ar for web using javascript coursera week 3 answers

How to work with scenes and assets quiz

1. Which section of the script do you edit to integrate and render your HTML and CSS assets in PlayCanvas? Select the best answer.

  • Initialize.
  • Update.

2. What are the three entities every PlayCanvas AR starter kit project should have? Select all that apply.

  • Script
  • Pattern marker
  • Light
  • AR camera

3. The Audiolistener component determines how a sound is heard. How many Audiolisteners can be active at one time? Select the best answer.

  • One (1)
  • Two (2)
  • Three (3)
  • As many as you want

4. Which scene setting enables you to compress high dynamic range (HDR) colors to those colors that are visible on monitors (low dynamic range colors [LDR])? Select the best answer.

  • Cubemapping
  • Tonemapping
  • Batching
  • UI coloring

5. What are the effects of letting all of your assets preload? Select the best answer.

  • Everything will load smoothly when you launch your application.
  • Memory and performance will be compromised.

How to work with animations and user input quiz

6. Which components make any Entity in a scene participate in physics simulations? Select all that apply.

  • Rigidbody
  • Collision
  • Gravity
  • Animation

7. ammo.js is a powerful physics engine used by PlayCanvas that needs to be imported before you can apply any physics to your 3D models.

  • True
  • False

8. Select the best answer to fill in the blank: Use the setting to control how the object moves on the X, Y and Z axes.

  • Linear factor
  • Damping
  • Angular factor

Shuffle Q/A 1

9. When implementing 3D animation in PlayCanvas, each character will have a single animation that includes all of the actions the character might perform. Select the best answer.

  • True
  • False

Content development and integration quiz

10. The PlayCanvas AR starter kit contains which of the following items you can use to create projects? Select all that apply.

  • JavaScript code for the three primary 3D interactions
  • A sample game design document
  • A basic 3D object
  • An initial scene with a camera and light

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