Random Position on Surface?
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THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 29/07/2008 at 06:51, xxxxxxxx wrote:
User Information:
Cinema 4D Version: 10.1
Platform: Windows ; Mac OSX ;
Language(s) : C++ ;---------
Hi,is there a good (and fast) way to get a random position on a polygon object's surface, and maybe even the surface normal at that position?
I didn't find anything in the SDK, maybe I just don't know what to search for.
Thanks in advance for any tipps and hints!
Greetings,
Jack -
THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 29/07/2008 at 07:12, xxxxxxxx wrote:
The TP node "PSurfacePosition" does exactly what I want, but I need to implement it in C++. Is there any class I could have a look at which may help me with that?
Thanks again,
Jack -
THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 29/07/2008 at 11:56, xxxxxxxx wrote:
OK, I already got my answer. And a pretty good one, indeed
Thanks anyway.
Jack
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THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 29/07/2008 at 13:00, xxxxxxxx wrote:
Nice to hear you found a solution. Would you mind sharing what you found out?
cheers,
Matthias -
THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 30/07/2008 at 12:33, xxxxxxxx wrote:
Get a random polygon from the object, weight it according to its area (to prevent resulting random positions crowding on smaller polygons).
The use random baricentric coordinates to get a position on the triangulated polygon.
At first I wanted to do it with a GeRayCollider shootin' random rays at the geometry, but this way is much faster and less work to implement
URL=http://en.wikipedia.org/wiki/Barycentric_coordinates\_(mathematics)]Wiki Link[/URL]
Cheers,
Jack[