public OcclusionCullingScreen(IServiceLocator services)
: base(services)
{
_sceneNodes = new List<SceneNode>();
// Create new occlusion buffer with default settings.
OcclusionBuffer = new OcclusionBuffer(GraphicsService);
OcclusionBuffer.ProgressiveShadowCasterCulling = true;
EnableCulling = true;
// Create a second camera for rendering a top-down view of the scene.
var topDownPerspective = new PerspectiveProjection();
topDownPerspective.SetFieldOfView(MathHelper.ToRadians(90), 1, 1, 512);
_topDownCameraNode = new CameraNode(new Camera(topDownPerspective));
_topDownCameraNode.PoseWorld = new Pose(new Vector3F(-10, 120, -10));
_topDownCameraNode.LookAt(new Vector3F(-10, 0, -10), Vector3F.UnitZ);
_sceneQuery = new CustomSceneQuery();
_debugRenderer = new DebugRenderer(GraphicsService, null);
// The DigitalRune Profiler is used to measure execution times.
Profiler.SetFormat("Occlusion.Render", 1e3f, "[ms]");
Profiler.SetFormat("Occlusion.Query", 1e3f, "[ms]");
}
public MyGraphicsScreen(IGraphicsService graphicsService)
: base(graphicsService)
{
_meshRenderer = new MeshRenderer();
var contentManager = ServiceLocator.Current.GetInstance<ContentManager>();
var spriteFont = contentManager.Load<SpriteFont>("SpriteFont1");
_debugRenderer = new DebugRenderer(graphicsService, spriteFont);
Scene = new Scene();
// Add a camera with a perspective projection.
var projection = new PerspectiveProjection();
projection.SetFieldOfView(
ConstantsF.PiOver4,
graphicsService.GraphicsDevice.Viewport.AspectRatio,
0.1f,
100.0f);
CameraNode = new CameraNode(new Camera(projection))
{
Name = "CameraPerspective",
PoseWorld = Pose.FromMatrix(Matrix44F.CreateLookAt(new Vector3F(10, 5, 10), new Vector3F(0, 1, 0), new Vector3F(0, 1, 0)).Inverse),
};
Scene.Children.Add(CameraNode);
}
/// <summary>
/// Creates an perspective projection from a 4x4 transformation matrix.
/// </summary>
/// <param name="matrix">The projection matrix.</param>
/// <returns>The perspective projection.</returns>
public static PerspectiveProjection FromMatrix(Matrix44F matrix)
{
var projection = new PerspectiveProjection();
projection.Set(matrix);
return(projection);
}
public CharacterControllerSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
GraphicsScreen.ClearBackground = true;
GraphicsScreen.BackgroundColor = Color.CornflowerBlue;
// Create a camera.
var projection = new PerspectiveProjection();
projection.SetFieldOfView(
ConstantsF.PiOver4,
GraphicsService.GraphicsDevice.Viewport.AspectRatio,
0.1f,
1000.0f);
_cameraNode = new CameraNode(new Camera(projection));
GraphicsScreen.CameraNode = _cameraNode;
// We use one collision domain that computes collision info for all game objects.
_domain = new CollisionDomain(new CollisionDetection());
// Create collision objects for a test level.
CharacterControllerLevel.Load(_domain);
// Add collision filter:
// The _domain contains a lot of collision objects for obstacles in the level.
// We do not need to compute contacts between these static obstacles. To avoid
// this, the CharacterControllerLevel puts all level collision objects into
// the collision group 1. We add a broad phase collision filter which filters out
// collision checks between objects of collision group 1.
_domain.BroadPhase.Filter = new DelegatePairFilter<CollisionObject>(
pair =>
{
if (pair.First.CollisionGroup == 1 && pair.Second.CollisionGroup == 1)
return false;
return true;
});
// Create character controller.
_character = new CharacterController(_domain);
_character.Position = new Vector3F(0, 0, 1);
// Create the trigger volume.
_triggerVolume = new CollisionObject(
new GeometricObject(new SphereShape(3), new Pose(new Vector3F(-5, 0, 5))))
{
// We do not want to compute detailed contact information (contact points, contact
// normal vectors, etc.). We are only interested if the object touches another object or not.
// Therefore, we set the collision object type to "trigger". Trigger objects are better for
// performance than normal collision objects. Additionally, the character controller should
// be able to walk through the trigger volume. The character controller treats objects as
// solids if it finds contact information (contact positions with contact normal vectors).
