CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 CS5500 Computer Graphics February 26, 2007.

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Presentation transcript:

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 CS5500 Computer Graphics February 26, 2007

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 Announcement Reading Assignment: –Introduction chapter of any reference book listed in the syllabus.

CS5500 Computer Graphics © Chun-Fa Chang, Spring D Graphics Programming Application Programming Level (Learning to Drive): 1.Describe the objects in 3D coordinates. 2.Set up the camera. 3.Call OpenGL (or any other 3D API). Implementation of a Renderer (Under the Hood): 1.Transform 3D coordinates to 2D. 2.Apply lighting. 3.Draw the dots (pixels).

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 Hands-On Approach We will look at both levels in parallel. –In some assignments, you will program in the application level. In the graphics pipeline assignments, we will create a 3D renderer. A lot of coding, but most of the design is already done for you. It should be fun!

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 What is Computer Graphics? More specifically, what is 3D graphics? We call this 2D graphics:

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 What is 3D? Is this 3D graphics?

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 Computer Graphics: Wireframe graphics Project Sketchpad Display Processors Storage tube

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 Raster Graphics Allow us to go from lines and wireframes to filled polygons

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 Computer Graphics: Realism comes to computer graphics smooth shadingenvironmental mapping bump mapping

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 Computer Graphics: Special purpose hardware –Silicon Graphics geometry engine VLSI implementation of graphics pipeline Industry-based standards –PHIGS; GKS…etc. (vs. OpenGL today) –RenderMan Networked graphics: X Window System Human-Computer Interface (HCI)

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 Computer Graphics: OpenGL API Completely computer-generated feature-length movies (Toy Story) are successful New hardware capabilities –Texture mapping –Blending –Accumulation, stencil buffer

CS5500 Computer Graphics © Chun-Fa Chang, Spring 2007 Computer Graphics: Photorealism Graphics cards for PCs dominate market –Nvidia, ATI, 3DLabs Game boxes and game players determine direction of market Computer graphics routine in movie industry: Maya, Lightwave