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Animations From First Principles (in 5 minutes)

mathspp.com

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Re: Animations From First Principles (in 5 minutes)

#12

Post by RojerGS »

noelwelsh wrote: post #10

Looks really nice. A few things that I think might make the presentation a bit clearer: 1. Using polar coordinates makes the maths a lot cleaner than using Cartesian coordinates. However you then either need to explain polar coordinates, or you assume people remember polar coordinates from high school which is often not the case in my experience. 2. I think the positioning of the points is a little bit opaque. I was…

I can make it more explicit that the addition is to centre the figures in the canvas.

Re: Animations From First Principles (in 5 minutes)

#13

Post by atoav »

bmer wrote: post #5

I do not understand how this is from "first principles"?

I think it is from first principles, cause what more would one want, have them write an OS first? Or should they mine for rare earths to build their own CPU? You have to start somewhere reasonable and rhis is somewhere reasonable, afaik.

This is about how to do animations with primitive shapes, that knowledge would probably translate to many other environments. You could even follow the tutorial with pen and paper if you are into that.

Re: Animations From First Principles (in 5 minutes)

#15

Post by danbruc »

Drawing a circle by drawing circles - tiny ones, they will just look like single pixels - might be confusing to some, including me. I would suggest connecting adjacent points with lines, that is conceptually not really harder than just drawing the points and it will always give you a complete curve even if a step jumps across a couple of pixels.
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