |
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<syntaxhighlight> |
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Un polygone est simplement un ensemble de segments connnectés (un polyline dans AutoCAD) il n'est pas obligatoirement fermé. |
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import Part,PartGui |
import Part,PartGui |
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doc=App.activeDocument() |
doc=App.activeDocument() |
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Line 86: | Line 78: | ||
p.Nodes=n |
p.Nodes=n |
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doc.recompute() |
doc.recompute() |
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</syntaxhighlight> |
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=== |
=== Adding and removing an object to a group === |
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<syntaxhighlight> |
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doc=App.activeDocument() |
doc=App.activeDocument() |
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grp=doc.addObject("App::DocumentObjectGroup", "Group") |
grp=doc.addObject("App::DocumentObjectGroup", "Group") |
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Line 94: | Line 87: | ||
grp.addObject(lin) # adds the lin object to the group grp |
grp.addObject(lin) # adds the lin object to the group grp |
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grp.removeObject(lin) # removes the lin object from the group grp |
grp.removeObject(lin) # removes the lin object from the group grp |
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</syntaxhighlight> |
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Note: You can even add other groups to a group... |
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=== Adding a Mesh === |
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'''PS:''' vous pouvez aussi ajouter un groupe dans un groupe . . . |
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<syntaxhighlight> |
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=== Ajout d'une maille (Mesh) === |
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import Mesh |
import Mesh |
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doc=App.activeDocument() |
doc=App.activeDocument() |
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Line 121: | Line 114: | ||
me=doc.addObject("Mesh::Feature","Cube") |
me=doc.addObject("Mesh::Feature","Cube") |
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me.Mesh=m |
me.Mesh=m |
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</syntaxhighlight> |
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=== |
=== Adding an arc or a circle === |
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<syntaxhighlight> |
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import Part |
import Part |
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doc = App.activeDocument() |
doc = App.activeDocument() |
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Line 131: | Line 125: | ||
f.Shape = c.toShape() # Assign the circle shape to the shape property |
f.Shape = c.toShape() # Assign the circle shape to the shape property |
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doc.recompute() |
doc.recompute() |
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</syntaxhighlight> |
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=== Accessing and changing representation of an object === |
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=== Accéder et changer la représentation d'un objet === |
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Each object in a FreeCAD document has an associated view representation object that stores all the parameters that define how the object appear, like color, linewidth, etc... |
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<syntaxhighlight> |
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Chaque objet dans un document FreeCAD a un objet '''vue''' associé a une '''représentation''' qui stocke tous les paramètres qui définissent les propriétés de l'objet, comme, la couleur, l'épaisseur de la ligne, etc .. |
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gad=Gui.activeDocument() # access the active document containing all |
gad=Gui.activeDocument() # access the active document containing all |
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# view representations of the features in the |
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# corresponding App document |
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v=gad.getObject("Cube") # access the view representation to the Mesh feature 'Cube' |
v=gad.getObject("Cube") # access the view representation to the Mesh feature 'Cube' |
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v.ShapeColor # prints the color to the console |
v.ShapeColor # prints the color to the console |
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v.ShapeColor=(1.0,1.0,1.0) # sets the shape color to white |
v.ShapeColor=(1.0,1.0,1.0) # sets the shape color to white |
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</syntaxhighlight> |
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=== |
=== Observing mouse events in the 3D viewer via Python === |
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The Inventor framework allows to add one or more callback nodes to the scenegraph of the viewer. By default in FreeCAD one callback node is installed per viewer which allows to add global or static C++ functions. In the appropriate Python binding some methods are provided to make use of this technique from within Python code. |
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<syntaxhighlight> |
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Le cadre '''Inventor''' permet d'ajouter un ou plusieurs noeuds (nodes) de rappel à la scène graphique visualisée.<br> |
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Par défaut, FreeCAD, possède un noeud (node) de rappel installé par la visionneuse (fenêtre d'affichage des graphes), qui permet d'ajouter des fonctions statiques ou globales en C++.<br> |
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Des méthodes de liaisons appropriées sont fournies avec Python, pour permettre l'utilisation de cette technique à partir de codes Python. |
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App.newDocument() |
App.newDocument() |
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v=Gui.activeDocument().activeView() |
v=Gui.activeDocument().activeView() |
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Line 164: | Line 156: | ||
o = ViewObserver() |
o = ViewObserver() |
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c = v.addEventCallback("SoMouseButtonEvent",o.logPosition) |
c = v.addEventCallback("SoMouseButtonEvent",o.logPosition) |
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</syntaxhighlight> |
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Now, pick somewhere on the area in the 3D viewer and observe the messages in the output window. To finish the observation just call |
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Maintenant, choisissez une zone dans l'écran (surface de travail) 3D et observez les messages affichés dans la fenêtre de sortie.<br> |
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<syntaxhighlight> |
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Pour terminer l'observation il suffit de faire: |
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v.removeEventCallback("SoMouseButtonEvent",c) |
v.removeEventCallback("SoMouseButtonEvent",c) |
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</syntaxhighlight> |
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The following event types are supported |
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* SoEvent -- all kind of events |
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* SoButtonEvent -- all mouse button and key events |
