Re: gEDA-user: Just another minor pcb bug

[DJ Delorie <dj@xxxxxxxxxxx>]

> If Auto enforce DRC clearance is on, lines (traces) starting from a
> pad always snap to one of the pad endpoints.

This appears to be completely intentional, although I don't know the
reason behind it.



      if (TEST_FLAG (AUTODRCFLAG, PCB) && Settings.Mode == LINE_MODE)
	{
	  printf("1 %d %d\n", Crosshair.X, Crosshair.Y);
	  type = SearchScreen (Crosshair.X, Crosshair.Y,
			       PIN_TYPE | PAD_TYPE | VIA_TYPE, &ptr1, &ptr2,
			       &ptr3);
	  printf("2 %d %d\n", Crosshair.X, Crosshair.Y);
	  LookupConnection (Crosshair.X, Crosshair.Y, True, TO_PCB (1),
			    FOUNDFLAG);
	  printf("3 %d %d\n", Crosshair.X, Crosshair.Y);
	}
      if (type == PIN_TYPE || type == VIA_TYPE)
	{
	  Crosshair.AttachedLine.Point1.X =
	    Crosshair.AttachedLine.Point2.X = ((PinTypePtr) ptr2)->X;
	  Crosshair.AttachedLine.Point1.Y =
	    Crosshair.AttachedLine.Point2.Y = ((PinTypePtr) ptr2)->Y;
	}
      else if (type == PAD_TYPE)
	{
	  PadTypePtr pad = (PadTypePtr) ptr2;
	  float d1, d2;
	  d1 = SQUARE (Crosshair.X - pad->Point1.X) +
	    SQUARE (Crosshair.Y - pad->Point1.Y);
	  d2 = SQUARE (Crosshair.X - pad->Point2.X) +
	    SQUARE (Crosshair.Y - pad->Point2.Y);
	  if (d2 < d1)
	    {
	      Crosshair.AttachedLine.Point1 =
		Crosshair.AttachedLine.Point2 = pad->Point2;
	    }
	  else
	    {
	      Crosshair.AttachedLine.Point1 =
		Crosshair.AttachedLine.Point2 = pad->Point1;
	    }
	}
      else
	{
	  Crosshair.AttachedLine.Point1.X =
	    Crosshair.AttachedLine.Point2.X = Crosshair.X;
	  Crosshair.AttachedLine.Point1.Y =
	    Crosshair.AttachedLine.Point2.Y = Crosshair.Y;
	}


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