# Adding Pitch and Roll to 3D orientation changing using python

**URL:** <https://discourse.slicer.org/t/adding-pitch-and-roll-to-3d-orientation-changing-using-python/32649>\
**Category:** Development\
**Tags:** python\
**Created:** [November 7, 2023, 6:53pm UTC](https://discourse.slicer.org/t/adding-pitch-and-roll-to-3d-orientation-changing-using-python/32649 "2023-11-07T18:53:33Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![floppygator45](https://avatars.discourse-cdn.com/v4/letter/f/779978/32.png) [@floppygator45](https://discourse.slicer.org/u/floppygator45)\
**Post date:** [November 7, 2023, 6:53pm UTC](https://discourse.slicer.org/t/adding-pitch-and-roll-to-3d-orientation-changing-using-python/32649/1 "2023-11-07T18:53:33Z")

</div>

I am currently able to get yaw orientation manipulation working using python for the 3D view. When I try and implement Pitch or Roll the code breaks and gives an error when I try and run it in 3D slicer. The current code I have is:

```auto
import random
import slicer

# Define the number of updates and the interval in seconds
update_count = 5
update_interval = 2 # seconds

# Create a function to update the 3D view
def update_3d_view():
    if update_3d_view.counter < update_count:
        yaw1 = random.uniform(-90, 90)
        threeDWidget = slicer.app.layoutManager().threeDWidget(0)
        threeDView = threeDWidget.threeDView()
        threeDView.resetFocalPoint()
        threeDView.yawDirection = threeDView.YawRight
        threeDView.setPitchRollYawIncrement(yaw1)
        threeDView.yaw()
        print(f"Yaw Rotation: {yaw1} degrees")
        update_3d_view.counter += 1
    else:
        slicer.app.processEvents() # Ensure any pending events are processed

update_3d_view.counter = 0

# Create a timer to trigger the updates
update_timer = qt.QTimer()
update_timer.timeout.connect(update_3d_view)
update_timer.start(update_interval * 1000)

```

My updated code looks like:

```auto
def update_3d_view():
    if update_3d_view.counter < update_count:
        yaw = random.uniform(-90, 90)
        pitch = random.uniform(-45, 45) # Add pitch rotation
        threeDWidget = slicer.app.layoutManager().threeDWidget(0)
        threeDView = threeDWidget.threeDView()
        threeDView.resetFocalPoint()
        threeDView.yawDirection = threeDView.YawRight
        threeDView.setPitchRollYawIncrement(pitch, 0, yaw) # Set pitch, roll, and yaw
        threeDView.yaw()
        print(f"Yaw Rotation: {yaw} degrees, Pitch Rotation: {pitch} degrees")
        update_3d_view.counter += 1
    else:
        slicer.app.processEvents()

```

the error I get when I add pitch to the code is:  
ValueError: Called setPitchRollYawIncrement(double newPitchRollYawIncrement) → void with wrong number of arguments: (-19.14680338362855, 0, 61.92372516991415)

It looks like its not accepting setPitchRollYawIncrement as all three just for yaw.  
Any help or guidance in the right direction would be appreciated

Thanks