/// <summary>
/// Plays the specified animation.
/// </summary>
/// <param name="mode">The animation mode.</param>
/// <param name="animation">The animation to play.</param>
/// <param name="speedMultiplier">The relative speed at which to play the animation.</param>
/// <param name="easeInFunction">The easing function to apply when easing in the animation.</param>
/// <param name="easeInDuration">The number of seconds over which to ease in the animation.</param>
/// <param name="easeOutFunction">The easing function to apply when easing out the animation.</param>
/// <param name="easeOutDuration">The number of seconds over which to ease out the animation.</param>
/// <param name="callbacks">The set of callbacks to invoke for this animation.</param>
public void Play(SkinnedAnimationMode mode, SkinnedAnimation animation, Single speedMultiplier,
EasingFunction easeInFunction, Double easeInDuration, EasingFunction easeOutFunction, Double easeOutDuration, SkinnedAnimationCallbacks?callbacks = null)
{
Contract.Require(animation, nameof(animation));
Contract.Require(easeInFunction, nameof(easeInFunction));
Contract.EnsureRange(easeInDuration >= 0, nameof(easeInDuration));
Contract.Require(easeOutFunction, nameof(easeOutFunction));
Contract.EnsureRange(easeOutDuration >= 0, nameof(easeOutDuration));
this.currentAnimationMode = mode;
this.CurrentAnimation = animation;
this.currentAnimationTime = 0.0;
this.SpeedMultiplier = speedMultiplier;
if (mode != SkinnedAnimationMode.Manual)
{
this.easeInFunction = easeInFunction;
this.easeInDuration = easeInDuration;
this.easeOutFunction = easeOutFunction;
this.easeOutDuration = easeOutDuration;
}
else
{
this.easeInFunction = null;
this.easeInDuration = 0;
this.easeOutFunction = null;
this.easeOutDuration = 0;
}
this.easeInElasped = 0;
this.easeOutElapsed = 0;
this.BlendingWeight = 1f;
this.callbacks = callbacks;
}
/// <summary>
/// Allocates a track to play the specified animation.
/// </summary>
private KeyValuePair <Int32, SkinnedAnimationTrack> AllocateTrack(SkinnedAnimation animation)
{
var existing = GetTrackForAnimationInternal(animation);
if (existing.Value != null)
{
return(existing);
}
// If no existing controller, find one that isn't playing.
var leastRecentlyPlayed = default(SkinnedAnimationTrack);
var leastRecentlyPlayedIndex = -1;
var leastRecentlyPlayedOrder = Int64.MaxValue;
for (var i = 0; i < tracks.Length; i++)
{
var controller = tracks[i];
var order = ordering[i];
if (leastRecentlyPlayed == null || order < leastRecentlyPlayedOrder)
{
leastRecentlyPlayed = controller;
leastRecentlyPlayedIndex = i;
leastRecentlyPlayedOrder = order;
}
if (!controller.IsPlaying)
{
return(new KeyValuePair <Int32, SkinnedAnimationTrack>(i, controller));
}
}
// If no stopped controller, override the one that was least recently played.
return(new KeyValuePair <Int32, SkinnedAnimationTrack>(leastRecentlyPlayedIndex, leastRecentlyPlayed));
}
/// <summary>
/// Plays the specified animation. If the animation is already playing,
/// it will be restarted using the specified mode.
/// </summary>
/// <param name="mode">A <see cref="SkinnedAnimationMode"/> value which describes the animation mode.</param>
/// <param name="animation">The animation to play.</param>
/// <param name="speedMultiplier">The relative speed at which to play the animation.</param>
/// <param name="callbacks">The set of callbacks to invoke for this animation.</param>
/// <returns>The <see cref="SkinnedAnimationTrack"/> which is playing the animation, or <see langword="null"/> if the animation could not be played.</returns>
public SkinnedAnimationTrack PlayAnimation(SkinnedAnimationMode mode, SkinnedAnimation animation, Single speedMultiplier = 1f, SkinnedAnimationCallbacks?callbacks = null)
{
var controllerAllocation = AllocateTrack(animation);
var controller = controllerAllocation.Value;
controller.Play(mode, animation, speedMultiplier, callbacks);
ordering[controllerAllocation.Key] = ++orderingCounter;
UpdateAnimationState();
return(controller);
}
/// <summary>
/// Immediately stops the specified animation without performing any easing.