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* SoLocation2Event -- 2D movement events (normally mouse movements) |
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* SoMotion3Event -- 3D movement events (normally spaceball) |
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* SoKeyboardEvent -- key down and up events |
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* SoMouseButtonEvent -- mouse button down and up events |
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* SoSpaceballButtonEvent -- spaceball button down and up events |
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The Python function that can be registered with addEventCallback() expects a dictionary. Depending on the watched event the dictionary can contain different keys. |
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Les types d’évènements suivants sont pris en charge:<br> |
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* '''SoEvent''' -- tous types d'évènements |
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* '''SoButtonEvent''' -- tous les évènements, boutons, molette |
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* '''SoLocation2Event''' -- tous les évènements 2D (déplacements normaux de la souris) |
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* '''SoMotion3Event''' -- tous les évènements 3D (pour le spaceball) |
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* '''SoKeyboardEvent''' -- évènements des touches {{KEY|flèche haut}} et {{KEY|flèche bas}} |
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* '''SoMouseButtonEvent''' -- tous les évènements boutons Haut et Bas de la souris |
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* '''SoSpaceballButtonEvent''' -- tous les évènements Haut et Bas (pour le spaceball)<br><br> |
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Les fonctions Python qui peuvent être enregistrées avec '''addEventCallback()''' attendent la définition d'une bibliothèque.<br> |
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Suivant la façon dont l’évènement survient, la bibliothèque peut disposer de différentes clefs.<br> |
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Il y a une clef pour chaque événement:<br><br> |
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* '''Type''' -- le nom du type d'évènement par exemple '''SoMouseEvent, SoLocation2Event, ...''' |
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* '''Time''' -- l'heure courante codée dans une chaîne '''string''' |
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* '''Position''' -- un tuple de deux '''[http://docs.python.org/library/functions.html#int integers]''', donant la position x,y de la souris |
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* '''ShiftDown''' -- type boolean, '''true''' si {{KEY|Shift}} est pressé sinon, '''false''' |
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* '''CtrlDown''' -- type boolean, '''true''' si {{KEY|Ctrl}} est pressé sinon, '''false''' |
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* '''AltDown''' -- type boolean, '''true''' si {{KEY|Alt}} est pressé sinon, '''false''' <br><br> |
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For all events it has the keys: |
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Pour un évènement bouton comme clavier, souris ou spaceball<br> |
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* Type -- the name of the event type i.e. SoMouseEvent, SoLocation2Event, ... |
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* '''State''' -- la chaîne '''UP''' si le bouton est relevé, '''DOWN''' si le bouton est enfoncé ou '''UNKNOWN''' si rien ne se passe |
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* Time -- the current time as string |
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* Position -- a tuple of two integers, mouse position |
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* ShiftDown -- a boolean, true if Shift was pressed otherwise false |
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* CtrlDown -- a boolean, true if Ctrl was pressed otherwise false |
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* AltDown -- a boolean, true if Alt was pressed otherwise false |
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For all button events, i.e. keyboard, mouse or spaceball events |
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Pour un évènement clavier: |
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* State -- A string 'UP' if the button was up, 'DOWN' if it was down or 'UNKNOWN' for all other cases |
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* '''Key''' -- le caractère de la touche qui est pressée |
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For keyboard events: |
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Pour un évènement bouton de souris: |
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* Key -- a character of the pressed key |
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* '''Button''' -- le bouton pressé peut être BUTTON1, ..., BUTTON5 ou tous |
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For mouse button event |
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Pour un évènement spaceball: |
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* |
* Button -- The pressed button, could be BUTTON1, ..., BUTTON5 or ANY |
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For spaceball events: |
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Et finalement les évènement de mouvements:<br> |
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* Button -- The pressed button, could be BUTTON1, ..., BUTTON7 or ANY |
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* '''Translation''' -- un tuple de trois '''[http://docs.python.org/library/functions.html#float float()]''' |
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* '''Rotation''' -- un quaternion, tuple de quattre '''[http://docs.python.org/library/functions.html#float float()]''' |
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And finally motion events: |
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* Translation -- a tuple of three floats |
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=== Manipulation de scènes graphiques en Python === |
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* Rotation -- a quaternion for the rotation, i.e. a tuple of four floats |
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Il est aussi possible d'afficher ou de changer de scène en programmation Python, avec le module '''[[pivy/fr|pivy]]''' en combinaison avec [http://www.coin3d.org/ Coin] |
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=== Manipulate the scenegraph in Python === |
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It is also possible to get and change the scenegraph in Python, with the 'pivy' module -- a Python binding for Coin. |
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<syntaxhighlight> |
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from pivy.coin import * # load the pivy module |
from pivy.coin import * # load the pivy module |
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view = Gui.ActiveDocument.ActiveView # get the active viewer |
view = Gui.ActiveDocument.ActiveView # get the active viewer |
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Line 213: | Line 204: | ||
root.addChild(SoCube()) |
root.addChild(SoCube()) |
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view.fitAll() |
view.fitAll() |
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</syntaxhighlight> |
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The Python API of pivy is created by using the tool SWIG. As we use in FreeCAD some self-written nodes you cannot create them directly in Python. |
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However, it is possible to create a node by its internal name. An instance of the type 'SoFCSelection' can be created with |
