app_vinfo.C

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/* Gxsm - Gnome X Scanning Microscopy
 * universal STM/AFM/SARLS/SPALEED/... controlling and
 * data analysis software
 * 
 * Copyright (C) 1999,2000,2001,2002,2003 Percy Zahl
 *
 * Authors: Percy Zahl <zahl@users.sf.net>
 * additional features: Andreas Klust <klust@users.sf.net>
 * WWW Home: http://gxsm.sf.net
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

/* -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 8 c-style: "K&R" -*- */

#include "gxsm_app.h"

#include "unit.h"
#include "pcs.h"
#include "xsmtypes.h"
#include "glbvars.h"

#include "app_vinfo.h"
#include "clip.h"


ViewInfo::ViewInfo(Scan *Sc, int qf, int zf){
  Qfac = qf; Zfac = zf;
  sc=Sc; 
  ux=uy=uz=NULL; // use "Scan" Units

  SetPixelUnit (FALSE);
  SetCoordMode ();
}

UnitObj *ViewInfo::Ux(){
        return ux ? ux : sc->data.Xunit; 
}
UnitObj *ViewInfo::Uy(){ 
        return uy ? uy : sc->data.Yunit;
}
UnitObj *ViewInfo::Uz(){ 
        return uz ? uz : sc->data.Zunit; 
}

gchar *ViewInfo::makeXinfo(double x){ 
        x *= Qfac;
        if (x<0. || x >= sc->mem2d->GetNx())
                return g_strdup ("x out of range");
        if (pixelmode)
                return Ux ()->UsrString(x);
        return Ux()->UsrString (sc->GetWorldX ((int)x)); // only relative mode!
}

gchar *ViewInfo::makeDXYinfo (double xy1a[2], double xy2a[2], Point2D *p1, Point2D *p2){
        double xy1[2], xy2[2], dx, dy;
        gchar  *infostring = NULL;
        memcpy (xy1, xy1a, sizeof(xy1));
        memcpy (xy2, xy2a, sizeof(xy2));
        xy1[0] *= Qfac; xy1[1] *= Qfac;
        xy2[0] *= Qfac; xy2[1] *= Qfac;

        if (cohen_sutherland_line_clip_d (&xy1[0], &xy1[1], &xy2[0], &xy2[1],
                                      0.,0.,
                                      (double)sc->mem2d->GetNx()-1, (double)sc->mem2d->GetNy()-1)
            != NotClipped)
                infostring = g_strdup (", line was clipped! ");

        if(p1){
                p1->x = R2INT(xy1[0]);
                p1->y = R2INT(xy1[1]);
        }
        if(p2){
                p2->x = R2INT(xy2[0]);
                p2->y = R2INT(xy2[1]);
        }

        if(pixelmode){
                dx = xy2[0]-xy1[0];
                dy = xy2[1]-xy1[1];
        }else{
                double x1,x2,y1,y2;
                sc->Pixel2World ((int)xy1[0], (int)xy1[1], x1, y1, SCAN_COORD_RELATIVE);
                sc->Pixel2World ((int)xy2[0], (int)xy2[1], x2, y2, SCAN_COORD_RELATIVE);
                dx = x2 - x1;
                dy = y2 - y1;
        }

        gchar *tmp=infostring, *tmp2;
        infostring = g_strconcat (tmp2 = Ux()->UsrString(sqrt(dx*dx + dy*dy)), tmp, NULL);
        g_free (tmp);
        g_free (tmp2);

        return infostring;
}

gchar *ViewInfo::makeDnXYinfo(double *xy, int n){
        double *xyc = new double[2*n];
        double dx,dy;

        for (int i=0; i<2*n; ++i)
                xyc[i] = xy[i]*Qfac;

        dx = dy = 0.;
        if(pixelmode){
                for (int i=2; i<2*n; i+=2){
                        dx += fabs (xyc[i] - xyc[i-2]);
                        dy += fabs (xyc[i+1] - xyc[i-1]);
                }
        }else{
                double x1,x2,y1,y2;
                for (int i=2; i<2*n; i+=2){
                        sc->Pixel2World ((int)xyc[i-2], (int)xyc[i-1], x1, y1, SCAN_COORD_RELATIVE);
                        sc->Pixel2World ((int)xyc[i], (int)xyc[i+1], x2, y2, SCAN_COORD_RELATIVE);
                        dx += fabs (x2 - x1);
                        dy += fabs (y2 - y1);
                }
        }
        delete[] xyc;

        return Ux ()->UsrString (sqrt (dx*dx + dy*dy));
}


gchar *ViewInfo::makeA2info(double xy1a[2], double xy2a[2]){
        double xy1[2], xy2[2], dx, dy;
        memcpy(xy1, xy1a, sizeof(xy1));
        memcpy(xy2, xy2a, sizeof(xy2));
        xy1[0] *= Qfac; xy1[1] *= Qfac;
        xy2[0] *= Qfac; xy2[1] *= Qfac;
        if(xy1[0]<0. || xy1[0] >= sc->mem2d->GetNx() || xy2[0]<0. || xy2[0] >= sc->mem2d->GetNx())
                return g_strdup("x out of range");
        if(xy1[1]<0. || xy1[1] >= sc->mem2d->GetNx() || xy2[1]<0. || xy2[1] >= sc->mem2d->GetNx())
                return g_strdup("y out of range");
        if(pixelmode)
                return Ux()->UsrStringSqr((xy2[0]-xy1[0]) * (xy2[1]-xy1[1]) );

