public ClosedFormIKSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
// Create the IK solver. The ClosedFormIKSolver uses an analytic solution to compute
// IK for arbitrary long bone chains. It does not support bone rotation limits.
_ikSolver = new ClosedFormIKSolver
{
SkeletonPose = _meshNode.SkeletonPose,
// The chain starts at the upper arm.
RootBoneIndex = 13,
// The chain ends at the hand bone.
TipBoneIndex = 15,
// The offset from the hand center to the hand origin.
TipOffset = new Vector3F(0.1f, 0, 0),
};
}
public PassiveRagdollSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.DrawReticle = true;
// Add game objects which allow to shoot balls and grab rigid bodies.
_ballShooterObject = new BallShooterObject(Services) { Speed = 10 };
GameObjectService.Objects.Add(_ballShooterObject);
_grabObject = new GrabObject(Services);
GameObjectService.Objects.Add(_grabObject);
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
// Create a ragdoll for the Dude model.
_ragdoll = new Ragdoll();
DudeRagdollCreator.Create(_meshNode.SkeletonPose, _ragdoll, Simulation, 0.571f);
// Set the world space pose of the whole ragdoll. And copy the bone poses of the
// current skeleton pose.
_ragdoll.Pose = _meshNode.PoseWorld;
_ragdoll.UpdateBodiesFromSkeleton(_meshNode.SkeletonPose);
// Uncomment to disable dynamic movement (for debugging during ragdoll creation):
//foreach (var body in _ragdoll.Bodies)
// if (body != null)
// body.MotionType = MotionType.Kinematic;
// In this sample we use a passive ragdoll where we need joints to hold the
// limbs together and limits to restrict angular movement.
_ragdoll.EnableJoints();
_ragdoll.EnableLimits();
// Set all motors to constraint motors that only use damping. This adds a damping
// effect to all ragdoll limbs.
foreach (RagdollMotor motor in _ragdoll.Motors)
{
if (motor != null)
{
motor.Mode = RagdollMotorMode.Constraint;
motor.ConstraintDamping = 5;
motor.ConstraintSpring = 0;
}
}
_ragdoll.EnableMotors();
// Add rigid bodies and the constraints of the ragdoll to the simulation.
_ragdoll.AddToSimulation(Simulation);
// Add a rigid body.
var box = new RigidBody(new BoxShape(0.4f, 0.4f, 0.4f))
{
Name = "Box",
Pose = new Pose(new Vector3F(0, 3, 0)),
};
Simulation.RigidBodies.Add(box);
}
public CcdIKSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
// Create the IK solver. The CCD method can solve long bone chains with
// limits.
_ikSolver = new CcdIKSolver
{
SkeletonPose = _meshNode.SkeletonPose,
// The chain starts at the upper arm.
RootBoneIndex = 13,
// The chain ends at the hand bone.
TipBoneIndex = 15,
// The offset from the hand center to the hand origin.
TipOffset = new Vector3F(0.1f, 0, 0),
// We can set a bone gain less than 1 to get a "smoother" result in most cases -
// at the cost of more iterations.
//BoneGain = 0.9f,
// This solver uses an iterative method and will make up to 100 iterations if necessary.
NumberOfIterations = 10,
// A method that applies bone limits.
LimitBoneTransforms = LimitBoneTransform,
};
}
public SkeletonMappingSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Get dude model and start animation on the dude.
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_dudeMeshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_dudeMeshNode.PoseLocal = new Pose(new Vector3F(-0.5f, 0, 0), Matrix33F.CreateRotationY(ConstantsF.Pi));
SampleHelper.EnablePerPixelLighting(_dudeMeshNode);
GraphicsScreen.Scene.Children.Add(_dudeMeshNode);
var animations = _dudeMeshNode.Mesh.Animations;
var loopingAnimation = new AnimationClip<SkeletonPose>(animations.Values.First())
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
AnimationService.StartAnimation(loopingAnimation, (IAnimatableProperty)_dudeMeshNode.SkeletonPose);
// Get marine model - do not start any animations on the marine model.
modelNode = ContentManager.Load<ModelNode>("Marine/PlayerMarine");
_marineMeshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_marineMeshNode.PoseLocal = new Pose(new Vector3F(0.5f, 0, 0), Matrix33F.CreateRotationY(ConstantsF.Pi));
SampleHelper.EnablePerPixelLighting(_marineMeshNode);
GraphicsScreen.Scene.Children.Add(_marineMeshNode);
CreateSkeletonMapper();
}
public BoneJiggleSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0), Matrix33F.CreateRotationY(ConstantsF.Pi));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
var animations = _meshNode.Mesh.Animations;
var walkAnimation = new AnimationClip<SkeletonPose>(animations.Values.First())
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
_walkAnimationController = AnimationService.StartAnimation(walkAnimation, (IAnimatableProperty)_meshNode.SkeletonPose);
_walkAnimationController.AutoRecycle();
// Create a BoneJiggler instance for the head bone (bone index 7).
_boneJiggler = new BoneJiggler(_meshNode.SkeletonPose, 7, new Vector3F(1.1f, 0, 0))
{
Spring = 100,
Damping = 3,
};
}
public AttachmentSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Marine/PlayerMarine");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
// Play a looping 'Idle' animation.
var animations = _meshNode.Mesh.Animations;
var idleAnimation = animations["Idle"];
var loopingAnimation = new AnimationClip<SkeletonPose>(idleAnimation)
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
var animationController = AnimationService.StartAnimation(loopingAnimation, (IAnimatableProperty)_meshNode.SkeletonPose);
animationController.UpdateAndApply();
animationController.AutoRecycle();
// Add weapon model to the scene graph under the node of the marine mesh.
_weaponModelNode = ContentManager.Load<ModelNode>("Marine/Weapon/WeaponMachineGun").Clone();
_meshNode.Children = new SceneNodeCollection();
_meshNode.Children.Add(_weaponModelNode);
}
public TwoJointIKSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
// Create the IK solver. The TwoJointIkSolver is usually used for arms and legs.
// it modifies two bones and supports limits for the second bone.
_ikSolver = new TwoJointIKSolver
{
SkeletonPose = _meshNode.SkeletonPose,
// The chain starts at the upper leg.
RootBoneIndex = 54,
// The second bone modified bone is the lower leg.
HingeBoneIndex = 55,
// The chain ends at the foot bone.
TipBoneIndex = 56,
// The direction of the hinge axis (in bone space).
HingeAxis = -Vector3F.UnitZ,
// The hinge limits.
MinHingeAngle = 0,
MaxHingeAngle = ConstantsF.PiOver2,
// The offset from the ankle to the bottom of the foot.