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Il est cependant, possible de créer un noeud avec son nom interne.<br> |
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<syntaxhighlight> |
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Un exemple de '''SoFCSelection''', le '''type''' peut être créé avec: |
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type = SoType.fromName("SoFCSelection") |
type = SoType.fromName("SoFCSelection") |
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node = type.createInstance() |
node = type.createInstance() |
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</syntaxhighlight> |
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=== |
=== Adding and removing objects to/from the scenegraph === |
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Adding new nodes to the scenegraph can be done this way. Take care of always adding a SoSeparator to contain the geometry, coordinates and material info of a same object. The following example adds a red line from (0,0,0) to (10,0,0): |
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<syntaxhighlight> |
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Ajouter de nouveaux noeuds dans la scène graphique peut être fait de cette façon. Prenez toujours soin d'ajouter un '''SoSeparator''' pour, contenir les propriétés de la forme géométrique, les coordonnées et le matériel d'un même objet.<br> |
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L'exemple suivant ajoute une ligne rouge à partir de (0,0,0) à (10,0,0): |
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from pivy import coin |
from pivy import coin |
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sg = Gui.ActiveDocument.ActiveView.getSceneGraph() |
sg = Gui.ActiveDocument.ActiveView.getSceneGraph() |
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Line 240: | Line 229: | ||
no.addChild(li) |
no.addChild(li) |
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sg.addChild(no) |
sg.addChild(no) |
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</syntaxhighlight> |
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To remove it, simply issue: |
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Pour le supprimer, il suffit de: |
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<syntaxhighlight> |
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sg.removeChild(no) |
sg.removeChild(no) |
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</syntaxhighlight> |
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=== |
===Adding custom widgets to the interface=== |
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You can create custom widgets with Qt designer, transform them into a python script, and then load them into the FreeCAD interface with PyQt4. |
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Vous pouvez créer un widget avec [http://fr.wikipedia.org/wiki/Qt Qt designer], le transformer en Script Python et l'incorporer dans l'interface de FreeCAD avec [[PyQt/fr|PyQt4]].<br> |
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généralement codé comme ceci (il est simple, vous pouvez aussi le coder directement en Python): |
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The python code produced by the Ui python compiler (the tool that converts qt-designer .ui files into python code) generally looks like this (it is simple, you can also code it directly in python): |
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<syntaxhighlight> |
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class myWidget_Ui(object): |
class myWidget_Ui(object): |
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def setupUi(self, myWidget): |
def setupUi(self, myWidget): |
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Line 262: | Line 252: | ||
myWidget.setWindowTitle(QtGui.QApplication.translate("myWidget", "My Widget", None, QtGui.QApplication.UnicodeUTF8)) |
myWidget.setWindowTitle(QtGui.QApplication.translate("myWidget", "My Widget", None, QtGui.QApplication.UnicodeUTF8)) |
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self.label.setText(QtGui.QApplication.translate("myWidget", "Welcome to my new widget!", None, QtGui.QApplication.UnicodeUTF8)) |
self.label.setText(QtGui.QApplication.translate("myWidget", "Welcome to my new widget!", None, QtGui.QApplication.UnicodeUTF8)) |
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</syntaxhighlight> |
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Then, all you need to do is to create a reference to the FreeCAD Qt window, insert a custom widget into it, and "transform" this widget into yours with the Ui code we just made: |
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<syntaxhighlight> |
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app = QtGui.qApp |
app = QtGui.qApp |
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FCmw = app.activeWindow() # the active qt window, = the freecad window since we are inside it |
FCmw = app.activeWindow() # the active qt window, = the freecad window since we are inside it |
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Line 271: | Line 261: | ||
myNewFreeCADWidget.ui.setupUi(myNewFreeCADWidget) # setup the ui |
myNewFreeCADWidget.ui.setupUi(myNewFreeCADWidget) # setup the ui |
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FCmw.addDockWidget(QtCore.Qt.RightDockWidgetArea,myNewFreeCADWidget) # add the widget to the main window |
FCmw.addDockWidget(QtCore.Qt.RightDockWidgetArea,myNewFreeCADWidget) # add the widget to the main window |
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</syntaxhighlight> |
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===Adding a Tab to the Combo View=== |
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*Ici, le code Python est généré par le compilateur '''Ui Python''' avec le module '''pyuic.py''' (il existe aussi pyuic4.py attention à la compatibilité).<br> |
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The following code allows you to add a tab to the FreeCAD ComboView, besides the "Project" and "Tasks" tabs. It also uses the uic module to load an ui file directly in that tab. |
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**Vous pouvez trouver ce fichier à l'emplacement '''"C:\Program Files\FreeCAD0.13\bin\PyQt4\uic"''', |
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<syntaxhighlight> |
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* '''pyuic.py''' est l'outil qui convertit les fichiers qt-designer '''.ui''' (Interface Utilisateur) en fichier '''.py''' (code Python), la ligne de commande dans la console DOS est '''"pyuic -x fichier.ui > fichier.py"'''<br> |
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* vous pouvez créer un fichier .bat pour automatiser la commande: |
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* (avec Python27) copier cette ligne dans un fichier texte, et, le sauver le sous le nom '''"compile.bat"''' |
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@"C:\Python27\python" "C:\Python27\Lib\site-packages\PyQt4\uic\pyuic.py" -x %1.ui > %1.py |
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(au besoin, adaptez le chemin à votre version de Python) |
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Si vous utilisez les outils fourni dans FreeCAD, le code sera, |
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@"C:\Program Files\FreeCAD0.13\bin\python" "C:\Program Files\FreeCAD0.13\bin\PyQt4\uic\pyuic.py" -x %1.ui > %1.py |
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* et tapez à la ligne de commande " '''compile fichier''' " sans extension, le nom "'''fichier'''" entré '''.ui''', sera le nom sortant avec extension '''.py''' |
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* '''ATTENTION: il faut que les fichiers soient présents, et, accessibles, vérifiez que les fichiers sont présents et que les chemins sont justes !''' |
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* pour cet exemple entièrement automatique et simplifié, '''"compile.bat"''' est au même endroit que le '''fichier.ui''' à convertir en '''fichier.py'''<br><br> |
