private string GenerateFrame(BVHAnimation animation, BVHAnimation.BVHFrame frame, int sequence, bool mirrored)
{
//Sequence number
string line = sequence + Separator;
//Frame index
line += frame.Index + Separator;
//Frame time
line += frame.Timestamp + Separator;
//Get current trajectory
Trajectory currentTrajectory = animation.ExtractTrajectory(frame, mirrored);
//Get root transformation
Matrix4x4 root = currentTrajectory.Points[6].GetTransformation();
//Extract data
Matrix4x4[] posture = animation.ExtractPosture(frame, mirrored);
Vector3[] velocities = animation.ExtractBoneVelocities(frame, mirrored);
//Bone data
for (int k = 0; k < animation.Character.Hierarchy.Length; k++)
{
if (animation.Bones[k])
{
//Position
line += FormatVector3(posture[k].GetPosition().GetRelativePositionTo(root));
//Rotation
line += FormatVector3(posture[k].GetForward().GetRelativeDirectionTo(root));
line += FormatVector3(posture[k].GetUp().GetRelativeDirectionTo(root));
//Bone Velocity
line += FormatVector3(velocities[k].GetRelativeDirectionTo(root));
}
}
//Trajectory data
for (int k = 0; k < 12; k++)
{
Vector3 position = currentTrajectory.Points[k].GetPosition().GetRelativePositionTo(root);
Vector3 facing = currentTrajectory.Points[k].GetDirection().GetRelativeDirectionTo(root);
Vector3 velocity = currentTrajectory.Points[k].GetVelocity().GetRelativeDirectionTo(root);
line += FormatValue(position.x);
line += FormatValue(position.z);
line += FormatValue(facing.x);
line += FormatValue(facing.z);
line += FormatValue(velocity.x);
line += FormatValue(velocity.z);
line += FormatArray(currentTrajectory.Points[k].Styles);
}
//Translational and angular root offset
BVHAnimation.BVHFrame prevFrame = animation.GetFrame(Mathf.Clamp(frame.Timestamp - 1f / (float)Framerate, 0f, animation.GetTotalTime()));
Trajectory previousTrajectory = animation.ExtractTrajectory(prevFrame, mirrored);
Matrix4x4 offset = currentTrajectory.Points[6].GetTransformation().GetRelativeTransformationTo(previousTrajectory.Points[6].GetTransformation());
line += FormatValue(offset.GetPosition().x);
line += FormatValue(offset.GetPosition().z);
line += FormatValue(Vector3.SignedAngle(Vector3.forward, offset.GetForward(), Vector3.up));
//Phase
float prev = mirrored ? animation.MirroredPhaseFunction.GetPhase(prevFrame) : animation.PhaseFunction.GetPhase(prevFrame);
float current = mirrored ? animation.MirroredPhaseFunction.GetPhase(frame) : animation.PhaseFunction.GetPhase(frame);
line += FormatValue(current);
line += FormatValue(GetPhaseUpdate(prev, current));
//Previous postures
for (int t = 0; t < 6; t++)
{
float timestamp = Mathf.Clamp(frame.Timestamp - 1f + (float)t / 6f, 0f, animation.GetTotalTime());
Matrix4x4[] previousPosture = animation.ExtractPosture(animation.GetFrame(timestamp), mirrored);
Vector3[] previousVelocities = animation.ExtractBoneVelocities(animation.GetFrame(timestamp), mirrored);
//Previous bone data
for (int k = 0; k < animation.Character.Hierarchy.Length; k++)
{
if (animation.Bones[k])
{
//Position
line += FormatVector3(previousPosture[k].GetPosition().GetRelativePositionTo(root));
//Rotation
line += FormatVector3(previousPosture[k].GetForward().GetRelativeDirectionTo(root));
line += FormatVector3(previousPosture[k].GetUp().GetRelativeDirectionTo(root));
//Bone Velocity
line += FormatVector3(previousVelocities[k].GetRelativeDirectionTo(root));
}
}
}
//Future postures
for (int t = 1; t < 6; t++)
{
float timestamp = Mathf.Clamp(frame.Timestamp + (float)t / 5f, 0f, animation.GetTotalTime());
Matrix4x4[] futurePosture = animation.ExtractPosture(animation.GetFrame(timestamp), mirrored);
Vector3[] futureVelocities = animation.ExtractBoneVelocities(animation.GetFrame(timestamp), mirrored);
//Previous bone data
for (int k = 0; k < animation.Character.Hierarchy.Length; k++)
{
if (animation.Bones[k])
{
//Position
line += FormatVector3(futurePosture[k].GetPosition().GetRelativePositionTo(root));
//Rotation
line += FormatVector3(futurePosture[k].GetForward().GetRelativeDirectionTo(root));
line += FormatVector3(futurePosture[k].GetUp().GetRelativeDirectionTo(root));
//Bone Velocity
line += FormatVector3(futureVelocities[k].GetRelativeDirectionTo(root));
}
}
}