TipOffset = new Vector3F(0.23f, 0, 0),
};
}
public BindPoseSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Load dude model node.
// This model uses the DigitalRune Model Processor. Several XML files (*.drmdl
// and *.drmat) in the folder of dude.fbx define the materials and other properties.
// The DigitalRune Model Processor also imports the animations of the dude model
// and the *.drmdl can be used to specify how animations should be processed in
// the content pipeline.
// The *.drmat files define the used effects and effect parameters. The effects
// must support mesh skinning.
var sharedDudeModelNode = ContentManager.Load<ModelNode>("Dude/Dude");
// Clone the dude model because objects returned by the ContentManager
// are shared instances, and we do not want manipulate or animate this shared instance.
var dudeModelNode = sharedDudeModelNode.Clone();
// The loaded dude model is a scene graph which consists of a ModelNode
// which has a single MeshNode as its child.
_dudeMeshNode = (MeshNode)dudeModelNode.Children[0];
// We could also get the MeshNode by name:
_dudeMeshNode = (MeshNode)dudeModelNode.GetSceneNode("him");
// Or using a more general LINQ query:
_dudeMeshNode = dudeModelNode.GetSubtree().OfType<MeshNode>().First();
// Set the world space position and orientation of the dude.
_dudeMeshNode.PoseLocal = new Pose(new Vector3F(-1f, 0, 0));
// The imported Mesh of the Dude has a Skeleton, which defines the bone hierarchy.
var skeleton = _dudeMeshNode.Mesh.Skeleton;
// The imported MeshNode has a SkeletonPose, which defines the current animation pose
// (transformations of the bones). The default skeleton pose is the bind pose
// where all bone transformations are set to an identity transformation (no scale,
// no rotation, no translation).
var skeletonPose = _dudeMeshNode.SkeletonPose;
// Load the marine model:
var marineModelNode = ContentManager.Load<ModelNode>("Marine/PlayerMarine").Clone();
_marineMeshNode = marineModelNode.GetSubtree().OfType<MeshNode>().First();
_marineMeshNode.PoseLocal = new Pose(new Vector3F(1f, 0, 0));
// Enable per-pixel lighting.
SampleHelper.EnablePerPixelLighting(_dudeMeshNode);
SampleHelper.EnablePerPixelLighting(_marineMeshNode);
// Add the to the scene graph, so that they are drawn by the graphics screen.
// We can add the ModelNodes directly to the scene.
//GraphicsScreen.Scene.Children.Add(dudeModelNode);
//GraphicsScreen.Scene.Children.Add(marineModelNode);
// Alternatively, we can detach the MeshNodes from their parent nodes and
// add them directly to the scene graph. The parent ModelNodes basically empty
// nodes, which are only used to load and group other nodes.
_dudeMeshNode.Parent.Children.Remove(_dudeMeshNode);
GraphicsScreen.Scene.Children.Add(_dudeMeshNode);
_marineMeshNode.Parent.Children.Remove(_marineMeshNode);
GraphicsScreen.Scene.Children.Add(_marineMeshNode);
}
public SkinnedEffectSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
GraphicsScreen.ClearBackground = true;
GraphicsScreen.BackgroundColor = Color.CornflowerBlue;
SetCamera(new Vector3F(1, 1, 3), 0.2f, 0);
// Create a sky mesh and add an instance of this mesh to the scene.
var skyMesh = ProceduralSkyDome.CreateMesh(GraphicsService, ContentManager.Load<Texture2D>("sky"));
_sky = new MeshNode(skyMesh);
_sky.Name = "Sky"; // Always set a name - very useful for debugging!
GraphicsScreen.Scene.Children.Add(_sky);
// Load the skinned model. This model is processed using the DigitalRune Model
// Processor - not the default XNA model processor!
// In the folder that contains dude.fbx, there are several XML files (*.drmdl and *.drmat)
// which define the materials of the model. These material description files are
// automatically processed by the DigitalRune Model Processor. Please browse
// to the content folder and have a look at the *.drmdl and *.drmat files.
var dudeModel = ContentManager.Load<ModelNode>("Dude/Dude");
dudeModel = dudeModel.Clone();
dudeModel.PoseWorld = new Pose(Matrix33F.CreateRotationY(ConstantsF.Pi));
GraphicsScreen.Scene.Children.Add(dudeModel);
// The dude model consists of a single mesh.
var dudeMeshNode = dudeModel.GetSubtree().OfType<MeshNode>().First();
var mesh = dudeMeshNode.Mesh;
/*
// The dude mesh consists of different materials (head, eyes, torso, ...).
// We could change some of the material properties...
foreach (var material in mesh.Materials)
{
// Get all SkinnedEffectBindings which wrap the XNA SkinnedEffect.
// A material can consist of several effects - one effect for each render pass.
// (Per default there is only one render pass called "Default".)
foreach (var effectBinding in material.EffectBindings.OfType<SkinnedEffectBinding>())
{
// We could change effect parameters here, for example:
effectBinding.PreferPerPixelLighting = true;
}
}
*/
// The DigitalRune Model Processor also loads animations.
// Start the first animation of the dude and let it loop forever.
// (We keep the animation controller to be able to stop the animation in
// Dispose() below.)
var timeline = new TimelineClip(mesh.Animations.Values.First())
{
Duration = TimeSpan.MaxValue,
LoopBehavior = LoopBehavior.Cycle,
};
_animationController = AnimationService.StartAnimation(timeline, (IAnimatableProperty)dudeMeshNode.SkeletonPose);
}
public SkeletonManipulationSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(-0.5f, 0, 0));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
}
private void CreateParticleSystem()
{
// Load a sphere model.
var modelNode = ContentManager.Load<ModelNode>("Particles/Sphere");
var meshNode = (MeshNode)modelNode.Children[0];
// Add gravity and damping to the physics simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Create two instances of the sphere model.
_meshNode0 = meshNode.Clone();
GraphicsScreen.Scene.Children.Add(_meshNode0);
_meshNode1 = meshNode.Clone();
GraphicsScreen.Scene.Children.Add(_meshNode1);
// Create a rigid body for the left sphere.
_rigidBody0 = new RigidBody(new SphereShape(0.5f))
{
Pose = new Pose(new Vector3F(-3, 4, 0)),
};
Simulation.RigidBodies.Add(_rigidBody0);
// Create a rigid body for the right sphere. (Sharing the same shape, mass and material.)