Type = CollisionObjectType.Trigger
};
_domain.CollisionObjects.Add(_triggerVolume);
}
public CameraComponent(GameScreen sc)
{
PerspectiveProjection projection = new PerspectiveProjection();
projection.SetFieldOfView(MathHelper.PiOver4,
sc._graphicsService.GraphicsDevice.Viewport.AspectRatio,
0.1f, 1000.0f);
_cameraNode = new CameraNode(new Camera(projection));
_position = new Vector3F(50f, 120.0f, 50f);
_yaw = MathHelper.ToRadians(45.0f);
}
private static PerspectiveProjection GetDefaultProjection()
{
// The default value of the PerspectiveProjection are too big for typical
// projector lights. Therefore, we use our own default value.
const float near = 0.25f;
const float far = 5.0f;
const float aspectRatio = 4.0f / 3.0f;
const float fieldOfViewY = 45.0f * ConstantsF.Pi / 180.0f; // 45°
var projection = new PerspectiveProjection();
projection.SetFieldOfView(fieldOfViewY, aspectRatio, near, far);
return(projection);
}
//--------------------------------------------------------------
#region Methods
//--------------------------------------------------------------
protected override void OnLoad()
{
var graphicsService = _services.GetInstance<IGraphicsService>();
// Define camera projection.
var projection = new PerspectiveProjection();
projection.SetFieldOfView(
ConstantsF.PiOver4,
graphicsService.GraphicsDevice.Viewport.AspectRatio,
0.1f,
1000.0f);
// Create a camera node.
CameraNode = new CameraNode(new Camera(projection));
}
public WindowsPhoneSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.ClearBackground = true;
GraphicsScreen.BackgroundColor = Color.CornflowerBlue;
// Set a fixed camera.
var projection = new PerspectiveProjection();
projection.SetFieldOfView(
MathHelper.ToRadians(30),
GraphicsService.GraphicsDevice.Viewport.AspectRatio,
1f,
1000.0f);
Vector3F cameraTarget = new Vector3F(0, 1, 0);
Vector3F cameraPosition = new Vector3F(0, 12, 0);
Vector3F cameraUpVector = new Vector3F(0, 0, -1);
GraphicsScreen.CameraNode = new CameraNode(new Camera(projection))
{
View = Matrix44F.CreateLookAt(cameraPosition, cameraTarget, cameraUpVector),
};
// We use the accelerometer to control the camera view. The accelerometer registers every
// little change, but we do not want a shaky camera. We can use a low-pass filter to smooth
// the sensor signal.
_lowPassFilter = new LowPassFilter(new Vector3F(0, -1, 0))
{
TimeConstant = 0.15f, // Let's try a time constant of 0.15 seconds.
// When increasing the time constant the camera becomes more stable,
// but also slower.
};
// Enable touch gestures
_originalEnabledGestures = TouchPanel.EnabledGestures;
TouchPanel.EnabledGestures =
GestureType.Tap // Tap is used to drop new bodies.
| GestureType.Flick // Flick creates an explosion.
| GestureType.Hold // Hold to clear the scene.
| GestureType.Pinch; // Pinch can be used to zoom in or out.
InitializePhysics();
}
private void TestClippedProjection()
{
RandomHelper.Random = new Random(1234567);
var p = new PerspectiveProjection();
p.SetOffCenter(-0.1f, 0.2f, -0.1f, 0.1f, 0.1f, 1);
_debugRenderer.DrawViewVolume(p.ViewVolume, new Pose(new Vector3F(0, 2, 0)), Color.Red, true, false);
p.NearClipPlane = new Plane(new Vector3F(-0.1f, +0.1f, 1).Normalized, -0.4f);
PlaneShape.MeshSize = 2;
_debugRenderer.DrawShape(new PlaneShape(p.NearClipPlane.Value), new Pose(new Vector3F(0, 2, 0)), Vector3F.One, Color.Green, false, false);
Matrix44F m = p.ToMatrix44F();
for (int i = 0; i < 100000; i++)
{
Aabb aabb = p.ViewVolume.GetAabb(Pose.Identity);
aabb.Minimum -= new Vector3F(1);
aabb.Maximum += new Vector3F(1);
float x = RandomHelper.Random.NextFloat(aabb.Minimum.X, aabb.Maximum.X);
float y = RandomHelper.Random.NextFloat(aabb.Minimum.Y, aabb.Maximum.Y);
float z = RandomHelper.Random.NextFloat(aabb.Minimum.Z, aabb.Maximum.Z);
//if (RandomHelper.Random.NextBool())
// x = 0;
//else
// y = 0;
Vector4F c = m * new Vector4F(x, y, z, 1);
c /= c.W;
Color color = Color.Orange;
if (c.X < -1 || c.X > 1 || c.Y < -1 || c.Y > 1 || c.Z < 0 || c.Z > 1)
continue;// color = Color.Gray;
_debugRenderer.DrawPoint(new Vector3F(x, y + 2, z), color, false);
}
}
public WpRagdollSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.ClearBackground = true;
GraphicsScreen.BackgroundColor = Color.CornflowerBlue;
// Set a fixed camera.
