A method for drawing dynamic arrows in the drawing of military symbols

Abstract

The invention provides a method for drawing dynamic arrows in the drawing of military symbols. Two control points are demarcated in a three-dimensional geographic information system, and then other vertex data of the arrows, standard dynamic arrows and standard arrows are generated according to the two control points. The swallowtail dynamic arrow only needs to perform vector transformation and color mapping on each vertex. For the offensive arrow, each vertex is assigned a value through vertex data interpolation calculation and color mapping, and the arrow is triangulated. Finally, in the rendering process An increment of color transparency is added to the arrows that need to be rendered, so that the upper arrows plotted on the geographic information system have a dynamic effect, which can more clearly assist military commanders in formulating battle plans. Combined with the display of the three-dimensional geographic information system with real terrain, the invention realizes the effect of three-dimensional dynamic arrows in a simpler and faster rendering manner, and provides intuitive, rich and vivid battlefield situation information for combat command and decision-making.

Description

technical field [0001] The invention relates to the field of three-dimensional geographic information drawing, in particular to a method for drawing dynamic arrows in a three-dimensional geographic information system. Background technique [0002] Human beings are already in the information age, and information warfare has become an important combat method in the information age. In the future, a large amount of information resources on the battlefield will need to be presented to combat commanders in the form of digital maps. As a commonly used graphic symbol in army combat command, combat simulation and other military-related activities, three-dimensional military symbol is an indispensable medium for transmitting battlefield information. Military standard symbol plotting provides intuitive, rich and vivid battlefield situation information for combat command and decision-making. Non-regular military standard symbol plotting forms are diverse, especially the use of non-regu...

AI Technical Summary

Problems solved by technology

[0003] The method proposed by Zhao Zhou et al. to determine the geometric shape of the arrow using external input points, and then obtain the required arrow drawing method for each control point through the geometric parameters of the arrow and the arrow body, because too many points need to be input from the outside , it is difficult for cartographers to quickly and accurately draw arrow symbols on the map

At present, there are various drawing methods in the field of military standard drawing, and some drawing methods are too cumbersome, which limits the operation of the mappers, and the drawn military standard symbols are displayed statically in the geographic information system, which cannot clearly represent the battlefield situation information , especially combat intentions, intentions and trend information, so it is very meaningful to simplify the operation of plotters and the research of dynamic military standards

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