cone bounding

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