_rigidBody1 = new RigidBody(_rigidBody0.Shape, _rigidBody0.MassFrame, _rigidBody0.Material)
{
Pose = new Pose(new Vector3F(3, 4, 0)),
};
Simulation.RigidBodies.Add(_rigidBody1);
// Extract basic triangle mesh from the sphere model.
var triangleMesh = meshNode.Mesh.Submeshes[0].ToTriangleMesh();
// Create a particle system for the left ball. This particle system uses
// ReferenceFrame == ParticleReferenceFrame.World - which is the default for all
// particle systems. Particles are all relative to world space. The particle system pose
// determines the start positions and direction (when the StartPositionEffector and
// StartDirectionEffector are in use). Particles do not move with the particle system.
_particleSystem0 = GlowingMeshEffect.Create(triangleMesh, ContentManager);
_particleSystem0.ReferenceFrame = ParticleReferenceFrame.World;
ParticleSystemService.ParticleSystems.Add(_particleSystem0);
_particleSystemNode0 = new ParticleSystemNode(_particleSystem0);
_meshNode0.Children = new SceneNodeCollection { _particleSystemNode0 };
// Create a particle system for the right ball. This particle system uses
// ReferenceFrame == ParticleReferenceFrame.Local. Particles are all relative to the
// particle system pose. Particles move with the particle system.
_particleSystem1 = GlowingMeshEffect.Create(triangleMesh, ContentManager);
_particleSystem1.ReferenceFrame = ParticleReferenceFrame.Local;
ParticleSystemService.ParticleSystems.Add(_particleSystem1);
_particleSystemNode1 = new ParticleSystemNode(_particleSystem1);
_meshNode1.Children = new SceneNodeCollection { _particleSystemNode1 };
}
public MixingSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Marine/PlayerMarine");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
var animations = _meshNode.Mesh.Animations;
_runAnimation = new AnimationClip<SkeletonPose>(animations["Run"])
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
_idleAnimation = new AnimationClip<SkeletonPose>(animations["Idle"])
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
// Create a 'Shoot' animation that only affects the upper body.
var shootAnimation = animations["Shoot"];
// The SkeletonKeyFrameAnimations allows to set a weight for each bone channel.
// For the 'Shoot' animation, we set the weight to 0 for all bones that are
// not descendants of the second spine bone (bone index 2). That means, the
// animation affects only the upper body bones and is disabled on the lower
// body bones.
for (int i = 0; i < _meshNode.Mesh.Skeleton.NumberOfBones; i++)
{
if (!SkeletonHelper.IsAncestorOrSelf(_meshNode.SkeletonPose, 2, i))
shootAnimation.SetWeight(i, 0);
}
var loopedShootingAnimation = new AnimationClip<SkeletonPose>(shootAnimation)
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
// Start 'Idle' animation.
_idleAnimationController = AnimationService.StartAnimation(_idleAnimation, (IAnimatableProperty)_meshNode.SkeletonPose);
_idleAnimationController.AutoRecycle();
// Start looping the 'Shoot' animation. We use a Compose transition. This will add the
// 'Shoot' animation to the animation composition chain and keeping all other playing
// animations.
// The 'Idle' animation animates the whole skeleton. The 'Shoot' animation replaces
// the 'Idle' animation on the bones of the upper body.
AnimationService.StartAnimation(loopedShootingAnimation,
(IAnimatableProperty)_meshNode.SkeletonPose,
AnimationTransitions.Compose()
).AutoRecycle();
}
public CollisionDetectionOnlyRagdollSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.DrawReticle = true;
SetCamera(new Vector3F(0, 1, 6), 0, 0);
// Add a game object which allows to shoot balls.
_ballShooterObject = new BallShooterObject(Services);
GameObjectService.Objects.Add(_ballShooterObject);
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0), Matrix33F.CreateRotationY(ConstantsF.Pi));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
var animations = _meshNode.Mesh.Animations;
var loopingAnimation = new AnimationClip<SkeletonPose>(animations.Values.First())
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
AnimationService.StartAnimation(loopingAnimation, (IAnimatableProperty)_meshNode.SkeletonPose);
// Create a ragdoll for the Dude model.
_ragdoll = new Ragdoll();
DudeRagdollCreator.Create(_meshNode.SkeletonPose, _ragdoll, Simulation, 0.571f);
// Set the world space pose of the whole ragdoll.
_ragdoll.Pose = _meshNode.PoseWorld;
// And copy the bone poses of the current skeleton pose.
_ragdoll.UpdateBodiesFromSkeleton(_meshNode.SkeletonPose);
foreach (var body in _ragdoll.Bodies)
{
if (body != null)
{
// Set all bodies to kinematic - they should not be affected by forces.
body.MotionType = MotionType.Kinematic;
// Disable collision response.
body.CollisionResponseEnabled = false;
}
}
// In this sample, we do not need joints, limits or motors.
_ragdoll.DisableJoints();
_ragdoll.DisableLimits();
_ragdoll.DisableMotors();
// Add ragdoll rigid bodies to the simulation.
_ragdoll.AddToSimulation(Simulation);
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
var graphicsService = _services.GetInstance<IGraphicsService>();
var gameObjectService = _services.GetInstance<IGameObjectService>();
var content = _services.GetInstance<ContentManager>();
// Check if the game object manager has another ProceduralObject instance.
var otherProceduralObject = gameObjectService.Objects
.OfType<ProceduralObject>()
.FirstOrDefault(o => o != this);
Mesh mesh;
if (otherProceduralObject != null)
{
// This ProceduralObject is not the first. We re-use rigid body data and
// the mesh from the existing instance.
var otherBody = otherProceduralObject._rigidBody;
_rigidBody = new RigidBody(otherBody.Shape, otherBody.MassFrame, otherBody.Material);
mesh = otherProceduralObject._meshNode.Mesh;
}
else
{
// This is the first ProceduralObject instance.
// Create a a new rigid body.
var shape = new MinkowskiSumShape(new GeometricObject(new SphereShape(0.05f)), new GeometricObject(new BoxShape(0.5f, 0.5f, 0.5f)));
_rigidBody = new RigidBody(shape);
// Create a new mesh. See SampleHelper.CreateMesh for more details.
mesh = SampleHelper.CreateMesh(content, graphicsService, _rigidBody.Shape);
mesh.Name = "ProceduralObject";
}
// Create a scene graph node for the mesh.
