topic Re: Core 3D graphics bug for Hidden edges................????????????? in Fusion Support Forum

Core 3D graphics bug for Hidden edges................?????????????

johnptc314159 — Mon, 30 Nov 2020 21:31:12 GMT

so in the present build this is still a major bug.

sometimes the walls of a hole show up in a drawing and sometimes they dont in a model set to show hidden edges.

what is the eta for the fix ???

maybe spend less time on frills eg electronics and generative design and fix the basic functions instead 🙂 this time allocation problem of resources seems to be an ongoing problem in fusion 😞

Re: Core 3D graphics bug for Hidden edges................?????????????

jhackney1972 — Mon, 30 Nov 2020 21:52:23 GMT

Could you highlight the holes, in your PDF attachment, in the area that they are not showing up?

Re: Core 3D graphics bug for Hidden edges................?????????????

johnptc314159 — Mon, 30 Nov 2020 22:00:01 GMT

there are four holes shown in the drawing 4 set of parallel lines a few degrees off vertical. you cant see them in the normal model using shaded with all hidden edges

johnmodel

Re: Core 3D graphics bug for Hidden edges................?????????????

johnptc314159 — Mon, 30 Nov 2020 22:17:47 GMT

holes circled in yellow 🙂

Re: Core 3D graphics bug for Hidden edges................?????????????

jhackney1972 — Mon, 30 Nov 2020 22:30:21 GMT

Well in my opinion, the shaded with hidden edges is working correctly. A hole surface does not generate an edge, in CAD terms. You may consider it an edge but the application is seeing it as a continuous curved surface. The edges of the holes and edges of the block, which are true edges show up as they should.

Re: Core 3D graphics bug for Hidden edges................?????????????

johnptc314159 — Mon, 30 Nov 2020 23:22:07 GMT

if what you say about fusion is correct why does it show as a hidden line in the drawing.......its the same surface ??

Re: Core 3D graphics bug for Hidden edges................?????????????

jeff_strater — Mon, 30 Nov 2020 23:25:47 GMT

drawings uses a more complex (and WAY more expensive) algorithm for drawing hidden lines. If Design mode used that approach, Fusion would be unusable in hidden line mode.

Re: Core 3D graphics bug for Hidden edges................?????????????

johnptc314159 — Tue, 01 Dec 2020 00:21:45 GMT

i thought that was how inventor worked...i certainly could have mis-rembered.

its is unfortunate if that is the case it really makes for alot of extra work in the design phase.

i will get to inventor and check my memory 🙂

Re: Core 3D graphics bug for Hidden edges................?????????????

jeff_strater — Tue, 01 Dec 2020 01:25:29 GMT

@johnptc314159 - you are correct. Inventor does show those edges. So, my answer was incorrect. I apologize for that. I'm not sure, then, why Fusion doesn't show those silhouette edges in hidden line mode...

Re: Core 3D graphics bug for Hidden edges................?????????????

jeff_strater — Tue, 01 Dec 2020 03:36:42 GMT

further info. I was not completely wrong - only maybe 75% wrong. There is definitely a performance component to this. It turns out that Inventor has written some special-case code to deal with it efficiently, and that is being absorbed into the graphics system, and Fusion plans on moving to that version fairly soon. So, hopefully you will see silhouette edges at some point in the future...

Re: Core 3D graphics bug for Hidden edges................?????????????

johnptc314159 — Tue, 01 Dec 2020 16:07:06 GMT

it seems fusion must be close. if you make the material transparent the hole walls become visible.

if you run thru the various choices in both the design mode and drawing mode the results seem very odd to me.....hope someone has the time to sort this out..........seems pretty fundamental to fusions basic operation in cad/cam

best

john