Jump to content

  • Log In with Google      Sign In   
  • Create Account


opengl shapes drawing and select


Old topic!
Guest, the last post of this topic is over 60 days old and at this point you may not reply in this topic. If you wish to continue this conversation start a new topic.

  • You cannot reply to this topic
No replies to this topic

#1 giugio   Members   -  Reputation: 213

Like
0Likes
Like

Posted 12 October 2012 - 05:42 AM

hello.
I'm implementing a simple project for bidimensional shapes's drawing using opengl.
I already implemented a little engine for manage vbo buffers ,camera and shaders.
The 3d scene is incapsulated in a qtGLWidget of qt 4.8.
Now i would create the drawing of a point, a line ,a polyline and some circles,
1)what are the better rapresentation methods of these entities?a parametrics rapresentation?
2)i would implement a mouse 3d picking and i saw a demo for this, but was used a bounding box system for this(with a bounding sphere), there aren't more accurate system? or is sufficent change the bounding sphere in an axis oriented bounding box?
3)how i can implement a box selector? with the drawing of a rectangle from the start point clicked , to the current mouse position,without Flipping with a shader?
There is a good demo or tutorial
ps.
I use opengl 3.2
thanks.

Sponsor:



Old topic!
Guest, the last post of this topic is over 60 days old and at this point you may not reply in this topic. If you wish to continue this conversation start a new topic.



PARTNERS