/// <summary>
/// Updates the from light view projection
/// </summary>
public override void UpdateFromLightViewProjection(Camera camera, ISceneLight light)
{
if (light is ISceneLightPoint lightPoint)
{
var vp = GetFromPointLightViewProjection(lightPoint);
this.ToShadowMatrix = vp[0];
this.LightPosition = lightPoint.Position;
this.FromLightViewProjectionArray = vp;
}
}
/// <summary>
/// Updates the from light view projection
/// </summary>
public override void UpdateFromLightViewProjection(Camera camera, ISceneLight light)
{
if (light is ISceneLightDirectional lightDirectional)
{
this.MatrixSet.Update(camera, lightDirectional.Direction);
lightDirectional.ToShadowSpace = this.MatrixSet.GetWorldToShadowSpace();
lightDirectional.ToCascadeOffsetX = this.MatrixSet.GetToCascadeOffsetX();
lightDirectional.ToCascadeOffsetY = this.MatrixSet.GetToCascadeOffsetY();
lightDirectional.ToCascadeScale = this.MatrixSet.GetToCascadeScale();
var vp = this.MatrixSet.GetWorldToCascadeProj();
this.ToShadowMatrix = vp[0];
this.LightPosition = this.MatrixSet.GetLigthPosition();
this.FromLightViewProjectionArray = vp;
}
}
/// <summary>
/// Updates the from light view projection
/// </summary>
public override void UpdateFromLightViewProjection(Camera camera, ISceneLight light)
{
if (light is ISceneLightSpot lightSpot)
{
var near = 1f;
var projection = Matrix.PerspectiveFovLH(lightSpot.AngleRadians * 2f, 1f, near, lightSpot.Radius);
var pos = lightSpot.Position;
var look = lightSpot.Position + (lightSpot.Direction * lightSpot.Radius);
var view = Matrix.LookAtLH(pos, look, Vector3.Up);
var vp = view * projection;
this.ToShadowMatrix = vp;
this.LightPosition = lightSpot.Position;
this.FromLightViewProjectionArray = new[] { vp };
}
}
/// <summary> /// Updates the from light view projection /// </summary> public abstract void UpdateFromLightViewProjection(Camera camera, ISceneLight light);
