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/*
* rdm_curve.c - routines to read 2D/3D curve data from an MTV-format.
*
* The data is assumed to be sandwiched between $DATA=xxx lines
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include "CNplot.h"
#define BOUNDARY 0.025
int CNmtv_read_curve2D_data();
int CNmtv_read_curve3D_data();
int CNmtv_read_contcurve_data();
int CNmtv_read_curve_data();
static int read_curve_data();
static void read_cv_options();
static void curve_itemno_err();
static CNdouble def_mval = {0.0, 0};
/*
* Read data in 2D format
* Return an EOF if such is found during the read; otherwise return 0
*/
int CNmtv_read_curve2D_data(Dptr,
dataID,dataname,filename,fp,lineno,header,verbose)
CNdatasetptr *Dptr; /* The dataset pointer */
int *dataID; /* Data ID */
char *dataname; /* Dataset name */
char *filename; /* The name of the file/pipe source */
FILE *fp; /* The file/pipe source */
int *lineno; /* Current line number */
char *header; /* Header string */
int verbose; /* Verbosity Flag */
{
int status;
status = CNmtv_read_curve_data(CN_FALSE,
Dptr,dataID,dataname,
filename,fp,lineno,header,verbose);
return(status);
}
/*
* Read data in 3D format
* Return an EOF if such is found during the read; otherwise return 0
*/
int CNmtv_read_curve3D_data(Dptr,
dataID,dataname,filename,fp,lineno,header,verbose)
CNdatasetptr *Dptr; /* The dataset pointer */
int *dataID; /* Data ID */
char *dataname; /* Dataset name */
char *filename; /* The name of the file/pipe source */
FILE *fp; /* The file/pipe source */
int *lineno; /* Current line number */
char *header; /* Header string */
int verbose; /* Verbosity Flag */
{
int status;
status = CNmtv_read_curve_data(CN_TRUE,
Dptr,dataID,dataname,
filename,fp,lineno,header,verbose);
return(status);
}
/*
* Read data in 3D-contour format
* Return an EOF if such is found during the read; otherwise return 0
*/
int CNmtv_read_contcurve_data(Dptr,
dataID,dataname,filename,fp,lineno,header,verbose)
CNdatasetptr *Dptr; /* The dataset pointer */
int *dataID; /* Data ID */
char *dataname; /* Dataset name */
char *filename; /* The name of the file/pipe source */
FILE *fp; /* The file/pipe source */
int *lineno; /* Current line number */
char *header; /* Header string */
int verbose; /* Verbosity Flag */
{
CNcontstepptr cstephead=NULL, csteptail=NULL;
CNviewptr view_pr;
CNcurve_property cv_property;
CNdataset_property ds_property;
CNplotset_property pt_property;
CNcurveptr curvehead=NULL, curvetail=NULL, C;
CNannotptr annothead=NULL, annottail=NULL;
CNpointptr pointhead=NULL, pointtail=NULL, P, pt;
CNnodeptr nodehead =NULL, nodetail =NULL, nd0, nd1, nd2;
CNtriaptr triahead =NULL, triatail =NULL;
int ndID=0, trID=0, npoints;
int header_found = CN_FALSE;
int boundary = CN_FALSE;
double xmin, xmax, ymin, ymax, zmin, zmax;
/* Print info */
(void) fprintf(stdout,"\n Reading %s data...(line %d)\n",
"CONTCURVE", *lineno);
/* Initialize */
*Dptr = NULL;
/* Set the view parameters */
view_pr = CNcreate_view();
/* Set the properties of the plotset */
CNset_default_plotset_property(&pt_property);
/* Set the properties of the dataset */
CNset_default_dataset_property(&ds_property);
/* Set the properties of the curve */
CNset_default_curve_property(&cv_property);
