Hi all

If you are like me, often using an HDR bitmap on the background, there is a moment when we have to find the right angle. Even though it is as esay as click, move the cursor, enter the valeur, enter and wait till Poser has finished to update, and make a fast test-render, here is a little script I have written to ease that part, and it works also in the "Pose" room:

import poser

def set_background_angle(angle):
  bk_shader = poser.Scene().BackgroundShaderTree()

  for node in bk_shader.Nodes():
    if node.Type() == 'ccl_Mapping':
        node.InputByInternalName('Rotation').SetColor(0.0,angle,0.0)

  bk_shader.UpdatePreview()


val = poser.DialogSimple.AskFloat("Enter the Vertical Rotation (rad)")
if val != None:
    set_background_angle(val)

Just as a reminder, here is the setup I have saved in my runtime library:

The longuest part to write this script: well... to guess that I had to define the rotation values by setting the Mapping node's Rotation "Color"... lol

I'm not using P12 a lot as yet, but I've bookmarked this for future reference, as I like using HDRi backgrounds with SuperFly, though I most often use Snarly's EZDome. it's still good to be able to do it with the background node, especially since Snarly's not finished updating his goodies as yet.

Would it be possible to engage the x- and z- rotations in the script? It might not be practical for everyone but it would be interesting to have additional options.

I think a value of 6 rotates the sphere 1 full rotation

In fact, to be precise: 6.28 = 2x pi, the well-know value: 3.1416, 3.141592, etc.. . The values I remember are 1.57, 3.16, 4.7, nearly a quarter turn each time, and... 2.2 ?.... I don't know why but using this value, I have often stumbled upon a nice-looking situation with hdrihaven's bitmaps... The units are the radians, with the 0 on your right (counter-clockwise), but you may as well enter a negative value: -1.57 corresponds to 4.7.

hborre posted at 1:26AM Mon, 03 May 2021 - #4418236

Would it be possible to engage the x- and z- rotations in the script? It might not be practical for everyone but it would be interesting to have additional options.

Currently, I'm at my job. But when it's finished, I'll make an update ?

Small update: this version displays the current value:

def set_background_angle(angle):
  bk_shader = poser.Scene().BackgroundShaderTree()

  for node in bk_shader.Nodes():
    if node.Type() == 'ccl_Mapping':
          node.InputByInternalName('Rotation').SetColor(0.0, angle, 0.0)

  bk_shader.UpdatePreview()
  
def get_background_angle():
  bk_shader = poser.Scene().BackgroundShaderTree()
  node = [n for n in bk_shader.Nodes() if n.Type() == 'ccl_Mapping']
  if not node:
    return None

  values = node[0].InputByInternalName('Rotation').Value()
  return values[1] if isinstance(values, tuple) else None

    
msg = "Enter the Vertical Rotation (rad)"
curr_val = get_background_angle()
if curr_val:
    msg = "{}nActually: {}".format(msg, curr_val)

val = poser.DialogSimple.AskFloat(msg)
if val != None:
    set_background_angle(val)

Actually, the Poser function asks for a float. To be able to respond to hborre's query, I will search, at the end of may day job, for a function that let us enter a string of characters, instead... ?

Take your time, there is no rush. And thank you enough for your generosity.

I made a script to create a background HDR setup and a Grouping Object to manipulate the intensity, and XYZ-Rotation.

https://www.renderosity.com/rr/mod/forumpro?thread_id=2961233

Don't forget to set set Scale to -1, 1, 1 if you don*t want text mirror-inverted.

hborre posted at 10:54AM Thu, 13 May 2021 - #4418236

Would it be possible to engage the x- and z- rotations in the script? It might not be practical for everyone but it would be interesting to have additional options.

Here you are: an updated version of the script that lets you enter either the vertical rotation or tuple (x,y,z) of values:

def ask_for_a_string(question):
    ''' 
        Let's enter a string. 
        Note that for numerical values, there is a dedicated function
    '''
    dialog = poser.Dialog()
    txt_dlg = poser.DialogTextEntry(dialog, question)
    return None if not txt_dlg.Show() else txt_dlg.Text()

def set_background_angle(x, y, z):
    bk_shader = poser.Scene().BackgroundShaderTree()

    for node in bk_shader.Nodes():
        if node.Type() == 'ccl_Mapping':
            node.InputByInternalName('Rotation').SetColor(x, y, z)

    bk_shader.UpdatePreview()
  
def get_background_angle():
    bk_shader = poser.Scene().BackgroundShaderTree()
    node = [n for n in bk_shader.Nodes() if n.Type() == 'ccl_Mapping']
    if not node:
        return None, None, None

    return node[0].InputByInternalName('Rotation').Value()
    
msg = "Enter either the Vertical Rotation or x,y,z (rad)"
x,y,z = get_background_angle()
if x != None:
    msg = "{}nActually: {:.5f},{:.5f},{:.5f}".format(msg, x,y,z)

val = ask_for_a_string(msg)
if val != None:
    check = val.split(',')
    if len(check) == 3:
        x, y, z = eval(val)
    else:
        y = float(val)
    set_background_angle(x, y, z)

Oh cool. Thank you very much. I look forward to playing around with this.

hborre posted at 5:51PM Thu, 13 May 2021 - #4419113

Oh cool. Thank you very much. I look forward to playing around with this.

It works the Python way: 1 or 1,2,3 or (1,2,3), as you want ?