// Align bone with direction.
private void AlignWithAxis(
BoneTransformation bodyPart,
Vector3 start,
Vector3 end,
string axis)
{
Vector3 axisAlign = Vector3.zero;
if (axis == "x")
{
axisAlign = bodyPart.bodyPart.right;
}
else if (axis == "-x")
{
axisAlign = -bodyPart.bodyPart.right;
}
else if (axis == "y")
{
axisAlign = -bodyPart.bodyPart.up;
}
else if (axis == "-y")
{
axisAlign = bodyPart.bodyPart.up;
}
// Allign bone with appropriate direction determined by joints.
Vector3 v = end - start;
var q = UnityEngine.Quaternion.FromToRotation(axisAlign, v);
bodyPart.bodyPart.rotation = q * bodyPart.bodyPart.rotation;
}
// Finds scale factor for given bone/part of body.
private float FindBoneScaleFactor(BodyParts b)
{
if (bodyPartCache.ContainsKey(b))
{
BoneTransformation bodyPart = bodyPartCache[b].Find(item => item.action == BoneTransformation.Transformations.ScaleBetweenJoints || item.action == BoneTransformation.Transformations.ScaleBetweenJointAndMiddleJoints);
if (bodyPart != null)
{
JointId fromJoint = bodyPart.joints[0];
JointId toJoint = bodyPart.joints[1];
Vector3 start = jointCache[fromJoint].transformation.position;
Vector3 end = jointCache[toJoint].transformation.position;
string axis = bodyPart.aligningAxis;
float size = bodyPart.originalSize;
MeshRenderer renderer = bodyPart.bodyPart.gameObject.GetComponent <MeshRenderer>();
if (renderer != null)
{
float distance = Vector3.Distance(end, start);
float scale = distance / size;
return(scale);
}
}
}
return(0.0f);
}
// Move/scale/align body parts.
// Move/scale/align body parts.
private void MoveBones()
{
foreach (KeyValuePair <BodyParts, List <BoneTransformation> > entry in bodyPartCache)
{
foreach (BoneTransformation transformation in entry.Value)
{
BoneTransformation bodyPart = transformation;
if (bodyPart.action == BoneTransformation.Transformations.AttachToJoint)
{
AttachToJointTransformation(entry.Key, bodyPart);
}
else if (bodyPart.action == BoneTransformation.Transformations.AttachToPositionJointAndMiddleJoints)
{
AttachToPositionJointAndMiddleJointsTransformation(entry.Key, bodyPart);
}
else if (bodyPart.action == BoneTransformation.Transformations.ScaleBetweenJoints)
{
ScaleBetweenJointsTransformation(bodyPart);
}
else if (bodyPart.action == BoneTransformation.Transformations.ScaleBetweenJointAndMiddleJoints)
{
ScaleBetweenJointAndMiddleJointsTransformation(bodyPart);
}
else if (bodyPart.action == BoneTransformation.Transformations.AlignJointToJoint)
{
AlignTwoJointsTransformation(bodyPart);
}
else if (bodyPart.action == BoneTransformation.Transformations.AlignJointToMiddleJoints)
{
AlignJointToMiddleJointsTransformation(bodyPart);
}
}
}
}
// Move object relativelly to attached.
private void AttachToJointTransformation(
BodyParts bodyPartKey,
BoneTransformation bodyPart)
{
JointId attachedToJoint = bodyPart.joints[0];
Vector3 delta = initialBodyPartPositions[bodyPartKey] - initialJointPositions[attachedToJoint];
bodyPart.bodyPart.position = jointCache[attachedToJoint].transformation.position + delta;
}
// TODO refactor tobe one with AlignWithAxis.
// Align object by given axis with another objects.
private void AlignTransformation(BoneTransformation bodyPart)
{
JointId fromJoint = bodyPart.joints[0];
JointId toJoint = bodyPart.joints[1];
Vector3 start = jointCache[fromJoint].transformation.position;
Vector3 end = jointCache[toJoint].transformation.position;
string axis = bodyPart.aligningAxis;
AlignWithAxis(bodyPart, start, end, axis);
}
private void AlignJointToMiddleJointsTransformation(BoneTransformation bodyPart)
{
JointId fromJoint = bodyPart.joints[0];
JointId middleJoint1 = bodyPart.joints[1];
JointId middleJoint2 = bodyPart.joints[2];
Vector3 start = jointCache[fromJoint].transformation.position;
Vector3 end = (jointCache[middleJoint1].transformation.position + jointCache[middleJoint2].transformation.position) / 2;
string axis = bodyPart.aligningAxis;
AlignWithAxis(bodyPart, start, end, axis);
}
// Rotate and scale gameobject by x axis between positions.
private void ScaleBetweenJointAndMiddleJointsTransformation(BoneTransformation bodyPart)
{
JointId fromJoint = bodyPart.joints[0];
JointId middleJoint1 = bodyPart.joints[1];
JointId middleJoint2 = bodyPart.joints[2];
Vector3 start = jointCache[fromJoint].transformation.position;
Vector3 end = (jointCache[middleJoint1].transformation.position + jointCache[middleJoint2].transformation.position) / 2;
string axis = bodyPart.aligningAxis;
float size = bodyPart.originalSize;
ScaleBone(bodyPart, start, end, axis, size);
}
private void AttachToPositionJointAndMiddleJointsTransformation(
BodyParts bodyPartKey,
BoneTransformation bodyPart)
{
JointId singleJoint = bodyPart.joints[0];
JointId middleJoint1 = bodyPart.joints[1];
JointId middleJoint2 = bodyPart.joints[2];
Vector3 singleJointPosition = jointCache[singleJoint].transformation.position;
Vector3 middleJointPosition = (jointCache[middleJoint1].transformation.position + jointCache[middleJoint2].transformation.position) / 2.0f;
bodyPart.bodyPart.position = (singleJointPosition + middleJointPosition) / 2.0f;
}
// Rotate and scale gameobject by x axis between positions.
private void ScaleTransformation(BoneTransformation bodyPart)
{
JointId fromJoint = bodyPart.joints[0];
JointId toJoint = bodyPart.joints[1];
Vector3 start = jointCache[fromJoint].transformation.position;
Vector3 end = jointCache[toJoint].transformation.position;
string axis = bodyPart.aligningAxis;
float size = bodyPart.originalSize;
SetBoneToPosition(bodyPart, start, end);
AlignWithAxis(bodyPart, start, end, axis);
ScaleBone(bodyPart, start, end, axis, size);
}
// Scale bone to reflect new size between joints.
private void ScaleBone(
BoneTransformation bodyPart,
Vector3 start,
Vector3 end,
string axis,
float size)
{
MeshRenderer renderer = bodyPart.bodyPart.gameObject.GetComponent <MeshRenderer>();
if (renderer != null)
{
float distance = Vector3.Distance(end, start);
float scale = distance / size;
float scaleX = 1.0f;
float scaleY = 1.0f;
float scaleZ = 1.0f;
if (axis.Contains("x"))
{
scaleX = scale;
}
if (axis.Contains("y"))
{
scaleY = scale;
}
if (axis.Contains("z"))
{
scaleZ = scale;
}
Vector3 origScale = bodyPart.originalLocalScale;
bodyPart.bodyPart.localScale = new Vector3(
origScale.x * scaleX,
origScale.y * scaleY,
origScale.z * scaleZ);
}
}
// Set position of bone to the middle of joints.
private void SetBoneToPosition(BoneTransformation bodyPart, Vector3 start, Vector3 end)
{
bodyPart.bodyPart.position = (start + end) / 2;
}