var projection = new PerspectiveProjection();
projection.SetFieldOfView(
MathHelper.ToRadians(30),
GraphicsService.GraphicsDevice.Viewport.AspectRatio,
1f,
100.0f);
Vector3F cameraTarget = new Vector3F(0, 1, 0);
Vector3F cameraPosition = new Vector3F(0, 12, 0);
Vector3F cameraUpVector = new Vector3F(0, 0, -1);
GraphicsScreen.CameraNode = new CameraNode(new Camera(projection))
{
View = Matrix44F.CreateLookAt(cameraPosition, cameraTarget, cameraUpVector),
};
InitializePhysics();
}
public CameraObject()
{
base.Name = "Camera";
_inputService = ServiceLocator.Current.GetInstance<IInputService>();
var graphicsService = ServiceLocator.Current.GetInstance<IGraphicsService>();
var gameObjectManager = ServiceLocator.Current.GetInstance<IGameObjectService>();
var screen = ((BasicScreen)graphicsService.Screens["Default"]);
//_debugRenderer = screen.DebugRenderer;
PerspectiveProjection projection = new PerspectiveProjection();
projection.SetFieldOfView(Microsoft.Xna.Framework.MathHelper.PiOver4,
graphicsService.GraphicsDevice.Viewport.AspectRatio,
0.1f, 1000.0f);
_cameraNode = new CameraNode(new Camera(projection));
screen.Scene.Children.Add(_cameraNode);
screen.ActiveCamera = _cameraNode;
ResetCamera();
View = _cameraNode.View.ToXna();
Projection = _cameraNode.Camera.Projection.ToXna();
}
private static PerspectiveProjection GetDefaultProjection()
{
// The default value of the PerspectiveProjection are too big for typical
// projector lights. Therefore, we use our own default value.
const float near = 0.25f;
const float far = 5.0f;
const float aspectRatio = 4.0f / 3.0f;
const float fieldOfViewY = 45.0f * ConstantsF.Pi / 180.0f; // 45°
var projection = new PerspectiveProjection();
projection.SetFieldOfView(fieldOfViewY, aspectRatio, near, far);
return projection;
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
var contentManager = _services.GetInstance<ContentManager>();
if (_type == 1)
{
// A simple cube.
RigidBody = new RigidBody(new BoxShape(1, 1, 1));
ModelNode = contentManager.Load<ModelNode>("RustyCube/RustyCube").Clone();
}
else if (_type == 2)
{
// Another simple cube.
RigidBody = new RigidBody(new BoxShape(1, 1, 1));
ModelNode = contentManager.Load<ModelNode>("MetalGrateBox/MetalGrateBox").Clone();
}
else if (_type == 3)
{
// A TV-like box.
RigidBody = new RigidBody(new BoxShape(1, 0.6f, 0.8f)) { UserData = "TV" };
ModelNode = contentManager.Load<ModelNode>("TVBox/TVBox");
if (ModelNode.Children.OfType<LightNode>().Count() == 0)
{
// This is the first time the "TVBox" is loaded.
// Add a projector light to the model that projects the TV screen. The
// TV screen is the emissive part of the TV mesh.
var meshNode = ModelNode.Children.OfType<MeshNode>().First();
var material = meshNode.Mesh.Materials.First(m => m.Name == "TestCard");
// Get texture from material.
// Note: In XNA the effect parameter type is Texture. In MonoGame it is Texture2D.
Texture2D texture;
EffectParameterBinding parameterBinding = material["Material"].ParameterBindings["EmissiveTexture"];
if (parameterBinding is EffectParameterBinding<Texture>)
texture = (Texture2D)((EffectParameterBinding<Texture>)parameterBinding).Value;
else
texture = ((EffectParameterBinding<Texture2D>)parameterBinding).Value;
var projection = new PerspectiveProjection();
projection.Near = 0.55f;
projection.Far = 3.0f;
projection.SetFieldOfView(MathHelper.ToRadians(60), 0.76f / 0.56f);
var projectorLight = new ProjectorLight(texture, projection);
projectorLight.Attenuation = 4;
var projectorLightNode = new LightNode(projectorLight);
projectorLightNode.LookAt(new Vector3F(0, 0.2f, 0), Vector3F.Zero, Vector3F.UnitZ);
// Attach the projector light to the model.
