curve: Issues with curve generation for large number of points sampled.

[Vesperlee]

Expected Behavior

The curve produced is expected to be made of a solid line.

Current Behavior

The curve produced has gaps / is dotted.

Steps to Reproduce

1. Nvidia Optimus and graphics acceleration (from browser settings) enabled.
2. draw_connected_full_view(10000)(unit_line)
3. The unit_line produced will not be a straight line. (Dotted line)

Context

This bug happens when Nvidia Optimus and graphics acceleration in the browser is enabled.
Can be fixed system-wide by disabling Nvidia Optimus, or can fixed for a specific browser by disabling graphics acceleration in the browser settings.

Issue occurs on Microsoft Edge, Google Chrome, and Vivaldi, and the above fix works for all three.

Failure Logs

https://share.sourceacademy.nus.edu.sg/8j7om

Images of issue attached.