/// </summary>
/// <param name="animation">The animation to stop.</param>
/// <returns>The <see cref="SkinnedAnimationTrack"/> which was playing the animation, or <see langword="null"/> if the animation was not being played.</returns>
public SkinnedAnimationTrack StopAnimationImmediate(SkinnedAnimation animation)
{
var controller = GetTrackForAnimation(animation);
if (controller != null)
{
controller.StopImmediate();
UpdateAnimationState();
return(controller);
}
return(null);
}
/// <summary>
/// Processes the node's animations.
/// </summary>
private static IEnumerable <SkinnedAnimation> ProcessAnimations(ModelRoot input, IEnumerable <ModelScene> scenes, Int32 nodesCount)
{
var uvAnimations = new List <SkinnedAnimation>(input.LogicalAnimations.Count);
foreach (var animation in input.LogicalAnimations)
{
var uvNodeAnimations = new SkinnedModelNodeAnimation[nodesCount];
TraverseModelNodes(scenes, (n, state) =>
{
var gltfNode = input.LogicalNodes[n.LogicalIndex];
var animScale = animation.FindScaleSampler(gltfNode);
var animTranslation = animation.FindTranslationSampler(gltfNode);
var animRotation = animation.FindRotationSampler(gltfNode);
var animMorphWeights = animation.FindMorphSampler(gltfNode);
if (animScale != null || animRotation != null || animTranslation != null || animMorphWeights != null)
{
var curveScale = CreateCurve(animScale, x => x,
Vector3CurveStepSampler.Instance, Vector3CurveLinearSampler.Instance, Vector3CurveCubicSplineSampler.Instance);
var curveTranslation = CreateCurve(animTranslation, x => x,
Vector3CurveStepSampler.Instance, Vector3CurveLinearSampler.Instance, Vector3CurveCubicSplineSampler.Instance);
var curveRotation = CreateCurve(animRotation, x => x,
QuaternionCurveStepSampler.Instance, QuaternionCurveLinearSampler.Instance, QuaternionCurveCubicSplineSampler.Instance);
var curveMorphWeights = CreateCurve(animMorphWeights, x => new ArraySegment <Single>(x),
SingleArrayCurveStepSampler.Instance, SingleArrayCurveLinearSampler.Instance, SingleArrayCurveCubicSplineSampler.Instance);
var uvNodeAnimation = new SkinnedModelNodeAnimation(n, curveScale, curveTranslation, curveRotation, curveMorphWeights);
uvNodeAnimations[gltfNode.LogicalIndex] = uvNodeAnimation;
}
});
var uvAnimation = new SkinnedAnimation(animation.Name, uvNodeAnimations);
uvAnimations.Add(uvAnimation);
}
return(uvAnimations);
}
/// <summary>
/// Gets the track that is currently playing the specified animation.
/// </summary>
private KeyValuePair <Int32, SkinnedAnimationTrack> GetTrackForAnimationInternal(SkinnedAnimation animation)
{
for (var i = 0; i < tracks.Length; i++)
{
var controller = tracks[i];
if (controller.IsPlayingAnimation(animation))
{
return(new KeyValuePair <Int32, SkinnedAnimationTrack>(i, controller));
}
}
return(new KeyValuePair <Int32, SkinnedAnimationTrack>(-1, null));
}
/// <summary>
/// Gets the track that is currently playing the specified animation.
/// </summary>
/// <param name="animation">The animation to evaluate.</param>
/// <returns>The <see cref="SkinnedAnimationTrack"/> which is currently playing the specified
/// animation, or <see langword="null"/> if no track is playing the animation.</returns>
public SkinnedAnimationTrack GetTrackForAnimation(SkinnedAnimation animation)
{
return(GetTrackForAnimationInternal(animation).Value);
}
/// <summary>
/// Gets a value indicating whether the track is currently playing the specified animation.
/// </summary>
/// <param name="animation">The animation to evaluate.</param>
/// <returns><see langword="true"/> if the track is currently playing the specified animation; otherwise, <see langword="false"/>.</returns>
public Boolean IsPlayingAnimation(SkinnedAnimation animation)
{
Contract.Require(animation, nameof(animation));
return(animation == CurrentAnimation);
}
/// <summary>
/// Plays the specified animation.
/// </summary>
/// <param name="mode">The animation mode.</param>
/// <param name="animation">The animation to play.</param>
/// <param name="speedMultiplier">The relative speed at which to play the animation.</param>
/// <param name="callbacks">The set of callbacks to invoke for this animation.</param>
public void Play(SkinnedAnimationMode mode, SkinnedAnimation animation, Single speedMultiplier = 1f, SkinnedAnimationCallbacks?callbacks = null)
{
Play(mode, animation, speedMultiplier, Easings.EaseInLinear, 0.0, Easings.EaseOutLinear, 0.0, callbacks);
}