gen extrusion problem

    Oct 15 2012 | 8:19 am
    I'm trying to extrude a matrix from a gridshape with gen. The extrusion is working so far but the result are not as excepted. The image should influence the z axis of the grid shape, but in my example this is not working correctly.. I cant recognize the image anymore. mapping issue?
    Thanks for any help..

    • Oct 15 2012 | 8:39 am
      hm, i might be completely off topic, but do you know about @matrixoutput 1 (and 2) attributes for objects, which allow for export apparently ?
    • Oct 16 2012 | 4:23 pm
      yes, I know that. If you look at the patch you will see that I'm using a gridshape with matrixoutput 1. I'm trying to extrude only a small part of the gridshape. Nobody?
    • Oct 16 2012 | 6:26 pm
      hi there! i think that "you can't recognize the image" cause you map it onto a sphere. if you use a plane instead it pretty much works fine. also you don't need lighting and shading options in your source gridshape because you're using it with @matrixoutput 1 and you don't need [swiz z] after [in2] inside gen because you only got one plane there. look at this:
    • Oct 16 2012 | 6:40 pm
      thanks a lot for the help, but I want to use a sphere not a plane. I want to reduce the video size and extrude on a sphere. Is that possible?
    • Oct 16 2012 | 8:57 pm
      When you extrude a shape, you're pulling the vertices along their surface normal. For a plane, this is the positive Z direction. For a sphere, it's the same direction as the vertex position (i.e. for a unit sphere, the position and the normal are exactly the same). For other shapes, like a cube, the extrusion direction would change depending on which face of the cube a particular vertex was on.
      Here's a patch that extrudes a sphere and texture maps it with the video image.
    • Oct 16 2012 | 9:14 pm
      wesley, you are gorgeous! thanks so much for that!!