基于Android平台的CAD标准图形交换文件浏览系统.pdf
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2022-06-21
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The CAD standard graphics exchange file browsing system based on Android platform Abstract
II
Abstract
With the Android devices more and more used in the office, study, entertainment, this
paper first introduces the current development trend of the Android platform, and also
analyzes the mostly using in the field of professional development, and at the other hand,
combining the CAD graphics file (DXF and IGES)which as the standard of CAD graphics
interchange format, we designed and developed the CAD standard graphics interchange
file browsing system based on Android platform, it is easy for people to use Android
mobile equipment to check the CAD drawings and information anytime and anywhere.
This paper firstly set up the Android development environment, through installing
the JDK (Java Development Kit) to support Java Development environment, then chosing
Eclipse as an integrated Development environment, at the other hand, basing the Eclipse
integrated Development environment, installs the Android SDK and ADT (Android
Development Tools) plug-ins, and also configs the environment variable for Android
Development, and also using ADT tools to create the AVD (Android Virtual Device) and
the Android development environment of the Dalvik Virtual machine debugging
monitoring service (Android DDMS) to debug program.
Then through analyzing the information structure of the CAD standard graphics
interchange file, we write the Java interface class to read primitive information, and
succeed to read the information of the CAD standard graphics interchange file. Then ,
through using the linear data structure of Java to access the reading primitive information.
Because the Entities section is so important sections, so we spend most time to program the
code to read, and it is to ready for the graphics drawing parameters.
Then we build the Android application framework, and also simply designed the UI of
the program, and also divided the program in modules, in the program ,using the
multi-thread processing technology to read the CAD standard graphics interchange file,
and draw graph at the same time, it completed to draw the standard graphics interchange
file’s point, line, circle, arc, polyline and other graphs, and also made the corresponding
processing to the layer information and block information.
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