Basic visual from a ShapeCollection¶
This example demonstrates how to create a Basic visual from a ShapeCollection in Datoviz.
Compared to the Mesh visual, the Basic visual is much lighter and more efficient, but it does not support lighting, texturing, or wireframes. It only allows a single color per vertex.
Tags: shape, arcball, basic
import numpy as np
import datoviz as dvz
# Load the bunny mesh.
sc = dvz.ShapeCollection()
file_path = dvz.download_data('mesh/bunny.obj')
sc.add_obj(file_path)
# Initialize the scene.
app = dvz.App()
figure = app.figure()
panel = figure.panel(background=True)
arcball = panel.arcball(initial=(0.35, 0, 0))
camera = panel.camera(initial=(0, 0, 3))
# Random colors.
nv = sc.vertex_count()
color = np.random.randint(low=0, high=255, size=(nv, 4), dtype=np.uint8)
color[:, 3] = 255 # Set alpha channel to fully opaque.
# Create a basic visual from the ShapeCollection.
visual = app.basic(shape=sc, color=color, depth_test=True)
panel.add(visual)
app.run()
app.destroy()
sc.destroy()