Point quick matching method suitable for moment method

Abstract

The invention discloses a point quick matching method suitable for a moment method. The point quick matching method comprises the following steps that: S1, a point list [Pn] Nnode and a point connection list of a model are read from a nastran grid file to form a surface element list [Elem] Nelem, and a model view is generated; S2, a user operates the model view to rotate, translate, zoom in/zoom out and restore the model view, the coordinate axis and the coordinate range of a current display area of a screen and the coordinates of the upper left corner of the screen are modified, and an initialization process before point matching is triggered; S3, the user starts a point matching mode of a mouse on the model; S4, the user circularly matches N points in the model to form a matching point list [Ptack] N; S5, the user closes the point matching mode; and S6, the steps S2-S5 are circularly executed until quick matching of all the points in the model is completed, all matching points are collected, and [Ptack] N' is formed. According to the method, the point matching speed and accuracy in a surface element grid are effectively improved.

Description

technical field [0001] The invention relates to the field of electromagnetic calculation, in particular to a point fast matching method suitable for the method of moments. Background technique [0002] In the field of electromagnetic computing, it is often necessary to use the method of moments (MOM) for calculations, but in the pre-processing process of the method of moments, it is often necessary to quickly match points; for now, super-large calculation models involve millions and more Tens of millions of grids and vertices, the traditional search method will cause the calculation to freeze when the mouse is tracking on the model, resulting in a very bad user experience, and tracking and calculating vertices, using the estimation method to roughly input the vertex coordinates will lead to The input coordinates in the calculation of the method of moments are not repeated with the vertices of the grid, and there will be a certain deviation, which leads to the fact that the r...

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Problems solved by technology

[0002] In the field of electromagnetic computing, it is often necessary to use the method of moments (MOM) for calculations, but in the pre-processing process of the method of moments, it is often necessary to quickly match points; for now, super-large calculation models involve millions and more Tens of millions of grids and vertices, the traditional search method will cause the calculation to freeze when the mouse is tracking on the model, resulting in a very bad user experience, and tracking and calculating vertices, using the estimation method to roughly input the vertex coordinates will lead to The input coordinates of the calculation of the moment method are not repeated with the vertices of the grid, and there will be a certain deviation, which leads to the fact that the relevant vertices cannot be found when the numerical calculation is performed for vertex matching, which affects the calculation process

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