Surfaces

Dec 28, 2012

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Surfaces

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Curved Surfaces

Curved Surfaces. CSE167: Computer Graphics Instructor: Steve Rotenberg UCSD, Fall 2006. Curve Evaluation. p 1. Find the point x on the curve as a function of parameter t :. •. x ( t ). p 0. p 2. p 3. de Casteljau Algorithm. p 1. We start with our original set of points

1.47k views • 40 slides

Exchange surfaces

Module F211 1.2.1 Exchange surfaces and breathing. Exchange surfaces. Lesson objectives: To describe the features of an efficient exchange surface Describe the diffusion of oxygen and carbon dioxide across an alveolus. The need for an exchange system in multicellular organisms.

552 views • 28 slides

Extended Surfaces

Nature and Rationale. Nature and Rationale of Extended Surfaces. An extended surface (also know as a combined conduction-convection system or a fin) is a solid within which heat transfer by conduction is assumed to be one dimensional, while heat is also transferred by convection (and/or

753 views • 33 slides

Surfaces

Surfaces. Lecture 17. Determining Diffusion Coefficients. In practice, one would do experiments at a series of temperatures with a tracer, determine the profile, solve Fick’s second law at each T for D . Plotting ln D vs 1/T yields D o and E B .

1.13k views • 23 slides

Extended Surfaces

Extended Surfaces. Chapter Three Section 3.6. Nature and Rationale. Nature and Rationale of Extended Surfaces. An extended surface (also know as a combined conduction-convection system or a fin ) is a solid within which heat transfer by conduction is assumed to be

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Surfaces

Surfaces. Lecture 18. Diffusion Rates. Probability of atom making a jump to vacancy is where ℵ is number of attempts and E B is the activation or barrier energy. Combining, total diffusion rate will be product of probability. of a vacancy times probability of a jump:

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Surfaces

Surfaces. Reporter: Gang Xu May 30, 2006. Surfaces Session. Aug 1, 2006, 8:30-10:15 am Session Chair: Leif.P Kobbelt. Papers. Real-Time GPU Rendering of Piecewise Algebraic Surfaces Charles Loop , Jim Blinn ( Microsoft Research ) Point-Sampled Cell Complexes

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Walking Surfaces

Walking Surfaces. Paving the Way to Success. Where the Sidewalk Ends…. Thousands of employees, guests and tenants are injured each year by a trip & fall The most frequency cited cause is a defect in the walking surface

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Surfaces

Surfaces. Chiew-Lan Tai. Reading. Required Hills Section 11.11 Hearn & Baker, sections 8.11, 8.13 Recommended Sections 2.1.4, 3.4-3.5, 3D Computer Graphics, Watt. Mathematical surface representations. Explicit z = f(x,y) (a.k.a. “height field”)

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Surfaces – Gas adsorption at solid surfaces

Surfaces – Gas adsorption at solid surfaces. 1/28/13. Why Surfaces?. Heterogeneous catalysts are solids Solid surfaces can immobilize catalyst particles Reactions occur at interfaces Liquid/solid Gas/solid Atoms in the surface are under-coordinated compared to bulk atoms

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Subdivision Surfaces

Subdivision Surfaces. Computational Geometry Presentation Adam Lake. Motivation. Scalability across machines Speed of evaluation LOD in a scene Topological restrictions of NURBS surfaces Planes, Cylinders, and Torii. Motivation. Trimming is expensive and prone to numerical error

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Hidden Surfaces

http:// www.ugrad.cs.ubc.ca /~cs314/Vjan2013. University of British Columbia CPSC 314 Computer Graphics Jan-Apr 2013 Tamara Munzner. Hidden Surfaces. Clarification: Blinn-Phong Model. only change vs Phong model is to have the specular calculation to use instead of

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Surfaces

Surfaces. Lecture 6 (Modelling). Reminder: Homogenous Co-ordinates. 2D Translations cannot be encoded using matrix multiplication because points at the origin never move. Instead use homogenous co- ordinates

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Surfaces Surfaces of revolution Sweep surfaces Parametric surfaces Quadric surfaces

Surfaces Surfaces of revolution Sweep surfaces Parametric surfaces Quadric surfaces Bilinear surface Ruled surface Linear Coons surface Coons bicubic surface Bezier surface B-spline surface Rational B-spline surface. Surfaces of Revolution

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Surfaces

Surfaces. Gas Adsorption at Solid Surfaces. Definitions. Adsorption: A molecule (adsorbate) that forms a bond to the surface (adsorbent). Associative Adsorption: A gas molecule adsorbs without fragmentation. Dissociative Adsorption: A gas molecule adsorbs and fragmentation occurs.

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Planetary Surfaces

Planetary Surfaces. Main task Understanding the physics of planetary near-surface layers, including comets, Mars & Moon Main research topics Study of the mechanisms controlling the “activity” of comets by theoretical modelling as well as experimental simulation in a cryo -vacuum environment

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Surfaces

Surfaces. Locally a 2D manifold: i.e. approximating a plane in the ngbd. of each point. A 2-parameter family of points Surface representations : used to construct, evaluate, analyze points and curves, to reveal special properties, demonstrate the relationship to other geometric objects

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Surfaces

384 views • 20 slides

Hidden Surfaces

759 views • 73 slides

Implicit Surfaces

Implicit Surfaces. Tom Ouyang January 29, 2004. Outline. Properties of Implicit Surfaces Polygonization Ways of generating implicit surfaces Applications. What are Implicit Surfaces?. 2D Geometric shapes that exist in 3D space Surface representation through a function f(x, y, z) = 0

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Performance Surfaces

Performance Surfaces. d. *. *. F. (. x. ). =. F. (. x. ). +. F. (. x. ). (. x. –. x. ). *. d. x. x. =. x. 2. 1. d. 2. ¼. *. +. -. -. -. F. (. x. ). (. x. –. x. ). +. 2. 2. d. x. *. x. =. x. n. 1. d. n. ¼. *. +. -. -. -. -. -. F.

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