Which of the following things should you do before starting the development of your XR application? Choose all that apply.

• Create physical prototypes to explore interactions without technical constraints

• Create storyboards and wireframes to flesh out design ideas

• Construct personas to make it clear who you're designing for and who you're not designing for

• Create digital prototypes to test interactions for implementation feasibility

Which of the following statements are correct about WebXR, Unity, and Unreal? Choose all that apply.

• WebXR is an emerging web standard designed to bring XR content to the web.

• Unity has native support for XR and is the de facto standard for creating XR apps.

• Unreal provides increasing support for XR but was not originally designed to be an XR tool.

• WebXR is a JavaScript library that can be used in A-Frame to display XR content.

• Unreal is a Unity plugin that can be used to create XR experiences.

Which of the following statements best describe A-Frame? Choose all that apply.

• A-Frame is based on web standards and supports WebXR

• A-Frame is a toolkit for creating VR and AR applications

• A-Frame provides the richest XR experience of all the XR platforms presented in this course

Which of the following statements are true about Unity? Choose all that apply.

• Unity provides a rich ecosystem for developing XR applications

• Unity is the de-facto standard for creating cross-platform XR applications

• Unity is often considered better than Unreal when it comes to high-quality visuals

Which of the following 3D transforms would spin a cube around its vertical axis?

• rotation = (360,0,0)

• rotation = (0,360,0)

• rotation = (0,0,360)

Which of the following statements best describes what raycasting is?

• In 3D, raycasting is a technique to determine which object is selected.

• In 3D, raycasting is a technique to travel from one location to another.

• In 3D, raycasting is a technique to copy one 3D position vector to another.

Which of the following best describes a 3D mesh?

• The geometry or skin of a 3D model that describes its structural build.

• The skeleton or rig of a 3D model that specifies its movement for animations.

• The material or texture of a 3D model that determines its visual appearance.

What is required for creating immersive VR applications?

• Environmental understanding including light estimation and object recognition

• Environmental design including lights, physics, and spatial sound

Choose three (3) reasons why designing a VR application is potentially more difficult than designing traditional web or mobile applications.

• There are major differences between VR devices.

• There are many more degrees of freedom for user interaction.

• There are lots of standard user interface widgets to choose from.

• There is a need for multi-sensory interaction to make it immersive.

What are the main differences between 3D and 360? Choose all that apply.

• Unlike 360 content, 3D objects react to light and physics.

• Unlike 360 content, 3D scenes are immersive.

• Unlike 360 content, 3D objects have width, height & depth.