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Autres liens de documentation [http://www.qtrac.eu/pyqtbook.html "Python and Qt"] , sur [http://ogirardot.developpez.com/introduction-pyqt/ Développez.com] et bien d'autres. |
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Vous pouvez installer une version complète de Python qui comprend [http://www.riverbankcomputing.co.uk/software/pyqt/download '''PyQt, Qt Designer ...'''] |
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===Ajout d'une liste déroulante=== |
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Le code suivant vous permet d'ajouter une liste déroulante dans FreeCAD, en plus des onglets "Projet" et "tâches".<br> |
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Il utilise également le module '''uic''' pour charger un fichier '''ui''' directement dans cet onglet. |
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from PyQt4 import QtGui,QtCore |
from PyQt4 import QtGui,QtCore |
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from PyQt4 import uic |
from PyQt4 import uic |
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Line 328: | Line 296: | ||
#tab.removeTab(2) |
#tab.removeTab(2) |
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</syntaxhighlight> |
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=== |
===Opening a custom webpage=== |
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<syntaxhighlight> |
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import WebGui |
import WebGui |
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WebGui.openBrowser("http://www.example.com") |
WebGui.openBrowser("http://www.example.com") |
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</syntaxhighlight> |
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=== |
===Getting the HTML contents of an opened webpage=== |
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<syntaxhighlight> |
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from PyQt4 import QtGui,QtWebKit |
from PyQt4 import QtGui,QtWebKit |
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a = QtGui.qApp |
a = QtGui.qApp |
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Line 342: | Line 312: | ||
html = unicode(v.toHtml()) |
html = unicode(v.toHtml()) |
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print html |
print html |
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</syntaxhighlight> |
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=== |
===Retrieve and use the coordinates of 3 selected points or objects=== |
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<syntaxhighlight> |
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<pre> |
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# -*- coding: utf-8 -*- |
# -*- coding: utf-8 -*- |
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# the line above to put the accentuated in the remarks |
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# la ligne ci dessus permet de mettre des accentué dans les remarques |
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# If this line is missing, an error will be returned |
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# si cette ligne est absente, une erreur sera renvoyée |
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# extract and use the coordinates of 3 objects selected |
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# extraire et utiliser les coordonnées de 3 points séléctionnés |
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import Part, FreeCAD, math, PartGui, FreeCADGui |
import Part, FreeCAD, math, PartGui, FreeCADGui |
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from FreeCAD import Base, Console |
from FreeCAD import Base, Console |
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sel = FreeCADGui.Selection.getSelection() # " sel " |
sel = FreeCADGui.Selection.getSelection() # " sel " contains the items selected |
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if len(sel)!=3 : |
if len(sel)!=3 : |
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# If there are no 3 objects selected, an error is displayed in the report view |
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# s'il n'y a pas 3 objets sélectionnés, une erreur s'affiche dans la Vue rapport |
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# |
# The \r and \n at the end of line mean return and the newline CR + LF. |
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Console.PrintError(" |
Console.PrintError("Select 3 points exactly\r\n") |
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else : |
else : |
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points=[] |
points=[] |
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Line 362: | Line 333: | ||
for pt in points: |
for pt in points: |
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# display of the coordinates in the report view |
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# affichage des coordonnées dans la Vue rapport |
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Console.PrintMessage(str(pt.x)+"\r\n") |
Console.PrintMessage(str(pt.x)+"\r\n") |
||
Console.PrintMessage(str(pt.y)+"\r\n") |
Console.PrintMessage(str(pt.y)+"\r\n") |
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Line 368: | Line 339: | ||
Console.PrintMessage(str(pt[1]) + "\r\n") |
Console.PrintMessage(str(pt[1]) + "\r\n") |
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</syntaxhighlight> |
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</pre> |
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=== |
===List all objects=== |
||
<syntaxhighlight> |
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<pre> |
|||
# -*- coding: utf-8 -*- |
# -*- coding: utf-8 -*- |
||
import FreeCAD,Draft |
|||
# Liste les objets |
|||
# List all objects of the document |
|||
App.ActiveDocument=App.getDocument("Unnamed") |
|||
doc = FreeCAD.ActiveDocument |
doc = FreeCAD.ActiveDocument |
||
print "Nom du document : ", doc.Name |
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objs = FreeCAD.ActiveDocument.Objects |
objs = FreeCAD.ActiveDocument.Objects |
||
#App.Console.PrintMessage(str(objs) + "\n") |
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#print objs |
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# |
#App.Console.PrintMessage(str(len(FreeCAD.ActiveDocument.Objects)) + " Objects" + "\n") |
||
for obj in objs: |
for obj in objs: |
||
a = obj.Name # list the Name of the object (not modifiable) |
|||
b = obj.Label # list the Label of the object (modifiable) |
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try: |
|||
#doc.removeObject("Ortho") # efface l'objet désigné |
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c = obj.LabelText # list the LabeText of the text (modifiable) |
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</pre> |
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App.Console.PrintMessage(str(a) +" "+ str(b) +" "+ str(c) + "\n") # Displays the Name the Label and the text |
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except: |
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App.Console.PrintMessage(str(a) +" "+ str(b) + "\n") # Displays the Name and the Label of the object |
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#doc.removeObject("Box") # Clears the designated object |
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===Fonction résidente avec action au clic de souris=== |
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</syntaxhighlight> |
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<pre> |
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===Function resident with the mouse click action=== |
|||
<syntaxhighlight> |
|||
# -*- coding: utf-8 -*- |
# -*- coding: utf-8 -*- |
||
# |
# causes an action to the mouse click on an object |
||
