home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Amiga Tools 5
/
Amiga Tools 5.iso
/
grafik
/
3d & render tools
/
irit
/
man
/
man6
/
tderive.6
< prev
next >
Wrap
Text File
|
1996-07-16
|
1KB
|
31 lines
.TH TDERIVE
6 "IRIT Version 6.0"
.SH NAME
TDERIVE
TrivarType TDERIVE( TrivarType TV, NumericType Dir )
Returns a vector field trivariate representing the differentiated
trivariate in the given direction (ROW, COL, or DEPTH). Evaluation of the
returned trivariate at a given parameter value will return a vector
representing the partial derivative of TV in Dir at that
parameter value.
TV = tbezier( list( list( list( ctlpt( E1, 0.1 ),
ctlpt( E1, 0.2 ) ),
list( ctlpt( E1, 0.3 ),
ctlpt( E1, 0.4 ) ) ),
list( list( ctlpt( E1, 2.4 ),
ctlpt( E1, 2.2 ) ),
list( ctlpt( E1, 2.3 ),
ctlpt( E1, 2.1 ) ) ) ) );
DuTV = TDERIVE( TV, ROW );
DvTV = TDERIVE( TV, COL );
DwTV = TDERIVE( TV, DEPTH );
computes the gradiate of a scalar trivariate field, by computing its
partials with respect to u, v, and w.