you mean selecting the center point, create a vector normal to the surface in that points, and use that vector as extrusion direction?
what means to operate some points...?
any file we can have a look at? or picture of what you have/want?
This may help with your first question. You need the normal of the points. If you use a CNR (circle-normal-radius) component you can take the normal (N) from your divide surface component and plug it into the normal (N) of the CNR component.
As far as your second question, do you know how you would like to select "some points"? As in, is there some type of criteria, (elevation, proximity to some other geometry, etc...) that would determine which points to select?
Conversely, you could always control the extrusion length, (in the simple example above, it would be the "amplitude" value"), for each extruded shape.
Permalink Reply by emily on November 18, 2010 at 10:11am
thanks for help it should help me out.
Permalink Reply by emily on November 18, 2010 at 10:32am
sorry for these kind of questions, just a beginner. And what if i had a aquare or polygon istead of circle. then what else could i have used instead of N (normal)?
In that case, you could use an "Orient" Component. It is generally used to re-orient geometry from one "direction" to another.
(Xform->Affine->Orient Direction).
G= geometry, (in this example, a hexagon)
pA= reference point, (here it is the same as the surface division points)
dA= reference direction, (can leave default)
pB= Target Point, (in this example, you don't want to "move", just re-align with the surface so the Target point is the same as the reference point)
dB= Target Direction, (which is the Normal of your points).
Hope this helps a bit.
There are generally a few different ways to do things. This is just one example.
Permalink Reply by emily on November 18, 2010 at 11:00am