VPython Reference

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Revision as of 19:50, 5 December 2015 by Canain (talk | contribs) (→‎Sphere)
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Created by Shuyang Chen

VPython reference page for animation functions and constants. This page assumes and only includes basic usage of VPython.

VPython Template

from __future__ import division
from visual import *

## Constants

## Initialization

## Loop
t = 0
deltat = 1e-10
end = 10

while t < end:
    rate(1000)
    ## Loop Code
    
    t += deltat

VPython Animation Functions

Sphere

Source

Example

ball = sphere(pos=(1,2,3), radius=0.4, color=color.blue)

Parameters

Parameter Type Description
pos vector Position of the object
color color Color of the object
radius radius Radius of the sphere
opacity number Opacity of the object
make_trail boolean Whether or not to leave behind a trail

Arrow

Source

Example

arr = arrow(pos=(1,2,3), axis=(4,5,6), color=color.red)

Parameters

Parameter Type Description
pos vector Position of the object
axis vector Direction the arrow is pointing at
color color Color of the object
opacity number Opacity of the object
shaftwidth number Width of the shaft (default: 0.1*(length of arrow))
headwidth number Width of the head (default: 2*shaftwidth)
headlength number Length of the head (default: 3*shaftwidth)
make_trail boolean Whether or not to leave behind a trail

Color

Source

Example

c = color.red

Basic Colors

Name Vector Color
Red (1,0,0) color.red
Yellow (1,1,0) color.yellow
Green (0,1,0) color.green
Orange (1,0.5,0) color.orange
Blue (0,0,1) color.blue
Cyan (0,1,1) color.cyan
Magenta (1,0,1) color.magenta
White (1,1,1) color.white
Black (0,0,0) color.black

Examples

Be sure to show all steps in your solution and include diagrams whenever possible

Simple

Middling

Difficult

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External links

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