_meshNode = new MeshNode(mesh);
// 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());
_meshNode.PoseWorld = _rigidBody.Pose;
// Add mesh node to scene graph.
var scene = _services.GetInstance<IScene>();
scene.Children.Add(_meshNode);
// Add rigid body to the physics simulation.
var simulation = _services.GetInstance<Simulation>();
simulation.RigidBodies.Add(_rigidBody);
}
public CompressionSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
SampleHelper.EnablePerPixelLighting(modelNode);
_meshNodeUncompressed = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNodeUncompressed.PoseLocal = new Pose(new Vector3F(-0.5f, 0, 0), Matrix33F.CreateRotationY(ConstantsF.Pi));
GraphicsScreen.Scene.Children.Add(_meshNodeUncompressed);
_meshNodeCompressed = _meshNodeUncompressed.Clone();
_meshNodeCompressed.PoseLocal = new Pose(new Vector3F(0.5f, 0, 0), Matrix33F.CreateRotationY(ConstantsF.Pi));
GraphicsScreen.Scene.Children.Add(_meshNodeCompressed);
Dictionary<string, SkeletonKeyFrameAnimation> animations = _meshNodeUncompressed.Mesh.Animations;
_animation = animations.Values.First();
RestartAnimations();
}
public CharacterCrossFadeSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Marine/PlayerMarine");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
Dictionary<string, SkeletonKeyFrameAnimation> animations = _meshNode.Mesh.Animations;
// Create a looping 'Idle' animation.
_idleAnimation = new AnimationClip<SkeletonPose>(animations["Idle"])
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
// Create a looping 'Run' animation.
_runAnimation = new AnimationClip<SkeletonPose>(animations["Run"])
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
// Combine the 'Aim' and 'Shoot' animation. The 'Aim' animation should start immediately.
// The 'Shoot' animation should start after 0.3 seconds.
// (Animations can be combined by creating timeline groups. All timelines/animations
// in a timeline group are played simultaneously. AnimationClips can be used to
// arrange animations on a timeline. The property Delay, for example, can be used to
// set the begin time.)
_aimAndShootAnimation = new TimelineGroup();
_aimAndShootAnimation.Add(animations["Aim"]);
_aimAndShootAnimation.Add(new AnimationClip<SkeletonPose>(animations["Shoot"]) { Delay = TimeSpan.FromSeconds(0.3) });
// Start 'Idle' animation. We use a Replace transition with a fade-in.
_idleAnimationController = AnimationService.StartAnimation(
_idleAnimation,
(IAnimatableProperty)_meshNode.SkeletonPose,
AnimationTransitions.Replace(TimeSpan.FromSeconds(0.5)));
_idleAnimationController.AutoRecycle();
}
public AutoRagdollShapesSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0), Matrix33F.CreateRotationY(ConstantsF.Pi));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
var animations = _meshNode.Mesh.Animations;
var loopingAnimation = new AnimationClip<SkeletonPose>(animations.Values.First())
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
var animationController = AnimationService.StartAnimation(loopingAnimation, (IAnimatableProperty)_meshNode.SkeletonPose);
animationController.AutoRecycle();
animationController.UpdateAndApply();
// Create a ragdoll for the Dude model.
_ragdoll = CreateRagdoll(_meshNode);
// Set the world space pose of the whole ragdoll.
_ragdoll.Pose = _meshNode.PoseWorld;
// And copy the bone poses of the current skeleton pose.
_ragdoll.UpdateBodiesFromSkeleton(_meshNode.SkeletonPose);
foreach (var body in _ragdoll.Bodies)
{
if (body != null)
{
// Set all bodies to kinematic - they should not be affected by forces.
body.MotionType = MotionType.Kinematic;
// Disable collision response.
body.CollisionResponseEnabled = false;
}
}
// Add ragdoll rigid bodies to the simulation.
_ragdoll.AddToSimulation(Simulation);
}
public AvatarAttachmentSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
// This sample uses Scene and MeshRenderer for rendering the attached models.
_scene = new Scene();
_meshRenderer = new MeshRenderer();
// Add a custom game object which controls the camera.
_cameraObject = new CameraObject(Services);
_cameraObject.ResetPose(new Vector3F(0, 1, -3), ConstantsF.Pi, 0);
GameObjectService.Objects.Add(_cameraObject);
// Create a random avatar.
_avatarDescription = AvatarDescription.CreateRandom();
_avatarRenderer = new AvatarRenderer(_avatarDescription);
// Load walk animation using the content pipeline.
TimelineGroup animation = ContentManager.Load<TimelineGroup>("XboxAvatars/Walk");
// Create a looping walk animation.
_walkAnimation = new TimelineClip(animation)
{
LoopBehavior = LoopBehavior.Cycle, // Cycle Walk animation...
Duration = TimeSpan.MaxValue, // ...forever.
};
var baseballBatModelNode = ContentManager.Load<ModelNode>("XboxAvatars/BaseballBat").Clone();
_baseballBatMeshNode = baseballBatModelNode.GetChildren().OfType<MeshNode>().First();
// If we only render the baseball bat, it appears black. We need to add it to
// a scene with some lights. (The lights do not affect the avatar.)
SceneSample.InitializeDefaultXnaLights(_scene);
// We must detach the mesh node from its current parent (the model node) before
// we can add it to the scene.
_baseballBatMeshNode.Parent.Children.Remove(_baseballBatMeshNode);
_scene.Children.Add(_baseballBatMeshNode);
}
public JacobianTransposeIKSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
// Create the IK solver. The JacobianTranspose method can solve long bone chains with
// limits. It allocates heap memory as is not recommended for performance critical
// console or phone games.
_ikSolver = new JacobianTransposeIKSolver
{
SkeletonPose = _meshNode.SkeletonPose,
// The chain starts at the upper arm.
RootBoneIndex = 13,
// The chain ends at the hand bone.
TipBoneIndex = 15,
// The offset from the hand center to the hand origin.
TipOffset = new Vector3F(0.1f, 0, 0),
// This solver uses an iterative method and will make up to 100 iterations if necessary.
NumberOfIterations = 100,
// This parameter must be hand-tuned. Make it too large and the solver is unstable.
// Make it too low and the solver needs a crazy amount of iterations.
StepSize = 1,
// A method that applies bone limits.
LimitBoneTransforms = LimitBoneTransform,
};
}
private void InitializeModels()
{
var contentManager = Services.GetInstance<ContentManager>();
var dudeModelNode = contentManager.Load<ModelNode>("Dude/Dude");
_meshNodeA = dudeModelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNodeA.PoseLocal = new Pose(new Vector3F(0, 0, 0));
SampleHelper.EnablePerPixelLighting(_meshNodeA);
GraphicsScreen.Scene.Children.Add(_meshNodeA);
var marineModelNode = contentManager.Load<ModelNode>("Marine/PlayerMarine");
_meshNodeB = marineModelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNodeB.PoseLocal = new Pose(new Vector3F(0, 0, 0));
SampleHelper.EnablePerPixelLighting(_meshNodeB);
GraphicsScreen.Scene.Children.Add(_meshNodeB);
}
private void InitializeModelAndRagdoll()
{
// Load Dude model.
var contentManager = Services.GetInstance<ContentManager>();
var dudeModelNode = contentManager.Load<ModelNode>("Dude/Dude");
_meshNode = dudeModelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
// Create a ragdoll for the Dude model.
