Why rad += (k/180)*Math.PI on the snow tut?
"
onClipEvent (load) {
//variables
width = 300;
height = 200;
//random x,y, and alpha
this._xscale = this._yscale=50+Math.random()100;
this._alpha = 20+Math.random()50;
//random x and y for flakes
this._x = -width+Math.random()(3width);
this._y = -10+Math.random()*height;
//speed and trigonometric value
i = 1+Math.random()*2;
k = -Math.PI+Math.random()*Math.PI;
rad = 0;
}
onClipEvent (enterFrame) {
// horizontal movement
rad += (k/180)*Math.PI;
"
It took me forever to realize that k is PI^2 without the math.random(), but now I do not understand why k/180*Math.PI again!
Why 180?
PI^2/180 then why * PI again?
Could someone tell me what each part’s roles are?