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Advanced Photon Tracing for Animated Water and Caustics Simulation

Learn how to create stunning water animations using advanced photon tracing techniques. Follow the steps to generate water waves and manipulate the index of refraction for realistic effects. Includes demos with detailed instructions.

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Advanced Photon Tracing for Animated Water and Caustics Simulation

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  1. Animated Water and Caustics Michael Matczynski December 9, 2004

  2. Pass 1: Photon Tracing • Create photons from PhotonSources • Trace photons through the scene using tracePhoton() • When a photon hits a diffuse surface, store it in PhotonMap

  3. Pass 2: Rendering • Render image using the standard ray tracing algorithm, but now add photon contributions • radianceEstimate() calculates color contribution at each hit point using data in PhotonMap

  4. Animated Water Demo • Animate.exe creates a sequence of frames simulating water waves • 1000 photons / 10 samples per pixel • 24 frames • 20 minutes on 6 Xeon 2.0ghz workstations

  5. Index of Refraction Demo • Animate.exe varies index of refraction (0.8-2.8) and rotation angle • 5000 photons / 15 samples per pixel • 96 frames • 17 minutes on 6 Xeon 2.0ghz workstations

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