# |
# This function remains resident (in memory) with the function "addObserver(s)" |
||
# "removeObserver(s) # |
# "removeObserver(s) # Uninstalls the resident function |
||
class SelObserver: |
class SelObserver: |
||
def addSelection(self,doc,obj,sub,pnt): # |
def addSelection(self,doc,obj,sub,pnt): # Selection |
||
App.Console.PrintMessage("addSelection"+ "\n") |
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App.Console.PrintMessage(str(doc)+ "\n") # Name of the document |
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App.Console.PrintMessage(str(obj)+ "\n") # Name of the object |
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App.Console.PrintMessage(str(sub)+ "\n") # The part of the object name |
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App.Console.PrintMessage(str(pnt)+ "\n") # Coordinates of the object |
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App.Console.PrintMessage("______"+ "\n") |
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def removeSelection(self,doc,obj,sub): # |
def removeSelection(self,doc,obj,sub): # Delete the selected object |
||
App.Console.PrintMessage("removeSelection"+ "\n") |
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def setSelection(self,doc): # |
def setSelection(self,doc): # Selection in ComboView |
||
App.Console.PrintMessage("setSelection"+ "\n") |
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def clearSelection(self,doc): # |
def clearSelection(self,doc): # If click on the screen, clear the selection |
||
App.Console.PrintMessage("clearSelection"+ "\n") # If click on another object, clear the previous object |
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s =SelObserver() |
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FreeCADGui.Selection.addObserver(s) # install the function mode resident |
|||
#FreeCADGui.Selection.removeObserver(s) # Uninstall the resident function |
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</syntaxhighlight> |
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===List the components of an object=== |
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s=SelObserver() |
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<syntaxhighlight> |
|||
FreeCADGui.Selection.addObserver(s) # installe la fonction en mode résident |
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#FreeCADGui.Selection.removeObserver(s) # désinstalle la fonction résidente |
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</pre> |
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===Lister les composantes d'un objet=== |
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<pre> |
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# -*- coding: utf-8 -*- |
# -*- coding: utf-8 -*- |
||
# This function list the components of an object |
# This function list the components of an object |
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Line 509: | Line 486: | ||
detail() |
detail() |
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</syntaxhighlight> |
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</pre> |
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===Lister les PropertiesList=== |
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===List the PropertiesList=== |
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<syntaxhighlight> |
<syntaxhighlight> |
||
o = App.ActiveDocument.ActiveObject |
o = App.ActiveDocument.ActiveObject |
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Line 519: | Line 495: | ||
print "Property: ", p, " Value: ", o.getPropertyByName (p) |
print "Property: ", p, " Value: ", o.getPropertyByName (p) |
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</syntaxhighlight> |
</syntaxhighlight> |
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{{docnav|Embedding FreeCAD|Line drawing function}} |
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[[Category:Poweruser Documentation]] |
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[[Category:Python Code]] |
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[[Category:Tutorials]] |
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{{clear}} |
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{{docnav/fr|Embedding FreeCAD/fr|Line drawing function/fr}} |
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<languages/> |
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{{languages/fr | {{en|Code snippets}} {{es|Code snippets/es}} {{it|Code snippets/it}} {{se|Code snippets/se}} }} |
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[[Category:Poweruser Documentation/fr]] |
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[[Category:Python Code/fr]] |
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[[Category:Tutorials/fr]] |
Revision as of 20:26, 15 May 2014
This page contains examples, pieces, chunks of FreeCAD python code collected from users experiences and discussions on the forums. Read and use it as a start for your own scripts...
A typical InitGui.py file
Every module must contain, besides your main module file, an InitGui.py file, responsible for inserting the module in the main Gui. This is an example of a simple one.
class ScriptWorkbench (Workbench):
MenuText = "Scripts"
def Initialize(self):
import Scripts # assuming Scripts.py is your module
list = ["Script_Cmd"] # That list must contain command names, that can be defined in Scripts.py
self.appendToolbar("My Scripts",list)
Gui.addWorkbench(ScriptWorkbench())
A typical module file
This is an example of a main module file, containing everything your module does. It is the Scripts.py file invoked by the previous example. You can have all your custom commands here.
import FreeCAD, FreeCADGui
class ScriptCmd:
def Activated(self):
# Here your write what your ScriptCmd does...
FreeCAD.Console.PrintMessage('Hello, World!')
def GetResources(self):
return {'Pixmap' : 'path_to_an_icon/myicon.png', 'MenuText': 'Short text', 'ToolTip': 'More detailed text'}
FreeCADGui.addCommand('Script_Cmd', ScriptCmd())
Import a new filetype
Making an importer for a new filetype in FreeCAD is easy. FreeCAD doesn't consider that you import data in an opened document, but rather that you simply can directly open the new filetype. So what you need to do is to add the new file extension to FreeCAD's list of known extensions, and write the code that will read the file and create the FreeCAD objects you want:
This line must be added to the InitGui.py file to add the new file extension to the list:
# Assumes Import_Ext.py is the file that has the code for opening and reading .ext files
FreeCAD.addImportType("Your new File Type (*.ext)","Import_Ext")
Then in the Import_Ext.py file:
def open(filename):
doc=App.newDocument()
# here you do all what is needed with filename, read, classify data, create corresponding FreeCAD objects
doc.recompute()
To export your document to some new filetype works the same way, except that you use:
FreeCAD.addExportType("Your new File Type (*.ext)","Export_Ext")
Adding a line
A line simply has 2 points.
import Part,PartGui
doc=App.activeDocument()
# add a line element to the document and set its points
l=Part.Line()
l.StartPoint=(0.0,0.0,0.0)
l.EndPoint=(1.0,1.0,1.0)
doc.addObject("Part::Feature","Line").Shape=l.toShape()
doc.recompute()
Adding a polygon
A polygon is simply a set of connected line segments (a polyline in AutoCAD). It doesn't need to be closed.
import Part,PartGui
doc=App.activeDocument()
n=list()
# create a 3D vector, set its coordinates and add it to the list
v=App.Vector(0,0,0)
n.append(v)
v=App.Vector(10,0,0)
n.append(v)
#... repeat for all nodes
# Create a polygon object and set its nodes
p=doc.addObject("Part::Polygon","Polygon")
p.Nodes=n
doc.recompute()
Adding and removing an object to a group
doc=App.activeDocument()
grp=doc.addObject("App::DocumentObjectGroup", "Group")
lin=doc.addObject("Part::Feature", "Line")
grp.addObject(lin) # adds the lin object to the group grp
grp.removeObject(lin) # removes the lin object from the group grp
Note: You can even add other groups to a group...
