By Henrik Wann Jensen
Photon mapping, an extension of ray tracing, makes it attainable to successfully simulate international illumination in advanced scenes. Photon mapping can simulate caustics (focused gentle, like shimmering waves on the backside of a swimming pool), diffuse inter-reflections (e.g., the "bleeding" of coloured mild from a purple wall onto a white ground, giving the ground a reddish tint), and taking part media (such as clouds or smoke). This e-book is a pragmatic advisor to photon mapping; it offers the idea and practical perception essential to enforce photon mapping and simulate every kind of direct and oblique illumination efficiently.
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