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root/radiance/ray/src/hd/rhdobj.h
Revision: 3.6
Committed: Sat Feb 22 02:07:24 2003 UTC (21 years, 7 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R5
Changes since 3.5: +1 -4 lines
Log Message:
Changes and check-in for 3.5 release
Includes new source files and modifications not recorded for many years
See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release

File Contents

# Content
1 /* RCSid: $Id$ */
2 /*
3 * Header file for object display routines for rholo drivers.
4 */
5
6 /* additional user commands */
7 #define DO_LOAD 0 /* load octree object */
8 #define DO_UNLOAD 1 /* unload (free) octree object */
9 #define DO_XFORM 2 /* set/print object transform */
10 #define DO_MOVE 3 /* add to object transform */
11 #define DO_UNMOVE 4 /* undo last transform change */
12 #define DO_DUP 5 /* duplicate object */
13 #define DO_SHOW 6 /* show object (low quality) */
14 #define DO_LIGHT 7 /* illuminate object (high quality) */
15 #define DO_HIDE 8 /* hide object */
16 #define DO_OBJECT 9 /* print object statistics */
17
18 #define DO_NCMDS 10 /* number of object display commands */
19
20 /* commands entered on stdin only */
21 #define DO_INIT {"load","clear","xform","move","unmove","dup",\
22 "show","light","hide","object"}
23
24 /*******************************************************************
25 * The following routines are available for calling from the driver:
26
27 int
28 (*dobj_lightsamp)(c, p, v) : apply next sample for local light sources
29 COLR c; : pixel color (RGBE)
30 FVECT p; : world intersection point
31 FVECT v; : ray direction vector
32
33 If the pointer to the function dobj_lightsamp is non-NULL, then the
34 dev_value() driver routine should call this rather than use a
35 given sample in its own data structures. This pointer is set
36 in the dobj_lighting() function described below, which may be
37 called indirectly by the dobj_command() function.
38
39
40 int
41 dobj_command(cmd, args) : check/run object display command
42 char *cmd, *args; : command name and argument string
43
44 Check to see if this is an object display command, and return -1 if
45 it isn't. If it is a valid command that results in some visible
46 change, return non-zero, otherwise return 0. Error messages should
47 be printed with error(COMMAND,err).
48
49
50 double
51 dobj_trace(nm, rorg, rdir) : check for ray intersection with objects
52 char nm[]; : object name (modified)
53 FVECT rorg, rdir; : ray origin and direction
54
55 Check to see if the given ray intersects the given object,
56 returning the distance the ray traveled if it did, or FHUGE if it didn't.
57 If nm contains "*", then all visible objects are checked and the name
58 of the intersected object is returned, or "" if none. If nm is NULL,
59 then all visible objects are checked, but the name is not returned.
60
61
62 int
63 dobj_render() : render visible objects to OpenGL
64
65 Renders all display objects using OpenGL, assuming desired view has
66 been set. This routine also assumes that the tone-mapping library
67 is being used to set exposure, and it queries this information to
68 adjust light sources as necessary for illuminated objects. Returns
69 the number of objects rendered.
70
71
72 void
73 dobj_cleanup() : clean up data structures
74
75 Frees all allocated data structures and objects.
76
77
78 ++++ The following routines are usually called through dobj_command() ++++
79
80
81 int
82 dobj_load(oct, nam) : create/load an octree object
83 char *oct, *nam; : octree and object name
84
85 Load an octree for rendering as a local object, giving it the indicated name.
86 Returns 1 on success, 0 on failure (with COMMAND error message).
87
88
89 int
90 dobj_unload(nam) : free the named object
91 char *nam; : object name
92
93 Free all memory associated with the named object.
94 Returns 1 on success, 0 on failure (with COMMAND error message).
95
96
97 int
98 dobj_xform(nam, add, ac, av) : set/add transform for nam
99 char *nam; : object name
100 int add; : add to transform or create new one?
101 int ac; : transform argument count
102 char *av[]; : transform arguments
103
104 Set or add to the transform for the named object.
105 Returns 1 on success, 0 on failure (with COMMAND error message).
106
107
108 int
109 dobj_unmove() : undo last transform change
110
111 Undo the last transform change.
112 Returns 1 on success, 0 on failure (with COMMAND error message).
113
114
115 int
116 dobj_dup(oldnm, nam) : duplicate object oldnm as nam
117 char *oldnm, *nam;
118
119 Duplicate the named object and give the copy a new name.
120 Returns 1 on success, 0 on failure (with COMMAND error message).
121
122
123 int
124 dobj_lighting(nam, cn) : set up lighting for display object
125 char *nam; : object name
126 int cn; : new drawing code
127
128 Set the lighting of the named object to DO_SHOW, DO_HIDE or DO_LIGHT.
129 Change lighting of all objects if nam is "*".
130 Returns 1 on success, 0 on failure (with COMMAND error message).
131
132
133 int
134 dobj_putstats(nam, fp) : print object statistics
135 char *nam; : object name
136 FILE *fp; : output file
137
138 Print current position, size and transform for the named object,
139 or all objects if nam is "*".
140 Returns 1 on success, 0 on failure (with COMMAND error message).
141
142
143 ******************************************************************/
144
145
146 extern double dobj_trace();
147
148 extern char rhdcmd[DO_NCMDS][8];
149
150 extern int (*dobj_lightsamp)(); /* pointer to function to get lights */