_ragdoll = new Ragdoll();
DudeRagdollCreator.Create(_meshNode.SkeletonPose, _ragdoll, Simulation, 0.571f);
// Set the world space pose of the whole ragdoll. And copy the bone poses of the
// current skeleton pose.
_ragdoll.Pose = _meshNode.PoseWorld;
_ragdoll.UpdateBodiesFromSkeleton(_meshNode.SkeletonPose);
// Disable sleeping.
foreach (var body in _ragdoll.Bodies)
{
if (body != null)
{
body.CanSleep = false;
//body.CollisionResponseEnabled = false;
}
}
// The pelvis bone (index 1) is updated directly from the Kinect hip center.
_ragdoll.Bodies[1].MotionType = MotionType.Kinematic;
// In this sample we use a passive ragdoll where we need joints to hold the
// limbs together and limits to restrict angular movement.
_ragdoll.EnableJoints();
_ragdoll.EnableLimits();
// Set all motors to constraint motors that only use damping. This adds a damping
// effect to all ragdoll limbs.
foreach (RagdollMotor motor in _ragdoll.Motors)
{
if (motor != null)
{
motor.Mode = RagdollMotorMode.Constraint;
motor.ConstraintDamping = 100;
motor.ConstraintSpring = 0;
}
}
_ragdoll.EnableMotors();
// Add rigid bodies and the constraints of the ragdoll to the simulation.
_ragdoll.AddToSimulation(Simulation);
}
// Creates a test scene with a lot of randomly placed objects.
internal static void CreateScene(ServiceContainer services, ContentManager content, DeferredGraphicsScreen graphicsScreen)
{
var gameObjectService = services.GetInstance<IGameObjectService>();
var graphicsService = services.GetInstance<IGraphicsService>();
gameObjectService.Objects.Add(new DynamicSkyObject(services, true, false, true)
{
EnableAmbientLight = false, // Disable ambient light of sky to make shadows more visible.
EnableCloudShadows = false
});
gameObjectService.Objects.Add(new GroundObject(services));
gameObjectService.Objects.Add(new DynamicObject(services, 1));
gameObjectService.Objects.Add(new DynamicObject(services, 2));
gameObjectService.Objects.Add(new DynamicObject(services, 3));
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 ObjectCreatorObject(services));
gameObjectService.Objects.Add(new LavaBallsObject(services));
var random = new Random();
// Spheres
var sphereMesh = SampleHelper.CreateMesh(content, graphicsService, new SphereShape(1));
for (int i = 0; i < 100; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-100, 100), random.NextFloat(0, 3), random.NextFloat(-100, 100));
float scale = random.NextFloat(0.5f, 3f);
var meshNode = new MeshNode(sphereMesh)
{
PoseLocal = new Pose(position),
ScaleLocal = new Vector3F(scale),
IsStatic = true,
};
graphicsScreen.Scene.Children.Add(meshNode);
}
// Boxes
var boxMesh = SampleHelper.CreateMesh(content, graphicsService, new BoxShape(1, 1, 1));
for (int i = 0; i < 100; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-100, 100), random.NextFloat(0, 3), random.NextFloat(-100, 100));
QuaternionF orientation = random.NextQuaternionF();
Vector3F scale = random.NextVector3F(0.1f, 4f);
var meshNode = new MeshNode(boxMesh)
{
PoseLocal = new Pose(position, orientation),
ScaleLocal = scale,
IsStatic = true,
};
graphicsScreen.Scene.Children.Add(meshNode);
}
// Height field with smooth hills.
var numberOfSamplesX = 20;
var numberOfSamplesZ = 20;
var samples = new float[numberOfSamplesX * numberOfSamplesZ];
for (int z = 0; z < numberOfSamplesZ; z++)
{
for (int x = 0; x < numberOfSamplesX; x++)
{
if (x == 0 || z == 0 || x == 19 || z == 19)
{
// Set this boundary elements to a low height, so that the height field is connected
// to the ground.
samples[z * numberOfSamplesX + x] = -1;
}
else
{
// A sine/cosine function that creates some interesting waves.
samples[z * numberOfSamplesX + x] = 1 + (float)(Math.Cos(z / 2f) * Math.Sin(x / 2f) * 1);
}
}
}
var heightField = new HeightField(0, 0, 20, 20, samples, numberOfSamplesX, numberOfSamplesZ);
var heightFieldMesh = SampleHelper.CreateMesh(content, graphicsService, heightField);
var heightFieldMeshNode = new MeshNode(heightFieldMesh)
{
PoseLocal = new Pose(new Vector3F(20, 0, -20)),
ScaleLocal = new Vector3F(1, 2, 1),
IsStatic = true,
};
graphicsScreen.Scene.Children.Add(heightFieldMeshNode);
// Dudes.
for (int i = 0; i < 10; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-20, 20), 0, random.NextFloat(-20, 20));
Matrix33F orientation = Matrix33F.CreateRotationY(random.NextFloat(0, ConstantsF.TwoPi));
gameObjectService.Objects.Add(new DudeObject(services) { Pose = new Pose(position, orientation) });
}
// Palm trees.
for (int i = 0; i < 100; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-80, 80), 0, random.NextFloat(-100, 100));
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)));
}
// Rocks
for (int i = 0; i < 100; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-80, 80), 1, random.NextFloat(-100, 100));
QuaternionF orientation = RandomHelper.Random.NextQuaternionF();
float scale = random.NextFloat(0.5f, 1.2f);
gameObjectService.Objects.Add(new StaticObject(services, "Rock/rock_05", scale, new Pose(position, orientation)));
}
// Grass
for (int i = 0; i < 100; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-20, 20), 0, random.NextFloat(-20, 20));
Matrix33F orientation = Matrix33F.CreateRotationY(random.NextFloat(0, ConstantsF.TwoPi));
float scale = random.NextFloat(0.5f, 1.2f);
gameObjectService.Objects.Add(new StaticObject(services, "Grass/Grass", scale, new Pose(position, orientation)));
}
// More plants
for (int i = 0; i < 100; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-20, 20), 0, random.NextFloat(-20, 20));
Matrix33F orientation = Matrix33F.CreateRotationY(random.NextFloat(0, ConstantsF.TwoPi));
float scale = random.NextFloat(0.5f, 1.2f);
gameObjectService.Objects.Add(new StaticObject(services, "Parviflora/Parviflora", scale, new Pose(position, orientation)));
}
// "Skyscrapers"
for (int i = 0; i < 20; i++)
{
Vector3F position = new Vector3F(random.NextFloat(90, 100), 0, random.NextFloat(-100, 100));
Matrix33F orientation = Matrix33F.CreateRotationY(random.NextFloat(0, ConstantsF.TwoPi));
Vector3F scale = new Vector3F(random.NextFloat(6, 20), random.NextFloat(10, 100), random.NextFloat(6, 20));
var meshNode = new MeshNode(boxMesh)
{
PoseLocal = new Pose(position, orientation),
ScaleLocal = scale,
IsStatic = true,
UserFlags = 1, // Mark the distant huge objects. Used in render callbacks in the CompositeShadowSample.