ModelNode.Children.Add(projectorLightNode);
}
ModelNode = ModelNode.Clone();
}
else if (_type == 4)
{
// A "magic" sphere with a colored point light.
RigidBody = new RigidBody(new SphereShape(0.25f));
ModelNode = contentManager.Load<ModelNode>("MagicSphere/MagicSphere");
if (ModelNode.Children.OfType<LightNode>().Count() == 0)
{
// This is the first time the "MagicSphere" is loaded.
// Change the size of the sphere.
var meshNode = ModelNode.Children.OfType<MeshNode>().First();
meshNode.ScaleLocal = new Vector3F(0.5f);
// Disable shadows. (The sphere acts as a light source.)
meshNode.CastsShadows = false;
// Add a point light.
var pointLight = new PointLight
{
Color = new Vector3F(1, 1, 1),
DiffuseIntensity = 4,
SpecularIntensity = 4,
Range = 3,
Attenuation = 1,
Texture = contentManager.Load<TextureCube>("MagicSphere/ColorCube"),
};
var pointLightNode = new LightNode(pointLight)
{
// The point light uses shadow mapping to cast an omnidirectional shadow.
Shadow = new CubeMapShadow
{
PreferredSize = 64,
}
};
ModelNode.Children.Add(pointLightNode);
}
ModelNode = ModelNode.Clone();
}
else if (_type == 5)
{
// A sphere of glass (or "bubble").
RigidBody = new RigidBody(new SphereShape(0.3f));
ModelNode = contentManager.Load<ModelNode>("Bubble/Bubble").Clone();
ModelNode.GetDescendants().OfType<MeshNode>().First().ScaleLocal = new Vector3F(0.3f);
}
else if (_type == 6)
{
// A rusty barrel with multiple levels of detail (LODs).
RigidBody = new RigidBody(new CylinderShape(0.35f, 1));
ModelNode = contentManager.Load<ModelNode>("Barrel/Barrel").Clone();
}
else
{
// A cube consisting of a frame and transparent sides.
RigidBody = new RigidBody(new BoxShape(1, 1, 1));
ModelNode = contentManager.Load<ModelNode>("GlassBox/GlassBox").Clone();
}
SampleHelper.EnablePerPixelLighting(ModelNode);
// Set a random pose.
var randomPosition = new Vector3F(
RandomHelper.Random.NextFloat(-10, 10),
RandomHelper.Random.NextFloat(2, 5),
RandomHelper.Random.NextFloat(-20, 0));
RigidBody.Pose = new Pose(randomPosition, RandomHelper.Random.NextQuaternionF());
ModelNode.PoseWorld = RigidBody.Pose;
// Add rigid body to physics simulation and model to scene.
var simulation = _services.GetInstance<Simulation>();
simulation.RigidBodies.Add(RigidBody);
var scene = _services.GetInstance<IScene>();
scene.Children.Add(ModelNode);
}
public SceneCaptureCubeSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
// Create a graphics screen. This screen has to call the SceneCaptureRenderer
// to handle the SceneCaptureNodes!
_graphicsScreen = new DeferredGraphicsScreen(Services) { DrawReticle = true };
GraphicsService.Screens.Insert(0, _graphicsScreen);
GameObjectService.Objects.Add(new DeferredGraphicsOptionsObject(Services));
Services.Register(typeof(DebugRenderer), null, _graphicsScreen.DebugRenderer);
Services.Register(typeof(IScene), null, _graphicsScreen.Scene);
// Add gravity and damping to the physics Simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a custom game object which controls the camera.
var cameraGameObject = new CameraObject(Services);
GameObjectService.Objects.Add(cameraGameObject);
_graphicsScreen.ActiveCameraNode = cameraGameObject.CameraNode;
// More standard objects.
GameObjectService.Objects.Add(new GrabObject(Services));
GameObjectService.Objects.Add(new ObjectCreatorObject(Services));
//GameObjectService.Objects.Add(new StaticSkyObject(Services));
GameObjectService.Objects.Add(new DynamicSkyObject(Services, true, false, true));
GameObjectService.Objects.Add(new GroundObject(Services));
GameObjectService.Objects.Add(new DudeObject(Services));
GameObjectService.Objects.Add(new DynamicObject(Services, 1));
GameObjectService.Objects.Add(new DynamicObject(Services, 2));
GameObjectService.Objects.Add(new DynamicObject(Services, 5));
GameObjectService.Objects.Add(new DynamicObject(Services, 6));
GameObjectService.Objects.Add(new DynamicObject(Services, 7));
GameObjectService.Objects.Add(new FogObject(Services) { AttachToCamera = true });
GameObjectService.Objects.Add(new LavaBallsObject(Services));
// Add a few palm trees.
