rotate in 90° steps

[jon3de]

I want to copy objects on points and randomize them in rotation (e.g. Y axis)  from 0° to 360° but in 90° steps. I think I need kind of an expression like " (round(rand($PT))*90)" but this gives me only 0° or 90°. I do not quite come up with the right solution for 360°. Would be nice to get some help with that.

kind regards

Jon

rotateIn90degreeSteps.hipnc

[davpe]

(round(rand($PT)*4)*90)

 

??

Edited January 26, 2016 by davpe

[jon3de]

hm...I think rand($PT) gives me 0 or 1 and that *4*90 will give me 0° or 360°  but nothing between ?! 

 

OH sorry davpe!!! you are right! Its works I was to fast sorry. Thank you!

Edited January 26, 2016 by jon3de

[davpe]

hehe sure, it happens to me all the time  

[Charlietbr]

Would there be a simple way of doing this while using a copytopoints node rather than a copystamp? New here, thanks!

[toadstorm]

in a point wrangle:

 

vector axis = set(0,1,0); 

float angle = rint(fit01(rand(@ptnum), 0,4)) * 90;

p@orient = quaternion(radians(angle), axis);

 

this creates an axis/angle rotation and sets it to the p@orient attribute, which copy to points reads natively.

you could also try MOPs Randomize, it has a Step parameter that can lock to specific degrees.