};
graphicsScreen.Scene.Children.Add(meshNode);
}
// "Hills"
for (int i = 0; i < 20; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-90, -100), 0, random.NextFloat(-100, 100));
Vector3F scale = new Vector3F(random.NextFloat(10, 20), random.NextFloat(10, 30), random.NextFloat(10, 20));
var meshNode = new MeshNode(sphereMesh)
{
PoseLocal = new Pose(position),
ScaleLocal = scale,
IsStatic = true,
UserFlags = 1, // Mark the distant huge objects. Used in render callbacks in the CompositeShadowSample.
};
graphicsScreen.Scene.Children.Add(meshNode);
}
}
private static void SetReflectionEffectParameters(MeshNode meshNode, PlanarReflectionNode planarReflectionNode)
{
// Loop through the materials of the mesh. The material uses the effect
// GroundReflective/MaterialReflective.fx.
foreach (var materialInstance in meshNode.MaterialInstances)
{
// Get effect binding for the "Material" render pass. (Not the "GBuffer" or other passes.)
var effectBinding = materialInstance["Material"];
// Set reflection texture and size parameters.
var texture = (Texture2D)planarReflectionNode.RenderToTexture.Texture;
effectBinding.Set<Texture>("ReflectionTexture", texture);
effectBinding.Set<Vector2>("ReflectionTextureSize", new Vector2(texture.Width, texture.Height));
// The reflection texture matrix and the reflection normal may change over
// time. Therefore, we need to set a delegate that updates the value once
// per frame.
effectBinding.Set<Matrix>("ReflectionMatrix", (binding, context) => (Matrix)planarReflectionNode.RenderToTexture.TextureMatrix);
effectBinding.Set<Vector3>("ReflectionNormal", (binding, context) => (Vector3)planarReflectionNode.NormalWorld);
}
}
private Ragdoll CreateRagdoll(MeshNode meshNode)
{
var mesh = meshNode.Mesh;
var skeleton = mesh.Skeleton;
// Extract the vertices from the mesh sorted per bone.
var verticesPerBone = new List<Vector3F>[skeleton.NumberOfBones];
// Also get the AABB of the model.
Aabb? aabb = null;
foreach (var submesh in mesh.Submeshes)
{
// Get vertex element info.
var vertexDeclaration = submesh.VertexBuffer.VertexDeclaration;
var vertexElements = vertexDeclaration.GetVertexElements();
// Get the vertex positions.
var positionElement = vertexElements.First(e => e.VertexElementUsage == VertexElementUsage.Position);
if (positionElement.VertexElementFormat != VertexElementFormat.Vector3)
throw new NotSupportedException("For vertex positions only VertexElementFormat.Vector3 is supported.");
var positions = new Vector3[submesh.VertexCount];
submesh.VertexBuffer.GetData(
submesh.StartVertex * vertexDeclaration.VertexStride + positionElement.Offset,
positions,
0,
submesh.VertexCount,
vertexDeclaration.VertexStride);
// Get the bone indices.
var boneIndexElement = vertexElements.First(e => e.VertexElementUsage == VertexElementUsage.BlendIndices);
if (boneIndexElement.VertexElementFormat != VertexElementFormat.Byte4)
throw new NotSupportedException();
var boneIndicesArray = new Byte4[submesh.VertexCount];
submesh.VertexBuffer.GetData(
submesh.StartVertex * vertexDeclaration.VertexStride + boneIndexElement.Offset,
boneIndicesArray,
0,
submesh.VertexCount,
vertexDeclaration.VertexStride);
// Get the bone weights.
var boneWeightElement = vertexElements.First(e => e.VertexElementUsage == VertexElementUsage.BlendWeight);
if (boneWeightElement.VertexElementFormat != VertexElementFormat.Vector4)
throw new NotSupportedException();
var boneWeightsArray = new Vector4[submesh.VertexCount];
submesh.VertexBuffer.GetData(
submesh.StartVertex * vertexDeclaration.VertexStride + boneWeightElement.Offset,
boneWeightsArray,
0,
submesh.VertexCount,
vertexDeclaration.VertexStride);
// Sort the vertices per bone.
for (int i = 0; i < submesh.VertexCount; i++)
{
var vertex = (Vector3F)positions[i];
// Here, we only check the first bone index. We could also check the
// bone weights to add the vertex to all bone vertex lists where the
// weight is high...
Vector4 boneIndices = boneIndicesArray[i].ToVector4();
//Vector4 boneWeights = boneWeightsArray[i];
int boneIndex = (int)boneIndices.X;
if (verticesPerBone[boneIndex] == null)
verticesPerBone[boneIndex] = new List<Vector3F>();
verticesPerBone[boneIndex].Add(vertex);
// Add vertex to AABB.
if (aabb == null)
aabb = new Aabb(vertex, vertex);
else
aabb.Value.Grow(vertex);
}
}
// We create a body for each bone with vertices.
int numberOfBodies = verticesPerBone.Count(vertices => vertices != null);
// We use the same mass properties for all bodies. This is not realistic but more stable
// because large mass differences or thin bodies (arms!) are less stable.
// We use the mass properties of sphere proportional to the size of the model.
const float totalMass = 80; // The total mass of the ragdoll.
var massFrame = MassFrame.FromShapeAndMass(new SphereShape(aabb.Value.Extent.Y / 8), Vector3F.One, totalMass / numberOfBodies, 0.1f, 1);
var material = new UniformMaterial();
Ragdoll ragdoll = new Ragdoll();
for (int boneIndex = 0; boneIndex < skeleton.NumberOfBones; boneIndex++)
{
var boneVertices = verticesPerBone[boneIndex];
if (boneVertices != null)
{
var bindPoseInverse = (Pose)skeleton.GetBindPoseAbsoluteInverse(boneIndex);
// Compute bounding capsule.
