Reference Catmull-Rom in the docs for curvePoint

[davepagurek]

This is a small documentation change to make it clearer what curvePoint is calculating. Right now, bezierPoint's documented return value is a Bezier value, but the docs for curvePoint also call its return value a Bezier value. Hopefully this will be clearer if the curvePoint docs mention the type of spline it is calculating a point alone.

Changes:

• Mentions that the return value of curvePoint is a value on a Catmull-Rom spline (which is what curve draws) as opposed to a Bezier value (which is what bezierPoint draws)

PR Checklist

• [Inline documentation] is included / updated

[lmccart]

@davepagurek I wonder if many p5.js users will know what a Catmull-Rom is. Could we simply say "curve value" and presumably it's the value along the curve specified? If it's important to mention it's using Catmull-Rom to calculate, maybe that could be added as a line in the description.

[davepagurek]

I agree that it's probably not something most people will recognize or need to know. I'm guessing what'll be important to people is that it does a similar calculation to curveVertex, so saying "curve" (and maybe even linking it to the curveVertex docs?) would get the job done. The curveVertex page also mentions Catmull-Rom splines already, so it's there for people to look into if they're interested.

[lmccart]

@davepagurek that sounds like a good plan