A Quick Matching Method for Points Applicable to Method of Moments

Abstract

The invention discloses a kind of point fast matching method applicable to the method of moments, comprising the following steps: S1. read the point list of the model from the nastran grid file [P n ] Nnode Concatenate list with points to form list of surfels[Elem] Nelem , and generate a model view; S2. The user operates the model view to perform rotation, translation, zoom in / out, and restore operations, modify the coordinate axis, coordinate range, and upper left corner coordinates of the current screen display area, and trigger the initialization process before point matching; S3 .The user turns on the point matching mode of the mouse on the model; S4. The user circulates and matches N points in the model to form a list of matching points [P track ] N ; S5. The user closes the point matching mode; S6. Repeat steps S2-S5 until the quick matching of all points in the model is completed, and all matching points are collected to form [P track ] N′ . The invention effectively improves the speed and accuracy of point matching in surface element grids.

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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