The Voxel Toolbox (a.k.a 'VoxBox') is a Python package for working with voxel data, primarily for making voxel art and video games.
- Export NumPy array as MagicaVoxel file.
Download the code update your $PYTHONPATH environment variable to ensure your Python interpreter can find it. I have no current plans to make this into a proper package with PIP installer, etc.
The following snippet shows how to export a NumPy array as a MagicaVoxel file. See waves.py for the complete code
# Define the size of the volume
col_count = 126 # Width
row_count = 126 # Height
plane_count = 64 # Depth
frame_count = 30
palette = generate_rainbow_colourmap()
# Start with an empty list of volumes
volume_list = []
# Later we will choose a material based on the height (plane) of the voxel
palette_offset_per_plane = (len(palette) - 1.0) / plane_count
# For each voxel in the volume
for frame in range(0, frame_count):
print("Generating frame {} of {}...".format(frame + 1, frame_count))
volume = np.zeros((plane_count, row_count, col_count), dtype=np.uint8)
# Create a simple heightmap (could also load something from disk)
time_step = frame / frame_count
heightmap = generate_waves_heightmap(col_count, row_count, time_step)
for plane in range(0, plane_count):
for row in range(0, row_count):
for col in range(0, col_count):
# Get the height from the heightmap, and
# scale to the height of the volume
height = heightmap[row][col]
height *= plane_count
# If the current voxel is below the
# heightmap then set it to be solid.
if plane <= height:
volume[plane][row][col] = palette_offset_per_plane * plane
# Add the new frame (volume) to the list
volume_list.append(volume)
# Save the volume to disk as a MagicaVoxel file.
print("Saving results...")
filename = "waves.vox"
voxbox.magicavoxel.write(volume_list, filename, palette)
print("Done.")The above code generats the following image:
