math - C# Convert mouse position to radians -

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i have "small" problem code convert mouse position radiance.

i need mouse position determine head of robot must point to. code works , head turns ... but! reaches max of pitch quickly.

as not super sharp in radiance calculation or c#, have resort expert help. :)

my code:

maxcursory = screen.primaryscreen.bounds.height;  cursory = cursor.position.y;  pitch = (float) (((3 / maxcursory * cursory) - 1.5) * 1);

the min , max values need: -0.6720 0.5149

edit: fixed code display error. ;)

edit 2: added min , max values

so want pick value within min , max based on ratio of cursor y position max screen height?

the current calculation pitch gives range -1.5 1.5.

for range between -.6720 , .5149 use:

1.1869 * cursory / maxcursory -.672

or, generalized:

(rangeend-rangestart)*(cursory / maxcursory) + rangestart

edit: assumed knew in case, cursor.position.y treats top of screen 0 , bottom same height. if wanted top of screen have value of .5149 , bottom -.672 range start , end .5149 , -.672 respectively.

-1.1869 * cursory / maxcursory + .5149

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