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
To use Tdpack, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.
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
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
Copyright (C) 1987-2009
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.