dgcreate.c

This is dgcreate.c in view mode; [Download] [Up]
/* Copyright (c) 1992 The Geometry Center; University of Minnesota
   1300 South Second Street;  Minneapolis, MN  55454, USA;
   
This file is part of geomview/OOGL. geomview/OOGL is free software;
you can redistribute it and/or modify it only under the terms given in
the file COPYING, which you should have received along with this file.
This and other related software may be obtained via anonymous ftp from
geom.umn.edu; email: software@geom.umn.edu. */
static char *copyright = "Copyright (C) 1992 The Geometry Center";

/* Authors: Charlie Gunn, Stuart Levy, Tamara Munzner, Mark Phillips */

#include "discgrp.h"
#include "discgrpP.h"

DiscGrpElList *
DiscGrpElListCreate (DiscGrpElList *exist, ...)
{
    va_list a_list;
    DiscGrpElList *dgellist;
    DiscGrpEl 	*passedin;
    Transform 	*tformin;
    ColorA  	*colorin;
    char  	(*wordin)[DG_WORDLENGTH] = NULL;
    int 	*attrin;
    int		attr, copy = 1;
    int i;

    va_start (a_list, exist);
    if (exist == NULL) {
	dgellist = OOGLNewE(DiscGrpElList, "DiscGrpElListCreate discgrp");
	bzero(dgellist, sizeof(DiscGrpElList));
	}
    else (dgellist = exist);

    while (attr = va_arg (a_list, int)) switch (attr) {
	case CR_NELEM:
	    dgellist->num_el = va_arg (a_list, int);
	    if (dgellist->el_list)  OOGLFree(dgellist->el_list); 
	    dgellist->el_list = OOGLNewNE(DiscGrpEl, dgellist->num_el, "DiscGrpElListCreate: unable to allocate");
	    bzero(dgellist->el_list, sizeof(DiscGrpEl) * dgellist->num_el);
	    break;

	case DGCR_ELEM:		/* already packed up */
	    passedin = va_arg (a_list, DiscGrpEl *);
	    if (copy)	{
		for (i=0; i<dgellist->num_el; ++i)	{
		    dgellist->el_list[i] =  passedin[i];
		    TmCopy(passedin[i].tform, dgellist->el_list[i].tform);
		    }
		}
	    else	{
		if (dgellist->el_list) OOGLFree(dgellist->el_list);
		dgellist->el_list = passedin;
		}
	    break;

	case CR_ELEM:
	    tformin = va_arg (a_list, Transform *);
	    for (i=0; i<dgellist->num_el; ++i)	
		    TmCopy(tformin[i], dgellist->el_list[i].tform);
	    break;

	case CR_COLOR:
	    colorin = va_arg (a_list, ColorA *);
	    for (i=0; i<dgellist->num_el; ++i)	
		   dgellist->el_list[i].color = colorin[i];
	    break;

	/* we assume attributes is constant for this list */
	case DGCR_ATTRIBUTE:
	    attrin[0] = va_arg (a_list, int);
	    for (i=0; i<dgellist->num_el; ++i)	
		   dgellist->el_list[i].attributes = attrin[0];
	    break;

	/* or can be passed in as a list */
	case DGCR_ATTRIBUTELIST:
	    attrin = va_arg (a_list, int *);
	    for (i=0; i<dgellist->num_el; ++i)	
		   dgellist->el_list[i].attributes = attrin[i];
	    break;

	case DGCR_WORD:
	    wordin = (char (*)[DG_WORDLENGTH] ) va_arg (a_list, char *);
	    for (i=0; i<dgellist->num_el; ++i)	
		   strcpy(dgellist->el_list[i].word,  wordin[i]);
	    break;

	default:
	    if (GeomDecorate (dgellist, &copy, attr, &a_list)) {
		GeomError (0, "DiscGrpElListCreate: Undefined option: %d", attr);
		OOGLFree (dgellist);
		return NULL;
	    }

	}
    va_end (a_list);
    return(dgellist);
}

DiscGrp *
DiscGrpCreate (DiscGrp *exist, GeomClass *classp, va_list a_list)
{
    register DiscGrp *discgrp;
    int		attr, copy = 1;
    int		i;

    if (exist == NULL) {
	discgrp = OOGLNewE(DiscGrp, "DiscGrpCreate discgrp");
	bzero(discgrp, sizeof(DiscGrp));
	GGeomInit (discgrp, classp, DISCGRPMAGIC, NULL);
	discgrp->flag = DG_DDSLICE;  /* default is to slice off cusps */
	discgrp->name = NULL;
	discgrp->comment = NULL;
	discgrp->attributes = 0;
	discgrp->c2m = NULL;
	discgrp->fsa = NULL;
	discgrp->dimn = 3;	/* make a guess */
	discgrp->gens = NULL;
	discgrp->nhbr_list = NULL;
	discgrp->big_list = NULL;
	discgrp->cpoint = DGorigin;
	discgrp->camgeom = NULL;
	discgrp->ddgeom = NULL;
	discgrp->geom = NULL;
	discgrp->camgeomhandle = NULL;
	discgrp->ddgeomhandle = NULL;
	discgrp->geomhandle = NULL;
	discgrp->scale = .2;
	discgrp->enumdepth = 2;
	discgrp->enumdist = 5.0;
    } else {
	/* Check that exist is a DiscGrp... */
	discgrp = exist;
    }

    while (attr = va_arg (a_list, int)) switch (attr) {
	case DGCR_NAME:
	    discgrp->name = va_arg (a_list, char *);
	    break;

	case DGCR_COMMENT:
	    discgrp->comment = va_arg (a_list, char *);
	    break;

	case DGCR_FLAG:
	    discgrp->flag = va_arg (a_list, int);
	    break;

	case DGCR_ATTRIBUTE:
	    discgrp->attributes = va_arg (a_list, int);
	    break;

	case DGCR_GENS:
	    discgrp->gens = va_arg (a_list, DiscGrpElList *);
	    break;

	case DGCR_BIGLIST:
	    discgrp->big_list = va_arg (a_list, DiscGrpElList *);
	    break;

	case DGCR_CPOINT:
	    {
	    HPoint3 *cptr;
	    cptr = va_arg (a_list, HPoint3 *);
	    discgrp->cpoint = *cptr;
	    }
	    break;

	case DGCR_ENUMDEPTH:
	    discgrp->enumdepth = va_arg (a_list, int);
	    break;

	case DGCR_ENUMDIST:
	    discgrp->enumdist = ((float) va_arg (a_list, double));
	    break;

	case DGCR_SCALE:
	    discgrp->scale = ((float) va_arg (a_list, double));
	    break;

	case DGCR_CAMGEOM:
	    discgrp->camgeom = va_arg (a_list, Geom *);
	    break;

	case DGCR_DDGEOM:
	    discgrp->ddgeom = va_arg (a_list, Geom *);
	    break;

	case CR_GEOM:
	    discgrp->geom = va_arg (a_list, Geom *);
	    break;

	default:
	    if (GeomDecorate (discgrp, &copy, attr, &a_list)) {
		GeomError (0, "DiscGrpCreate: Undefined option: %d", attr);
		OOGLFree (discgrp);
		return NULL;
	    }
    }
    return discgrp;
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.