/// <summary>Sets the bones and constraints to their setup pose values.</summary>
public void SetBonesToSetupPose()
{
var bonesItems = this.bones.Items;
for (int i = 0, n = bones.Count; i < n; i++)
{
bonesItems[i].SetToSetupPose();
}
var ikConstraintsItems = this.ikConstraints.Items;
for (int i = 0, n = ikConstraints.Count; i < n; i++)
{
IkConstraint constraint = ikConstraintsItems[i];
constraint.mix = constraint.data.mix;
constraint.softness = constraint.data.softness;
constraint.bendDirection = constraint.data.bendDirection;
constraint.compress = constraint.data.compress;
constraint.stretch = constraint.data.stretch;
}
var transformConstraintsItems = this.transformConstraints.Items;
for (int i = 0, n = transformConstraints.Count; i < n; i++)
{
TransformConstraint constraint = transformConstraintsItems[i];
TransformConstraintData constraintData = constraint.data;
constraint.rotateMix = constraintData.rotateMix;
constraint.translateMix = constraintData.translateMix;
constraint.scaleMix = constraintData.scaleMix;
constraint.shearMix = constraintData.shearMix;
}
var pathConstraintItems = this.pathConstraints.Items;
for (int i = 0, n = pathConstraints.Count; i < n; i++)
{
PathConstraint constraint = pathConstraintItems[i];
PathConstraintData constraintData = constraint.data;
constraint.position = constraintData.position;
constraint.spacing = constraintData.spacing;
constraint.rotateMix = constraintData.rotateMix;
constraint.translateMix = constraintData.translateMix;
}
}
// --- Path constraints.
/// <returns>May be null.</returns>
public PathConstraintData FindPathConstraint(string constraintName)
{
if (constraintName == null)
{
throw new ArgumentNullException("constraintName", "constraintName cannot be null.");
}
ExposedList <PathConstraintData> pathConstraints = this.pathConstraints;
for (int i = 0, n = pathConstraints.Count; i < n; i++)
{
PathConstraintData constraint = pathConstraints.Items[i];
if (constraint.name.Equals(constraintName))
{
return(constraint);
}
}
return(null);
}
public PathConstraint(PathConstraintData data, Skeleton skeleton)
{
if (data == null)
{
throw new ArgumentNullException("data", "data cannot be null.");
}
if (skeleton == null)
{
throw new ArgumentNullException("skeleton", "skeleton cannot be null.");
}
this.data = data;
bones = new ExposedList <Bone>(data.Bones.Count);
foreach (BoneData boneData in data.bones)
{
bones.Add(skeleton.FindBone(boneData.name));
}
target = skeleton.FindSlot(data.target.name);
position = data.position;
spacing = data.spacing;
rotateMix = data.rotateMix;
translateMix = data.translateMix;
}
/// <summary>Copy constructor.</summary>
public PathConstraint(PathConstraint constraint, Skeleton skeleton)
{
if (constraint == null)
{
throw new ArgumentNullException("constraint cannot be null.");
}
if (skeleton == null)
{
throw new ArgumentNullException("skeleton cannot be null.");
}
data = constraint.data;
bones = new ExposedList <Bone>(constraint.Bones.Count);
foreach (Bone bone in constraint.Bones)
{
bones.Add(skeleton.Bones.Items[bone.data.index]);
}
target = skeleton.slots.Items[constraint.target.data.index];
position = constraint.position;
spacing = constraint.spacing;
rotateMix = constraint.rotateMix;
translateMix = constraint.translateMix;
}
public void Update()
{
PathAttachment attachment = target.Attachment as PathAttachment;
