public GridLines(RangeData.Axis axis)
{
m_axis = axis;
// The grid lines model is being updated all the time, we don't want to reallocate
// for each update. The step sizes used for the axis mean there is a maximum number
// of lines before a different step size is used, based on PixelsPerTick etc. Working
// out what it is a hard though. Have a reasonable guess and handle it if we guessed
// to small.
MaxLines = 100;
}
public GridLines(RangeData.Axis axis)
{
m_axis = axis;
MaxLines = 50;
}