src/hd/rhdobj.h

/* RCSid: $Id$ */
/*
 * Header file for object display routines for rholo drivers.
 */

                                /* additional user commands */
#define DO_LOAD         0               /* load octree object */
#define DO_UNLOAD       1               /* unload (free) octree object */
#define DO_XFORM        2               /* set/print object transform */
#define DO_MOVE         3               /* add to object transform */
#define DO_UNMOVE       4               /* undo last transform change */
#define DO_DUP          5               /* duplicate object */
#define DO_SHOW         6               /* show object (low quality) */
#define DO_LIGHT        7               /* illuminate object (high quality) */
#define DO_HIDE         8               /* hide object */
#define DO_OBJECT       9               /* print object statistics */

#define DO_NCMDS        10              /* number of object display commands */

                                        /* commands entered on stdin only */
#define DO_INIT         {"load","clear","xform","move","unmove","dup",\
                                "show","light","hide","object"}

/*******************************************************************
 * The following routines are available for calling from the driver:

int
(*dobj_lightsamp)(c, p, v)      : apply next sample for local light sources
COLR    c;                      : pixel color (RGBE)
FVECT   p;                      : world intersection point
FVECT   v;                      : ray direction vector

If the pointer to the function dobj_lightsamp is non-NULL, then the
dev_value() driver routine should call this rather than use a
given sample in its own data structures.  This pointer is set
in the dobj_lighting() function described below, which may be
called indirectly by the dobj_command() function.


int
dobj_command(cmd, args)         : check/run object display command
char    *cmd, *args;            : command name and argument string

Check to see if this is an object display command, and return -1 if
it isn't.  If it is a valid command that results in some visible
change, return non-zero, otherwise return 0.  Error messages should
be printed with error(COMMAND,err).


double
dobj_trace(nm, rorg, rdir)      : check for ray intersection with objects
char    nm[];                   : object name (modified)
FVECT   rorg, rdir;             : ray origin and direction

Check to see if the given ray intersects the given object,
returning the distance the ray traveled if it did, or FHUGE if it didn't.
If nm contains "*", then all visible objects are checked and the name
of the intersected object is returned, or "" if none.  If nm is NULL,
then all visible objects are checked, but the name is not returned.


int
dobj_render()                   : render visible objects to OpenGL

Renders all display objects using OpenGL, assuming desired view has
been set.  This routine also assumes that the tone-mapping library
is being used to set exposure, and it queries this information to
adjust light sources as necessary for illuminated objects.  Returns
the number of objects rendered.


void
dobj_cleanup()                  : clean up data structures

Frees all allocated data structures and objects.


++++ The following routines are usually called through dobj_command() ++++


int
dobj_load(oct, nam)             : create/load an octree object
char    *oct, *nam;             : octree and object name

Load an octree for rendering as a local object, giving it the indicated name.
Returns 1 on success, 0 on failure (with COMMAND error message).


int
dobj_unload(nam)                : free the named object
char    *nam;                   : object name

Free all memory associated with the named object.
Returns 1 on success, 0 on failure (with COMMAND error message).


int
dobj_xform(nam, add, ac, av)    : set/add transform for nam
char    *nam;                   : object name
int     add;                    : add to transform or create new one?
int     ac;                     : transform argument count
char    *av[];                  : transform arguments

Set or add to the transform for the named object.
Returns 1 on success, 0 on failure (with COMMAND error message).


int
dobj_unmove()                   : undo last transform change

Undo the last transform change.
Returns 1 on success, 0 on failure (with COMMAND error message).


int
dobj_dup(oldnm, nam)            : duplicate object oldnm as nam
char    *oldnm, *nam;

Duplicate the named object and give the copy a new name.
Returns 1 on success, 0 on failure (with COMMAND error message).


int
dobj_lighting(nam, cn)          : set up lighting for display object
char    *nam;                   : object name
int     cn;                     : new drawing code

Set the lighting of the named object to DO_SHOW, DO_HIDE or DO_LIGHT.
Change lighting of all objects if nam is "*".
Returns 1 on success, 0 on failure (with COMMAND error message).


int
dobj_putstats(nam, fp)          : print object statistics
char    *nam;                   : object name
FILE    *fp;                    : output file

Print current position, size and transform for the named object,
or all objects if nam is "*".
Returns 1 on success, 0 on failure (with COMMAND error message).


 ******************************************************************/


extern double   dobj_trace();

extern char     rhdcmd[DO_NCMDS][8];

extern int      (*dobj_lightsamp)();    /* pointer to function to get lights */
Revision:	3.6
Committed:	Sat Feb 22 02:07:24 2003 UTC (22 years, 8 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
#	User	Rev	Content
1	greg	3.6	/* RCSid: $Id$ */
2	gwlarson	3.1	/*
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	gwlarson	3.3	#define DO_INIT {"load","clear","xform","move","unmove","dup",\
22	gwlarson	3.1	"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	gwlarson	3.5	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	gwlarson	3.1	be printed with error(COMMAND,err).
48
49
50			double
51	gwlarson	3.2	dobj_trace(nm, rorg, rdir) : check for ray intersection with objects
52			char nm[]; : object name (modified)
53	gwlarson	3.1	FVECT rorg, rdir; : ray origin and direction
54
55	gwlarson	3.2	Check to see if the given ray intersects the given object,
56	gwlarson	3.1	returning the distance the ray traveled if it did, or FHUGE if it didn't.
57	gwlarson	3.2	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	gwlarson	3.1
61
62	gwlarson	3.4	int
63	gwlarson	3.1	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	gwlarson	3.4	adjust light sources as necessary for illuminated objects. Returns
69			the number of objects rendered.
70	gwlarson	3.1
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 */