Water Wave Animation With Profile Buffers to Reduce Distortion
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Solution Overview
Problem
Existing methods for simulating water flow in video games, such as flowmap techniques, suffer from computational inefficiencies and large distortion artifacts, particularly in regions with high velocity magnitudes.
Innovation Solution
A wavelet-based methodology enhanced by a pre-computed profile buffer technique is used to simulate water waves, incorporating a profile buffer to improve performance and reduce computational intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If flowmap technique is used to animate water, then computational efficiency is improved, but distortion and stretching artifacts increase
Solution Approach 1:
The water surface is divided into multiple wavelets, each representing a localized wave component. This segmentation allows each wavelet to be processed and rendered independently, reducing the propagation of distortion artifacts across the entire water surface while maintaining computational efficiency through parallel processing of individual wavelet components.
Solution Approach 2:
Different regions of the water surface are treated with different wavelet characteristics based on local flow conditions. The profile buffer stores local wave properties (amplitude, frequency, direction) that are specific to each region, allowing accurate representation of local wave behavior without being affected by global distortion artifacts.
2Manufacturing precision
If wavelet-based methodology with profile buffer is used, then distortion artifacts are reduced, but computational intensity increases
Solution Approach 1:
The profile buffer is pre-computed and stored before the main rendering process. This preliminary computation of wavelet parameters (amplitude, frequency, direction) allows the actual water rendering to proceed with simpler, faster operations by simply querying pre-computed values from the buffer during the rendering pass.
Solution Approach 2:
Instead of performing complex wavelet calculations in real-time during rendering, the patent uses a profile buffer that copies and stores pre-computed wavelet parameters. This allows the rendering process to work with simplified data structures rather than performing intensive computations during the critical rendering path.
Data Source
AI summary
A plurality of initial values of a water wave function is defined. The water wave function is configured to simulate the water flow in a domain. A plurality of profile buffer values associated with the plurality of water waves of the water wave function is calculated. A plurality of water height values of the plurality of water waves of the water flow is determined. Each of the plurality of water height values is associated with a product of a direction weight value and an in-situ profile buffer value of a respective one of the plurality of water waves. A plurality of surface normal vectors of the plurality of water waves of the water flow is determined based on gradient vectors associated with the plurality of water height values. The water flow is rendered based on the plurality of water height values and the plurality of surface normal vectors.