Based on the deep study of the connecting relationship of ventilation tunnels,a more efficient rapid automatic drawing method for the double-line diagram of mine ventilation system,namely,"virtual double-line" method,was creatively presented,which was much different in essence from the method of double-line with fixed width.

Combining the feature of virtual scene and emulate application based on the scene graph, a new fast rendering approach was proposed based on view frustum culling algorithm and image caching algorithm.

Design and implementation of automatic drawing system of kinematic diagram of mechanism of transmission scheme based on visual basic;

Using VisualLISP as the interface, the program realizes the automatic drawing of the hook envelope diagram.

According to compiling software , automatic drawing and electronic file of vertical and horizontal section is released by the operation of AutoCAD 2000.

Research on the Automatic Plotting of Marine Environment Isoline;

According to the coordinate transformation in graphics and projection theory,the paper explored the automatic dimensioning of drawing views and automatic plotting 2D drawing by programming function in the use of technology-driven,and programmed the procedures using the software VB to realize it.

The communication between Delphi and AutoCAD implements 2D curve automatic plotting by means of DDE technology.