//float radius;
//float height;
//Pose pose;
//GeometryHelper.ComputeBoundingCapsule(boneVertices, out radius, out height, out pose);
//Shape shape = new TransformedShape(new GeometricObject(new CapsuleShape(radius, height), pose));
// Compute convex hull.
var points = GeometryHelper.CreateConvexHull(boneVertices, 32, 0).ToTriangleMesh().Vertices;
Shape shape = new ConvexHullOfPoints(points.Count > 0 ? points : boneVertices);
ragdoll.Bodies.Add(new RigidBody(shape, massFrame, material));
ragdoll.BodyOffsets.Add(bindPoseInverse);
}
else
{
ragdoll.Bodies.Add(null);
ragdoll.BodyOffsets.Add(Pose.Identity);
}
}
return ragdoll;
}
public ActiveRagdollSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.DrawReticle = true;
// Add game objects which allow to shoot balls and grab rigid bodies.
_ballShooterObject = new BallShooterObject(Services) { Speed = 10 };
GameObjectService.Objects.Add(_ballShooterObject);
_grabObject = new GrabObject(Services);
GameObjectService.Objects.Add(_grabObject);
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
// Create a copy of the dude's skeleton.
_targetSkeletonPose = SkeletonPose.Create(_meshNode.Mesh.Skeleton);
// Animate the _targetSkeletonPose.
var animations = _meshNode.Mesh.Animations;
var loopingAnimation = new AnimationClip<SkeletonPose>(animations.Values.First())
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
AnimationService.StartAnimation(loopingAnimation, (IAnimatableProperty)_targetSkeletonPose);
// Create a ragdoll for the Dude model.
_ragdoll = new Ragdoll();
DudeRagdollCreator.Create(_targetSkeletonPose, _ragdoll, Simulation, 0.571f);
// Set the world space pose of the whole ragdoll. And copy the bone poses of the
// current skeleton pose.
_ragdoll.Pose = _meshNode.PoseWorld;
_ragdoll.UpdateBodiesFromSkeleton(_targetSkeletonPose);
// In this sample we use an active ragdoll. We need joints because constraint ragdoll
// motors only affect the body rotations.
_ragdoll.EnableJoints();
// We disable limits. If limits are enabled, the ragdoll could get unstable if
// the animation tries to move a limb beyond an allowed limit. (This happens if
// a pose in the animation violates one of our limits.)
_ragdoll.DisableLimits();
// Set all motors to constraint motors. Constraint motors are like springs that
// rotate the limbs to a target position.
foreach (RagdollMotor motor in _ragdoll.Motors)
{
if (motor != null)
{
motor.Mode = RagdollMotorMode.Constraint;
motor.ConstraintDamping = 10000;
motor.ConstraintSpring = 100000;
}
}
_ragdoll.EnableMotors();
// Add rigid bodies and the constraints of the ragdoll to the simulation.
_ragdoll.AddToSimulation(Simulation);
// Add a rigid body.
var box = new RigidBody(new BoxShape(0.4f, 0.4f, 0.4f))
{
Name = "Box",
Pose = new Pose(new Vector3F(0, 3, 0)),
};
Simulation.RigidBodies.Add(box);
}
public LookAtIKSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0), Matrix33F.CreateRotationY(ConstantsF.Pi));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
var animations = _meshNode.Mesh.Animations;
var loopingAnimation = new AnimationClip<SkeletonPose>(animations.Values.First())
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
AnimationService.StartAnimation(loopingAnimation, (IAnimatableProperty)_meshNode.SkeletonPose);
// Create LookAtIKSolvers for some spine bones, the neck and the head.
_spine1IK = new LookAtIKSolver
{
SkeletonPose = _meshNode.SkeletonPose,
BoneIndex = 3,
// The bone space axis that points in look direction.
Forward = Vector3F.UnitY,
// The bone space axis that points in up direction
Up = Vector3F.UnitX,
// An arbitrary rotation limit.
Limit = ConstantsF.PiOver4,
// We use a weight of 1 for the head, and lower weights for all other bones. Thus, most
// of the looking will be done by the head bone, and the influence on the other bones is
// smaller.
Weight = 0.2f,
// It is important to set the EyeOffsets. If we do not set EyeOffsets, the IK solver
// assumes that the eyes are positioned in the origin of the bone.
// Approximate EyeOffsets are sufficient.
EyeOffset = new Vector3F(0.8f, 0, 0),
};
_spine2IK = new LookAtIKSolver
{
SkeletonPose = _meshNode.SkeletonPose,
BoneIndex = 4,
Forward = Vector3F.UnitY,
Up = Vector3F.UnitX,
Limit = ConstantsF.PiOver4,
Weight = 0.2f,
EyeOffset = new Vector3F(0.64f, 0, 0),
};
_spine3IK = new LookAtIKSolver
{
SkeletonPose = _meshNode.SkeletonPose,
BoneIndex = 5,
Forward = Vector3F.UnitY,
Up = Vector3F.UnitX,
Limit = ConstantsF.PiOver4,
Weight = 0.3f,
EyeOffset = new Vector3F(0.48f, 0, 0),
};
_neckIK = new LookAtIKSolver
{
SkeletonPose = _meshNode.SkeletonPose,
BoneIndex = 6,
Forward = Vector3F.UnitY,
Up = Vector3F.UnitX,
Limit = ConstantsF.PiOver4,
Weight = 0.4f,
EyeOffset = new Vector3F(0.32f, 0, 0),
};
_headIK = new LookAtIKSolver
{
SkeletonPose = _meshNode.SkeletonPose,
BoneIndex = 7,
Forward = Vector3F.UnitY,
Up = Vector3F.UnitX,
EyeOffset = new Vector3F(0.16f, 0.16f, 0),
Weight = 1.0f,
Limit = ConstantsF.PiOver4,
};
}
public KinematicRagdollSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.DrawReticle = true;
// Add game objects which allow to shoot balls and grab rigid bodies.
_ballShooterObject = new BallShooterObject(Services) { Speed = 10 };
GameObjectService.Objects.Add(_ballShooterObject);
_grabObject = new GrabObject(Services);
GameObjectService.Objects.Add(_grabObject);
var modelNode = ContentManager.Load<ModelNode>("Dude/Dude");
_meshNode = modelNode.GetSubtree().OfType<MeshNode>().First().Clone();
_meshNode.PoseLocal = new Pose(new Vector3F(0, 0, 0), Matrix33F.CreateRotationY(ConstantsF.Pi));
SampleHelper.EnablePerPixelLighting(_meshNode);
GraphicsScreen.Scene.Children.Add(_meshNode);
var animations = _meshNode.Mesh.Animations;
var loopingAnimation = new AnimationClip<SkeletonPose>(animations.Values.First())
{
LoopBehavior = LoopBehavior.Cycle,
Duration = TimeSpan.MaxValue,
};
var animationController = AnimationService.StartAnimation(loopingAnimation, (IAnimatableProperty)_meshNode.SkeletonPose);
animationController.UpdateAndApply();
// Create a ragdoll for the Dude model.