Adding a Mesh
import Mesh
doc=App.activeDocument()
# create a new empty mesh
m = Mesh.Mesh()
# build up box out of 12 facets
m.addFacet(0.0,0.0,0.0, 0.0,0.0,1.0, 0.0,1.0,1.0)
m.addFacet(0.0,0.0,0.0, 0.0,1.0,1.0, 0.0,1.0,0.0)
m.addFacet(0.0,0.0,0.0, 1.0,0.0,0.0, 1.0,0.0,1.0)
m.addFacet(0.0,0.0,0.0, 1.0,0.0,1.0, 0.0,0.0,1.0)
m.addFacet(0.0,0.0,0.0, 0.0,1.0,0.0, 1.0,1.0,0.0)
m.addFacet(0.0,0.0,0.0, 1.0,1.0,0.0, 1.0,0.0,0.0)
m.addFacet(0.0,1.0,0.0, 0.0,1.0,1.0, 1.0,1.0,1.0)
m.addFacet(0.0,1.0,0.0, 1.0,1.0,1.0, 1.0,1.0,0.0)
m.addFacet(0.0,1.0,1.0, 0.0,0.0,1.0, 1.0,0.0,1.0)
m.addFacet(0.0,1.0,1.0, 1.0,0.0,1.0, 1.0,1.0,1.0)
m.addFacet(1.0,1.0,0.0, 1.0,1.0,1.0, 1.0,0.0,1.0)
m.addFacet(1.0,1.0,0.0, 1.0,0.0,1.0, 1.0,0.0,0.0)
# scale to a edge langth of 100
m.scale(100.0)
# add the mesh to the active document
me=doc.addObject("Mesh::Feature","Cube")
me.Mesh=m
Adding an arc or a circle
import Part
doc = App.activeDocument()
c = Part.Circle()
c.Radius=10.0
f = doc.addObject("Part::Feature", "Circle") # create a document with a circle feature
f.Shape = c.toShape() # Assign the circle shape to the shape property
doc.recompute()
Accessing and changing representation of an object
Each object in a FreeCAD document has an associated view representation object that stores all the parameters that define how the object appear, like color, linewidth, etc...
gad=Gui.activeDocument() # access the active document containing all
# view representations of the features in the
# corresponding App document
v=gad.getObject("Cube") # access the view representation to the Mesh feature 'Cube'
v.ShapeColor # prints the color to the console
v.ShapeColor=(1.0,1.0,1.0) # sets the shape color to white
Observing mouse events in the 3D viewer via Python
The Inventor framework allows to add one or more callback nodes to the scenegraph of the viewer. By default in FreeCAD one callback node is installed per viewer which allows to add global or static C++ functions. In the appropriate Python binding some methods are provided to make use of this technique from within Python code.
App.newDocument()
v=Gui.activeDocument().activeView()
#This class logs any mouse button events. As the registered callback function fires twice for 'down' and
#'up' events we need a boolean flag to handle this.
class ViewObserver:
def logPosition(self, info):
down = (info["State"] == "DOWN")
pos = info["Position"]
if (down):
FreeCAD.Console.PrintMessage("Clicked on position: ("+str(pos[0])+", "+str(pos[1])+")\n")
o = ViewObserver()
c = v.addEventCallback("SoMouseButtonEvent",o.logPosition)
Now, pick somewhere on the area in the 3D viewer and observe the messages in the output window. To finish the observation just call
v.removeEventCallback("SoMouseButtonEvent",c)
The following event types are supported
- SoEvent -- all kind of events
- SoButtonEvent -- all mouse button and key events
- SoLocation2Event -- 2D movement events (normally mouse movements)
- SoMotion3Event -- 3D movement events (normally spaceball)
- SoKeyboardEvent -- key down and up events
- SoMouseButtonEvent -- mouse button down and up events
- SoSpaceballButtonEvent -- spaceball button down and up events
The Python function that can be registered with addEventCallback() expects a dictionary. Depending on the watched event the dictionary can contain different keys.
For all events it has the keys:
- Type -- the name of the event type i.e. SoMouseEvent, SoLocation2Event, ...
- Time -- the current time as string
- Position -- a tuple of two integers, mouse position
- ShiftDown -- a boolean, true if Shift was pressed otherwise false
- CtrlDown -- a boolean, true if Ctrl was pressed otherwise false
- AltDown -- a boolean, true if Alt was pressed otherwise false
For all button events, i.e. keyboard, mouse or spaceball events
- State -- A string 'UP' if the button was up, 'DOWN' if it was down or 'UNKNOWN' for all other cases
For keyboard events:
- Key -- a character of the pressed key
For mouse button event
- Button -- The pressed button, could be BUTTON1, ..., BUTTON5 or ANY
For spaceball events:
- Button -- The pressed button, could be BUTTON1, ..., BUTTON7 or ANY
And finally motion events:
- Translation -- a tuple of three floats
- Rotation -- a quaternion for the rotation, i.e. a tuple of four floats
Manipulate the scenegraph in Python
It is also possible to get and change the scenegraph in Python, with the 'pivy' module -- a Python binding for Coin.
from pivy.coin import * # load the pivy module
view = Gui.ActiveDocument.ActiveView # get the active viewer
root = view.getSceneGraph() # the root is an SoSeparator node
root.addChild(SoCube())
view.fitAll()
The Python API of pivy is created by using the tool SWIG. As we use in FreeCAD some self-written nodes you cannot create them directly in Python. However, it is possible to create a node by its internal name. An instance of the type 'SoFCSelection' can be created with
type = SoType.fromName("SoFCSelection")
node = type.createInstance()
Adding and removing objects to/from the scenegraph
Adding new nodes to the scenegraph can be done this way. Take care of always adding a SoSeparator to contain the geometry, coordinates and material info of a same object. The following example adds a red line from (0,0,0) to (10,0,0):
from pivy import coin
sg = Gui.ActiveDocument.ActiveView.getSceneGraph()
co = coin.SoCoordinate3()
pts = [[0,0,0],[10,0,0]]
co.point.setValues(0,len(pts),pts)
ma = coin.SoBaseColor()
ma.rgb = (1,0,0)
li = coin.SoLineSet()
li.numVertices.setValue(2)
no = coin.SoSeparator()
no.addChild(co)
no.addChild(ma)
no.addChild(li)
sg.addChild(no)
To remove it, simply issue:
sg.removeChild(no)
Adding custom widgets to the interface
You can create custom widgets with Qt designer, transform them into a python script, and then load them into the FreeCAD interface with PyQt4.