Random random = new Random(12345);
for (int i = 0; i < 10; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-3, -8), 0, random.NextFloat(0, -5));
Matrix33F orientation = Matrix33F.CreateRotationY(random.NextFloat(0, ConstantsF.TwoPi));
float scale = random.NextFloat(0.5f, 1.2f);
GameObjectService.Objects.Add(new StaticObject(Services, "PalmTree/palm_tree", scale, new Pose(position, orientation)));
}
// Load the "Bubble" mesh and place it at a fixed position in the scene.
var modelNode = ContentManager.Load<ModelNode>("Bubble/Bubble");
var meshNode = modelNode.GetDescendants().OfType<MeshNode>().First().Clone();
meshNode.PoseWorld = new Pose(new Vector3F(0, 1, 0));
_graphicsScreen.Scene.Children.Add(meshNode);
// Surface of the mesh should reflect the scene in real-time. Reflections are
// created using environment mapping: The scene is rendered into a cube map,
// which is then applied to the mesh.
// To render the scene into a cube map, we need to define a CameraNode and a
// SceneCaptureNode: The CameraNode defines the point from where the scene is
// captured. The SceneCaptureNode defines where and in which format the captured
// image is needed.
// Attach a camera to the center of the mesh.
var projection = new PerspectiveProjection();
projection.SetFieldOfView(ConstantsF.PiOver2, 1, 0.1f, 20);
var captureCameraNode = new CameraNode(new Camera(projection));
meshNode.Children = new SceneNodeCollection { captureCameraNode };
// Attach a SceneCaptureNode with a cube map render target to the mesh.
var renderToTexture = new RenderToTexture
{
Texture = new RenderTargetCube(
GraphicsService.GraphicsDevice,
256,
true,
SurfaceFormat.Color,
DepthFormat.None),
};
var sceneCaptureNode = new SceneCaptureNode(renderToTexture)
{
Shape = meshNode.Shape,
CameraNode = captureCameraNode,
};
meshNode.Children.Add(sceneCaptureNode);
// The bubble model uses a special effect and is rendered in the "AlphaBlend"
// render pass. Let's modify the effect parameters to use the created cube map
// as the reflection map of the bubble.
var effectBinding = meshNode.Mesh.Materials[0]["AlphaBlend"];
effectBinding.Set("ReflectionStrength", 0.5f);
effectBinding.Set("RefractionStrength", 0.0f);
effectBinding.Set("FresnelBias", 1.0f);
effectBinding.Set("BlendMode", 1.0f);
effectBinding.Set("Alpha", 1.0f);
effectBinding.Set("CustomEnvironmentMap", (TextureCube)renderToTexture.Texture);
}
private void InitializeGraphicsScreen()
{
Debug.Assert(GraphicsScreens.Count == 0, "Reset graphics screens before calling InitializeGraphicsScreen().");
var services = Document.Editor.Services;
var graphicsService = services.GetInstance<IGraphicsService>().ThrowIfMissing();
// Initialize graphics screens.
var graphicsScreen = UseDeferredLighting
? (GraphicsScreen)new DeferredGraphicsScreen(services)
: new BasicGraphicsScreen(services);
GraphicsScreens.Add(graphicsScreen);
GraphicsScreens.Add(new DebugGraphicsScreen(services));
// Add default lighting.
var scene = UseDeferredLighting
? ((DeferredGraphicsScreen)graphicsScreen).Scene
: ((BasicGraphicsScreen)graphicsScreen).Scene;
GameHelper.AddLights(scene);
// Add a ground plane (useful for orientation and to check model shadows).
if (_groundModelNode == null)
{
var content = services.GetInstance<ContentManager>().ThrowIfMissing();
_groundModelNode = content.Load<ModelNode>("DigitalRune.Editor.Game/Models/Misc/GroundPlane/GroundPlane").Clone();
}
_groundModelNode.IsEnabled = ShowGroundPlane;
scene.Children.Add(_groundModelNode);
// Add camera.
if (CameraNode == null)
{
var projection = new PerspectiveProjection();
projection.SetFieldOfView(
ConstantsF.PiOver4,
graphicsService.GraphicsDevice.Viewport.AspectRatio,
0.1f,
10000.0f);
CameraNode = new CameraNode(new Camera(projection)) { Name = "CameraPerspective", };
}
if (UseDeferredLighting)
((DeferredGraphicsScreen)graphicsScreen).ActiveCameraNode = CameraNode;
else
((BasicGraphicsScreen)graphicsScreen).CameraNode = CameraNode;
}
private bool _cullingEnabled = true; // True to use frustum culling. False to disable frustum culling.
public FrustumCullingSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.ClearBackground = true;
GraphicsScreen.BackgroundColor = Color.CornflowerBlue;
// The top-down camera.
var orthographicProjection = new OrthographicProjection();
orthographicProjection.Set(
LevelSize * 1.1f * GraphicsService.GraphicsDevice.Viewport.AspectRatio,
LevelSize * 1.1f,
1,
10000f);
var topDownCamera = new Camera(orthographicProjection);
_topDownCameraNode = new CameraNode(topDownCamera)
{
View = Matrix44F.CreateLookAt(new Vector3F(0, 1000, 0), new Vector3F(0, 0, 0), -Vector3F.UnitZ),
};
// The perspective camera moving through the scene.
var perspectiveProjection = new PerspectiveProjection();
perspectiveProjection.SetFieldOfView(
MathHelper.ToRadians(45),
GraphicsService.GraphicsDevice.Viewport.AspectRatio,
1,
500);
var sceneCamera = new Camera(perspectiveProjection);
_sceneCameraNode = new CameraNode(sceneCamera);
// Initialize collision detection.
// We use one collision domain that manages all objects.
_domain = new CollisionDomain(new CollisionDetection())
{
// We exchange the default broad phase with a DualPartition. The DualPartition
// has special support for frustum culling.
BroadPhase = new DualPartition<CollisionObject>(),
};
// Create a lot of random objects and add them to the collision domain.
RandomHelper.Random = new Random(12345);
for (int i = 0; i < NumberOfObjects; i++)
{
// A real scene consists of a lot of complex objects such as characters, vehicles,
// buildings, lights, etc. When doing frustum culling we need to test each objects against
// the viewing frustum. If it intersects with the viewing frustum, the object is visible
// from the camera's point of view. However, in practice we do not test the exact object
// against the viewing frustum. Each objects is approximated by a simpler shape. In our
// example, we assume that each object is approximated with an oriented bounding box.
// (We could also use an other shape, such as a bounding sphere.)
// Create a random box.
Shape randomShape = new BoxShape(RandomHelper.Random.NextVector3F(1, 10));
// Create a random position.
Vector3F randomPosition;
randomPosition.X = RandomHelper.Random.NextFloat(-LevelSize / 2, LevelSize / 2);
randomPosition.Y = RandomHelper.Random.NextFloat(0, 2);
randomPosition.Z = RandomHelper.Random.NextFloat(-LevelSize / 2, LevelSize / 2);
// Create a random orientation.
QuaternionF randomOrientation = RandomHelper.Random.NextQuaternionF();
// Create object and add it to collision domain.
var geometricObject = new GeometricObject(randomShape, new Pose(randomPosition, randomOrientation));
var collisionObject = new CollisionObject(geometricObject)
{
CollisionGroup = 0,
};
_domain.CollisionObjects.Add(collisionObject);
}
// Per default, the collision domain computes collision between all objects.
// In this sample we do not need this information and disable it with a collision
// filter.
// In a real application, we would use this collision information for rendering,
// for example, to find out which lights overlap with which meshes, etc.
var filter = new CollisionFilter();
// Disable collision between objects in collision group 0.
filter.Set(0, 0, false);
_domain.CollisionDetection.CollisionFilter = filter;
// Start with the scene camera.
GraphicsScreen.CameraNode = _sceneCameraNode;
// We will collect a few statistics for debugging.
Profiler.SetFormat("NoCull", 1000, "Time in ms to submit DebugRenderer draw jobs without frustum culling.");
Profiler.SetFormat("WithCull", 1000, "Time in ms to submit DebugRenderer draw jobs with frustum culling.");
}
/// <summary>
/// Creates an perspective projection from a 4x4 transformation matrix.
/// </summary>
/// <param name="matrix">The projection matrix.</param>
/// <returns>The perspective projection.</returns>
public static PerspectiveProjection FromMatrix(Matrix44F matrix)
{
var projection = new PerspectiveProjection();
projection.Set(matrix);
return projection;
}
/// <summary>
/// Renders the environment maps for the image-based lights.
/// </summary>
/// <remarks>
/// This method uses the current DeferredGraphicsScreen to render new environment maps at
/// runtime. The DeferredGraphicsScreen has a SceneCaptureRenderer which we can use to
/// capture environment maps of the current scene.
/// To capture new environment maps the flag _updateEnvironmentMaps must be set to true.
/// When this flag is set, SceneCaptureNodes are added to the scene. When the graphics
/// screen calls the SceneCaptureRenderer the next time, the new environment maps will be
/// captured.
