# animated line drawing

Is it possible to draw a line in sagemath as like javascript?

A Demo: http://jsfiddle.net/m1erickson/7faRQ/

animated line drawing

Is it possible to draw a line in sagemath as like javascript?

A Demo: http://jsfiddle.net/m1erickson/7faRQ/

add a comment

0

For sure, see the animated plots documentation.

EDIT: here is a possible solution:

```
def drawlines(lines, ns, **options):
r"""
Input:
- ``lines``: a list of lines, each line being defined
by its endpoints as ``[(x1,y1), (x2,y2)]``
- ``ns``: the number of division of each line for the
animation
- ``**options``: any option to pass to the graphic
command ``line``, like ``color`` or ``thickness``
"""
resu = []
preceeding = Graphics()
for li in lines:
x1, y1 = li[0]
x2, y2 = li[1]
dx = float(x2 - x1)/float(ns)
dy = float(y2 - y1)/float(ns)
for i in range(ns):
xx = x1 + (i+1)*dx
yy = y1 + (i+1)*dy
resu.append(preceeding + line([(x1,y1), (xx,yy)], **options))
preceeding = resu[-1]
return resu
anim = animate(drawlines([[(1,2), (3,4)],
[(3,4), (3,0)],
[(3,0), (1,2)]], 10, color='red', thickness=2),
xmin=0, xmax=4, ymin=0, ymax=5)
anim.show(delay=5)
```

You can see it at work on SageMathCell.

Asked: **
2017-11-23 18:29:45 -0600
**

Seen: **165 times**

Last updated: **Nov 25 '17**

fitting a curve to a straight line

Given a direction vector and a point, how to draw a 3d line?

Elegant solution to 'thin out' array and plot line

Basic vector functions in Sage

ATAN2 AssertionError while plotting complex squareroot function

Solid lines in plot and grid lines

Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.