private void Core_OnUpdateLightSource(object sender, ShadowMapCore.UpdateLightSourceEventArgs e)
{
CameraCore camera = LightCamera ?? null;
if (LightCamera == null)
{
var lights = e.Context.RenderHost.PerFrameLights.Take(Constants.MaxLights);
foreach (var light in lights)
{
if (light.LightType == LightType.Directional)
{
var dlight = light.RenderCore as DirectionalLightCore;
var dir = Vector3.TransformNormal(dlight.Direction, dlight.ModelMatrix).Normalized();
if (AutoCoverCompleteScene)
{
if (sceneChanged || e.Context.UpdateSceneGraphRequested || IsSceneDynamic)
{
sceneChanged = false;
var boundingBox = FindSceneBound(e.Context.RenderHost.PerFrameOpaqueNodes);
if (!CreateCameraFromBound(ref boundingBox, ref dir))
{
SetOrthoCameraParameters(ref dir);
}
}
}
else
{
SetOrthoCameraParameters(ref dir);
}
camera = orthoCamera;
break;
}
else if (light.LightType == LightType.Spot)
{
var splight = light.RenderCore as SpotLightCore;
persCamera.Position = (splight.Position + splight.ModelMatrix.Row4.ToVector3());
var look = Vector3.TransformNormal(splight.Direction, splight.ModelMatrix);
persCamera.LookDirection = look;
persCamera.FarPlaneDistance = (float)splight.Range;
persCamera.FieldOfView = (float)splight.OuterAngle;
persCamera.UpDirection = Vector3.UnitZ;
camera = persCamera;
break;
}
}
}
if (camera == null)
{
shadowCore.FoundLightSource = false;
}
else
{
shadowCore.FoundLightSource = true;
shadowCore.LightView = camera.CreateViewMatrix();
shadowCore.LightProjection = camera.CreateProjectionMatrix(shadowCore.Width / shadowCore.Height);
}
}
private void Core_OnUpdateLightSource(object sender, ShadowMapCore.UpdateLightSourceEventArgs e)
{
CameraCore camera = LightCamera ?? null;
if (LightCamera == null)
{
var lights = e.Context.RenderHost.PerFrameLights.Take(Constants.MaxLights);
foreach (var light in lights)
{
if (light.LightType == LightType.Directional)
{
var dlight = light.RenderCore as DirectionalLightCore;
var dir = Vector4.Transform(dlight.Direction.ToVector4(0), dlight.ModelMatrix).Normalized() * distance;
var pos = -dir;
orthoCamera.LookDirection = new Vector3(dir.X, dir.Y, dir.Z);
orthoCamera.Position = new Vector3(pos.X, pos.Y, pos.Z);
orthoCamera.UpDirection = Vector3.UnitZ;
orthoCamera.Width = orthoWidth;
camera = orthoCamera;
break;
}
else if (light.LightType == LightType.Spot)
{
var splight = light.RenderCore as SpotLightCore;
persCamera.Position = (splight.Position + splight.ModelMatrix.Row4.ToVector3());
var look = Vector4.Transform(splight.Direction.ToVector4(0), splight.ModelMatrix);
persCamera.LookDirection = new Vector3(look.X, look.Y, look.Z);
persCamera.FarPlaneDistance = (float)splight.Range;
persCamera.FieldOfView = (float)splight.OuterAngle;
persCamera.UpDirection = Vector3.UnitZ;
camera = persCamera;
break;
}
}
}
if (camera == null)
{
shadowCore.FoundLightSource = false;
}
else
{
shadowCore.FoundLightSource = true;
shadowCore.LightViewProjectMatrix = camera.CreateViewMatrix() * camera.CreateProjectionMatrix(shadowCore.Width / shadowCore.Height);
}
}
/// <summary>
/// Obtains the view transform matrix for a camera. (see page 327)
/// </summary>
/// <param name="camera">
/// Camera to obtain the ViewMatrix for
/// </param>
/// <returns>
/// A Matrix object with the camera view transform matrix, or a Matrix with all zeros if the "camera" is null.
/// </returns>
public static Matrix GetViewMatrix(this CameraCore camera)
{
return(camera.CreateViewMatrix());
}