        {
                double x1,x2,y1,y2;
                sc->Pixel2World ((int)xy1[0], (int)xy1[1], x1, y1, SCAN_COORD_RELATIVE);
                sc->Pixel2World ((int)xy2[0], (int)xy2[1], x2, y2, SCAN_COORD_RELATIVE);
                dx = x2 - x1;
                dy = y2 - y1;
        }
        return Ux()->UsrStringSqr (dx*dy);
}

gchar *ViewInfo::makeXYinfo(double x, double y, Point2D *p){ 
        double mx = x*Qfac, xx;
        double my = y*Qfac, yy;
        xx = R2INT(mx); xx=MIN(sc->mem2d->GetNx()-1, MAX(0,xx));
        yy = R2INT(my); yy=MIN(sc->mem2d->GetNy()-1, MAX(0,yy));
        if(p){
                p->x = R2INT(xx);
                p->y = R2INT(yy);
        }
        
        if(!pixelmode)
                sc->Pixel2World ((int)xx, (int)yy, mx, my, sc_mode);
        
        gchar *px  = Ux()->UsrString(mx);
        gchar *py  = Uy()->UsrString(my);
        gchar *pxy = g_strconcat("(", px, ", ", py, ")", NULL);
        g_free(py);
        g_free(px);
        return pxy;
}

gchar *ViewInfo::makedXdYinfo(double xy1a[2], double xy2a[2]){ 
        double dmx, dmy;
        if(pixelmode){
                dmx = (xy2a[0]-xy1a[0])*Qfac;
                dmy = (xy2a[1]-xy1a[1])*Qfac;
        }else{
                double xy1[2], xy2[2];
                memcpy(xy1, xy1a, sizeof(xy1));
                memcpy(xy2, xy2a, sizeof(xy2));
                xy1[0] *= Qfac; xy1[1] *= Qfac;
                xy2[0] *= Qfac; xy2[1] *= Qfac;
                if(xy1[0]<0. || xy1[0] >= sc->mem2d->GetNx() || xy2[0]<0. || xy2[0] >= sc->mem2d->GetNx())
                        return g_strdup("x out of range");
                if(xy1[1]<0. || xy1[1] >= sc->mem2d->GetNx() || xy2[1]<0. || xy2[1] >= sc->mem2d->GetNx())
                        return g_strdup("y out of range");

                {
                        double x1,x2,y1,y2;
                        sc->Pixel2World ((int)xy1[0], (int)xy1[1], x1, y1, SCAN_COORD_RELATIVE);
                        sc->Pixel2World ((int)xy2[0], (int)xy2[1], x2, y2, SCAN_COORD_RELATIVE);
                        dmx = x2 - x1;
                        dmy = y2 - y1;
                }
        }
        gchar *px  = Ux()->UsrString(dmx);
        gchar *py  = Uy()->UsrString(dmy);
        gchar *pxy = g_strconcat("d(", px, ", ", py, ")", NULL);
        g_free(py);
        g_free(px);
        return pxy;
}

gchar *ViewInfo::makeXYZinfo(double x, double y, Point2D *p){ 
        double mx = x*Qfac, xx;
        double my = y*Qfac, yy;
        gchar *us=NULL;
        xx = R2INT(mx); xx=MIN(sc->mem2d->GetNx()-1, MAX(0,xx));
        yy = R2INT(my); yy=MIN(sc->mem2d->GetNy()-1, MAX(0,yy));
        if(p){
                p->x = R2INT(xx);
                p->y = R2INT(yy);
        }
        int ix=(int)xx, iy=(int)yy;

        if(!pixelmode)
                sc->Pixel2World (ix, iy, mx, my, sc_mode);

        gchar *px  = Ux()->UsrString(mx);
        gchar *py  = Uy()->UsrString(my);
        gchar *pxy = g_strconcat("(", px, ", ", py, 
                                 ")=",
                                 (( ix >= 0 && iy >= 0
                                    && ix < sc->mem2d->GetNx() && iy < sc->mem2d->GetNy())
                                  ? us=Uz()->UsrString(sc->mem2d->GetDataPkt(ix,iy)*(pixelmode ? 1. : sc->data.s.dz))
                                  : "out of scan !"),
                                 NULL);
        if(us) g_free(us);
        g_free(py);
        g_free(px);
        return pxy;
}

// absolute Ang to "Canvas World", Qfac applies!!
void ViewInfo::Angstroem2W(double &x, double &y){
        int ix,iy;
        sc->World2Pixel (x, y, ix, iy, SCAN_COORD_ABSOLUTE);
        x = (double)ix/Qfac;
        y = (double)iy/Qfac;
}

// "Canvas World", Qfac applies to absolute Ang!! 
void ViewInfo::W2Angstroem(double &x, double &y){
        int ix = (int)(x*Qfac);
        int iy = (int)(y*Qfac);
        sc->Pixel2World (ix, iy, x, y, SCAN_COORD_ABSOLUTE);
}

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