Ben Wingrove Posted November 26, 2017 Share Posted November 26, 2017 I am trying to make a simple Marionette to rotate certain symbols by name in my drawing, every time I run the script it is offsetting the center of the symbol and moving it around, I have tried different nodes to get the center but they all seem to have the same effect!! I have been trying to get this to work for a few days now and could really do with some pointers. Thanks B Quote Link to comment
Vectorworks, Inc Employee Stephan Moenninghoff Posted November 27, 2017 Vectorworks, Inc Employee Share Posted November 27, 2017 (edited) Interesting. Have you tried using the Rotate node instead of "Set 3D Rotation"? I think you don't actually need to find the symbol centre either, the rotate node will rotate the symbol about its centre if no rotation pivot is provided. Edited November 27, 2017 by Stephan Moenninghoff Quote Link to comment
Patrick Winkler Posted November 27, 2017 Share Posted November 27, 2017 This node gives you the center of the Bounding Box. ''' Changed on 22.02.2016 : Wrong Var was used in the calcul. of the center Changed on 04.04.2016 : Created the 'def GetBBoxN (h)' Changed on 18.04.2016 : set Initialize function: Marionette.InitializeView Changed on 27.11.2017 : Force TopView author: patrick winkler ''' import vs import Marionette @Marionette.NodeDefinition class Params(metaclass = Marionette.OrderedClass): this = Marionette.Node( 'Get Bounding Box' ) this.SetDescription("Returns the bounding box's coordinates of the projection of an object on the screen plane") # IMPORTANT: SetThe View to Top while Execution - The BB Values are otherwise incorrect!!!! this.SetInitFunc(Marionette.InitializeView) this.SetFinalFunc (Marionette.RestoreView) obj = Marionette.PortIn(vs.Handle(0)) obj.SetDescription( "The input object" ) topL2D = Marionette.PortOut() topL2D.SetDescription( "The top left coordinates of the bounding box" ) botR2D = Marionette.PortOut() botR2D.SetDescription( "The bottom right coordinatesr of the bounding box" ) width = Marionette.PortOut() width.SetDescription("The width of the bounding box.") height = Marionette.PortOut() height.SetDescription("The height of the bounding box.") center = Marionette.PortOut() center.SetDescription("The centerpoint of the bounding box.") def RunNode(self): def GetBBoxN (h, top_view = True): ''' Returns top left point, bottom right point, width, height and center of the object bounding box (as tuple). IMPORTANT: The result depends on the view in VW if top_view is False. ''' if top_view: # Change the view to Top temporarily orig_view = vs.GetView() vs.SetView(0, 0, 0, 0, 0, 0) box = vs.GetBBox(h) topL2D = box[0] botR2D = box[1] center = [None, None] BB_width = botR2D[0] - topL2D[0] BB_height = topL2D[1] - botR2D[1] center[0] = topL2D[0] + BB_width / 2 center[1] = topL2D[1] - BB_height / 2 center = tuple (center) if top_view: # Restore the original view xAngle, yAngle, zAngle, offset = orig_view xDistance, yDistance, zDistance = offset vs.SetView(xAngle, yAngle, zAngle, xDistance, yDistance, zDistance) return (topL2D, botR2D, BB_width, BB_height, center) obj = self.Params.obj.value if not obj: raise ValueError('No object handle was provided!') topL2D, botR2D, BB_width, BB_height, center = GetBBoxN(obj, top_view = True) # SET THE OUT PORTS self.Params.topL2D.value = topL2D self.Params.botR2D.value = botR2D self.Params.width.value = BB_width self.Params.height.value = BB_height self.Params.center.value = tuple (center) Quote Link to comment
Patrick Winkler Posted November 27, 2017 Share Posted November 27, 2017 (edited) To make sure the center stays at the same location the bounding box must always have the same size. This can be accomplished by palcing an invisible circle into the symbol. ( set fill and penstyle to empty.) Edited November 28, 2017 by Patrick Winkler Quote Link to comment
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