/* Read curve data */
header_found = read_curve_data(fp,lineno,header,CN_TRUE,
"CONTCURVE",
&curvehead, &curvetail,
&xmin, &xmax, &ymin, &ymax, &zmin, &zmax,
&annothead, &annottail,
view_pr, &pt_property,
&ds_property, &cv_property,
&cstephead, &csteptail,
&boundary,
verbose);
/* Go thru the curves and convert them to triangles/rectangles */
for (C=curvehead; C!=NULL; C=C->next) {
npoints = CNcount_points(C->pointhead,C->pointtail);
if (npoints == 3) {
P = C->pointhead;
pt = CNinsert_point(&pointhead,&pointtail,P->x,P->y,P->z,P->ID);
nd0 = CNinsert_tailnode(&nodehead,&nodetail,pt,P->z,ndID++);
P = P->next;
pt = CNinsert_point(&pointhead,&pointtail,P->x,P->y,P->z,P->ID);
nd1 = CNinsert_tailnode(&nodehead,&nodetail,pt,P->z,ndID++);
P = P->next;
pt = CNinsert_point(&pointhead,&pointtail,P->x,P->y,P->z,P->ID);
nd2 = CNinsert_tailnode(&nodehead,&nodetail,pt,P->z,ndID++);
(void)CNinsert_tria(&triahead,&triatail,nd0,nd1,nd2,0,trID++);
} else if (npoints >=4) {
CNtriangulate_polygon(C->pointhead, C->pointtail,
&pointhead, &pointtail,
&nodehead, &nodetail,
&triahead, &triatail, &trID);
} else {
(void) fprintf(stdout,"Warning! Cannot contour %d-sided polygon\n",
npoints);
}
}
/* Delete all the curves */
CNdelete_curve_list(&curvehead, &curvetail);
/* slice and dice the triangles and place results in a linked list */
if (triahead!=NULL) {
*Dptr = CNget_triangular_contour_data(filename,dataname,
xmin,xmax,ymin,ymax,zmin,zmax,
triahead,triatail, (*dataID));
if ((*Dptr) != NULL) (*dataID)++;
if ((*Dptr) != NULL) {
/* Save the point, nodelist */
(*Dptr)->pointhead = pointhead;
(*Dptr)->pointtail = pointtail;
(*Dptr)->nodehead = nodehead;
(*Dptr)->nodetail = nodetail;
/* Save the annotations */
(*Dptr)->annothead = annothead;
(*Dptr)->annottail = annottail;
/* Apply the view options to the dataset */
CNset_view_property((*Dptr)->view_pr,view_pr);
/* Apply the plotset options to the dataset */
CNset_plotset_property(&((*Dptr)->plot_pr),&pt_property);
/* Apply the dataset options to the dataset */
CNset_dataset_property(&((*Dptr)->data_pr),&ds_property);
/* Apply the contsteps */
if (cstephead != NULL) {
(*Dptr)->cstephead = cstephead;
(*Dptr)->csteptail = csteptail;
}
/* Slice the contours */
CNslice_contours((*Dptr),verbose);
/* Print out the curve */
if (verbose) CNprint_dataset((*Dptr),0);
}
}
/* Failed */
if ((*Dptr)==NULL) {
CNdelete_tria_list (&triahead , &triatail);
CNdelete_node_list (&nodehead , &nodetail);
CNdelete_point_list(&pointhead, &pointtail);
CNdelete_contstep_list(&cstephead, &csteptail);
CNdelete_annotation_list(&annothead, &annottail);
}
/* Reset the property structures */
CNdelete_plotset_property_fields(&pt_property);
CNdelete_dataset_property_fields(&ds_property);
CNdelete_curve_property_fields(&cv_property);
/* Free the view structure */
CNdelete_view(view_pr);
/* Print out info */
if ((*Dptr) != NULL)
(void) fprintf(stdout," %8s : Read %d triangles\n",
"CONTCURV", trID);
else
(void) fprintf(stdout," %8s : Format error - couldn't read data!\n",
"CONTCURV");
/* return */
if (!header_found)
return(EOF);
else
return(header_found);
}
/*
* Read data in 2D/3D format
* Return an EOF if such is found during the read; otherwise return 0
*/
int CNmtv_read_curve_data(threed,
Dptr,
