man/man1/genrev.1

.\" RCSid "$Id: genrev.1,v 1.6 2017/04/10 14:48:08 greg Exp $"
.TH GENREV 1 11/15/93 RADIANCE
.SH NAME
genrev - generate a RADIANCE description of surface of revolution
.SH SYNOPSIS
.B "genrev mat name 'z(t)' 'r(t)' nseg"
[
.B "\-e expr"
][
.B "\-f file"
][
.B \-s
]
.SH DESCRIPTION
.I Genrev
produces a RADIANCE scene description of a
surface of revolution.
The object will be composed of
.I nseg
cones, cups, cylinders, tubes or rings
following the parametric curve defined by
.I z(t)
(height)
and
.I r(t)
(radius).
When
.I z
is increasing with t, the surface normal points outward.
When
.I z
is decreasing, the normal points inward.
The variable
.I t
used in the function expressions varies
from 0 to 1 in even steps of
.I 1/nseg.
The expressions are of the same type used in RADIANCE
function files.
Auxiliary expressions and/or files may be specified
in any number of
.I \-e
and
.I \-f
options.
The variable and function definitions in each
.I \-f source
file are read and compiled from the RADIANCE library where it is found.
The
.I \-s
option smooths the surfaces using Phong normal interpolation.
.SH EXAMPLE
To generate a torus with an inner radius of 1 and an outer radius
of 3:
.IP "" .2i
genrev steel torus 'sin(2*PI*t)' '2+cos(2*PI*t)' 32
.SH ENVIRONMENT
RAYPATH         the directories to check for auxiliary files.
.SH AUTHOR
Greg Ward
.SH "SEE ALSO"
genbox(1), gencat(1), genprism(1), gensurf(1),
genworm(1), rcalc(1), rpict(1), rvu(1), xform(1)
Revision:	1.7
Committed:	Fri May 4 23:56:49 2018 UTC (7 years ago) by greg
Branch:	MAIN
CVS Tags:	rad5R4, rad5R2, rad5R3, HEAD
Changes since 1.6:	+6 -1 lines
Log Message:	Added search to -f for genrev, gensurf, genworm, bsdf2klems, bsdf2ttree, & pcomb
#	User	Rev	Content
1	greg	1.7	.\" RCSid "$Id: genrev.1,v 1.6 2017/04/10 14:48:08 greg Exp $"
2	greg	1.1	.TH GENREV 1 11/15/93 RADIANCE
3			.SH NAME
4			genrev - generate a RADIANCE description of surface of revolution
5			.SH SYNOPSIS
6			.B "genrev mat name 'z(t)' 'r(t)' nseg"
7			[
8			.B "\-e expr"
9			][
10			.B "\-f file"
11			][
12			.B \-s
13			]
14			.SH DESCRIPTION
15			.I Genrev
16			produces a RADIANCE scene description of a
17			surface of revolution.
18			The object will be composed of
19			.I nseg
20			cones, cups, cylinders, tubes or rings
21			following the parametric curve defined by
22			.I z(t)
23			(height)
24			and
25			.I r(t)
26			(radius).
27			When
28			.I z
29			is increasing with t, the surface normal points outward.
30			When
31			.I z
32			is decreasing, the normal points inward.
33			The variable
34			.I t
35			used in the function expressions varies
36			from 0 to 1 in even steps of
37			.I 1/nseg.
38			The expressions are of the same type used in RADIANCE
39			function files.
40			Auxiliary expressions and/or files may be specified
41			in any number of
42			.I \-e
43			and
44			.I \-f
45			options.
46	greg	1.7	The variable and function definitions in each
47			.I \-f source
48			file are read and compiled from the RADIANCE library where it is found.
49	greg	1.1	The
50			.I \-s
51			option smooths the surfaces using Phong normal interpolation.
52			.SH EXAMPLE
53			To generate a torus with an inner radius of 1 and an outer radius
54			of 3:
55			.IP "" .2i
56	greg	1.4	genrev steel torus 'sin(2PIt)' '2+cos(2PIt)' 32
57	greg	1.7	.SH ENVIRONMENT
58			RAYPATH the directories to check for auxiliary files.
59	greg	1.1	.SH AUTHOR
60			Greg Ward
61			.SH "SEE ALSO"
62	greg	1.6	genbox(1), gencat(1), genprism(1), gensurf(1),
63			genworm(1), rcalc(1), rpict(1), rvu(1), xform(1)