Fast and stable simulation of virtual water scenes with interactions

Liu, Shiguang; Xiong, Yuan

doi:10.1007/s10055-013-0222-0

Cited by 13 publications

(6 citation statements)

References 12 publications

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“…The time step is 20 ms. We have elected to benchmark our method by comparing it to our implementation of the interaction method of [11], which we find to be the most advanced of the real-time heightfield methods, especially when it comes to handling heavy and large bodies that can be submerged. Other heightfield methods such as [9,13,14] would look very similar to the Thürey et al method in our test cases with heavy objects, since none of these prevent water from passing through the bodies. For the floating objects, we do not claim that our method currently achieves a quality similar to any of the mentioned methods.…”

Section: Resultsmentioning

confidence: 94%

“…The heightfield water-body interaction research has mostly concentrated on handling floating objects [8][9][10]14]. In these methods, the bodies are superimposed on the water, which makes buoyancy and drag almost trivial to calculate.…”

Section: Interaction With Solidsmentioning

confidence: 99%

“…The traditional solution in real-time methods is to let the water be mostly unaffected by the object, that is, allowing water and bodies to overlap (e.g., [8][9][10][11][12][13][14]). In these methods, buoyancy and drag are easy to apply based on the submerged part of the object.…”

Section: Introductionmentioning

confidence: 99%

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Rigid Body Interaction for Large-Scale Real-Time Water Simulation

Kellomäki

2014

International Journal of Computer Games Technology

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Simulating large amounts of water in real time is often achieved using heightfield methods. Allowing the water to interact with rigid bodies is essential for applications such as games, but traditional heightfield interaction methods concentrate on water-tobody effects by letting water flow through the bodies. We instead take an approach where the bodies block water. Our earlier method is improved in several ways, taking steps toward a single method to create both water-to-body and body-to-water effects. The new method is also visually compared to a traditional method by Thürey et al. A drawback of our method is that it has some grid aliasing artifacts that appear especially when the method is used for floating bodies. However, our method is demonstrated to work together with the Thürey method, which allows us to get the best of both worlds to simulate both floating and blocking bodies in a single scene. The method runs in real time for large areas of water even with a very limited GPU budget.

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Section: Resultsmentioning

confidence: 94%

Section: Interaction With Solidsmentioning

confidence: 99%

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Rigid Body Interaction for Large-Scale Real-Time Water Simulation

Kellomäki

2014

International Journal of Computer Games Technology

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“…To increase the simulator efficiency in the simulation of marine environments, a migration from the osgOcean library to the faster and novel rendering method based on Graphics Processing Units (GPUs) proposed in [13] is planned.…”

Section: Discussionmentioning

confidence: 99%

Kelpie: A ROS-Based Multi-robot Simulator for Water Surface and Aerial Vehicles

Mendonca

Santana

Marques

et al. 2013

2013 IEEE International Conference on Systems, Man, and Cybernetics

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Testing and debugging real hardware is a time consuming task, in particular for the case of aquatic robots, for which it is necessary to transport and deploy the robots on the water. Performing waterborne and airborne field experiments with expensive hardware embedded in not yet fully functional prototypes is a highly risky endeavour. In this sense, physicsbased 3D simulators are key for a fast paced and affordable development of such robotic systems. This paper contributes with a modular, open-source, and soon to be freely online available, ROS-based multi-robot simulator specially focused for aerial and water surface vehicles. This simulator is being developed as part of the RIVERWATCH experiment in the ECHORD european FP7 project. This experiment aims at demonstrating a multi-robot system for remote monitoring of riverine environments.

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“…The interaction mainly includes the ship wave and ship motion model. To simulate the ship wave, several approaches were tried, such as the moving grid with particle-based ship motion [36], Perfectly Matched Layers grid [37] and multi-LOD grid [38]. Additionally, Weerasinghe et al [39] combined the ship motion model with the geometry of the IFFT sea surface.…”

Section: Ocean Wave Rendering Based On the Gerstner Wave Modelmentioning

confidence: 99%

Ocean Wave Rendering with Whitecap in the Visual System of a Maritime Simulator

Chen

Yin

2017

CIT

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The whitecap is an important oceanographic phenomenon. However, existing whitecap rendering methods do not successfully generate realistic whitecaps. To solve this problem, this paper presents a real-time whitecap rendering method applied to the visual system of a maritime simulator. The method takes the vertical acceleration on the wave crest as the criterion of whitecap generation. The Fourier coefficient of the vertical acceleration is provided, and a continuous mathematical model computing the whitecap coverage is built. The vertical acceleration is the variable of the model. The lifetime of the whitecap's existence can be controlled by the parameter of the model, and the parameter is computed with the genetic algorithm. The average of the computed whitecap coverage is equal to the whitecap coverage computed by the stochastic method and is close to the whitecap coverage computed by the empirical formula. The whitecap coverage is used as the blending factor to blend the pixel color of the whitecap texture and that of the sea surface. The presented method has sound theoretical support, with small computational complexity. The rendered whitecap is closer to the description of the Beaufort wind force scale than before.

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Fast and stable simulation of virtual water scenes with interactions

Cited by 13 publications

References 12 publications

Rigid Body Interaction for Large-Scale Real-Time Water Simulation

Rigid Body Interaction for Large-Scale Real-Time Water Simulation

Kelpie: A ROS-Based Multi-robot Simulator for Water Surface and Aerial Vehicles

Ocean Wave Rendering with Whitecap in the Visual System of a Maritime Simulator

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