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Output Primitives and Geometric Transformations
You learnt how some basic geometric objects such as line segments, circles, ellipses and other curves are processed for plotting on a display unit. In most of the graphics packages you will find that polygons are also used as standard output primitives. Filled polygons with single solid color (or other alternatives for filling the interior) are provided as shape primitives.
Linearly interpolate - Modeling and Rendering I 4 = I 1 + t (I 2 - I 1 ); here t = (|y 1 - y 2 |)/(|y 1 - y 2 |) I D = I A + t (I B - I A ); here t = (|AD|)/(|AB|)
Silicon Graphics - Hardware for computer animation The SGI platform is one of the most broadly used hardware platforms in professional or broadcast feature computer animation
Seed fill algorithm A seed fill algorithm starts with a known initial interior point of the polygon and spreads out to determine other interior points to fill the given closed
What is persistence? The time it takes the emitted light from the screen to decompose one tenth of its original intensity is known as persistence.
Lamberts Cosine Law - Diffuse Reflection "LAMBERTS COSINE LAW" specify that the radiant energy from any minute surface area dA in any direction θ relative to the surface usual
xy-Shear about the Origin - 2-d and 3-d transformations Suppose an object point P(x,y) be moved to P'(x',y') as a outcome of shear transformation in both x- and y-directions a
Three dimensional display methods: Among the simplest three dimensional surface representations are the polygonal surfaces. A polygonal surface is described by vertices
when dda algorithm is more efficient than bresenhem line drawing algorithm
example for desigining animation sequence
Define B-Spline curve? A B-Spline curve is a set of piecewise (usually cubic) polynomial segments that pass close to a set of control points. Though the curve does not pass by
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