Slow Wireframe model or assembly

[pnos]

Why is creo useless in wireframe mode when rotating the model or assembly.

Only when I turn off show silhouette edges so a little goes? Thanks

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[dschenken]

Because the graphics processor is much much faster at manipulating shaded triangles than it is at drawing lots of line segments. MUCH faster. See the lack of wire frame video games as a general reference.

It's even worse at hidden-line computations as these not only have a lot of edges, it has to constantly calculate the bits that are visible from those that aren't and given them a different appearance.

[pnos]

I work in Catia and still there is not such a problem

[dschenken]

Catia was originally a wire-frame only modeler. No doubt they wrote a lot of software to handle wireframe or wrote software to maintain a capability the existing users were used to when they migrated to common hardware.

[JonathanHodgson]

I believe that pre-Creo at least, wireframe / hidden line was handled by the CPU and shaded was handled by the GPU (which for this type of task at least, is much more powerful).

On the Catia vs Creo subject, I've noticed that Catia seems able to spin much larger models / assemblies (with very high surface counts) with little or no apparent slowdown; although Creo to me seems to be noticeably smoother than Wildfire was.