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arc help

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Started by asdfwe January 30, 2008 01:55 PM

2 comments, last by Zakwayda 16 years, 2 months ago

asdfwe

100

Author

January 30, 2008 01:55 PM

given two points (x1,y1) and (x2,y2) , how to draw a arc between them in opengl

CodeMunkie

805

January 30, 2008 01:58 PM

Depends on what you want it to look like. There are an infinite number of arcs between two points. You would really need a third point for your question to make sense.

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asdfwe

100

Author

January 30, 2008 02:03 PM

any arc will do
i just wanna connect the two points with an arc
let center be ((x1+x2)/2 , (y1+y2)/2 )

Zakwayda

2,389

January 30, 2008 03:11 PM

Quote:Original post by asdfwe
any arc will do
i just wanna connect the two points with an arc
let center be ((x1+x2)/2 , (y1+y2)/2 )

It looks like you have the center figured out, and the radius is just |p1-p2|/2.

How to draw a circle in OpenGL (and other APIs) has been covered quite a few times on these forums, so I'd try searching the archives for 'OpenGL circle', or something of that sort. Then, just draw half of it :)