Drawing a 3D line segment in OpenGL ES

bigbman · Post by **bigbman** » Sun Jan 09, 2011 12:13 am

Not sure if Irrlicht has any support for this in the iPhone branch, but I could use some pointers please.

For starters, I'd like to draw a single line segment to represent a collision ray.

I'm pretty sure that OpenGL ES doesn't support the draw line function provided with OpenGL...

Thanks!

hybrid · Post by **hybrid** » Sun Jan 09, 2011 12:42 am

Well, try draw3DLine and see if it works under normal OpenGL and then under OpenGL-ES. If not, we might add this later on based on the SW renderer code, using triangles replacing the lines.

bigbman · Post by **bigbman** » Sun Jan 09, 2011 2:25 am

last I tried it didn't work, but I'll give it another whirl.

Is there an example of how to do this with a quad or box (given 2+ 3d points)?

bigbman · Post by **bigbman** » Sun Jan 09, 2011 7:24 pm

Doesn't seem to work

hybrid · Post by **hybrid** » Sun Jan 09, 2011 9:29 pm

Well, I started to work on a full replacement for lines for d3d (due to lack of line thickness feature), so it will be added in the future.

bigbman · Post by **bigbman** » Mon Jan 10, 2011 11:31 pm

I did find this, which might make some people happy: http://irrlicht.sourceforge.net/phpBB2/ ... highlight=