Return to draw.c CVS log

Up to [CSRG BSD Unix] / 43BSD / contrib / X / libvs100

Annotation of 43BSD/contrib/X/libvs100/draw.c, revision 1.1.1.1

1.1       root        1: /* $Header: draw.c,v 10.3 86/02/01 15:46:46 tony Rel $ */
                      2: /* draw.c      Draw lines, curves, and polygons on the screen
                      3:  *
                      4:  *     DrawCurve       Draw a generalized line/polygon/combination
                      5:  *
                      6:  */
                      7: 
                      8: /****************************************************************************
                      9:  *                                                                         *
                     10:  *  Copyright (c) 1983, 1984 by                                                    *
                     11:  *  DIGITAL EQUIPMENT CORPORATION, Maynard, Massachusetts.                 *
                     12:  *  All rights reserved.                                                   *
                     13:  *                                                                         *
                     14:  *  This software is furnished on an as-is basis and may be used and copied *
                     15:  *  only with inclusion of the above copyright notice. This software or any *
                     16:  *  other copies thereof may be provided or otherwise made available to     *
                     17:  *  others only for non-commercial purposes.  No title to or ownership of   *
                     18:  *  the software is hereby transferred.                                            *
                     19:  *                                                                         *
                     20:  *  The information in this software is  subject to change without notice   *
                     21:  *  and  should  not  be  construed as  a commitment by DIGITAL EQUIPMENT   *
                     22:  *  CORPORATION.                                                           *
                     23:  *                                                                         *
                     24:  *  DIGITAL assumes no responsibility for the use  or  reliability of its   *
                     25:  *  software on equipment which is not supplied by DIGITAL.                *
                     26:  *                                                                         *
                     27:  *                                                                         *
                     28:  ****************************************************************************/
                     29: 
                     30: #include "vs100.h"
                     31: 
                     32: extern BitMap screen;
                     33: extern int VSReloc;
                     34: extern char SSMap[];
                     35: 
                     36: char *AllocateCopy(), *AllocateSpace();
                     37: 
                     38: DrawCurve (verts, vertcount, xbase, ybase, srcpix, altpix, mode,
                     39:           bwidth, bheight, pat, patlen, patmul, clips, clipcount, func, zmask)
                     40:        Vertex *verts;
                     41:        int vertcount, xbase, ybase, srcpix, altpix, mode, bwidth, bheight;
                     42:        int pat, patlen, patmul, clipcount, zmask;
                     43:        register int func;
                     44:        CLIP *clips;
                     45: {
                     46:        register DrawCurvePacket *dcp;
                     47: #define        h ((PacketHeader *) dcp->dcp_head)
                     48: #define        size ((Extent *) dcp->dcp_maskSize)
                     49: #define        destOff ((Point *) dcp->dcp_destOffset)
                     50: #define        path ((SegmentList *) dcp->dcp_path)
                     51: #define        clip ((RectangleList *) dcp->dcp_clipping.rectList)
                     52: #define pstr ((PatternString *) dcp->dcp_pattern)
                     53: #define pstate ((PatternState *) dcp->dcp_patState.literal)
                     54: 
                     55:        if (!(zmask & 1)) {
                     56:            DeallocateSpace ();
                     57:            return;
                     58:        }
                     59:        if ((verts = (Vertex *) AllocateCopy ((caddr_t) verts, vertcount * sizeof (Vertex))) == NULL ||
                     60:            (dcp = (DrawCurvePacket *) AllocateSpace (sizeof (DrawCurvePacket))) == NULL)
                     61:            return;
                     62: 
                     63:        func = SSMap[func];
                     64:        h->ph_drawMod.m_source = 0;     /* Always constant here */
                     65:        h->ph_drawMod.m_mask = 0;
                     66:        h->ph_drawMod.m_map = MAPTYPE(func);
                     67:        if (mode == 0) {
                     68:            h->ph_drawMod.m_drawMode = 0;
                     69:            h->ph_drawMod.m_patMode = 0;
                     70:        } else {
                     71:            h->ph_drawMod.m_drawMode = 1;
                     72:            h->ph_drawMod.m_patMode = mode - 1;
                     73:        }
                     74:        h->ph_drawMod.m_patState = 0;
                     75:        h->ph_opcode = DRAW_CURVE;
                     76:        *(long *) h->ph_next = NULL;
                     77: 
                     78:        dcp->dcp_source.const = srcpix & 1;
                     79:        dcp->dcp_secondSource.const = altpix & 1;
                     80: 
                     81:        size->e_height = bheight;
                     82:        size->e_width = bwidth;
                     83: 
                     84:        *(BitMap *) dcp->dcp_destImage = screen;
                     85:        destOff->p_x = xbase;
                     86:        destOff->p_y = ybase;
                     87: 
                     88:        *(short *) dcp->dcp_map.literal = MAPLIT(func);
                     89: 
                     90:        pstr->p_pattern = pat;
                     91:        pstr->p_length = patlen;
                     92:        pstr->p_multiplier = patmul;
                     93:        pstate->p_position = 0;
                     94:        pstate->p_count = 0;
                     95: 
                     96:        if (clipcount == 1) {
                     97:            h->ph_drawMod.m_clipping = 1;
                     98:            *(CLIP *) dcp->dcp_clipping.litRect = *clips;
                     99:        } else {
                    100:            h->ph_drawMod.m_clipping = 2;
                    101:            *(caddr_t *) clip->r_first = (caddr_t) clips + VSReloc;
                    102:            clip->r_count = clipcount;
                    103:        }
                    104: 
                    105:        *(caddr_t *) path->seg_first = (caddr_t) verts + VSReloc;
                    106:        path->seg_count = vertcount;
                    107: 
                    108:        WritePacket ((caddr_t) dcp);
                    109: #undef h
                    110: #undef size
                    111: #undef destOff
                    112: #undef path
                    113: #undef clip
                    114: #undef pstr
                    115: #undef pstate
                    116: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.