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Gourand shading OR Intensity interpolation scheme
Now there polygon is rendered through linearly interpolating intensity values across the surface. Intensity values for all polygons are matched along with the values of adjacent polygons beside the general edges, hence eliminating the intensity discontinuities which can arise in flat shading.
Computations to be performed for all polygon surfaces rendered along with Gourand shading as:
1. Find out average unit normal vector at each polygon vertex.
2. Apply illumination model to all vertex to compute the vertex intensity.
3. Linearly interpolate the vertex intensities over the surface of the polygon.
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.
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composite transformation
Write a C program to create a window of specified size and position and draw the following objects with dimensions of your choice, to fit within the window. (a) A point (b) A
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