1. ES305 Virtual Tools in Engineering Design Cameras & Paths in Virtools 11-18-2009 Prof. Searleman jets@clarkson.edu

2. Overview ■ Virtools ■ Third-person Cam ■ Curves (Path) Homework: ■ Virtools Exercise 5, due Monday, 11/23 ■ Quiz on VR: Monday 11/23/09 ■ VR component of the course project – due 12/02 ■ Brief 5 minute presentation – 12/02

3. VR Component of ES305 ■ 50% Homework: Exercises ■ 25% Quiz – Monday, 11/23/09 ■ Brief closed book part on Virtual Environments & Virtual Product Development ■ Open book – Basics of Virtools ■ 25% Virtual Environment for your product

4. Virtual Environment for Water Bottle 1.Virtual World – effective setup of product, environment, lighting, cameras, etc. 2.Immersion – how does your virtual environment foster a sense of immersion? 3.Sensory Feedback – how does a potential customer experience the project? Is there effective use of visual images, sound, … 4.Interaction – how does a potential customer interact with the product? What are the input devices? How does the virtual environment tie in with the needs & requirements you identified for customers?

5. Data Resources ■ Creating a data resource: ■ Resources | Create New Data Resource ■ Navigate to your course directory ■ Type in a name: e.g. VRresource & click save ■ Copy your models, textures, sounds, etc. into the new data resource

6. Recap: Types of cameras ■ Surveillance cams ■ First-Person cams ■ Third-Person cams ■... can you think of others? We will take a brief look at Third-Person cams in virtools ■ FollowCam ■ add a script using the Follow BB and LookAtBB

7. Interactive Paths ■ Paths can “tell a story” ■ Curves in Virtools ■ Example: teapot on a curve □time vs. frame dependencies: right click on “play” icon □Curve Follow BB □Position on Curve BB

8. Curves A Curve is a 3D Entity which is a collection of segments attached by Curve Points to make a single curved line. Curves can: ■ be open or closed ■ have segments are lines (linear) or curved (spline) ■ be visible in player mode or not ■ have a referential parallel to the grid plane (Guide) or to the view plane (View plane) ■ note: there is an excellent tutorial on curves in C:\Program Files\3DVIA\Virtools 5.0\Documentation\Tutorials \TutorialAvis\Curves.avi (plays in Windows Media Player)

9. Curve Follow BB Note that this is a Loop In/Loop Out BB. pIns include Curve & Duration pOuts are Progression & Value

10. Position on Curve BB