The python code produced by the Ui python compiler (the tool that converts qt-designer .ui files into python code) generally looks like this (it is simple, you can also code it directly in python):
class myWidget_Ui(object):
def setupUi(self, myWidget):
myWidget.setObjectName("my Nice New Widget")
myWidget.resize(QtCore.QSize(QtCore.QRect(0,0,300,100).size()).expandedTo(myWidget.minimumSizeHint())) # sets size of the widget
self.label = QtGui.QLabel(myWidget) # creates a label
self.label.setGeometry(QtCore.QRect(50,50,200,24)) # sets its size
self.label.setObjectName("label") # sets its name, so it can be found by name
def retranslateUi(self, draftToolbar): # built-in QT function that manages translations of widgets
myWidget.setWindowTitle(QtGui.QApplication.translate("myWidget", "My Widget", None, QtGui.QApplication.UnicodeUTF8))
self.label.setText(QtGui.QApplication.translate("myWidget", "Welcome to my new widget!", None, QtGui.QApplication.UnicodeUTF8))
Then, all you need to do is to create a reference to the FreeCAD Qt window, insert a custom widget into it, and "transform" this widget into yours with the Ui code we just made:
app = QtGui.qApp
FCmw = app.activeWindow() # the active qt window, = the freecad window since we are inside it
myNewFreeCADWidget = QtGui.QDockWidget() # create a new dckwidget
myNewFreeCADWidget.ui = myWidget_Ui() # load the Ui script
myNewFreeCADWidget.ui.setupUi(myNewFreeCADWidget) # setup the ui
FCmw.addDockWidget(QtCore.Qt.RightDockWidgetArea,myNewFreeCADWidget) # add the widget to the main window
Adding a Tab to the Combo View
The following code allows you to add a tab to the FreeCAD ComboView, besides the "Project" and "Tasks" tabs. It also uses the uic module to load an ui file directly in that tab.
from PyQt4 import QtGui,QtCore
from PyQt4 import uic
#from PySide import QtGui,QtCore
def getMainWindow():
"returns the main window"
# using QtGui.qApp.activeWindow() isn't very reliable because if another
# widget than the mainwindow is active (e.g. a dialog) the wrong widget is
# returned
toplevel = QtGui.qApp.topLevelWidgets()
for i in toplevel:
if i.metaObject().className() == "Gui::MainWindow":
return i
raise Exception("No main window found")
def getComboView(mw):
dw=mw.findChildren(QtGui.QDockWidget)
for i in dw:
if str(i.objectName()) == "Combo View":
return i.findChild(QtGui.QTabWidget)
raise Exception("No tab widget found")
mw = getMainWindow()
tab = getComboView(getMainWindow())
tab2=QtGui.QDialog()
tab.addTab(tab2,"A Special Tab")
uic.loadUi("/myTaskPanelforTabs.ui",tab2)
tab2.show()
#tab.removeTab(2)
Opening a custom webpage
import WebGui
WebGui.openBrowser("http://www.example.com")
Getting the HTML contents of an opened webpage
from PyQt4 import QtGui,QtWebKit
a = QtGui.qApp
mw = a.activeWindow()
v = mw.findChild(QtWebKit.QWebFrame)
html = unicode(v.toHtml())
print html
Retrieve and use the coordinates of 3 selected points or objects
# -*- coding: utf-8 -*-
# the line above to put the accentuated in the remarks
# If this line is missing, an error will be returned
# extract and use the coordinates of 3 objects selected
import Part, FreeCAD, math, PartGui, FreeCADGui
from FreeCAD import Base, Console
sel = FreeCADGui.Selection.getSelection() # " sel " contains the items selected
if len(sel)!=3 :
