drawin 2D circle

2011 8 17
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hi all i want to make a circle in which i can change the the sound source in 360 plane.the sound source can be changed either by mouse cursor or by sliding some slider. any help in this regard will b highly appreciated.

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Jan
Jan 2011-8-17
What have you done so far and wich problems have occurred?
muhammad tariq
muhammad tariq 2011-8-18
actually i have made a rectangular shaped fig. and am using sliders for uicontrol.i drag the sliders and move the sound source (like '*' or 'o' representing source)on the rectangular figure to the required angle on 2D plane.now i want to do the same thing on a circle that is to move the sound source on the circumference around the complete circle ...
the circle should show angles as -90 deg at left and 90 deg at right of circle and 0 deg front with some intermediate angles shown (like -70 -50 -40 in 2 quadrant and 40 50 70 in 1st quadrant).the same angles should be repeated in lower semicircle also.help me out in making such uicontrol.
thanks in advance

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Image Analyst
Image Analyst 2011-8-17

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muhammad tariq
muhammad tariq 2011-8-18
to make a simple circle is not a matter infact what i have to do is.
actually i have made a rectangular shaped fig. and am using sliders for uicontrol.i drag the sliders and move the sound source (like '*' or 'o' representing source)on the rectangular figure to the required angle on 2D plane.now i want to do the same thing on a circle that is to move the sound source on the circumference around the complete circle ...
the circle should show angles as -90 deg at left and 90 deg at right of circle and 0 deg front with some intermediate angles shown (like -70 -50 -40 in 2 quadrant and 40 50 70 in 1st quadrant).the same angles should be repeated in lower semicircle also.help me out in making such uicontrol.
thanks in advance

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