The image produced by the WaveGradient.pde and WaveGradient.js examples produces different output

[soegaard]

Issue description

Compare the example distributed with Processing 3 with the output of WaveGradient.js.
Notice that the left side is different.

https://github.com/processing/processing-docs/blob/master/content/examples_p5/Basics/Color/WaveGradient/WaveGradient.js

URL(s) of affected page(s)

Proposed fix

[soegaard]

Reimplementing the WaveGradient in Sketching shows WaveGradient.pde produces the correct output.
So either there is a bug in WaveGradient.js or in P5.js.