/// <summary>
/// Draws the specified object shadows
/// </summary>
/// <param name="graphics">Graphics</param>
/// <param name="context">Context</param>
/// <param name="c">Scene object</param>
private void DrawShadows(Graphics graphics, DrawContextShadows context, SceneObject c)
{
graphics.SetRasterizerShadowMapping();
graphics.SetDepthStencilShadowMapping();
if (c.AlphaEnabled)
{
graphics.SetBlendTransparent();
}
else
{
graphics.SetBlendDefault();
}
c.Get <IDrawable>().DrawShadows(context);
}
/// <summary>
/// Gets if the specified object is not culled by the cull index
/// </summary>
/// <param name="c">Scene object</param>
/// <param name="cullIndex">Cull index</param>
/// <returns>Returns true if the object is not culled</returns>
private bool IsVisible(SceneObject c, int cullIndex)
{
if (!c.Is <Drawable>())
{
return(false);
}
var cull = c.Get <ICullable>();
if (cull != null)
{
return(!this.cullManager.GetCullValue(cullIndex, cull).Culled);
}
return(true);
}
/// <summary>
/// Draws an transparent object
/// </summary>
/// <param name="context">Drawing context</param>
/// <param name="c">Component</param>
protected virtual void DrawTransparent(DrawContext context, SceneObject c)
{
var graphics = this.Game.Graphics;
Counters.MaxInstancesPerFrame += c.Count;
graphics.SetRasterizerDefault();
this.SetBlendStateTransparent(context);
if (c.DepthEnabled)
{
graphics.SetDepthStencilZEnabled();
}
else
{
graphics.SetDepthStencilZDisabled();
}
c.Get <IDrawable>().Draw(context);
}
/// <summary>
/// Sorts an object list by distance to culling point of view
/// </summary>
/// <param name="c1">Scene object one</param>
/// <param name="c2">Scene object two</param>
/// <param name="cullIndex">Cull index</param>
/// <returns></returns>
private int Sort(SceneObject c1, SceneObject c2, int cullIndex)
{
int res = c1.DepthEnabled.CompareTo(c2.DepthEnabled);
if (res == 0)
{
var cull1 = c1.Get <ICullable>();
var cull2 = c2.Get <ICullable>();
var d1 = cull1 != null?this.cullManager.GetCullValue(cullIndex, cull1).Distance : float.MaxValue;
var d2 = cull2 != null?this.cullManager.GetCullValue(cullIndex, cull2).Distance : float.MaxValue;
res = -d1.CompareTo(d2);
}
if (res == 0)
{
res = c1.Order.CompareTo(c2.Order);
}
return(res);
}
/// <summary>
/// Sorting transparent list comparer
/// </summary>
/// <param name="index">Cull index</param>
/// <param name="c1">First component</param>
/// <param name="c2">Second component</param>
/// <returns>Returns sorting order (far first)</returns>
protected virtual int SortTransparents(int index, SceneObject c1, SceneObject c2)
{
int res = c1.DepthEnabled.CompareTo(c2.DepthEnabled);
if (res == 0)
{
var cull1 = c1.Get <ICullable>();
var cull2 = c2.Get <ICullable>();
var d1 = cull1 != null?this.cullManager.GetCullValue(index, cull1).Distance : float.MaxValue;
var d2 = cull2 != null?this.cullManager.GetCullValue(index, cull2).Distance : float.MaxValue;
res = -d1.CompareTo(d2);
}
if (res == 0)
{
res = -c1.Order.CompareTo(c2.Order);
}
return(-res);
}
