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/* Copyright (c) 1997 Regents of the University of California */ |
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/* SCCSid "$SunId$ LBL" */ |
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/* |
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* Header file for OpenGL display process. |
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*/ |
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#ifndef MEM_PTR |
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#define MEM_PTR char * |
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#endif |
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#ifndef int4 |
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#define int4 int /* assume 32-bit integers */ |
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#endif |
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/* request types */ |
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#define GD_R_ViewSync 0 /* synchronize current view */ |
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#define GD_R_SetView 1 /* set new view parameters */ |
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#define GD_R_AddBg 2 /* add background rectangle */ |
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#define GD_R_DelBg 3 /* delete background rectangle */ |
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#define GD_R_Error 4 /* error to report */ |
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#define GD_R_Init 5 /* initialize connection */ |
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#define GD_NREQ 6 /* number of requests */ |
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/* error codes */ |
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#define GD_OK 0 /* normal return value */ |
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#define GD_E_UNRECOG 1 /* unrecognized request */ |
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#define GD_E_ARGMISS 2 /* missing argument(s) */ |
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#define GD_E_NOMEMOR 3 /* out of memory */ |
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#define GD_E_CONNECT 4 /* can't establish connection */ |
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#define GD_NERRS 5 /* number of errors */ |
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extern char *gdErrMsg[GD_NERRS]; /* our error message list */ |
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/* request structure */ |
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#define GD_ARG0 4 /* minimum argument length */ |
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typedef struct { |
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short type; /* request type */ |
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unsigned int4 id; /* unique identifier */ |
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unsigned int4 alen; /* argument buffer length */ |
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unsigned char args[GD_ARG0]; /* followed by the actual arguments */ |
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} GDrequest; /* a GL display request */ |
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typedef struct { |
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int cno; /* connection number */ |
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int xres, yres; /* display window size (renderable area) */ |
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int fdout; /* send descriptor */ |
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FILE *fpin; /* receive stream */ |
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} GDconnect; /* display server/client connection */ |
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/* argument lengths */ |
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#define GD_L_REAL 5 /* reals are 5 bytes */ |
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#define gdStrLen(s) (strlen(s)+1) /* strings are nul-terminated */ |
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#define gdFree(p) free((MEM_PTR)(p)) |
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extern GDrequest *gdRecvRequest(); |
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extern GDconnect *gdOpen(); |
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extern int4 gdGetInt(); |
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extern double gdGetReal(); |
