NAME
	cone bounding	


SYNOPSIS
	draw cone containing scattered points


AUTHOR
	Massimiliano Bavelloni, Radioastronomy department C.N.R. Bologna
	Italy.
	E-mail: lau13@boira2.bo.cnr.it
	        nanni@astbo1.bo.cnr.it


TYPE
	Mapper


LANGUAGE
	C


INPUT
	field 1D 3-space irregular float (required)


OUTPUT
	field 1D uniform real	


PARAMETERS
	name		type		default		min 	max

	RED_bound	float		0.95		0.0	1.0
	GREEN_bound	float		0.95		0.0	1.0
	BLUE_bound	float		0.95		0.0	1.0
	N_Ticks		float		100.0		1.0	500.0



DESCRIPTION
	Draw geometric cone around 3D scattered points in order to
	display astronomical points (galaxies). Galaxy coordinates
	have been already converted from Spherical Coordinates into
	Cartesian Coordinates.
	In the computational section coordinates are converted into
	Spherical ones and then converted again in Cartesian coordinates.
	The cone is always centered in the origin (x = 0, y = 0, z = 0)
	point.
	Module draw axes ( x axis -> red, y axis -> green ,
	z axis -> yellow), set color of cone (default white). Arc of
	circle is aproximated bye N_Ticks (default 100).
	
	This module can also be used with other kind of data, may be
	used with any kind of scattered points inside a 3D space.
	

EXAMPLE NETWORK

              READ UCD            GENERATE COLORMAP
                |                      |
                |----------------|     |
                |                |     |
                |              UCD CONTOUR
                |                     |
                |---------------|     |
            UCD TO FIELD        |     |
                |             UCD TO GEOM
                |                 |
                |                 |
            CONE BOUNDING         |
                |                 |
                |-----------------|
                        |
                GEOMETRY VIEWER


	
	Other Network



              READ UCD            GENERATE COLORMAP
                |                      |
                |----------------|     |            
                |                |     |
                |              UCD CONTOUR
                |                     |
                |---------------|     |
            UCD TO FIELD        |     |              ANIMATED FLOAT
                |             UCD TO GEOM                | 
                |                 |                      |
                |                 |                 GEO CONTROL
            CONE BOUNDING         |                      |
                |                 |                      |
                |-----------------|----------------------|
                        |
                GEOMETRY VIEWER



Notes:
	READ UCD (".inp") file then create geometry scene. 
	You can rotate and transform the scene with ANIMATED FLOAT and 
	GEO CONTROL. You can obtain simple animation.

	coma.inp (ucd data) (coma galaxy cluster) 
		             10 < RA < 15
		             20 < DEC < 40
		              0 < VEL < 9000  	

	
	UCD TO FIELD (from I.A.C.) module filter
        

	GEO CONTROL (from I.A.C.) module filter	


	UCD TO FIELD, set choice parameter to "irregular" 

	In Geometry viewer subsystem set rendering methods as POINTS





          
makefile for workstation digital 3000 (CPU Alpha) OSF Unix