/// The flag _updateEnvironmentMaps remains true until the new environment maps are available.
/// This method checks the SceneCaptureNode.LastFrame property to check if new environment maps
/// have been computed. Usually, the environment maps will be available in the next frame.
/// (However, the XNA Game class can skip graphics rendering if the game is running slowly.
/// Then we would have to wait more than 1 frame.)
/// When environment maps are being rendered, the image-based lights are disabled to capture
/// only the scene with ambient and directional lights. Dynamic objects are also disabled
/// to capture only the static scene.
/// </remarks>
private void UpdateEnvironmentMaps()
{
if (!_updateEnvironmentMaps)
return;
// One-time initializations:
if (_sceneCaptureNodes[0] == null)
{
// Create cube maps and scene capture nodes.
// (Note: A cube map size of 256 is enough for surfaces with a specular power
// in the range [0, 200000].)
for (int i = 0; i < _sceneCaptureNodes.Length; i++)
{
var renderTargetCube = new RenderTargetCube(
GraphicsService.GraphicsDevice,
256,
true,
SurfaceFormat.Color,
DepthFormat.None);
var renderToTexture = new RenderToTexture { Texture = renderTargetCube };
var projection = new PerspectiveProjection();
projection.SetFieldOfView(ConstantsF.PiOver2, 1, 1, 100);
_sceneCaptureNodes[i] = new SceneCaptureNode(renderToTexture)
{
CameraNode = new CameraNode(new Camera(projection))
{
PoseWorld = _lightNodes[i].PoseWorld,
},
};
_imageBasedLights[i].Texture = renderTargetCube;
}
// We use a ColorEncoder to encode a HDR image in a normal Color texture.
_colorEncoder = new ColorEncoder(GraphicsService)
{
SourceEncoding = ColorEncoding.Rgb,
TargetEncoding = ColorEncoding.Rgbm,
};
// The SceneCaptureRenderer has a render callback which defines what is rendered
// into the scene capture render targets.
_graphicsScreen.SceneCaptureRenderer.RenderCallback = context =>
{
var graphicsDevice = GraphicsService.GraphicsDevice;
var renderTargetPool = GraphicsService.RenderTargetPool;
// Get scene nodes which are visible by the current camera.
CustomSceneQuery sceneQuery = context.Scene.Query<CustomSceneQuery>(context.CameraNode, context);
// The final image has to be rendered into this render target.
var ldrTarget = context.RenderTarget;
// Use an intermediate HDR render target with the same resolution as the final target.
var format = new RenderTargetFormat(ldrTarget)
{
SurfaceFormat = SurfaceFormat.HdrBlendable,
DepthStencilFormat = DepthFormat.Depth24Stencil8
};
var hdrTarget = renderTargetPool.Obtain2D(format);
graphicsDevice.SetRenderTarget(hdrTarget);
context.RenderTarget = hdrTarget;
// Render scene (without post-processing, without lens flares, no debug rendering, no reticle).
_graphicsScreen.RenderScene(sceneQuery, context, false, false, false, false);
// Convert the HDR image to RGBM image.
context.SourceTexture = hdrTarget;
context.RenderTarget = ldrTarget;
_colorEncoder.Process(context);
context.SourceTexture = null;
// Clean up.
renderTargetPool.Recycle(hdrTarget);
context.RenderTarget = ldrTarget;
};
}
if (_sceneCaptureNodes[0].Parent == null)
{
// Add the scene capture nodes to the scene.
for (int i = 0; i < _sceneCaptureNodes.Length; i++)
_graphicsScreen.Scene.Children.Add(_sceneCaptureNodes[i]);
// Remember the old time stamp of the nodes.
_oldEnvironmentMapTimeStamp = _sceneCaptureNodes[0].LastFrame;
// Disable all lights except ambient and directional lights.
// We do not capture the image-based lights or any other lights (e.g. point lights)
// in the cube map.
foreach (var lightNode in _graphicsScreen.Scene.GetDescendants().OfType<LightNode>())
lightNode.IsEnabled = (lightNode.Light is AmbientLight) || (lightNode.Light is DirectionalLight);
// Disable dynamic objects.
foreach (var node in _graphicsScreen.Scene.GetDescendants())
if (node is MeshNode || node is LodGroupNode)
if (!node.IsStatic)
node.IsEnabled = false;
}
else
{
// The scene capture nodes are part of the scene. Check if they have been
// updated.
if (_sceneCaptureNodes[0].LastFrame != _oldEnvironmentMapTimeStamp)
{
// We have new environment maps. Restore the normal scene.
