Sprites or Flat 2D Objects

Sprites are flat 2D primitive objects that you can use like any other primitive PTVR object (e.g. a sphere).

"In computer graphics, a sprite is a two-dimensional bitmap that is integrated into a larger scene, most often in a 2D video game" (wikipedia link).

Figure 1: Several PTVR Sprites have been created from the same image file and have been placed on several cubes sides.

Example of code to create a Sprite object:

my_sprite = PTVR.Stimuli.Objects.Sprite (
    path_to_image_file = "", 
    image_file = "yellow_square_100pix.png", 
    position_in_current_CS = np.array ( [ -1, -0.5, 2 ] ),
    rotation_in_current_CS = np.array ([90, 0, 0]) )

Where should the image file be stored on your PC ?
if 'path_to_image_file' is set to "" (default), then the 'image_file' parameter corresponds to a file stored on your PC in :
...\PTVR_Researchers\PTVR_Operators\resources\Images
or in one of its sub-directories.

if 'path_to_image_file' is set to say "C:", then the 'image_file' parameter corresponds to a file stored on your PC in "C:".

Demos

Main demos to create and use Sprites are in: ...\PTVR_Researchers\Python_Scripts\DEMOS\Objects\

The numbers 10, 20, 30 ...(just after 'Sprite_') are meant to order the scripts when you look at them say in the Windows Explorer. This order is to offer a didactic progression when you discover a PTVR feature (here the Sprites).

Python file	Description
Sprite_10_2D_object_from_png_file.py	Simple creation of a sprite
Sprite_20_letters_from_png_file.py	Create 2D letters and rotate them.
Sprite_30_cats_on_cubes.py	Create 2D cats images and place them on cubes' sides.