Most of the heavy lifting on this was already done because had projectOn and angleBetween for vectors of size Rn, took this moment to do some Vector library reorganizing.

• Have now renamed angle to angle2D is now the name of the function that uses atan. Other functions that specifically work only in 2D space have that in the function name.
• Note: angleToAxis(0) and angleBetween don't preserve directionality b/c acos.
  • Solution: directionalAngleToAxis(angleAxis, directionAxis) can now be used in Rn space.

Video Info

• coding train link: https://thecodingtrain.com/tracks/the-nature-of-code-2/noc/5-autonomous-agents/6-scalar-projection
• video in playlist: https://www.youtube.com/watch?v=DHPfoqiE4yQ&list=PLRqwX-V7Uu6ZV4yEcW3uDwOgGXKUUsPOM&index=43
• code: 2D Vector Projection https://editor.p5js.org/codingtrain/sketches/c4jmHLFQI

Other Resources

• https://radzion.com/blog/linear-algebra/vectors
• https://www.khanacademy.org/math/linear-algebra/matrix-transformations/lin-trans-examples/v/introduction-to-projections

Instructions

Reload the page to get a new base vector to receive the projections.

• "l" to start or stop the the running sketch