Sphere morphing Bug/suggestions

vvvv beta general
1

Hi,
I’m playng around with sphere deformation to obtain objects similar to this or these vvvvonderful pieces of yours.

The first (and most important) problem I have is to increase the resolution of the sphere. I can’t set it above 180 faces, 90 if I calculate normals. I don’t know if this is a hardware limit (Pentium quadcore 4x2.6 Ghz , Nvidia quadro fx550 Ram:2 gigs ddr2) or a bug of sphere geometry. Please don’t tell me that I have to assembly my own vertexbuffer!

The second problem is to obtain a realistic lighting like this.
I suppose that incrementing the number of sphere’s faces is
possible to obtain more shaded and precise forms and also the reflection should improve. Or should I use particular shaders? At the moment I’m using Phong or reflections shaders.

Last question is about transformations. I’d like to apply functions, perlin noise or other operations only to a part of a a sphere. I’ve tried with getspread (spreads) > setslice but I can’t modify more than one slice at time.

I attach a simple patch to show these issues.

Tnx

Deform_sphere_Bug.zip (18.9 kB)

2

The first (and most important) problem I have is to increase the resolution of the sphere. I can’t set it above 180 faces, 90 if I calculate normals.

Connecting a Count (EX9.Geometry Mesh) node to the spheres output shows you that with a resolution of 181x181 you already have 65160 faces! directx seems to have a limit of 65534 faces though.

3

Hi,
In my case, the sphere is created via grid and cartesian nodes…don’t know for Sanch…and also have a look at the smoothing angle pin from the normals node which increase lightning precision…

4

…I have to assembly my own sphere… Seems the only solution if there is this limit. This thing was driving me crazy.

Thank you