How to make button to find the min/max value and set it back to parameter?

[zjie]

Hi, I want to customize buttons which will allow me to find the min/max speed attribute and set it back to the parameters. I am new to Houdini and python, will appreciate some helps, thanks.

 

Edited October 24, 2018 by zjie

[ftaswin]

node = hou.node('/obj/geo1/speed1')
geo = node.geometry()
pts = geo.points()

buffer = []
for i in pts :
    v = i.attribValue("v")
    speed = hou.hscriptExpression("length({0},{1},{2})".format(v[0],v[1],v[2]))
    buffer.append(speed)
    
buffer = sorted(buffer)
minspeed = buffer[0]
maxspeed = buffer[-1]

hou.parm("/node/with/min/parm").set(minspeed)
hou.parm("/node/with/max/parm").set(maxspeed)

 

[zjie]

14 hours ago, cloud68 said:

node = hou.node('/obj/geo1/speed1')
geo = node.geometry()
pts = geo.points()

buffer = []
for i in pts :
    v = i.attribValue("v")
    speed = hou.hscriptExpression("length({0},{1},{2})".format(v[0],v[1],v[2]))
    buffer.append(speed)
    
buffer = sorted(buffer)
minspeed = buffer[0]
maxspeed = buffer[-1]

hou.parm("/node/with/min/parm").set(minspeed)
hou.parm("/node/with/max/parm").set(maxspeed)

 

Hi cloud68, thanks for the help, may I know where should I input these script on? is it on the callback script on the buttons creation and changed from Hscript to python?

[ftaswin]

You can put them in the button callback, change the language to python. The parameters need to exist otherwise it'll throw an error

 

Edit: Callback does not take "\n". Anyway......

ft_getminmaxvelocity.7z

Edited October 30, 2018 by cloud68
upload file