for (int i = 0; i < _sceneCaptureNodes.Length; i++)
_graphicsScreen.Scene.Children.Remove(_sceneCaptureNodes[i]);
_updateEnvironmentMaps = false;
foreach (var lightNode in _graphicsScreen.Scene.GetDescendants().OfType<LightNode>())
lightNode.IsEnabled = true;
foreach (var node in _graphicsScreen.Scene.GetDescendants())
if (node is MeshNode || node is LodGroupNode)
if (!node.IsStatic)
node.IsEnabled = true;
}
}
}
public FacialAnimationSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
_graphicsScreen = new DeferredGraphicsScreen(Services) { DrawReticle = false };
GraphicsService.Screens.Insert(0, _graphicsScreen);
Services.Register(typeof(DebugRenderer), null, _graphicsScreen.DebugRenderer);
Services.Register(typeof(IScene), null, _graphicsScreen.Scene);
// Add a game object which adds some GUI controls for the deferred graphics
// screen to the Options window.
GameObjectService.Objects.Add(new DeferredGraphicsOptionsObject(Services));
// Use a fixed camera.
var projection = new PerspectiveProjection();
projection.SetFieldOfView(
ConstantsF.PiOver4,
GraphicsService.GraphicsDevice.Viewport.AspectRatio,
0.1f,
10);
var cameraNode = new CameraNode(new Camera(projection));
cameraNode.LookAt(new Vector3F(0.15f, 0.15f, 0.5f), new Vector3F(0.1f, 0.15f, 0), Vector3F.Up);
_graphicsScreen.Scene.Children.Add(cameraNode);
_graphicsScreen.ActiveCameraNode = cameraNode;
// Lighting setup:
var keyLight = new LightNode(new Spotlight { DiffuseIntensity = 0.6f, SpecularIntensity = 0.4f });
keyLight.LookAt(new Vector3F(-2, 2, 2), new Vector3F(), Vector3F.Up);
_graphicsScreen.Scene.Children.Add(keyLight);
var backLight = new LightNode(new Spotlight { DiffuseIntensity = 0.3f, SpecularIntensity = 0.3f });
backLight.LookAt(new Vector3F(1, 0.5f, -2), new Vector3F(), Vector3F.Up);
_graphicsScreen.Scene.Children.Add(backLight);
var fillLight = new LightNode(new AmbientLight { HemisphericAttenuation = 1, Intensity = 0.1f });
_graphicsScreen.Scene.Children.Add(fillLight);
// The scene does not have a proper background. That's why the exposure is a
// bit off. --> Reduce the max exposure.
var hdrFilter = _graphicsScreen.PostProcessors.OfType<HdrFilter>().First();
hdrFilter.MaxExposure = 6;
// Load the customized "Sintel" model (original: Durian Open Movie Project - http://www.sintel.org/).
var model = ContentManager.Load<ModelNode>("Sintel/Sintel-Head").Clone();
model.PoseWorld = new Pose(new Vector3F(0, 0, 0), Matrix33F.CreateRotationY(MathHelper.ToRadians(10)) * Matrix33F.CreateRotationX(-MathHelper.ToRadians(90)));
_graphicsScreen.Scene.Children.Add(model);
// The model consists of a root node and a mesh node.
// ModelNode "Sintel-Head"
// MeshNode "Sintel"
_sintel = (MeshNode)model.Children[0];
// The model contains two skeletal animations:
// - "MOUTH-open" is just a single frame.
// - "Test" is a short animation (250 frames).
// In the Options window, we will add a slider to move the jaw.
// Slider.Value = 0 ... mouth closed (default)
_mouthClosedPose = SkeletonPose.Create(_sintel.Mesh.Skeleton);
// Slider.Value = 1 ... mouth open (copied from the "MOUTH-open" animation)
SkeletonKeyFrameAnimation mouthOpen = _sintel.Mesh.Animations["MOUTH-open"];
_mouthOpenPose = SkeletonPose.Create(_sintel.Mesh.Skeleton);
mouthOpen.GetValue(TimeSpan.Zero, ref _mouthOpenPose, ref _mouthOpenPose, ref _mouthOpenPose);
// Turn the "Test" animation into an endless loop.
_skeletalAnimation = new AnimationClip<SkeletonPose>(_sintel.Mesh.Animations["Test"])
{
Duration = TimeSpan.MaxValue,
LoopBehavior = LoopBehavior.Cycle
};
// Mesh has several morph targets for facial animation, which are imported
// automatically via the content pipeline. Unfortunately, the XNA content
// pipeline cannot import morph target animations automatically.
// In this demo, we will create a morph target animation in code.
_morphingAnimation = CreateMorphingAnimation();
CreateGuiControls();
}