Common method and system for three-dimensional simulation of sundial

Abstract

The invention relates to a common method for three-dimensional simulation of a sundial. The method comprises the following steps that S10, the three-dimensional models of the surface and the pointer of the sundial are built; S11, the three-dimensional model of the sundial is built; S12, the solar altitude and the solar azimuth of a site at different moments are calculated; S13, the positions of the shadows of the pointer formed on the face at all the moments from sunrise to sunset are calculated, and the positions of all moment lines are obtained; S14, the motion track of a sundial shadow in any time frame from the sunrise to the sunset is dynamically simulated, and the simulation data from the sunrise to the sunset in one day or a year are output. The designed sundial is visually shown in a three-dimensional mode, the positions of the moment lines are visually simulated and analyzed, a visual and convenient simulation analysis and auxiliary demonstration tool is provided for sundial individualized design, city landscaping planning, science teaching and research and science popularization education, and the effect of sundial design and building is improved.

Description

technical field [0001] The invention relates to a three-dimensional simulation method and system for a general sundial. Background technique [0002] The sundial is a great invention of time measurement in ancient China. It can be used to measure the true solar time at the observation point. In modern times, the sundial is an intuitive teaching aid in the teaching of astronomy, introduction to the earth, agricultural meteorology, etc., and it, like urban sculpture, can integrate into the surrounding environment, increase the scientific popularization function of urban sculpture, highlight the scientific atmosphere of the city, and improve the quality of urban sculpture. ornamental value. Building sundials in campuses, parks or tourist destinations can not only observe the time, but also add a humanistic landscape in the green environment, making the location not only have elegant cultural appreciation taste, but also enhance the ornamental value of the garden, increase the ...

AI Technical Summary

Problems solved by technology

Timeline angle measurement method can quickly determine the angle of the timeline without calculation, but due to the limitations of various measured objective conditions, it cannot guarantee that the angle of the timeline at each time of the day can be successfully measured

These methods for determining the position of the sundial hour line are difficult to simultaneously meet the individual requirements of the sundial construction unit in terms of setting location, orientation and inclination of the sundial surface, and the manpower, material resources and time are costly.

[0007] The traditional sundial design only designs the style of the sundial line diagram through the calculation formula of the sundial surface line diagram. Individual requirements regarding inclination

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