222 lines
7.1 KiB
C
222 lines
7.1 KiB
C
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/************************************************************************
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* CGMCMN.H *
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* *
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* The file defines global parameters and structures associated with *
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* the metafile. *
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* *
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* This file also defines the codes used in the CGM (Computer Graphics *
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* Metafile) which identify the drawable items and their attributes, *
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* and the file and frame boundaries. *
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* *
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* The format of the metafile is described below: *
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* *
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* FILE HEADER: 80 bytes *
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* Title 32 bytes *
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* Max. frame 2 bytes *
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* Version 2 bytes *
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* Machine type 2 bytes *
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* Reserved 42 bytes *
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* *
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* FRAME HEADER #1: 72 bytes \ *
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* Label title 64 bytes \ *
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* Start position 4 bytes \ *
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* End position 4 bytes \ *
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* Total = 72 x N *
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* ... / *
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* ... / *
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* / *
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* FRAME HEADER #N: 72 bytes / *
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* ... *
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* *
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* BEG_MF -- Beginning of metafile *
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* BEG_PIC \ *
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* BEG_PICBODY \ *
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* ... Frame #1 *
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* ... / *
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* END_PIC / *
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* *
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* ... *
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* *
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* BEG_PIC \ *
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* BEG_PICBODY \ *
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* ... Frame #N *
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* ... / *
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* END_PIC / *
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* END_MF -- End of metafile *
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* *
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** *
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* Log: *
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* A. Chang/EAI 3/94 *
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* S. Jacobs/NMC 6/94 General clean up *
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* R. Tian/SAIC 4/02 Added fxsize and fysize *
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***********************************************************************/
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/* Global parameters and structures */
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#define NC_TITLE "NTRANS METAFILE VERSION1.0"
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/* Metafile title */
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#define MAX_TWOBT 0x7fff
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/* Maximum 2-byte positive number */
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#define MAX_NFRM 500
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/* Maximum number of frames */
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#define MAX_BUFSZ 8192
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/* Maximum buffer size for output*/
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#define NUM_BTSZ 2
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/* Byte size of the output values */
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#define FIL_HDRSZ 80
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/* File header size in bytes */
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#define FIL_TTLSZ 32
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/* File title size in bytes */
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#define FIL_RESSZ ( FIL_HDRSZ - FIL_TTLSZ - ( 5 * NUM_BTSZ ) )
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/* Reserved file header space size
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in bytes */
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#define FRM_HDRSZ 72
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/* Frame header size in bytes */
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#define FRM_LBLSZ 64
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/* Frame label size in bytes */
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#define MAX_FNLEN 81
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/* Maximum file name length */
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#define XY_SCALE 0x7fff
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/* Maximum x,y values */
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#define COLR_SCALE 0x00ff
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/* Maximum RGB color values */
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#ifndef HEADER_DEFINED
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#define HEADER_DEFINED
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struct nc_filhdr {
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char title[FIL_TTLSZ];
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/* File title */
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unsigned short maxframe;
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/* Maximum number of frames */
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unsigned short version;
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/* Version number */
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unsigned short machtype;
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/* Machine type */
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unsigned short fxsize;
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/* Frame size in X direction */
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unsigned short fysize;
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/* Frame size in Y direction */
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char reserved[FIL_RESSZ];
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/* Reserved space */
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};
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typedef struct nc_filhdr nc_file_header;
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struct nc_frmhdr {
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char label[FRM_LBLSZ];
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/* Frame label */
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unsigned isbyte;
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/* Frame start byte */
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unsigned iebyte;
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/* Frame end byte */
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};
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typedef struct nc_frmhdr nc_frame_header;
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#endif /* HEADER_DEFINED */
