private void CreateElements()
{
bool bIsNodeCountLarge = this.IsEnoughCycle();
if (!bIsNodeCountLarge)
{
this.MinViewportAngle = COriginViewprotAngel;
this.MaxViewportAngle = COriginViewprotAngel + this.FileItems.Count * (360d / this.TemplateCount);
}
double dAverageAngle = 360d / TemplateCount;
this.TotalDegree = this.FileItems.Count * dAverageAngle;
for (int nIndex = 0; nIndex < this.FileItems.Count; nIndex++)
{
InteractivePanel3D oVisualItem = new InteractivePanel3D(this.FileItems[nIndex], nIndex);
double dDegree = nIndex * dAverageAngle;
Transform3DGroup oTransform3DGroup = this.CreateVisualItemTransform(dDegree);
oVisualItem.Transform = oTransform3DGroup;
oVisualItem.Degree = dDegree;
this.ElementList.Add(oVisualItem);
}
DoUpdateLayout();
CompositionTarget.Rendering -= CompositionTarget_AutoCarousel;
CompositionTarget.Rendering += CompositionTarget_AutoCarousel;
}
private void DoUpdateLayout()
{
for (int i = 0; i < ElementList.Count; i++)
{
InteractivePanel3D oVisualItem = this.ElementList[i];
if (oVisualItem.Degree + this.CameraAngleYZm.Angle >= this.TotalDegree / 2d)
{
oVisualItem.Degree -= this.TotalDegree;
}
else if (oVisualItem.Degree + this.CameraAngleYZm.Angle <= -this.TotalDegree / 2d)
{
oVisualItem.Degree += this.TotalDegree;
}
//元素块角度与3D场景旋转角度的角度差; 角度差在定义的范围内则元素块显示，否则隐藏
double dDistanceToCenter = Math.Abs(oVisualItem.Degree + this.CameraAngleYZm.Angle - COriginViewprotAngel);
if (dDistanceToCenter <= CBoundDegree)
{
this.SetVisualItemVisible(oVisualItem);
}
else
{
this.SetVisualItemInvisible(oVisualItem);
}
}
}
private void SetVisualItemInvisible(InteractivePanel3D oVisualItem)
{
if (oVisualItem.IsVisible)
{
if (this.Viewport3DZm.Children.Contains(oVisualItem))
{
this.Viewport3DZm.Children.Remove(oVisualItem);
oVisualItem.IsVisible = false;
}
}
}
private void SetVisualItemVisible(InteractivePanel3D oVisualItem)
{
if (!oVisualItem.IsVisible)
{
if (!this.Viewport3DZm.Children.Contains(oVisualItem))
{
oVisualItem.IsVisible = true;
oVisualItem.Transform = this.CreateVisualItemTransform(oVisualItem.Degree);
this.Viewport3DZm.Children.Add(oVisualItem);
}
}
}
private void FreeElements()
{
if (this.ElementList != null)
{
for (int i = 0; i < this.ElementList.Count; i++)
{
InteractivePanel3D oVisualItem = this.ElementList[i];
oVisualItem.Dispose();
}
this.Viewport3DZm.Children.Clear();
this.ElementList.Clear();
this.ElementList = null;
}
}