_ragdoll = new Ragdoll();
DudeRagdollCreator.Create(_meshNode.SkeletonPose, _ragdoll, Simulation, 0.571f);
// Set the world space pose of the whole ragdoll. And copy the bone poses of the
// current skeleton pose.
_ragdoll.Pose = _meshNode.PoseWorld;
_ragdoll.UpdateBodiesFromSkeleton(_meshNode.SkeletonPose);
// Set all bodies to kinematic - they should not be affected by forces.
foreach (var body in _ragdoll.Bodies)
{
if (body != null)
{
body.MotionType = MotionType.Kinematic;
}
}
// Set all motors to velocity motors. Velocity motors change RigidBody.LinearVelocity
// RigidBody.AngularVelocity to move the rigid bodies.
foreach (RagdollMotor motor in _ragdoll.Motors)
{
if (motor != null)
{
motor.Mode = RagdollMotorMode.Velocity;
}
}
_ragdoll.EnableMotors();
// In this sample, we do not need joints or limits.
_ragdoll.DisableJoints();
_ragdoll.DisableLimits();
// Add ragdoll rigid bodies to the simulation.
_ragdoll.AddToSimulation(Simulation);
// Add a rigid body.
var box = new RigidBody(new BoxShape(0.4f, 0.4f, 0.4f))
{
Name = "Box",
Pose = new Pose(new Vector3F(0, 3, 0)),
};
Simulation.RigidBodies.Add(box);
}
public ParallaxMappingSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
_graphicsScreen = new DeferredGraphicsScreen(Services);
_graphicsScreen.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;
GameObjectService.Objects.Add(new GrabObject(Services));
GameObjectService.Objects.Add(new ObjectCreatorObject(Services));
GameObjectService.Objects.Add(new DynamicSkyObject(Services, false, false, true));
GameObjectService.Objects.Add(new DynamicObject(Services, 1));
GameObjectService.Objects.Add(new DynamicObject(Services, 1));
GameObjectService.Objects.Add(new DynamicObject(Services, 1));
GameObjectService.Objects.Add(new DynamicObject(Services, 2));
GameObjectService.Objects.Add(new DynamicObject(Services, 2));
GameObjectService.Objects.Add(new DynamicObject(Services, 2));
// 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 ground model which uses normal mapping.
var modelNode = ContentManager.Load<ModelNode>("Parallax/Ground");
_meshNode = modelNode.Children.OfType<MeshNode>().First().Clone();
_meshNode.ScaleLocal = new Vector3F(0.1f);
_meshNode.IsStatic = true;
Debug.Assert(_meshNode.Mesh.Materials.Count == 1, "Mesh should have only one material.");
// Load materials with normal mapping, parallax mapping and parallax occlusion mapping.
_normalMaterial = ContentManager.Load<Material>("Parallax/Normal").Clone();
_parallaxMappingMaterial = ContentManager.Load<Material>("Parallax/PM").Clone();
_parallaxOcclusionMappingMaterial = ContentManager.Load<Material>("Parallax/POM").Clone();
// Get default values from materials.
var parameterBindings = _parallaxOcclusionMappingMaterial["Material"].ParameterBindings;
_heightScale = ((ConstParameterBinding<float>)parameterBindings["HeightScale"]).Value;
_heightBias = ((ConstParameterBinding<float>)parameterBindings["HeightBias"]).Value;
_lodThreshold = ((ConstParameterBinding<int>)parameterBindings["LodThreshold"]).Value;
_maxSamples = ((ConstParameterBinding<int>)parameterBindings["MaxSamples"]).Value;
_shadowStrength = ((ConstParameterBinding<float>)parameterBindings["ShadowStrength"]).Value;
// Start test with POM material.
_currentMaterialIndex = 2;
UpdateMesh();
// Add nodes to scene graph.
_graphicsScreen.Scene.Children.Add(_meshNode);
// Create rigid body for ground plane.
Simulation.RigidBodies.Add(new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
MotionType = MotionType.Static,
});
}
// Checks if an effect of the uses the "SourceTexture" effect parameter.
// This method assumes that the parameter "SourceTexture" is a "global" parameter
// which means that it is stored with the effect (not in the Materials and not
// in the MaterialInstances).
// TODO: To improve performance, make this check only once and store a flag in the
// SceneNode.UserFlags.
private bool RequiresSourceTexture(MeshNode meshNode, RenderContext context)
{
foreach (var material in meshNode.Mesh.Materials)
{
EffectBinding effectBinding;
if (material.TryGet(context.RenderPass, out effectBinding))
{
var effect = material[context.RenderPass].Effect;
var parameterBindings = effect.GetParameterBindings();
foreach (var binding in parameterBindings)
if (binding.Description.Semantic == DefaultEffectParameterSemantics.SourceTexture)
return true;
}
}
return false;
}
internal static void CorrectWorldSpacePose(MeshNode meshNode, Ragdoll ragdoll)
{
// Notes:
// The Ragdoll class is simply a container for rigid bodies, joints, limits, motors, etc.
// It has a Ragdoll.Pose property that determines the world space pose of the model.
// The Ragdoll class does not update this property. It only reads it.
// Let's say the ragdoll and model are created at the world space origin. Then the user
// grabs the ragdoll and throws it 100 units away. Then the Ragdoll.Pose (and the root bone)
// is still at the origin and the first body (the pelvis) is 100 units away.
// You can observe this if you comment out this method and look at the debug rendering of
// the skeleton.
// To avoid this we correct the Ragdoll.Pose and make sure that it is always near the
// pelvis bone.
int pelvis = meshNode.SkeletonPose.Skeleton.GetIndex("Pelvis");
SrtTransform pelvisBindPoseAbsoluteInverse = meshNode.SkeletonPose.Skeleton.GetBindPoseAbsoluteInverse(pelvis);
ragdoll.Pose = ragdoll.Bodies[pelvis].Pose * ragdoll.BodyOffsets[pelvis].Inverse * (Pose)pelvisBindPoseAbsoluteInverse;
meshNode.PoseWorld = ragdoll.Pose;
}
