Method of drawing a cubic view using a minor and a major axis of

Details Method of drawing a cubic view using a minor and a major axis of Method of drawing a cubic view using a minor and a major axis of

1996-07-05

1999-02-02

Zimmerman, Mark K.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

G06T 1740

Patent

active

058671684

ABSTRACT:
The method of drawing a cubic view, and more particularly to a method of drawing a cubic view by using data of plan views. First, displaying three model projection planes 1 for composing a cubic view on the display, and designating the plan view to be projected, the plane standard point and direction on the designated plate are specified. Then, the specific surface of the model projection plane and the direction on the model projection plane are designated. Finally, the display standard point is designated at an arbitrary position on the display. Accordingly, operating parameters shown in FIG. 1 overlaps the system of coordinates of 45.degree. rotation of the plan view on the system of coordinates of the major axis and minor axis of the ellipse on the projection plane, and obtains a projection view by multiplying by the ratio a/b of the major axis (a) and minor axis (b) in the major axis direction and minor axis direction, and this obtained projection view is matched with the plane standard point on the plan view at the display standard point, and the cubic view is displayed so that the direction on the plan view may coincide with the direction of the model projection plane.

REFERENCES:
patent: 5019809 (1991-05-01), Chen
patent: 5067167 (1991-11-01), Berger
patent: 5115494 (1992-05-01), Seki

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