Is there a simple way to draw a circle in openGL using C++?

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Hi,

I'm hoping if anyone can help me draw a simple 2d circle or hoop in openGL. I can't find any simple tutorials online and I'm just starting out with openGL. If anyone could help me find a good tutorial or lead me in the right direction I would greatly appreciate it!

Posted 5-Feb-14 4:30am

CAS1224

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2 solutions

Solution 2

There are many way you can draw circles in openGL Used points or just used the lines even you can wish to go with your own way.

As circle can be made from indefinite points or line use

GL_POINTS

or

GL_LINES

with changing the coordinate to radial format (polar coordinate) as

x=r*sin(theta)-h

and

y =r*cos(theta)+k

Posted 25-Mar-14 0:21am

Rajeev Kumar Singh

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CPallini · Accepted Answer · 2014-02-05T05:17:00

Solution 1

Here is shown how to draw a 2D circle: 2D Drawing in OpenGL[^]. I know it is Basic4GL, however you could easily convert the circle drawing code to C++ and insert it in one of the many C++/OpenGL skeleton projects available.

Posted 5-Feb-14 5:17am

CPallini

Is there a simple way to draw a circle in openGL using C++?

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Solution 2

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Is there a simple way to draw a circle in openGL using C++?

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