Abstract
This paper proposes a method for generating an animation of water droplets and their streams on a glass plate, such as a windowpane or windshield, taking into account the dynamics between fluid and solid. Water droplets run down an inclined glass plate if their masses are greater than a static critical weight. The streams from the droplets do not run straight down the glass plate but meander and some amount of water remains behind the flow due to the nature of the wetting phenomenon. Therefore, the mass of the water droplet decreases. When the mass becomes smaller than a dynamic critical weight, the flow stops. In this paper, a discrete model of a glass plate is developed to simulate the streams from the water droplets as described above. The glass plate is divided into small meshes. For rendering scenes through a glass plate upon which there are water droplets, we also develop a highspeed rendering method taking into account reflection and refraction of light. Instead of calculating the intersections between the ray and the objects, one of the most time-consuming processes in ray tracing, the proposed method determines pixel colors by using the intersection between the ray and a cuboid onto which objects in a scene are projected. Animations of rain droplets on a pane or windshield demonstrate the usefulness of the proposed method.
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References
Arvo J, Kirk D (1989) A Survey of Ray Tracing Acceleration Techniques. In: Glassner AS (ed) An Introduction to Ray Tracing. Academic Press, London San Diego, pp 201–262
de Gennes PG (1985) Wetting: Statics and Dynamics. Rev. Mod. Phys. 57(3): 827–863 Fournier A (1986) A Simple Model of Ocean Waves. Computer Graphics 20 (4): 75–84
Greene N (1986) Environment Mapping and Other Applications of World Projections. IEEE Computer Graphics and Applications 6 (11): 21–29
Hardy AC, Perrin FH (1932) Principles of Optics. McGraw-Hill, New York
Janosi IM, Horvath VK (1989) Dynamics of Water Droplets on a Window Pane. Physical Review 40 (9): 5232–5237
Kaneda K, Yuan G, Tomoda Y, Baba M, Nakamae E, Nishita T (1991a) Realistic Visual Simulation of Water Surfaces Taking into Account Radiative Transfer. Proc. Second International Conference Computer Aided Design and Computer Graphics: 25–30
Kaneda K, Okamoto T, Nakamae E, Nishita T (1991b) Photorealistic Image Synthesis for Outdoor Scenery under Various Atomospheric Conditions. The Visual Computer 7 (5–6): 247–258
Kass M, Miller G (1990) Rapid, Stable Fluid Dynamics for Computer Graphics. Computer Graphics 24 (4): 49–57
Mastin GA, Watterberg PA, Mareda JF (1987) Fourier Synthesis of Ocean Scenes. IEEE Computer Graphics and Applications 7 (3): 16–23
Max NL (1981) Vectorized Procedural Models for Natural Terrain: Waves and Islands in the Sunset. Computer Graphics 15 (3): 317–324
Nakamae E, Kaneda K, Okamoto T, Nishita T (1990) A Lighting Model Aiming at Drive Simulators. Computer Graphics 24 (4): 395–404
Nishita T, Miyawaki Y, Nakamae E (1987) A Shading Model for Atmospheric Scattering Considering Luminous Intensity Distribution of Light Sources. Computer Graphics 21 (4): 303–310
Peachey DR (1986) Modeling Waves and Surf. Computer Graphics 20 (4): 65–74
Ts’o PY, Barsky BA (1987) Modeling and Rendering Waves: Wave-Tracing Using Beta-Splines and Reflective and Refractive Texture Mapping. ACM Transactions on Graphics 6 (3): 191–214
Whitted T (1980) An Improved Illumination Model for Shaded Display. Comm. ACM 23 (6): 343–349
Watt M (1990) Light-Water Interaction using Backward Beam Tracing. Computer Graphics 24 (4): 377–385
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© 1993 Springer Japan
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Kaneda, K., Kagawa, T., Yamashita, H. (1993). Animation of Water Droplets on a Glass Plate. In: Thalmann, N.M., Thalmann, D. (eds) Models and Techniques in Computer Animation. Computer Animation Series. Springer, Tokyo. https://doi.org/10.1007/978-4-431-66911-1_17
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DOI: https://doi.org/10.1007/978-4-431-66911-1_17
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-66913-5
Online ISBN: 978-4-431-66911-1
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