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Cylinder shapes are not smooth - CADRAYS/FREECAD

Open Cascade ApplicationsTue, 10/11/2022 - 15:131 reply

QuestionAuthorTue, 10/11/2022 - 15:13

Hi We are using freecad and exporting our models in .STEP format. And we are rendering models on cadrays but our models in cylinder shape and on freecad its smooth but when we are open this models on cadrays its not smooth.Why and how we can fix it? In first picture model in freecad and its not smooth.And we change Edit > Preferences > Part Design (icon in left pane) > Shape view (tab at top of right pane) and changing the "Maximum deviation depending on..." setting from the default setting of 0.5 % to 0.1% and it comes picture 2.But nothing changes on cadrays picture 3 (after freecad_smooth).Help please

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01Commenter-1Wed, 10/12/2022 - 19:57

Triangulation parameters are not stored within STEP file, so that these manipulations in FreeCAD has no effect on produced STEP. What you want is probably adjusting triangulation parameters in CADRays. However, this application doesn't expose these parameters to user interface.

But CADRays is based on Draw Harness, so that you may follow it's official documentation to make more things, if you are not afraid of console input. For instance, command vdefaults could be used to change default meshing parameters (`vdefaults -angDefl 10` to change angular deflection to 10 degrees instead of default 20; you'll need re-importing model afterwards or redisplaying it 3D viewer) or command `incmesh` combined with `vdefaults -autoTriang 0` for tuning more meshing parameters.

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