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Manipulating a component's origin

Message 1 of 3
616 Views, 2 Replies

Manipulating a component's origin

is there a way to translate and rotate an orgin of a component using the python API.

I have code to reorient the coordinate system of an occurance but it doesn't seem to do anything to the actual component:


def translateToNewOrigin(root, newOrigin, newZaxis):
        zAxis = newZaxis
        (x,y,z)= axes(zAxis)
        xAxis = adsk.core.Vector3D.create(x[0],x[1],x[2])
        yAxis = adsk.core.Vector3D.create(y[0],y[1],y[2])
        zAxis = adsk.core.Vector3D.create(z[0],z[1],z[2])
#        reportMessageBox("Axes: \nx:{}\ny:{}\nz:{}",(x,y,z))
        for occurrence in design.rootComponent.allOccurrencesByComponent(root):
    #        reportMessageBox("occurance: {}", (
            # Get the current transform of the occurrence
            transform = occurrence.transform
    #        reportMessageBox("transform: {}", (transform.asArray()))
            coordinateSystem = transform.getAsCoordinateSystem()
    #        reportMessageBox("system: {}, {}, {},{};", coordinateSystem)
    #        reportMessageBox("new Transform: {}", (transform.asArray()))
            # Set the tranform data back to the occurrence 
            occurrence.transform = transform
    #        reportMessageBox("result: {}", (
Message 2 of 3
in reply to: nnamfoh

I didn't follow how you intend to define your new coordinate system.  Just the origin and Z axis isn't enough because the part can still spin around the Z axis.  Moving an occurrence is certainly possible.  Below is a variation of your program that just uses a point to define the new origin.


def testTranslate():
    ui = None
        app = adsk.core.Application.get()
        ui  = app.userInterface
        design = app.activeProduct
        rootComp = adsk.fusion.Component.cast(design.rootComponent)
        newOrigin = adsk.core.Point3D.create(1,1,1)
        translateToNewOrigin(design, newOrigin)
        if ui:

def translateToNewOrigin(design, newOrigin):
    root = adsk.fusion.Component.cast(design.rootComponent)
    # Iterate through the occurrences in the root component.
    for occurrence in root.occurrences:
        # Get the current transform of the occurrence.
        trans = adsk.core.Matrix3D.cast(occurrence.transform)
        # Change the translation portion of the matrix to account for the new origin.
        trans.translation = newOrigin.asVector()

        # Set the transform of the occurrence.
        occurrence.transform = trans

    # Snapshot the changes.

Brian Ekins
Inventor and Fusion 360 API Expert
Mod the Machine blog
Message 3 of 3
in reply to: ekinsb

I have read many times that the Fusion GUI does not allow any manipulation of a component's origin. Does your post mean that you can override this limitation by directly manipulating a component's origin programmatically through the Python interface? Does the Python interface, therefore, expose functionalities that are hidden from the GUI?

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