dataID,dataname,filename,fp,lineno,header,verbose)
int threed; /* 3D data flag */
CNdatasetptr *Dptr; /* The dataset pointer */
int *dataID; /* Data ID */
char *dataname; /* Dataset name */
char *filename; /* The name of the file/pipe source */
FILE *fp; /* The file/pipe source */
int *lineno; /* Current line number */
char *header; /* Header string */
int verbose; /* Verbosity Flag */
{
CNcontstepptr cstephead=NULL, csteptail=NULL;
CNviewptr view_pr;
CNcurve_property cv_property;
CNdataset_property ds_property;
CNplotset_property pt_property;
CNcurveptr curvehead=NULL, curvetail=NULL;
CNannotptr annothead=NULL, annottail=NULL;
int header_found = CN_FALSE;
int boundary = CN_FALSE;
double xmin, xmax, ymin, ymax, zmin, zmax;
double delta;
/* Print info */
(void) fprintf(stdout,"\n Reading %s data...(line %d)\n",
((threed) ? "CURVE3D " : "CURVE2D "), *lineno);
/* Initialize */
*Dptr = NULL;
/* Set the view parameters */
view_pr = CNcreate_view();
/* Set the properties of the plotset */
CNset_default_plotset_property(&pt_property);
/* Set the properties of the dataset */
CNset_default_dataset_property(&ds_property);
/* Set the properties of the curve */
CNset_default_curve_property(&cv_property);
/* Read curve data */
header_found = read_curve_data(fp,lineno,header,threed,
((threed) ? "CURVE3D " : "CURVE2D "),
&curvehead, &curvetail,
&xmin, &xmax, &ymin, &ymax, &zmin, &zmax,
&annothead, &annottail,
view_pr, &pt_property,
&ds_property, &cv_property,
&cstephead, &csteptail,
&boundary,
verbose);
/* Now create the dataset */
if (curvehead != NULL) {
/* Adjust xmin, xmax, ymin, ymax, zmin, zmax */
CNmtv_adjust_boundaries(&xmin, &xmax, &ymin, &ymax, &zmin, &zmax);
/* Provide a boundary layer */
if (boundary) {
delta = xmax - xmin;
xmin -= BOUNDARY*delta;
xmax += BOUNDARY*delta;
delta = ymax - ymin;
ymin -= BOUNDARY*delta;
ymax += BOUNDARY*delta;
delta = zmax - zmin;
zmin -= BOUNDARY*delta;
zmax += BOUNDARY*delta;
}
/*
* If the plot-boundary has been set in the options then
* use that as the true plot boundary
*/
if ((pt_property.flag1 & CNvxmin) != 0) xmin = pt_property.vxmin;
if ((pt_property.flag1 & CNvymin) != 0) ymin = pt_property.vymin;
if ((pt_property.flag1 & CNvzmin) != 0) zmin = pt_property.vzmin;
if ((pt_property.flag1 & CNvxmax) != 0) xmax = pt_property.vxmax;
if ((pt_property.flag1 & CNvymax) != 0) ymax = pt_property.vymax;
if ((pt_property.flag1 & CNvzmax) != 0) zmax = pt_property.vzmax;
/* Store the curves in a dataset */
*Dptr = CNmake_dataset(filename,dataname,
((threed) ? CN_PLOT3D : CN_PLOT2D),
xmin,xmax,ymin,ymax,zmin,zmax,
xmin,xmax,ymin,ymax,zmin,zmax,*dataID);
if ((*Dptr) != NULL) (*dataID)++;
if ((*Dptr) != NULL) {
(*Dptr)->curvehead = curvehead;
(*Dptr)->curvetail = curvetail;
(*Dptr)->annothead = annothead;
(*Dptr)->annottail = annottail;
/* Apply the view options to the dataset */
CNset_view_property((*Dptr)->view_pr,view_pr);
/* Apply the plotset options to the dataset */
CNset_plotset_property(&((*Dptr)->plot_pr),&pt_property);
/* Apply the dataset options to the dataset */
CNset_dataset_property(&((*Dptr)->data_pr),&ds_property);
/* Apply the contsteps */
if (cstephead != NULL) {
(*Dptr)->cstephead = cstephead;
(*Dptr)->csteptail = csteptail;
}
/* Print out the dataset */
if (verbose) CNprint_dataset(*Dptr, 0);
