Fix examples with broken

[davepagurek]

Fixes https://github.com/processing/p5.js-website/issues/1505

Changes:

• For orbit control, removes the translate() call, and uses a camera to place the view at the origin
• For raycasting, updates the distance from the camera to 800, the new default

Screenshots of the change:

• Live version of the updated orbit control example: https://editor.p5js.org/davepagurek/sketches/naHUikQFf
• Live version of the updated raycasting example: https://editor.p5js.org/davepagurek/sketches/N1Z4JnGQp

[limzykenneth]

Thanks @davepagurek. Do tag me for review if there are somewhat critical fixes like this. I'll work with Q to get a new p5.js release at some point so if there are reference examples that need to be updated they can be done soon. Although at the same time do also let me know if you need me to work on and help with any of the STF stuff you have as it seems you have a lot on your plate already.