internal void CenterPatch(LayoutPatch patch, double scale, HorizontalCenter hor, VerticalCenter ver)
{
// die Projektion ist ja zwei Anteile, unscaledProjection hält immer den Nullpunkt
// fest und skaliert nicht, und Placement platziert
BoundingRect areaext;
if (patch.Area != null)
{
areaext = patch.Area.Extent;
}
else
{
areaext = new BoundingRect(0.0, 0.0, paperWidth, paperHeight);
}
BoundingRect modelext = patch.Model.GetExtent(patch.Projection);
if (modelext.IsEmpty())
{
return;
}
GeoPoint2D modelcnt = modelext.GetCenter();
GeoPoint2D areacnt = areaext.GetCenter();
double factor, dx, dy;
patch.Projection.GetPlacement(out factor, out dx, out dy);
if (scale != 0.0)
{
factor = scale;
}
switch (hor)
{
case HorizontalCenter.left:
dx = areaext.Left - (modelext.Left * factor);
break;
case HorizontalCenter.center:
dx = areacnt.x - (modelcnt.x * factor);
break;
case HorizontalCenter.right:
dx = areaext.Right - (modelext.Right * factor);
break;
default:
break;
}
switch (ver)
{
case VerticalCenter.bottom:
dy = areaext.Bottom - (modelext.Bottom * factor);
break;
case VerticalCenter.center:
dy = areacnt.y - (modelcnt.y * factor);
break;
case VerticalCenter.top:
dy = areaext.Top - (modelext.Top * factor);
break;
default:
break;
}
patch.Projection.SetPlacement(factor, dx, dy);
}
/// <summary>
/// Centers the patch with the given index according to the horizontal and vertical
/// center mode. If scale is 0.0 the current scaling remains unchanged.
/// </summary>
/// <param name="index">index of the patch</param>
/// <param name="scale">scaling factor or 0.0</param>
/// <param name="hor">horizontal position mode</param>
/// <param name="ver">vertical position mode</param>
public void CenterPatch(int index, double scale, HorizontalCenter hor, VerticalCenter ver)
{
CenterPatch(patches[index], scale, hor, ver);
}
