VECTOR CUT PRINCIPLE AND METHOD FOR 3-D TECTONIC-STRATIGRAPHIC BASIN FRAMEWORK

The intensity of 3-D vector cut is an important indicator for the quality test of a 3-D digital basin model established. After the reiteration of vector cut principle of the B-Rep model-based 3-D digital basin, this paper deals with the technical approaches and methods for the actualization of the vector shearing function on a microcomputer. On the basis of vector shearing of four graphical primitives: line, polygon, surface and text, the author established a relatively perfect vector cut model for 3-D digital tectonic-stratigraphic basin, and, furthermore, wrote the corresponding software. The vector cut analysis of the Zhusan depression by means of this technical approach and software system has brought about an expected result.