tailieunhanh - Lecture Computer graphics: Lecture 30 - Fasih ur Rehman

After you read chapter 8 you should be able to: Discuss the purpose of the components required for successful communications; describe these uses of computer communications: wireless messaging services, wireless Internet access points, cybercafés, global positioning systems, collaboration, groupware, voice mail, and Web services; differentiate among types of networks: LANs, MANs, and WANs;. | Computer Graphics Lecture 30 Fasih ur Rehman Last Class Information presentation direct or transformed Model view approach Static or dynamic Today’s Agenda Graphical User Interfaces Animation Display Factors (Information) User requirement Precise information Data relationships Information values change frequency Should user know immediately about the change? Response on change required or not from user Direct or transformed? Textual or numeric? Multiple information presentation Analog and Digital Presentation Digital presentation is compact so takes less screen space and can present precise value Analog presentation give good information by just getting an overview and present information of outliers etc. Dynamic Display Time Temperature Pressure Displaying Relative Values Progress bar etc. Data Visualization Used to display large amount of information Reveals trends Examples Weather information from a number of sources Traffic information at toll plazas Use of Colors Extra dimension | Computer Graphics Lecture 30 Fasih ur Rehman Last Class Information presentation direct or transformed Model view approach Static or dynamic Today’s Agenda Graphical User Interfaces Animation Display Factors (Information) User requirement Precise information Data relationships Information values change frequency Should user know immediately about the change? Response on change required or not from user Direct or transformed? Textual or numeric? Multiple information presentation Analog and Digital Presentation Digital presentation is compact so takes less screen space and can present precise value Analog presentation give good information by just getting an overview and present information of outliers etc. Dynamic Display Time Temperature Pressure Displaying Relative Values Progress bar etc. Data Visualization Used to display large amount of information Reveals trends Examples Weather information from a number of sources Traffic information at toll plazas Use of Colors Extra dimension can be added Can be used for warning Guideline Too many colors should not be used Color code should also be provided and the user may be provided flexibility to change color code. Designing must be done for monochrome and colors should be added afterwards Color codes should be consistent Keep lower resolutions in mind User Facilitation The user guidance system (like on – line help, error messages and manuals) should be integrated with the user interface Animation Walt Disney created Animated objects Mickey Mouse Donald Duck Animate mean bring to life Animation How we perceive motion Persistence of vision (1/25 seconds) Kinematics Study of movement and motion of the structure that have joints (without consideration of cause of motion) Human Robots / Robotic manipulators Animation Types Cel Animation: based on changes that occur from one frame to another. Path Animation Created using Key frames by tweening Frame Rate 24 FPS (US film standard) 25 30 3D Animation Modeling Animation .