#ifdef DEBUG
/* Print out the curves */
CNprint_curve_list((*Dptr)->curvehead, (*Dptr)->curvetail, 1);
#endif
}
}
/* Failed */
if ((*Dptr)==NULL) {
CNdelete_curve_list(&curvehead, &curvetail);
CNdelete_contstep_list(&cstephead, &csteptail);
CNdelete_annotation_list(&annothead, &annottail);
}
/* Reset the property structures */
CNdelete_plotset_property_fields(&pt_property);
CNdelete_dataset_property_fields(&ds_property);
CNdelete_curve_property_fields(&cv_property);
/* Free the view structure */
CNdelete_view(view_pr);
/* Print out info */
if ((*Dptr) != NULL)
(void) fprintf(stdout," %8s : Read %d curves\n",
((threed) ? "CURVE3D " : "CURVE2D "),
CNcount_curves((*Dptr)->curvehead, (*Dptr)->curvetail));
else
(void) fprintf(stdout," %8s : Format error - couldn't read data!\n",
((threed) ? "CURVE3D " : "CURVE2D "));
/* return */
if (!header_found)
return(EOF);
else
return(header_found);
}
/*
* Read data in 2D/3D format
* Return an EOF if such is found during the read; otherwise return 0
*/
static int read_curve_data(fp,lineno,header,
threed, format,
curvehead, curvetail,
xmin, xmax, ymin, ymax, zmin, zmax,
annothead, annottail,
view_pr, pt_property,
ds_property, cv_property,
cstephead, csteptail,
boundary,
verbose)
FILE *fp; /* The file/pipe source */
int *lineno; /* Current line number */
char *header; /* Header string */
int threed; /* Flag for 3D data */
char *format; /* Format for 2D/3D data*/
CNcurveptr *curvehead, *curvetail; /* Curve list */
double *xmin, *xmax; /* x-limits */
double *ymin, *ymax; /* y-limits */
double *zmin, *zmax; /* z-limits */
CNannotptr *annothead, *annottail; /* Annotations */
CNviewptr view_pr; /* View parameters */
CNplotset_property *pt_property; /* Plot property */
CNdataset_property *ds_property; /* Data property */
CNcurve_property *cv_property; /* Curve property */
CNcontstepptr *cstephead, *csteptail; /* Contour step list */
int *boundary; /* Add boundary flag */
int verbose; /* Verbosity Flag */
{
CNgbcurve_property gb_property; /* GlobalCurve property */
CNcurveptr Cptr=NULL;
double *xarr=NULL, *yarr=NULL, *zarr=NULL;
int len, ierr=0, curveID=0, ptID=0, ncurves, npts, i, n, ID;
char line[BUFSIZ];
int header_found = CN_FALSE;
int newcurve = CN_TRUE;
int invalid_grid = CN_FALSE;
int read_err = CN_FALSE;
double x,y,z=0.0;
CNdouble rnpts;
CNdouble curveNo;
int ID_FOUND = CN_FALSE;
int binary;
/* Initialize */
*xmin = CN_LARGE;
*xmax = -CN_LARGE;
*ymin = CN_LARGE;
*ymax = -CN_LARGE;
*zmin = CN_LARGE;
*zmax = -CN_LARGE;
rnpts = def_mval;
curveNo = def_mval;
/* Set the global properties of the curve */
CNset_default_gbcurve_property(&gb_property);
/* Keep on reading until a "$" is encountered */
while (!header_found && CNgetucline(fp, line, lineno, BUFSIZ) != EOF) {
if (((len=strlen(line)) == 0) || (len==1 && line[0]=='\n')) {
/* Apply the curve options to the old curve */
if (Cptr!=NULL) CNset_curve_property(&(Cptr->curv_pr),cv_property);
/* If the curve ID has been specified, use it */
if (Cptr && curveNo.def) Cptr->ID = (int) curveNo.val;
/* New curve */
newcurve = CN_TRUE;
Cptr = NULL;
ptID = 0;
curveNo = def_mval;
CNdelete_curve_property_fields(cv_property);
CNset_default_curve_property(cv_property);
/*EMPTY*/
} else if (line[0] == '#') {
