ncl_tdpack man page

Tdpack — A set of routines allowing one to draw representations of three-dimensional objects.

Synopsis

TDPACK (which stands for "Three Dimensional PACKage") is a collection of routines for projecting objects from a 3-dimensional coordinate system having U, V, and W axes to a 2-dimensional projection plane having X and Y axes and/or for drawing the projections of those objects. This can be referred to somewhat loosely as "drawing objects in three dimensions".

Tdpack consists of the following routines:

Initialization Routines:
TDINIT -
Define eye position, line of sight, up direction, and stereo flag.
TDPARA -
Define the reference parallelogram.
TDCLRS -
Define colors for TDPACK.
Parameter-Access Routines:
TDGETI -
Get the integer value of an internal parameter.
TDGETR -
Get the real value of an internal parameter.
TDGTRS -
Get the definition of a specified rendering style.
TDSETI -
Set the integer value of an internal parameter.
TDSETR -
Set the real value of an internal parameter.
TDSTRS -
Define a specified rendering style.
Point-Transforming Routines:
TDPRPT -
Project from 3-space to the projection plane.
TDPRPA -
Project from 3-space to the plane of the reference parallelogram.
TDPRPI -
Project from the plane of the reference parallelogram to 3-space.
Line-Drawing Routines:
TDLINE -
Draw the projection of a line in 3-space.
TDLNPA -
Draw the projection of a line in the plane of the reference parallelogram.
Grid-Drawing Routines:
TDGRDS -
Draw the grids on all the faces of a box in 3-space.
TDGRID -
Draw the grid on a particular face of a box in 3-space.
Label-Drawing Routines:
TDLBLS -
Draw labels for all faces of a box in 3-space.
TDLBLA -
Draw labels for a particular face of a box in 3-space.
TDPLCH -
Draw characters in the plane of the reference parallelogram.
Surface-Drawing Routines:
TDDTRI -
Draw triangles defined by a triangle list.
TDSTRI -
Add triangles defining a simple surface to a triangle list.
TDITRI -
Add triangles defining an isosurface to a triangle list.
TDMTRI -
Add triangles defining a 3D marker to a triangle list.
TDCTRI -
Order the triangles in a triangle list for proper rendering.
TDSORT -
Cut triangles with a plane perpendicular to one of the axes.
TDOTRI -
Generic sorting routine

C-Binding Synopsis

#include <ncarg/ncargC.h>

c_tdinit
c_tdpara
c_tdclrs
c_tdgeti
c_tdgetr
c_tdgtrs
c_tdseti
c_tdsetr
c_tdstrs
c_tdprpt
c_tdprpa
c_tdprpi
c_tdline
c_tdlnpa
c_tdgrds
c_tdgrid
c_tdlbls
c_tdlbla
c_tdplch
c_tddtri
c_tdstri
c_tditri
c_tdmtri
c_tdotri
c_tdctri
c_tdsort

Access

To use Tdpack, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.

Messages

When error conditions are detected, the support routine SETER is called. By default, SETER writes a message to the standard error file (as defined by I1MACH(4)) and then terminates execution. It is possible to put SETER into recovery mode and regain control after a recoverable error (which includes all of the possible errors).

The possible error messages are listed below. All errors are recoverable in the sense that a user program which has called ENTSR to set recovery mode will get control back after one of these errors occurs.

TDGETI - UNCLEARED PRIOR ERROR
TDGETR - UNCLEARED PRIOR ERROR
TDGETR - UNRECOGNIZED PARAMETER NAME
TDINIT - UNCLEARED PRIOR ERROR
TDPARA - UNCLEARED PRIOR ERROR
TDPRPA - UNCLEARED PRIOR ERROR
TDPRPI - UNCLEARED PRIOR ERROR
TDPRPT - UNCLEARED PRIOR ERROR
TDSETI - UNCLEARED PRIOR ERROR
TDSETR - UNCLEARED PRIOR ERROR
TDSETR - UNRECOGNIZED PARAMETER NAME

See Also

Online: tdclrs, tddtri, tdgeti, tdgetr, tdgrds, tdgrid, tdgtrs, tdinit, tditri, tdlbla, tdlbls, tdline, tdlnpa, tdmtri, tdotri, tdpack_params, tdpara, tdplch, tdprpa, tdprpi, tdprpt, tdseti, tdsetr, tdsort, tdstri, tdstrs

Info

July 1997 UNIX NCAR GRAPHICS