'random' rotation at specified angles?

[briank53220431]

To elaborate...

I already have a script for randomly rotating objects, but for this particular project I don't want them to rotate randomly from range of degrees; I'm looking for a way to randomly rotate a group of objects at either 90, 180, 270, or 360 degrees only.

I approached an engineer friend about this, and her suggestion was this:

var randNum = random.(0,3); // pick random # in range

var degrees = [90, 180, 270, 360];

var myRandDegree = degrees[randNum];

At this point, I generally understand the general principle of mapping 1-4 to the degrees I want to rotate, but—as I am not a programmer—I'm looking for help in getting the syntax of the script straight. Any help will be greatly appreciated. 

Thanks in advance!

*Also, would there be a way of applying this concept to randomly coloring a group of objects with a specific color palette? That would also be very useful.

[renél80416020]

Bonjour m1b,

Nombre entier aléatoire  multiple de 72 situé entre [ 0 et 360]   (72*5)
L'analyse est juste, sauf que la fonction parseInt(string[, base]) ne te permettra pas d'obtenir 360,

de plus tu as de la chance que Javascript soit un langage très conciliant:
string
Valeur qu'on souhaite analyser et convertir. Si l'argument string n'est pas une chaîne de caractères, elle sera convertie en une chaîne (grâce à l'opération abstraite ToString) . Les blancs contenus au début de l'argument sont ignorés.

for (var j = 0; j < 10; j++) {
var randomAngle =  parseInt(Math.random() *5); // nombre entre 0 et 5
    randomAngle *= 72;  // nombres  multiple de 72 situé entre 0 et 72*5=360
$.write(randomAngle+"\r");  // alert(randomAngle+"\r");
}

Juste pour info

var randomAngle = Math.round(Math.random() *5); // nombre entre 0 et 5

[m1b]

Thank you Rene, I see your point. I don't know why I used parseInt! That was silly of me. 🙂

I don't really want 360 degrees because 360° is the same as 0° rotation.