PlantGL Tutorial - Objects and 3D-Visualization

PlantGL is an open-source graphic toolkit for the creation, simulation and analysis of 3D virtual plants.

In this tutorial, we will :

• create a Sphere object from PlantGL

• display some PlantGL objects in 3D

Introduction

We need some packages to make this tutorial work.

import k3d
from openalea.plantgl.all import *
from openalea.widgets.plantgl import PlantGL

Sphere Construction and Display

Let’s build a Sphere object from PlantGL.

s=Sphere(radius=2)

Now, we display it with the openalea.widgets.PlantGL function.

PlantGL(s)

More Objects and more Displays

Let’s have a scene object in which we add a Sphere and a Box objects.

scene = Scene()
scene.add(Sphere())
b = Box()
tbox = Translated((1,0,0), b)
scene.add(tbox)

Now we visualize the scene.

PlantGL(scene)

Have fun !

Let’s import cool stuff !

from __future__ import print_function
from ipywidgets import interact, interactive, fixed, interact_manual
import ipywidgets as widgets
from random import randint

Let’s define some functions.

def color():
    return Material(ambient=Color3(randint(0,255), randint(0,255), randint(0,255)))

def buildSphere(n, rows=2):
    """Build n Spheres at different positions"""
    s = Sphere()
    scene = Scene()
    for i in range(n):
        si = Translated((2*(i%rows),2*(i//rows),0), s)
        scene.add(Shape(si, color()))
    return PlantGL(scene, group_by_color=True)

interact(buildSphere, n=widgets.IntSlider(min=1, max=100, step=1, value=10))

<function __main__.buildSphere(n, rows=2)>