Cplane changes randomely per object

perhaps this is a new feature i have not got used to, but in the latest rhino 8 beta, for mac on an M2 pro macbook 14", im having an issue where every other object that i select will change the grid orientation in the current active view.

my modeling style i do not use these custom c planes or named views, and im unsure how to fix this behavior, as now the gumball wants to constantly follow irregular axis rather than world axis.

I know this can be useful but im also pulling my hair out trying to understand exactly how c plane behavior works in rhino 8.

the thing is it seems to randomly select a custom origin and orientation per object based on a randomly selected straight curve in space or plane, i never set these as a named view or anything, just sweeping surfaces and creating curves…

here are two screenshots, one where I have nothing selected, and you can see the grid in top right. then i select a flat projected closed loop curve, and the grid re-orients to one of the sloped edges…

would be super useful feature if i were to manually select the orientation per object and save it or select when this were to happen, but this is totally killing my workflow.


Hello - this can be controlled from the AutoCPlane setting in the status bar at the bottom of the Rhino window.

-Pascal

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Wow that fixed it no wonder! its a neat feature if it could be tamed, is this enabled by default or did i misclick it at some point?

i need to read up more, but is there any way to manually set a per object orientation or is auto toggle the only way?

Hello - it is enabled by default to that people will encounter it and complain if they do not like how it works. It is very handy in conjunction with the V8 PushPull workflow.

You can always set a ‘normal’ cplane with CPlane command > Object or Surface options.

-Pascal

ah… I think i understand what you mean, and would probably make a similar decision but the reasoning that you want people to complain seems a bit contrived haha.

I will definitely keep this in mind for the push pull workflow, and i could see this being useful, just was pretty jarring at first. to me this would be way more useful if you could then just isolate the auto cplane to only a specific selection filter.

if i select individual faces or planar surfaces, awesome, otherwise no thank you