Re: [Closed REQ 5978]: points and module

[daemon]

> How can I let geomview know that it should display them as dots and
> not as coordinates of a surface?

The easiest way to display a cloud of points in geomview is to send a VECT
object.  For example, your C program might write (say to its standard output):

   (geometry points {
	VECT
	5 5 0
	1 1 1 1 1
	0 0 0 0 0

	.5 0 -1
	1 1 0
	0 1 .5
	0 0 0
	.5 1 0
    })

(The indentation and arrangement of line breaks is arbitrary.)
This would display five colorless points.  If you send several such
(geometry ... { ... }) commands, geomview's display will change as it
receives each one.

Instead of a module, your program could still write to stdout but be used as:

    yourprogram | togeomview

Here "togeomview" is a program which starts a copy of geomview and pipes its
input to geomview.  This would make it easy to give command-line arguments
to your program, or to have it read from the terminal.

Alternatively, you could write the VECT data alone (without "(geometry ... {"
and "})" header and trailer) to each of a series of files, then use
geomview's Animator module to display them in sequence.

Note: if you write your own module, be sure to fflush(stdout) as you
finish each command to ensure geomview receives it all!