# If there are no 3 objects selected, an error is displayed in the report view
# The \r and \n at the end of line mean return and the newline CR + LF.
Console.PrintError("Select 3 points exactly\r\n")
else :
points=[]
for obj in sel:
points.append(obj.Shape.BoundBox.Center)
for pt in points:
# display of the coordinates in the report view
Console.PrintMessage(str(pt.x)+"\r\n")
Console.PrintMessage(str(pt.y)+"\r\n")
Console.PrintMessage(str(pt.z)+"\r\n")
Console.PrintMessage(str(pt[1]) + "\r\n")
List all objects
# -*- coding: utf-8 -*-
import FreeCAD,Draft
# List all objects of the document
doc = FreeCAD.ActiveDocument
objs = FreeCAD.ActiveDocument.Objects
#App.Console.PrintMessage(str(objs) + "\n")
#App.Console.PrintMessage(str(len(FreeCAD.ActiveDocument.Objects)) + " Objects" + "\n")
for obj in objs:
a = obj.Name # list the Name of the object (not modifiable)
b = obj.Label # list the Label of the object (modifiable)
try:
c = obj.LabelText # list the LabeText of the text (modifiable)
App.Console.PrintMessage(str(a) +" "+ str(b) +" "+ str(c) + "\n") # Displays the Name the Label and the text
except:
App.Console.PrintMessage(str(a) +" "+ str(b) + "\n") # Displays the Name and the Label of the object
#doc.removeObject("Box") # Clears the designated object
Function resident with the mouse click action
# -*- coding: utf-8 -*-
# causes an action to the mouse click on an object
# This function remains resident (in memory) with the function "addObserver(s)"
# "removeObserver(s) # Uninstalls the resident function
class SelObserver:
def addSelection(self,doc,obj,sub,pnt): # Selection
App.Console.PrintMessage("addSelection"+ "\n")
App.Console.PrintMessage(str(doc)+ "\n") # Name of the document
App.Console.PrintMessage(str(obj)+ "\n") # Name of the object
App.Console.PrintMessage(str(sub)+ "\n") # The part of the object name
App.Console.PrintMessage(str(pnt)+ "\n") # Coordinates of the object
App.Console.PrintMessage("______"+ "\n")
def removeSelection(self,doc,obj,sub): # Delete the selected object
App.Console.PrintMessage("removeSelection"+ "\n")
def setSelection(self,doc): # Selection in ComboView
App.Console.PrintMessage("setSelection"+ "\n")
def clearSelection(self,doc): # If click on the screen, clear the selection
App.Console.PrintMessage("clearSelection"+ "\n") # If click on another object, clear the previous object
s =SelObserver()
FreeCADGui.Selection.addObserver(s) # install the function mode resident
#FreeCADGui.Selection.removeObserver(s) # Uninstall the resident function
List the components of an object
# -*- coding: utf-8 -*-
# This function list the components of an object
# and extract this object its XYZ coordinates,
# its edges and their lengths center of mass and coordinates
# its faces and their center of mass
# its faces and their surfaces and coordinates
# 8/05/2014
import Draft,Part
def detail():
sel = FreeCADGui.Selection.getSelection() # Select an object
if len(sel) != 0: # If there is a selection then
Vertx=[]
Edges=[]
Faces=[]
compt_V=0
compt_E=0
compt_F=0
pas =0
perimetre = 0.0
EdgesLong = []
# Displays the "Name" and the "Label" of the selection
App.Console.PrintMessage("Selection > " + str(sel[0].Name) + " " + str(sel[0].Label) +"\n"+"\n")
for j in enumerate(sel[0].Shape.Edges): # Search the "Edges" and their lengths
compt_E+=1
Edges.append("Edge%d" % (j[0]+1))
EdgesLong.append(str(sel[0].Shape.Edges[compt_E-1].Length))
perimetre += (sel[0].Shape.Edges[compt_E-1].Length) # calculates the perimeter
# Displays the "Edge" and its length
App.Console.PrintMessage("Edge"+str(compt_E)+" Length > "+str(sel[0].Shape.Edges[compt_E-1].Length)+"\n")
# Displays the "Edge" and its center mass
App.Console.PrintMessage("Edge"+str(compt_E)+" Center > "+str(sel[0].Shape.Edges[compt_E-1].CenterOfMass)+"\n")
num = sel[0].Shape.Edges[compt_E-1].Vertexes[0]
Vertx.append("X1: "+str(num.Point.x))
Vertx.append("Y1: "+str(num.Point.y))
Vertx.append("Z1: "+str(num.Point.z))
# Displays the coordinates 1
App.Console.PrintMessage("X1: "+str(num.Point[0])+" Y1: "+str(num.Point[1])+" Z1: "+str(num.Point[2])+"\n")
try:
num = sel[0].Shape.Edges[compt_E-1].Vertexes[1]
Vertx.append("X2: "+str(num.Point.x))
Vertx.append("Y2: "+str(num.Point.y))
Vertx.append("Z2: "+str(num.Point.z))
except:
Vertx.append("-")
Vertx.append("-")
Vertx.append("-")
# Displays the coordinates 2
App.Console.PrintMessage("X2: "+str(num.Point[0])+" Y2: "+str(num.Point[1])+" Z2: "+str(num.Point[2])+"\n")
App.Console.PrintMessage("\n")
App.Console.PrintMessage("Perimeter of the form : "+str(perimetre)+"\n")
App.Console.PrintMessage("\n")
FacesSurf = []
for j in enumerate(sel[0].Shape.Faces): # Search the "Faces" and their surface
compt_F+=1
Faces.append("Face%d" % (j[0]+1))
FacesSurf.append(str(sel[0].Shape.Faces[compt_F-1].Area))
# Displays 'Face' and its surface
App.Console.PrintMessage("Face"+str(compt_F)+" > Surface "+str(sel[0].Shape.Faces[compt_F-1].Area)+"\n")
# Displays 'Face' and its CenterOfMass
App.Console.PrintMessage("Face"+str(compt_F)+" > Center "+str(sel[0].Shape.Faces[compt_F-1].CenterOfMass)+"\n")
# Displays 'Face' and its Coordinates
FacesCoor = []
fco = 0
for f0 in sel[0].Shape.Faces[compt_F-1].Vertexes: # Search the Vertexes of the face
fco += 1
FacesCoor.append("X"+str(fco)+": "+str(f0.Point.x))
FacesCoor.append("Y"+str(fco)+": "+str(f0.Point.y))
FacesCoor.append("Z"+str(fco)+": "+str(f0.Point.z))
# Displays 'Face' and its Coordinates
App.Console.PrintMessage("Face"+str(compt_F)+" > Coordinate"+str(FacesCoor)+"\n")
# Displays 'Face' and its Volume
App.Console.PrintMessage("Face"+str(compt_F)+" > Volume "+str(sel[0].Shape.Faces[compt_F-1].Volume)+"\n")
App.Console.PrintMessage("\n")
# Displays the total surface of the form
App.Console.PrintMessage("Surface of the form : "+str(sel[0].Shape.Area)+"\n")
# Displays the total Volume of the form
App.Console.PrintMessage("Volume of the form : "+str(sel[0].Shape.Volume)+"\n")
detail()
List the PropertiesList
o = App.ActiveDocument.ActiveObject
op = o.PropertiesList
for p in op:
print "Property: ", p, " Value: ", o.getPropertyByName (p)