topic Re: Coordinates on sketch on YZ plane in Fusion API and Scripts Forum

Coordinates on sketch on YZ plane

Anonymous — Fri, 25 Sep 2020 11:12:07 GMT

I created a sketch on YZ Plane.

When I add a circle to the sketch I have troubles on coordinates of the center point

design = app.activeProduct rootComp = design.rootComponent keyCapOcc = rootComp.occurrences.addNewComponent(adsk.core.Matrix3D.create()) keyCap = keyCapOcc.component sketches = keyCap.sketches yzPlane = keyCap.yZConstructionPlane sketch = sketches.add(yzPlane) circles = sk.sketchCurves.sketchCircles pt = adsk.core.Point3D.create(0, 1, 1) circles.addByCenterRadius(pt, 2)

When the circle is drawn, the center is on (1, 1, 0) on the component based coordinates.

For sure I'm missing something, maybe I need some transformation......

Re: Coordinates on sketch on YZ plane

OceanHydroAU — Fri, 25 Sep 2020 11:56:14 GMT

I'm pretty sure sketches use their own coordinate system (XY?) independent of the plane you put them on. They're translated onto the parent plane (YZ in your case) of the sketch afterwards.

Re: Coordinates on sketch on YZ plane

Anonymous — Fri, 25 Sep 2020 12:13:56 GMT

This is my opnion too.

The ploblem is how to get and trasform this coordinates system.

It should be a pretty common operation in creating sketches....

Re: Coordinates on sketch on YZ plane

Anonymous — Fri, 25 Sep 2020 12:56:30 GMT

I found the solution myself:

pt = sk.modelToSketchSpace(adsk.core.Point3D.create(0, 1, 1))

Re: Coordinates on sketch on YZ plane

OceanHydroAU — Fri, 25 Sep 2020 15:53:04 GMT

Thanks for posting!! As it happens, I've got the exact same issue, and your solution looks like a life-saver!! (I'm creating 3d sketch elements, on any plane, in any orientation - total mind bender...)