/// <summary>
/// 绘制地球对象上的图层
/// </summary>
/// <param name="renderable"></param>
/// <param name="priority"></param>
/// <param name="drawArgs"></param>
private void Render(RenderableObject renderable, RenderPriority priority, DrawArgs drawArgs)
{
//若是绘制星星，则返回，因为星星图层已经绘制过了
//if (!renderable.IsOn || (renderable.Name != null && renderable.Name.Equals("Starfield")))
if (!renderable.IsOn || (renderable.Name != null && renderable.Name.Equals("星空")))
{
return;
}
//绘制Icon图层
if (priority == RenderPriority.Icons && renderable is Icons)
{
renderable.Render(drawArgs);
}
else if (priority == RenderPriority.GCPs && renderable is GCPs)
{
renderable.Render(drawArgs);
}
//绘制RenderableObjectList类型图层下的所有子图层
else if (renderable is RenderableObjectList)
{
RenderableObjectList rol = (RenderableObjectList)renderable;
for (int i = 0; i < rol.ChildObjects.Count; i++)
{
Render((RenderableObject)rol.ChildObjects[i], priority, drawArgs);
}
}
//绘制RenderPriority.SurfaceImages类型的图层
else if (priority == RenderPriority.TerrainMappedImages)
{
if (renderable.RenderPriority == RenderPriority.SurfaceImages || renderable.RenderPriority == RenderPriority.TerrainMappedImages)
{
renderable.Render(drawArgs);
}
}
//绘制RenderPriority.LinePaths和RenderPriority.AtmosphericImages类型的图层
else if (renderable.RenderPriority == priority)
{
renderable.Render(drawArgs);
}
}
/// <summary>
/// 2.绘制星星
/// </summary>
/// <param name="drawArgs"></param>
/// <param name="renderable"></param>
private void RenderStars(DrawArgs drawArgs, RenderableObject renderable)
{
if (renderable is RenderableObjectList)
{
RenderableObjectList rol = (RenderableObjectList)renderable;
for (int i = 0; i < rol.ChildObjects.Count; i++)
{
RenderStars(drawArgs, (RenderableObject)rol.ChildObjects[i]);
}
}
//else if (renderable.Name != null && renderable.Name.Equals("Starfield"))
else if (renderable.Name != null && renderable.Name.Equals("星空"))
{
try
{
renderable.Render(drawArgs);
}
catch (Exception ex)
{
throw new Exception("绘制星星失败！\n" + ex.ToString());
}
}
}