/* Comment */
;
} else if (line[0] == '$') {
/* Header */
line[0] = ' ';
(void) strcpy(header, line);
header_found = CN_TRUE;
} else if (line[0] == '@') {
/* Annotation */
line[0] = ' ';
CNparse_annotation_line(line, BUFSIZ,
annothead, annottail,
verbose);
} else if (line[0] == '%') {
/* Option */
line[0] = ' ';
read_cv_options(format,line,
view_pr,pt_property,ds_property,cv_property,
&gb_property,
&rnpts,&binary,boundary,&curveNo,verbose);
if ((ds_property->contours) && ((ds_property->flag1 & CNctrlevel)!=0))
CNset_contstep_levels(cstephead, csteptail, ds_property);
/* Binary format - data follows on next line */
if (binary) {
/* Set the number of grid points */
invalid_grid = CNmtv_check_points(&rnpts,&npts,"npts",
format,*lineno);
if (!invalid_grid) {
/* Read the data */
xarr = CNmtv_read_binary_dbl_array(fp,npts);
yarr = CNmtv_read_binary_dbl_array(fp,npts);
if (threed)
zarr = CNmtv_read_binary_dbl_array(fp,npts);
rnpts= def_mval;
if (xarr == NULL || yarr == NULL || (threed && zarr==NULL)) {
CNfree_1D_double_array(xarr);
CNfree_1D_double_array(yarr);
if (threed)
CNfree_1D_double_array(zarr);
} else {
/* Save the data */
if (newcurve) {
/* Allocate a curve data structure */
Cptr = CNinsert_curve(curvehead, curvetail, curveID++);
/* Start collecting points in this curve */
newcurve = CN_FALSE;
}
if (Cptr!=NULL) {
for (i=0; i<npts; i++) {
/* Insert the point */
x = xarr[i];
y = yarr[i];
z = (threed) ? zarr[i] : 0.0;
if (x < *xmin) *xmin = x;
if (x > *xmax) *xmax = x;
if (y < *ymin) *ymin = y;
if (y > *ymax) *ymax = y;
if (z < *zmin) *zmin = z;
if (z > *zmax) *zmax = z;
(void) CNinsert_point(&(Cptr->pointhead),
&(Cptr->pointtail),
x,y,z,i);
}
}
}
/* Free the arrays */
if (xarr != NULL) CNfree_1D_double_array(xarr);
if (yarr != NULL) CNfree_1D_double_array(yarr);
if (zarr != NULL) CNfree_1D_double_array(zarr);
}
}
} else if (!invalid_grid) {
/* Must be ascii data */
/* Read the data */
read_err = CN_TRUE;
ID_FOUND = CN_FALSE;
if (threed) {
/* Read 3 numbers plus optional ID from the line */
if ((n=sscanf(line,"%lf %lf %lf %d",&x,&y,&z,&ID)) != 3 && n!=4){
curve_itemno_err(format,(*lineno),3,ierr++);
} else {
if (n==4) ID_FOUND=CN_TRUE;
read_err = CN_FALSE;
}
} else {
/* Read 2 numbers plus optional ID from the line */
if ((n=sscanf(line,"%lf %lf %d",&x,&y,&ID)) != 2 && n!=3){
curve_itemno_err(format,(*lineno),2,ierr++);
} else {
if (n==3) ID_FOUND=CN_TRUE;
read_err = CN_FALSE;
}
}
if (!read_err) {
if (newcurve) {
/* Allocate a curve data structure */
Cptr = CNinsert_curve(curvehead, curvetail, curveID++);
/* Start collecting points in this curve */
newcurve = CN_FALSE;
}
if (Cptr != NULL) {
/* Insert the point */
if (x < *xmin) *xmin = x;
if (x > *xmax) *xmax = x;
if (y < *ymin) *ymin = y;
if (y > *ymax) *ymax = y;
if (z < *zmin) *zmin = z;
if (z > *zmax) *zmax = z;
(void) CNinsert_point(&(Cptr->pointhead),&(Cptr->pointtail),
x,y,z,((ID_FOUND) ? ID : (ptID++)));
}
}
}
}
/* Apply the curve options to the last curve */
if (Cptr!=NULL) CNset_curve_property(&(Cptr->curv_pr),cv_property);
/* If the curve ID has been specified, use it */
if (Cptr && curveNo.def) Cptr->ID = (int) curveNo.val;
/* Go thru the curves and report the findings */
ncurves = CNcount_curves(*curvehead, *curvetail);
if (verbose) {
