Drawing Module/de

Das Zeichnungsmodul erlaubt Ihnen, Ihre 3. Arbeit zu Papier zu bringen. Das bedeutet, gewählte Ansichten von Ihren Modellen in einem 2D-Fenster anzeigen und dieses Fenster in eine Zeichnung einzufügen, zum Beispiel in ein Blatt mit einer Umrandung, einen Titel und Ihrem Logo und druckt schließlich das Blatt. Das Zeichnungsmodul wird zurzeit noch bearbeitet und ist mehr oder weniger eine Technologievorschau!

GUI Werkzeuge


In diesem Bild sehen Sie die wichtigsten Konzepte des Zeichnungs-Modul. Das Dokument enthält einen Gestalt-Gegenstand (Schenkel), den wir zu einer Zeichnung herausziehen wollen. Deshalb wird eine "Seite" erstellt. Eine Seite wird durch eine Schablone, in diesem Fall die "A3_Landscape" Schablone realisiert. Die Vorlage ist ein SVG-Dokument, das Ihre üblichen Blatt-Rahmen und Ihr Logo beinhaltet, oder Ihre Präsentations-Standards erfüllt.

In diese Seite können wir eine oder mehrere Ansichten einfügen. Jede Ansicht hat eine Position auf der Seite (Eigenschaften X, Y), einen Skalen-Faktor (Eigene Skalierung) und zusätzliche Eigenschaften. Jedes Mal, wenn sich die Seite oder die Ansicht oder das referenzierte Objekt ändert, wird die Seite regeneriert, und die Seitenanzeige aktualisiert.

Scripting
At the moment the end user(GUI) workflow are very limited, so the scripting API is more interesting. Here follows examples on how to use the scripting API of the drawing module.

Simple example
<!-- First of all you need the Part and the Drawing module: import FreeCAD, Part, Drawing Create a small sample part Part.show(Part.makeBox(100,100,100).cut(Part.makeCylinder(80,100)).cut(Part.makeBox(90,40,100)).cut(Part.makeBox(20,85,100))) Direct projection. The G0 means hard edge, the G1 is tangent continuous. Shape = App.ActiveDocument.Shape.Shape [visibleG0,visibleG1,hiddenG0,hiddenG1] = Drawing.project(Shape) print "visible edges:", len(visibleG0.Edges) print "hidden edges:", len(hiddenG0.Edges) Everything was projected on the Z-plane: print "Bnd Box shape: X=",Shape.BoundBox.XLength," Y=",Shape.BoundBox.YLength," Z=",Shape.BoundBox.ZLength print "Bnd Box project: X=",visibleG0.BoundBox.XLength," Y=",visibleG0.BoundBox.YLength," Z=",visibleG0.BoundBox.ZLength Different projection vector [visibleG0,visibleG1,hiddenG0,hiddenG1] = Drawing.project(Shape,App.Vector(1,1,1)) Project to SVG resultSVG = Drawing.projectToSVG(Shape,App.Vector(1,1,1)) print resultSVG

