Display "Hello World"

If you have followed the previous "Getting Started" subsections,
and this includes having carefully read the IMPORTANT warning in the Install Python subsection about setting the Python Environment Variable PYTHONPATH,
then you should be able to display "Hello World" in your VR headset with the following script 10_hello_world.py :

"""
...\Demos\Text\hello_world.py
"""

import PTVR.SystemUtils
import numpy as np
import PTVR.Visual
import PTVR.Stimuli.Scenes
import PTVR.Stimuli.Objects

def main():
    my_world = PTVR.Visual.The3DWorld()

    my_scene  = PTVR.Stimuli.Scenes.VisualScene ()
    text = PTVR.Stimuli.Objects.Text (  text = 'Hello World !', 
                                        position_in_current_CS = np.array ( [ 0, 1, 1 ] ),
                                        fontsize_in_postscript_points = 60
                                    )
my_scene.place (text, my_world)
my_world.add_scene (my_scene)

my_world .write () # writes to .json file
print (".json file has been created.")

if __name__ == "__main__":
    main()
    PTVR.SystemUtils.LaunchThe3DWorld("Jane Doe")

😉 Remark: For more detailed explanations on the script 10_hello_world.py, have a look at this section.

Demos Path of demos: ...\PTVR_Researchers\Python_Scripts\Demos\Text\

Python file	Description
10_hello_world.py	this demo contains the code displayed above.