public virtual void NotifyViewport()
{
switch ( metricsMode )
{
case MetricsMode.Pixels:
{
OverlayManager oMgr = OverlayManager.Instance;
float vpWidth = oMgr.ViewportWidth;
float vpHeight = oMgr.ViewportHeight;
// cope with temporarily zero dimensions, avoid divide by zero
vpWidth = vpWidth == 0.0f ? 1.0f : vpWidth;
vpHeight = vpHeight == 0.0f ? 1.0f : vpHeight;
pixelScaleX = 1.0f / vpWidth;
pixelScaleY = 1.0f / vpHeight;
}
break;
case MetricsMode.Relative_Aspect_Adjusted:
{
OverlayManager oMgr = OverlayManager.Instance;
float vpWidth = oMgr.ViewportWidth;
float vpHeight = oMgr.ViewportHeight;
// cope with temporarily zero dimensions, avoid divide by zero
vpWidth = vpWidth == 0.0f ? 1.0f : vpWidth;
vpHeight = vpHeight == 0.0f ? 1.0f : vpHeight;
pixelScaleX = 1.0f / ( 10000.0f * ( vpWidth / vpHeight ) );
pixelScaleY = 1.0f / 10000.0f;
}
break;
case MetricsMode.Relative:
pixelScaleX = 1.0f;
pixelScaleY = 1.0f;
pixelLeft = left;
pixelTop = top;
pixelWidth = width;
pixelHeight = height;
break;
}
left = pixelLeft * pixelScaleX;
top = pixelTop * pixelScaleY;
width = pixelWidth * pixelScaleX;
height = pixelHeight * pixelScaleY;
isGeomPositionsOutOfDate = true;
}
/// <summary>
/// Adds another OverlayElement to this container.
/// </summary>
/// <param name="element"></param>
public virtual void AddChildElement(OverlayElement element)
{
Debug.Assert(!this.children.ContainsKey(element.Name),
string.Format("Child with name '{0}' already defined.", element.Name));
// add to lookup table and list
this.children.Add(element.Name, element);
// inform this child about his/her parent and zorder
element.NotifyParent(this, overlay);
element.NotifyZOrder(zOrder + 1);
element.NotifyWorldTransforms(xform);
element.NotifyViewport();
}