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/*---------------------------------------------------------------------*/
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/* CGM codes */
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#define NOOP (short) 0x0000 /* length always 0 */
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#define BEG_MF (short) 0x0020 /* length always 0 */
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#define END_MF (short) 0x0040 /* length always 0 */
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#define BEG_PIC (short) 0x0060 /* length always 0 */
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#define BEG_PICBODY (short) 0x0080 /* length always 0 */
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#define END_PIC (short) 0x00a0 /* length always 0 */
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#define VDC_TYPE (short) 0x1060
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#define INT_PREC (short) 0x1080
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#define REAL_PREC (short) 0x10a0
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#define INX_PREC (short) 0x10c0
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#define COL_PREC (short) 0x10e0
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#define COL_INX_PREC (short) 0x1100
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#define MAX_COL_INDX (short) 0x1120
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#define COL_VAL_EXT (short) 0x1140
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#define ELEMT_LIST (short) 0x1160
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#define BEG_DEFAULTS (short) 0x1180
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#define FONT_LIST (short) 0x11a0
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#define CHARSET_LIST (short) 0x11c0
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#define CHAR_CODE (short) 0x11e0
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#define SCALE_MODE (short) 0x2020
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#define COL_MODE (short) 0x2040
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#define LN_WIDTH_MODE (short) 0x2060
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#define MK_SIZE_MODE (short) 0x2080
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#define EDG_WIDTH_MODE (short) 0x20a0
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#define VDC_EXT (short) 0x20c0
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#define BG_COLR (short) 0x20e0
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#define VDC_INT_PREC (short) 0x3020
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#define VDC_REAL_PREC (short) 0x3040
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#define AUX_COLOR (short) 0x3060
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#define TRANSPARENCY (short) 0x3080
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#define CLIP_RECT (short) 0x30a0 /* length always 8 */
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#define CGM_CLIP (short) 0x30c0 /* length always 2 */
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#define LINE (short) 0x4020 /* long form possible */
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#define DISJT_LINE (short) 0x4040
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#define MARKER (short) 0x4060 /* long form possible */
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#define TEXT (short) 0x4080 /* long form possible */
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#define RESTR_TEXT (short) 0x40a0
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#define APPEND_TEXT (short) 0x40c0
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#define POLYGON (short) 0x40e0 /* long form possible */
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#define POLYGON_SET (short) 0x4100
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#define CELL_ARRAY (short) 0x4120
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#define GDP (short) 0x4140
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#define RECT (short) 0x4160
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#define CIRCLE (short) 0x4180
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#define ARC_3PT (short) 0x41a0
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#define ARC_3PT_CLS (short) 0x41c0
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#define ARC_CENTR (short) 0x41e0
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#define ARC_CTR_CLS (short) 0x4200
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#define ELLIPSE (short) 0x4220
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#define ELLIP_ARC (short) 0x4240
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#define ELLIP_ARC_CLS (short) 0x4260
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#define LINE_INDX (short) 0x5020
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#define LINE_TYPE (short) 0x5040 /* length always 2 */
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#define LINE_WIDTH (short) 0x5060
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#define LINE_COLOR (short) 0x5080 /* length always 2 */
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#define MARK_INDX (short) 0x50a0
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#define MARK_TYPE (short) 0x50c0 /* length always 2 */
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#define MARK_SIZE (short) 0x50e0
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#define MARK_COLOR (short) 0x5100 /* length always 2 */
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#define TEXT_INDX (short) 0x5120
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#define TEXT_FONT_INX (short) 0x5140
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#define TEXT_PREC (short) 0x5160
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#define CHAR_EXP (short) 0x5180
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#define CHAR_SPACE (short) 0x51a0
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#define TEXT_COLOR (short) 0x51c0 /* length always 2 */
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#define CHAR_HEIGHT (short) 0x51e0 /* length always 2 */
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#define CHAR_ORIENT (short) 0x5200
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#define TEXT_PATH (short) 0x5220
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#define TEXT_ALIGN (short) 0x5240 /* length always 12 */
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#define CHARSET_INDX (short) 0x5260
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#define ALT_CHRSET_INX (short) 0x5280
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#define FILL_INDX (short) 0x52a0
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#define FILL_STYLE (short) 0x52c0 /* length always 2 */
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#define FILL_COLR (short) 0x52e0 /* length always 2 */
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#define HATCH_INX (short) 0x5300
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#define PATTN_INX (short) 0x5320
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#define EDGE_INX (short) 0x5340
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#define EDGE_TYPE (short) 0x5360
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#define EDGE_WIDTH (short) 0x5380
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#define EDGE_COLOR (short) 0x53a0
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#define FILL_REF_PT (short) 0x53e0
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#define PATTN_TABLE (short) 0x5400
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#define PATTN_SIZE (short) 0x5420
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#define COLOR_TAB (short) 0x5440 /* length always 5 */
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#define ASF (short) 0x5460
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#define ESCAPE (short) 0x6020
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#define MESSAGE (short) 0x7020
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#define LONG_FORM (short) 0x001f
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#define CLASS_MASK (short) 0xf000
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#define CLASS_SHIFT 12
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