Interactive3D Modeling Technology And Its Application Based On OpenGL

In today’s growing science and technology, EMC analysis software designed to killa lot of risk in the bud, which greatly shorten the design cycle,early in the designsimulate of electromagnetic compatibility analysis.The software reduces the time andthe cost which incarnates the superiority of the analytical software. Pre-processing is toprovide the correct EMC analysis models,so it is particularly important in thepre-processing, the core calculation, post-processing of the software.Based on the OpenGL platform, I study the parametric modeling, some captureand draw, which belong to in the pre-processing the contents of “EMC analysissoftware of communication vehicle“,the main contains as the following:1. Some modeling of EMC analysis software of communication vehicle to createand modify models only through the data interface,whose function is imperfect. In orderto achieve interactive and parametric modeling, the paper uses a linked list datastructure for dynamic graphic data operations and excludes the original array operationson the data. By the technology of picking, deletion and so on, the paper builds real-timeinteraction the analytical model,including triangle, square, cylindrical, conical and othergeometric units constitute. Thus, the software has been improved modeling capabilities,which reflects the interactive graphics software intuitive, real-time and dynamic designrequirements;2. Point to capture of the OpenGL environment MFC-based model editor is a keymodule. In OpenGL, the operation of the data comes down to the vertex of the operation,therefore, point of capture can be achieved on a re-draw the key. Making Use of somegraphics geometry, the paper achieve to capture the endpoint, midpoint, and the edge ofany point of the surface element, and the software draws surface element by capturing,which greatly improves the interactivity and usability of software.Software testing show that the model shows and editing module that researched inthis article has a high degree of utility, ease of use.