//Postprocess
line = line.Remove(line.Length - 1);
line = line.Replace(",", ".");
return(line);
}
private IEnumerator Record()
{
Data = ScriptableObject.CreateInstance <BVHAnimation>();
Data.Character = Animation.Character;
Data.FrameTime = FrameTime;
Data.Trajectory = new Trajectory(0, Animation.Controller.Styles.Length);
Data.PhaseFunction = new BVHAnimation.BVHPhaseFunction(Data);
Data.MirroredPhaseFunction = new BVHAnimation.BVHPhaseFunction(Data);
Data.StyleFunction = new BVHAnimation.BVHStyleFunction(Data);
for (int i = 0; i < Animation.Controller.Styles.Length; i++)
{
Data.StyleFunction.AddStyle(Animation.Controller.Styles[i].Name);
}
//Data.StyleFunction.SetStyle(BVHAnimation.BVHStyleFunction.STYLE.Quadruped);
int index = 0;
while (Recording && Application.isPlaying)
{
yield return(new WaitForEndOfFrame());
//Frames
BVHAnimation.BVHFrame frame = new BVHAnimation.BVHFrame(Data, Data.GetTotalFrames() + 1, Data.GetTotalFrames() * FrameTime);
frame.Local = Data.Character.GetLocalTransformations();
frame.World = Data.Character.GetWorldTransformations();
Utility.Add(ref Data.Frames, frame);
//Trajectory
Trajectory.Point point = new Trajectory.Point(Data.Trajectory.Points.Length, Animation.Controller.Styles.Length);
point.SetTransformation(Animation.GetTrajectory().Points[60].GetTransformation());
point.SetLeftsample(Animation.GetTrajectory().Points[60].GetLeftSample());
point.SetRightSample(Animation.GetTrajectory().Points[60].GetRightSample());
point.SetSlope(Animation.GetTrajectory().Points[60].GetSlope());
for (int i = 0; i < Animation.Controller.Styles.Length; i++)
{
point.Styles[i] = Animation.GetTrajectory().Points[60].Styles[i];
}
Utility.Add(ref Data.Trajectory.Points, point);
//Phase Function
/*
* Utility.Add(ref Data.PhaseFunction.Phase, Mathf.Repeat(Animation.GetPhase() / (2f*Mathf.PI), 1f));
* Utility.Add(ref Data.PhaseFunction.Keys, index == 0 ? true : Data.PhaseFunction.Phase[index-1] > Data.PhaseFunction.Phase[index]);
* Utility.Add(ref Data.PhaseFunction.Cycle, 0f);
* Utility.Add(ref Data.PhaseFunction.NormalisedCycle, 0f);
* Utility.Add(ref Data.PhaseFunction.Velocities, 0f);
* Utility.Add(ref Data.PhaseFunction.NormalisedVelocities, 0f);
* Utility.Add(ref Data.PhaseFunction.Heights, 0f);
*/
Utility.Add(ref Data.PhaseFunction.Phase, 0f);
Utility.Add(ref Data.PhaseFunction.Keys, false);
Utility.Add(ref Data.PhaseFunction.Cycle, 0f);
Utility.Add(ref Data.PhaseFunction.NormalisedCycle, 0f);
Utility.Add(ref Data.PhaseFunction.Velocities, 0f);
Utility.Add(ref Data.PhaseFunction.NormalisedVelocities, 0f);
Utility.Add(ref Data.PhaseFunction.Heights, 0f);
Utility.Add(ref Data.PhaseFunction.RootVelocities, 0f);
Utility.Add(ref Data.PhaseFunction.NormalisedRootVelocities, 0f);
//Mirrored Phase Function
Utility.Add(ref Data.MirroredPhaseFunction.Phase, 0f);
Utility.Add(ref Data.MirroredPhaseFunction.Keys, false);
Utility.Add(ref Data.MirroredPhaseFunction.Cycle, 0f);
Utility.Add(ref Data.MirroredPhaseFunction.NormalisedCycle, 0f);
Utility.Add(ref Data.MirroredPhaseFunction.Velocities, 0f);
Utility.Add(ref Data.MirroredPhaseFunction.NormalisedVelocities, 0f);
Utility.Add(ref Data.MirroredPhaseFunction.Heights, 0f);
Utility.Add(ref Data.MirroredPhaseFunction.RootVelocities, 0f);
Utility.Add(ref Data.MirroredPhaseFunction.NormalisedRootVelocities, 0f);
//Style Function
bool styleUpdate = false;
for (int i = 0; i < Animation.Controller.Styles.Length; i++)
{
Utility.Add(ref Data.StyleFunction.Styles[i].Flags, Animation.Controller.Styles[i].Query());
Utility.Add(ref Data.StyleFunction.Styles[i].Values, Animation.GetTrajectory().Points[60].Styles[i]);
if (index == 0)
{
styleUpdate = true;
}
else
{
if (Data.StyleFunction.Styles[i].Flags[index - 1] != Data.StyleFunction.Styles[i].Flags[index])
{
styleUpdate = true;
}
}
}
Utility.Add(ref Data.StyleFunction.Keys, styleUpdate);
index += 1;
}
//Setup
Data.TimeWindow = Data.GetTotalTime();
Data.Corrections = new Vector3[Animation.Character.Hierarchy.Length];
Data.DetectSymmetry();
//Postprocess
Data.PhaseFunction.Keys[index - 1] = true;
Data.StyleFunction.Keys[index - 1] = true;
Data.PhaseFunction.Recompute();
Data.StyleFunction.Recompute();
//Finish
Recording = false;
}