private void AddGuide(float x, float y)
{
float relevantValue;
if (this.RulerSide == Wireframe.RulerSide.Left)
{
relevantValue = y - mOffsetSprite.Y;
}
else// if (this.RulerSide == Wireframe.RulerSide.Top)
{
relevantValue = x - mOffsetSprite.X;
}
AddGuide(relevantValue);
}