/// <inheritdoc />
public override void Destroy(TwistChainConstraintJob job)
{
job.chain.Dispose();
job.weights.Dispose();
job.steps.Dispose();
job.rotations.Dispose();
}
/// <inheritdoc />
public override void Update(TwistChainConstraintJob job, ref T data)
{
// Update weights based on curve.
for (int i = 0; i < job.steps.Length; ++i)
{
job.weights[i] = Mathf.Clamp01(data.curve.Evaluate(job.steps[i]));
}
}
/// <inheritdoc />
public override TwistChainConstraintJob Create(Animator animator, ref T data, Component component)
{
// Retrieve chain in-between root and tip transforms.
Transform[] chain = ConstraintsUtils.ExtractChain(data.root, data.tip);
// Extract steps from chain.
float[] steps = ConstraintsUtils.ExtractSteps(chain);
// Build Job.
var job = new TwistChainConstraintJob();
job.chain = new NativeArray <ReadWriteTransformHandle>(chain.Length, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
job.steps = new NativeArray <float>(chain.Length, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
job.weights = new NativeArray <float>(chain.Length, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
job.rotations = new NativeArray <Quaternion>(chain.Length, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
job.rootTarget = ReadWriteTransformHandle.Bind(animator, data.rootTarget);
job.tipTarget = ReadWriteTransformHandle.Bind(animator, data.tipTarget);
// Set values in NativeArray.
for (int i = 0; i < chain.Length; ++i)
{
job.chain[i] = ReadWriteTransformHandle.Bind(animator, chain[i]);
job.steps[i] = steps[i];
job.weights[i] = Mathf.Clamp01(data.curve.Evaluate(steps[i]));
}
job.rotations[0] = Quaternion.identity;
job.rotations[chain.Length - 1] = Quaternion.identity;
for (int i = 1; i < chain.Length - 1; ++i)
{
job.rotations[i] = Quaternion.Inverse(Quaternion.Lerp(chain[0].rotation, chain[chain.Length - 1].rotation, job.weights[i])) * chain[i].rotation;
}
return(job);
}
