/// <summary>
/// Removes the specified light
/// </summary>
/// <param name="light">Directional light</param>
public void Remove(SceneLightDirectional light)
{
if (this.directionalLights.Contains(light))
{
this.directionalLights.Remove(light);
}
}
/// <summary>
/// Gets if the flare is visible
/// </summary>
/// <param name="light">Key light</param>
/// <param name="eyePosition">Eye position</param>
/// <returns>Returns true if the flare is visible</returns>
private bool IsFlareVisible(SceneLightDirectional light, Vector3 eyePosition)
{
if (this.Scene != null)
{
var frustum = this.Scene.Camera.Frustum;
float maxZ = this.Scene.Camera.FarPlaneDistance;
Vector3 lPositionUnit = eyePosition - light.Direction;
//Is the light into the vision cone?
if (frustum.Contains(lPositionUnit) != ContainmentType.Disjoint)
{
//Calculate the ray from light to position
Vector3 lightPosition = light.GetPosition(maxZ);
Ray ray = new Ray(lightPosition, -light.Direction);
if (!this.Scene.PickNearest(ray, RayPickingParams.Coarse, out var res))
{
return(true);
}
if (this.Scene.PickNearest(ray, RayPickingParams.Perfect, out PickingResult <Triangle> result) &&
Vector3.Distance(lightPosition, eyePosition) > result.Distance)
{
return(false);
}
}
}
return(false);
}
/// <summary>
/// Adds the specified new light to colection
/// </summary>
/// <param name="light">Directional light</param>
public void Add(SceneLightDirectional light)
{
this.directionalLights.Add(light);
}
