Forum: Carrara


Subject: Spline Modeler Question

mathman opened this issue on Apr 11, 2009 · 4 posts


mathman posted Sat, 11 April 2009 at 6:24 PM

Hi all,

When selecting the oval tool and then drawing out the shape, I have noticed that it starts off as a 4-sided polygon and increases the number of sides as you drag out.

The end result is that you get a less than perfect circle, i.e. what it really is is a many-sided polygon. Which doesn't look good.

Is there a way in the spline modeler of drawing out a circle/oval with perfect curvature, as opposed to a many-sided polygoin approximating a circle ?

Thanks and regards,
Andrew


sparrownightmare posted Sat, 11 April 2009 at 6:39 PM

It shouldn't do that.  It should be a perfect oval.  Have you tried a test render of it in the assembly room to see if it's just the display settings?


MarkBremmer posted Sat, 11 April 2009 at 6:51 PM

 The Spline modeler creates mathematical "fake" geometry; that is, it has dynamic, non-destructive fidelity and manipulation capabilities. (this is like hyper nurbs in other 3D applications or when you apply dynamic smoothing on a vertex object in the Vertex modeling room)

While the preview may show a truncated version, the object when rendered will not. You can control the render-time fidelity by going to Geometry => Surface Fidelity. So, it may look lower resolution than it actually renders. 

Increasing the Spline surface fidelity WILL increase render-time fidelity and controls the amount of polygons if you convert or export the spline object .

Mark






sparrownightmare posted Sat, 11 April 2009 at 6:53 PM

Yup... What he said :).  Thats why I asked if you had tried a test render of the object.