What is the role of ray tracing in visible surface detection? Explain How scan line algorithm is used for back face detection.

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The ray-tracing algorithm can be used to find visible surfaces, as opposed to a more complicated algorithm that can be used to generate those o-so-pretty images. Ray tracing is an image based algorithm. For every pixel in the image, a ray is cast from the center of projection through that pixel and into the scene.

 

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