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Algorithm (scan-line):
For each scan line perform from step (1) to (3).
1) For all pixels on a scan-line, arrange depth [x]=1.0 i.e. max value and Intensity [x] = background-color.
2) For each polygon means, get all pixels on the current scan-line as S1 that lies inside the polygon. For all of these x-values:
a) Compute the depth z of the polygon at (x,y)
b) If z < depth [x], set depth [x] =z and intensity consequent to the polygon's shading.
3) When all polygons have been identified; the values comprised in the intensity array present the solution and can be a duplicate in the frame-buffer.
Matrix for Orthographic Projection Orthographic projections are projections into one of the coordinate planes x=0, y=0or z=0. The matrix for orthographic projection on the z=0
Important point about the De casteljeau algorithm 1) Bezier Curve: P (u) = ................ (1) Here B n,i (u) = n c i u i (1 - u) n-i ..
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1. What is the purpose behind the Staircase effect? Ans. The approximation concerned in the calculation for finding of pixel position concerned in the display of lines and th
Consider the line segment AB in 3-Dimentional parallel to the z-axis along with end points A (- 5,4,2) and also B (5,-6,18). Carry out a perspective projection upon the X=0 plane;
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example for desigining animation sequence
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Parametric Continuity Conditions To ensure a smooth transitions from one section of a piecewise parametric curve to the next, we can impose various continuity conditions at the
what is horizontal retrce
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