[Xcircuit-dev] code suggestion for major grid of snap points

[John Barry]

Hi,

I added the following code to line 5932, events.c(Xcircuit v 3.6.79)
It creates a grid of major snaps points - handy as a discrete guide for
for regular placement of devices and routing between(the alternative of
keeping the grid on all the time is harder on the eyes)

John

     /* jdb draw major snap points */
    /* spc3 = Xw units(pixels) per major snapspace */
    float major_snapspace = xobjs.pagelist[areawin->page]->gridspace *20;
    float spc3 = major_snapspace * areawin->vscale;
      if (spc > 4) {
     fpart = (float)(-areawin->pcorner.x)
            / major_snapspace;
         x = major_snapspace *
        (fpart - (float)((int)fpart)) * areawin->vscale;
     fpart = (float)(-areawin->pcorner.y)
            / major_snapspace;
         y = major_snapspace *
        (fpart - (float)((int)fpart)) * areawin->vscale;

         SetForeground(dpy, areawin->gc, GRIDCOLOR);
         for (i = x; i < (float)areawin->width; i += spc3) {
             for (j = (float)areawin->height - y; j > 0; j -= spc3) {
            XDrawArc(dpy, win, areawin->gc , (int)(i + 0.5)-1, (int)(j - 
0.5)-1, 2, 2, 0, 360*64);
        }
     }   
      };