a = atan2(mouseY-height/2, mouseX-width/2)
rect(-30, -5, 60, 10)
Calculates the angle (in radians) from a specified point to the coordinate origin as measured from the positive x-axis. Values are returned as a float in the range from PI to -PI. The atan2() function is most often used for orienting geometry to the position of the cursor. Note: The y-coordinate of the point is the first parameter, and the x-coordinate is the second parameter, due the the structure of calculating the tangent.
|y||float: y-coordinate of the point|
|x||float: x-coordinate of the point|
Updated on Sat Dec 1 21:31:10 2018.