The parametric way
Create the body App.ActiveDocument.addObject("Part::Box","Box") App.ActiveDocument.Box.Length=100.00 App.ActiveDocument.Box.Width=100.00 App.ActiveDocument.Box.Height=100.00 App.ActiveDocument.addObject("Part::Box","Box1") App.ActiveDocument.Box1.Length=90.00 App.ActiveDocument.Box1.Width=40.00 App.ActiveDocument.Box1.Height=100.00 App.ActiveDocument.addObject("Part::Box","Box2") App.ActiveDocument.Box2.Length=20.00 App.ActiveDocument.Box2.Width=85.00 App.ActiveDocument.Box2.Height=100.00 App.ActiveDocument.addObject("Part::Cylinder","Cylinder") App.ActiveDocument.Cylinder.Radius=80.00 App.ActiveDocument.Cylinder.Height=100.00 App.ActiveDocument.Cylinder.Angle=360.00 App.activeDocument.addObject("Part::Fuse","Fusion") App.activeDocument.Fusion.Base = App.activeDocument.Cylinder App.activeDocument.Fusion.Tool = App.activeDocument.Box1 App.activeDocument.addObject("Part::Fuse","Fusion1") App.activeDocument.Fusion1.Base = App.activeDocument.Box2 App.activeDocument.Fusion1.Tool = App.activeDocument.Fusion App.activeDocument.addObject("Part::Cut","Shape") App.activeDocument.Shape.Base = App.activeDocument.Box App.activeDocument.Shape.Tool = App.activeDocument.Fusion1 Gui.activeDocument.Box.Visibility=False Gui.activeDocument.Box1.Visibility=False Gui.activeDocument.Box2.Visibility=False Gui.activeDocument.Cylinder.Visibility=False Gui.activeDocument.Fusion.Visibility=False Gui.activeDocument.Fusion1.Visibility=False
 * 1) Create three boxes and a cylinder
 * 1) Fuse two boxes and the cylinder
 * 1) Cut the fused shapes from the first box
 * 1) Hide all the intermediate shapes

Insert a Page object and assign a template App.activeDocument.addObject('Drawing::FeaturePage','Page') App.activeDocument.Page.Template = App.getResourceDir+'Mod/Drawing/Templates/A3_Landscape.svg'

Create a view on the "Shape" object, define the position and scale and assign it to a Page App.activeDocument.addObject('Drawing::FeatureViewPart','View') App.activeDocument.View.Source = App.activeDocument.Shape App.activeDocument.View.Direction = (0.0,0.0,1.0) App.activeDocument.View.X = 10.0 App.activeDocument.View.Y = 10.0 App.activeDocument.Page.addObject(App.activeDocument.View)

Create a second view on the same object but this time the view will be rotated by 90 degrees. App.activeDocument.addObject('Drawing::FeatureViewPart','ViewRot') App.activeDocument.ViewRot.Source = App.activeDocument.Shape App.activeDocument.ViewRot.Direction = (0.0,0.0,1.0) App.activeDocument.ViewRot.X = 290.0 App.activeDocument.ViewRot.Y = 30.0 App.activeDocument.ViewRot.Scale = 1.0 App.activeDocument.ViewRot.Rotation = 90.0 App.activeDocument.Page.addObject(App.activeDocument.ViewRot)

Create a third view on the same object but with an isometric view direction. The hidden lines are activated too. App.activeDocument.addObject('Drawing::FeatureViewPart','ViewIso') App.activeDocument.ViewIso.Source = App.activeDocument.Shape App.activeDocument.ViewIso.Direction = (1.0,1.0,1.0) App.activeDocument.ViewIso.X = 335.0 App.activeDocument.ViewIso.Y = 140.0 App.activeDocument.ViewIso.ShowHiddenLines = True App.activeDocument.Page.addObject(App.activeDocument.ViewIso) Change something and update. The update process changes the view and the page. App.activeDocument.View.X = 30.0 App.activeDocument.View.Y = 30.0 App.activeDocument.View.Scale = 1.5 App.activeDocument.recompute

Accessing the bits and pieces
Get the SVG fragment of a single view ViewSVG = App.activeDocument.View.ViewResult print ViewSVG Get the whole result page (it's a file in the document's temporary directory, only read permission) print "Resulting SVG document: ",App.activeDocument.Page.PageResult file = open(App.activeDocument.Page.PageResult,"r") print "Result page is ",len(file.readlines)," lines long"

Important: free the file! del file Insert a view with your own content: App.activeDocument.addObject('Drawing::FeatureView','ViewSelf') App.activeDocument.ViewSelf.ViewResult = """       """ App.activeDocument.Page.addObject(App.activeDocument.ViewSelf) App.activeDocument.recompute del Shape,ViewSVG, resultSVG That leads to the following result:



Templates
FreeCAD comes bundled with a set of default templates, but you can find more on the Drawing templates page. //-->