414 Machine Drawing
dharm
d:\N-Design\Des21-1.pm5
Delete option — it deletes a saved view port configuration by supplying the particular
name of the view port to be deleted.
Join option — it allows two adjacent view ports into a single view port by selecting
first the dominant view port and then selecting the other view port.
The dominant view port will inherit the second view port by merging
both.
Single option — this allows to display a single view port, displaying the active
configuration.
? option — it displays the number and co-ordinates of the current view port
and the identification number and screen positions along with the
names and screen positions of the saved view port configurations.
2 option — it allows the division of the current view port into equal parts, either
horizontally or vertically, based on the choice.
3 option — it permits the division of the current view port into three ports.
4 option — it creates 4 windows of equal size.
21.12 CREATION OF 3D PRIMITIVES
From the basic 3D primitives more complex solids can be built. A few such simple solids are
shown in Fig. 21.16.
(a) (b) (c)Fig. 21.16