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Distinguish between bitBlt and pixBlt?
Raster functions that manipulate rectangular pixel arrays are usually referred to as raster ops. Moving a block of pixels from one location to another is also known as a block transfer of pixel values. On a bilevel system, this operation is known as a bitBlt (bit-block transfer), on multilevel system t is known as pixBlt.
Polygon Meshes - Modeling and Rendering A polygonal surface to be sketched may not be easy and may have enormous curls and curves. Illustration: a crushed piece of paper or cr
Polygon Tables - curves and surfaces All polygons are analogous to a graph G (V, E). Remember that the analogy in which a polygon surface can be specified along with as a set
Potentially entering and leaving points - P E and P L The intersection point of the line and window might be classified either like potentially leaving or entering. Before g
Approaches to Area Filling Some other approaches to area filling are Scan line polygon fill algorithm Boundary fill algorithm Flood fill algorithm.
Merits -Phong shading or Normal Vector Interpolation Shading Hence by finding intensities at various points across the edge we determine the intensity that is varying across t
What are the advantages of rendering by patch splitting? i. It is fast-especially on workstations with a hardware polygon-rendering pipeline. ii. Its speed can be varied b
what is refresh buffer/ identify the content and organisation of the refresh buffer for the case of raster display and vector display.
short note on shading
Important points about the bezier curves - modeling and rendering 1) Generalizing the idea of Bezier curve of degree at n based upon n+1 control point p0,.....pn P(0)= P 0
Use DDA algorithm to get the output of your program as shown in Figure ANs: Use DDA( ) function to plot line segments that have end points on diametrically opposite points
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