if (attachment == null)
{
return;
}
float rotateMix = this.rotateMix, translateMix = this.translateMix;
bool translate = translateMix > 0, rotate = rotateMix > 0;
if (!translate && !rotate)
{
return;
}
PathConstraintData data = this.data;
bool percentSpacing = data.spacingMode == SpacingMode.Percent;
RotateMode rotateMode = data.rotateMode;
bool tangents = rotateMode == RotateMode.Tangent, scale = rotateMode == RotateMode.ChainScale;
int boneCount = this.bones.Count, spacesCount = tangents ? boneCount : boneCount + 1;
Bone[] bonesItems = this.bones.Items;
ExposedList <float> spaces = this.spaces.Resize(spacesCount), lengths = null;
float spacing = this.spacing;
if (scale || !percentSpacing)
{
if (scale)
{
lengths = this.lengths.Resize(boneCount);
}
bool lengthSpacing = data.spacingMode == SpacingMode.Length;
for (int i = 0, n = spacesCount - 1; i < n;)
{
Bone bone = bonesItems[i];
float setupLength = bone.data.length;
if (setupLength < PathConstraint.Epsilon)
{
if (scale)
{
lengths.Items[i] = 0;
}
spaces.Items[++i] = 0;
}
else if (percentSpacing)
{
if (scale)
{
float x = setupLength * bone.a, y = setupLength * bone.c;
float length = (float)Math.Sqrt(x * x + y * y);
lengths.Items[i] = length;
}
spaces.Items[++i] = spacing;
}
else
{
float x = setupLength * bone.a, y = setupLength * bone.c;
float length = (float)Math.Sqrt(x * x + y * y);
if (scale)
{
lengths.Items[i] = length;
}
spaces.Items[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length / setupLength;
}
}
}
else
{
for (int i = 1; i < spacesCount; i++)
{
spaces.Items[i] = spacing;
}
}
float[] positions = ComputeWorldPositions(attachment, spacesCount, tangents,
data.positionMode == PositionMode.Percent, percentSpacing);
float boneX = positions[0], boneY = positions[1], offsetRotation = data.offsetRotation;
bool tip;
if (offsetRotation == 0)
{
tip = rotateMode == RotateMode.Chain;
}
else
{
tip = false;
Bone p = target.bone;
offsetRotation *= p.a * p.d - p.b * p.c > 0 ? MathUtils.DegRad : -MathUtils.DegRad;
}
for (int i = 0, p = 3; i < boneCount; i++, p += 3)
{
Bone bone = bonesItems[i];
bone.worldX += (boneX - bone.worldX) * translateMix;
bone.worldY += (boneY - bone.worldY) * translateMix;
float x = positions[p], y = positions[p + 1], dx = x - boneX, dy = y - boneY;
if (scale)
{
float length = lengths.Items[i];
if (length >= PathConstraint.Epsilon)
{
float s = ((float)Math.Sqrt(dx * dx + dy * dy) / length - 1) * rotateMix + 1;
bone.a *= s;
bone.c *= s;
}
}
boneX = x;
boneY = y;
if (rotate)
{
float a = bone.a, b = bone.b, c = bone.c, d = bone.d, r, cos, sin;
if (tangents)
{
r = positions[p - 1];
}
else if (spaces.Items[i + 1] < PathConstraint.Epsilon)
{
r = positions[p + 2];
}
else
{
r = MathUtils.Atan2(dy, dx);
}
r -= MathUtils.Atan2(c, a);
if (tip)
{
cos = MathUtils.Cos(r);
sin = MathUtils.Sin(r);
float length = bone.data.length;
boneX += (length * (cos * a - sin * c) - dx) * rotateMix;
boneY += (length * (sin * a + cos * c) - dy) * rotateMix;
}
else
{
r += offsetRotation;
}
if (r > MathUtils.PI)
{
r -= MathUtils.PI2;
}
else if (r < -MathUtils.PI) //
{
r += MathUtils.PI2;
}
r *= rotateMix;
cos = MathUtils.Cos(r);
sin = MathUtils.Sin(r);
bone.a = cos * a - sin * c;
bone.b = cos * b - sin * d;
bone.c = sin * a + cos * c;
bone.d = sin * b + cos * d;
}
bone.appliedValid = false;
}
}