(void) fprintf(stdout," Read %d curve(s)\n",ncurves);
for (Cptr=(*curvehead); Cptr!= NULL; Cptr=Cptr->next) {
npts = CNcount_points(Cptr->pointhead, Cptr->pointtail);
(void) fprintf(stdout," Curve #%2d : %4d points\n",Cptr->ID,npts);
}
}
/* Apply the global-curve dataset properties to the individual curves */
if (gb_property.flag != 0)
CNreset_curves(*curvehead, *curvetail, &gb_property, 0);
/* Reset the property structures */
CNdelete_gbcurve_property_fields(&gb_property);
/* return */
if (!header_found)
return(EOF);
else
return(header_found);
}
/*
* READING UTILITIES FOR 2D/3D CURVES
*/
/*
* Read a line and apply options to a dataset or a curve
*/
static void read_cv_options(format,header,
view_pm,pt_prop,ds_prop,cv_prop,
gb_prop,rnpts,binary,boundary,curveNo,vbs)
char *format;
char *header;
CNviewptr view_pm;
CNplotset_property *pt_prop;
CNdataset_property *ds_prop;
CNcurve_property *cv_prop;
CNgbcurve_property *gb_prop;
CNdouble *rnpts;
int *binary;
int *boundary;
CNdouble *curveNo;
int vbs;
{
char *argtbl[CN_MAXWORDS], *valtbl[CN_MAXWORDS];
char newheader[CN_MAXCHAR];
int nargs = 0, nvals = 0;
int argfound, i;
/* Initialize */
*binary = CN_FALSE;
/* CNparse_line wants "command arg=val arg=val" so create a new header */
(void) sprintf(newheader, "datafile %s",header);
/* Get the argument-value pairs from the line */
if (CNparse_line(newheader, CN_MAXCHAR,
&nargs, argtbl, CN_MAXWORDS,
&nvals, valtbl, CN_MAXWORDS)) {
/* Go thru the arguments and find specialized matches */
i = 0;
while (i < nargs) {
/* Go thru the arguments and find a match */
argfound = CN_TRUE;
if (strcmp(argtbl[i],"npts")==0) {
rnpts->val = atof(valtbl[i]);
rnpts->def = CN_TRUE;
if (vbs)
(void)fprintf(stdout," %8s: %-14s= %d\n",
format,"npts",(int)rnpts->val);
} else if (strcmp(argtbl[i],"binary")==0) {
*binary = CN_TRUE;
if (vbs)
(void)fprintf(stdout," %8s: %-14s= %s\n",format,"Binary","ON");
} else if (strcmp(argtbl[i],"boundary")==0) {
*boundary = CN_TRUE;
if (vbs)
(void)fprintf(stdout," %8s: %-14s= %s\n",format,"Boundary","ON");
} else if (strcmp(argtbl[i],"curveno")==0) {
curveNo->val = atof(valtbl[i]);
curveNo->def = CN_TRUE;
if (vbs)
(void)fprintf(stdout," %8s: %-14s= %d\n",
format,"curveno",(int)rnpts->val);
} else {
argfound = CN_FALSE;
}
/* Reset the table if a match was found; otherwise increment index */
CNdownshift(argfound,&i,argtbl,valtbl,&nargs,&nvals);
}
/* Look for plotset/dataset/curve arguments */
for (i=0; i<nargs; i++) {
if (!CNparse_view_property (view_pm,argtbl[i],valtbl[i],vbs))
if (!CNparse_plotset_property (pt_prop,argtbl[i],valtbl[i],vbs))
if (!CNparse_dataset_property(ds_prop,argtbl[i],valtbl[i],vbs))
if (!CNparse_gbcurve_property(gb_prop,argtbl[i],valtbl[i],vbs))
if (!CNparse_curve_property(cv_prop,argtbl[i],valtbl[i],vbs))
(void) fprintf(stderr,
" warning : Invalid option \"%s=%s\"\n",
argtbl[i],valtbl[i]);
}
/* Clear the tables */
CNfreewords(&nargs, argtbl);
CNfreewords(&nvals, valtbl);
}
}
/*
* Print item-number error
*/
/*ARGSUSED*/
static void curve_itemno_err(format,lineno,itemno,ierr)
char *format;
int lineno,itemno,ierr;
{
(void) fprintf(stderr," warning (line %3d) %8s: ",lineno,format);
(void) fprintf(stderr,"need %d items\n",itemno);
}
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