man/man1/replmarks.1

.\" RCSid "$Id"
.TH REPLMARKS 1 3/24/94 RADIANCE
.SH NAME
replmarks - replace triangular markers in a RADIANCE scene description
.SH SYNOPSIS
.B replmarks
[
.B \-e
][
.B "\-m newmod"
][
.B "\-s scale"
]
{
.B "\-x objfile"
|
.B "\-i octree"
}
.B "modname .."
[
.B "file .."
]
.SH DESCRIPTION
.I Replmarks
replaces triangular markers identified by the modifier
.I modname
in each scene description
.I file
and writes the result to the standard output.
The
.I \-x
option indicates that each marker should be replaced by an appropriate
.I xform(1)
command on
.I objfile.
The
.I \-i
option indicates that each marker should be replaced by an instance of
.I octree.
One of these two options must appear on the command line, along with
.I modname,
the modifier used by markers in the file.
.PP
Multiple modifiers may be given, as long as each one is preceded
by its own
.I \-x
or
.I \-i
option.
.PP
The transformation for each marker is determined by its location
and orientation.
A marker should be a right triangle pointing like a half-arrow in
the direction of the transformed x-axis, x'.
The longest side is the hypoteneuse, the second longest side is
the x'-axis, and the third longest side indicates the direction of
the y'-axis.
Any additional sides will be ignored (ie. a quadrilateral may be
used instead of a triangle if the extra side is small).
The z'-axis is determined by the cross product of the x' and y'
axes, and the origin is the common vertex between x' and y'.
.PP
The size of the marker is ignored unless the
.I \-s
option is used, where
.I scale
is a multiplier for the x'-axis length to indicate the total scale
factor.
For example, a
.I scale
value of 5 with a marker length of .5 would result in a total
scale factor of 2.5 to be used in the transformation.
.PP
The
.I \-e
option causes commands in the file to be expanded, and
is required to replace markers from commands in the input file.
Even with this option,
.I replmarks
will not examine objects for markers.
Specifically, an object included by
.I replmarks
as a result of a
.I \-x
expansion will be transferred verbatim, without regard
to any surfaces therein that might have been considered
as marks if they were on the main input.
.PP
The
.I \-m
option causes all replaced objects to be given the modifier
.I newmod.
Otherwise, the new object surfaces will use their originally defined
modifiers.
A different replacement modifier may be given for each marker type.
The marker modifier name itself is only used to identify markers,
and will not appear in the output in any form.
.PP
If no input
.I file
is given, the standard input is read.
.SH EXAMPLE
To replace all polygons with the modifier ``knobs'' in the file input
with a transformed ``knob.rad'' and write the result to output:
.IP "" .2i
replmarks -x knob.rad knobs input > output
.PP
To use instances of ``tree.oct'' with scaling set to three times the
tree marker length:
.IP "" .2i
replmarks -s 3 -i tree.oct tree input > output
.SH AUTHOR
Greg Ward
.SH "SEE ALSO"
arch2rad(1), ies2rad(1), xform(1)
Revision:	1.1
Committed:	Tue Mar 11 19:20:21 2003 UTC (21 years, 2 months ago) by greg
Branch:	MAIN
CVS Tags:	rad3R5
Log Message:	Added documentation to repository
#	Content
1	.\" RCSid "$Id"
2	.TH REPLMARKS 1 3/24/94 RADIANCE
3	.SH NAME
4	replmarks - replace triangular markers in a RADIANCE scene description
5	.SH SYNOPSIS
6	.B replmarks
7	[
8	.B \-e
9	][
10	.B "\-m newmod"
11	][
12	.B "\-s scale"
13	]
14	{
15	.B "\-x objfile"
16	\|
17	.B "\-i octree"
18	}
19	.B "modname .."
20	[
21	.B "file .."
22	]
23	.SH DESCRIPTION
24	.I Replmarks
25	replaces triangular markers identified by the modifier
26	.I modname
27	in each scene description
28	.I file
29	and writes the result to the standard output.
30	The
31	.I \-x
32	option indicates that each marker should be replaced by an appropriate
33	.I xform(1)
34	command on
35	.I objfile.
36	The
37	.I \-i
38	option indicates that each marker should be replaced by an instance of
39	.I octree.
40	One of these two options must appear on the command line, along with
41	.I modname,
42	the modifier used by markers in the file.
43	.PP
44	Multiple modifiers may be given, as long as each one is preceded
45	by its own
46	.I \-x
47	or
48	.I \-i
49	option.
50	.PP
51	The transformation for each marker is determined by its location
52	and orientation.
53	A marker should be a right triangle pointing like a half-arrow in
54	the direction of the transformed x-axis, x'.
55	The longest side is the hypoteneuse, the second longest side is
56	the x'-axis, and the third longest side indicates the direction of
57	the y'-axis.
58	Any additional sides will be ignored (ie. a quadrilateral may be
59	used instead of a triangle if the extra side is small).
60	The z'-axis is determined by the cross product of the x' and y'
61	axes, and the origin is the common vertex between x' and y'.
62	.PP
63	The size of the marker is ignored unless the
64	.I \-s
65	option is used, where
66	.I scale
67	is a multiplier for the x'-axis length to indicate the total scale
68	factor.
69	For example, a
70	.I scale
71	value of 5 with a marker length of .5 would result in a total
72	scale factor of 2.5 to be used in the transformation.
73	.PP
74	The
75	.I \-e
76	option causes commands in the file to be expanded, and
77	is required to replace markers from commands in the input file.
78	Even with this option,
79	.I replmarks
80	will not examine objects for markers.
81	Specifically, an object included by
82	.I replmarks
83	as a result of a
84	.I \-x
85	expansion will be transferred verbatim, without regard
86	to any surfaces therein that might have been considered
87	as marks if they were on the main input.
88	.PP
89	The
90	.I \-m
91	option causes all replaced objects to be given the modifier
92	.I newmod.
93	Otherwise, the new object surfaces will use their originally defined
94	modifiers.
95	A different replacement modifier may be given for each marker type.
96	The marker modifier name itself is only used to identify markers,
97	and will not appear in the output in any form.
98	.PP
99	If no input
100	.I file
101	is given, the standard input is read.
102	.SH EXAMPLE
103	To replace all polygons with the modifier ``knobs'' in the file input
104	with a transformed ``knob.rad'' and write the result to output:
105	.IP "" .2i
106	replmarks -x knob.rad knobs input > output
107	.PP
108	To use instances of ``tree.oct'' with scaling set to three times the
109	tree marker length:
110	.IP "" .2i
111	replmarks -s 3 -i tree.oct tree input > output
112	.SH AUTHOR
113	Greg Ward
114	.SH "SEE ALSO"
115	arch2rad(1), ies2rad(1), xform(1)