Source

I’m looking for chart tool kit (library) and I have some questions to ask before making my choice.

Q1 : Do I have access to the source of OpenGL ? If a function I need is not programmed, can I include it ?

Q2 : I need to be able to select a point or a curve in the chart and to move it or delete it, is it possible with Open GL ?

Thanks a lot for the information

Karen