// --- 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);
}
/// <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.bendDirection = constraint.data.bendDirection;
constraint.mix = constraint.data.mix;
}
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;
}
}
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;
}
private void ReadAnimation(String name, Stream input, SkeletonData skeletonData)
{
var timelines = new ExposedList <Timeline>();
float scale = Scale;
float duration = 0;
// Slot timelines.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
int slotIndex = ReadVarint(input, true);
for (int ii = 0, nn = ReadVarint(input, true); ii < nn; ii++)
{
int timelineType = input.ReadByte();
int frameCount = ReadVarint(input, true);
switch (timelineType)
{
case SLOT_ATTACHMENT: {
AttachmentTimeline timeline = new AttachmentTimeline(frameCount);
timeline.slotIndex = slotIndex;
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
{
timeline.SetFrame(frameIndex, ReadFloat(input), ReadString(input));
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[frameCount - 1]);
break;
}
case SLOT_COLOR: {
ColorTimeline timeline = new ColorTimeline(frameCount);
timeline.slotIndex = slotIndex;
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
{
float time = ReadFloat(input);
int color = ReadInt(input);
float r = ((color & 0xff000000) >> 24) / 255f;
float g = ((color & 0x00ff0000) >> 16) / 255f;
float b = ((color & 0x0000ff00) >> 8) / 255f;
float a = ((color & 0x000000ff)) / 255f;
timeline.SetFrame(frameIndex, time, r, g, b, a);
if (frameIndex < frameCount - 1)
{
ReadCurve(input, frameIndex, timeline);
}
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[(timeline.FrameCount - 1) * ColorTimeline.ENTRIES]);
break;
}
case SLOT_TWO_COLOR: {
TwoColorTimeline timeline = new TwoColorTimeline(frameCount);
timeline.slotIndex = slotIndex;
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
{
float time = ReadFloat(input);
int color = ReadInt(input);
float r = ((color & 0xff000000) >> 24) / 255f;
float g = ((color & 0x00ff0000) >> 16) / 255f;
float b = ((color & 0x0000ff00) >> 8) / 255f;
float a = ((color & 0x000000ff)) / 255f;
int color2 = ReadInt(input); // 0x00rrggbb
float r2 = ((color2 & 0x00ff0000) >> 16) / 255f;
float g2 = ((color2 & 0x0000ff00) >> 8) / 255f;
float b2 = ((color2 & 0x000000ff)) / 255f;
timeline.SetFrame(frameIndex, time, r, g, b, a, r2, g2, b2);
if (frameIndex < frameCount - 1)
{
ReadCurve(input, frameIndex, timeline);
}
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[(timeline.FrameCount - 1) * TwoColorTimeline.ENTRIES]);
break;
}
}
}
}
// Bone timelines.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
int boneIndex = ReadVarint(input, true);
for (int ii = 0, nn = ReadVarint(input, true); ii < nn; ii++)
{
int timelineType = input.ReadByte();
int frameCount = ReadVarint(input, true);
switch (timelineType)
{
case BONE_ROTATE: {
RotateTimeline timeline = new RotateTimeline(frameCount);
timeline.boneIndex = boneIndex;
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
{
timeline.SetFrame(frameIndex, ReadFloat(input), ReadFloat(input));
if (frameIndex < frameCount - 1)
{
ReadCurve(input, frameIndex, timeline);
}
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[(frameCount - 1) * RotateTimeline.ENTRIES]);
break;
}
case BONE_TRANSLATE:
case BONE_SCALE:
case BONE_SHEAR: {
TranslateTimeline timeline;
float timelineScale = 1;
if (timelineType == BONE_SCALE)
{
timeline = new ScaleTimeline(frameCount);
}
else if (timelineType == BONE_SHEAR)
{
timeline = new ShearTimeline(frameCount);
}
else
{
timeline = new TranslateTimeline(frameCount);
timelineScale = scale;
}
timeline.boneIndex = boneIndex;
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
{
timeline.SetFrame(frameIndex, ReadFloat(input), ReadFloat(input) * timelineScale, ReadFloat(input)
* timelineScale);
if (frameIndex < frameCount - 1)
{
ReadCurve(input, frameIndex, timeline);
}
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[(frameCount - 1) * TranslateTimeline.ENTRIES]);
break;
}
}
}
}
// IK timelines.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
int index = ReadVarint(input, true);
int frameCount = ReadVarint(input, true);
IkConstraintTimeline timeline = new IkConstraintTimeline(frameCount);
timeline.ikConstraintIndex = index;
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
{
timeline.SetFrame(frameIndex, ReadFloat(input), ReadFloat(input), ReadSByte(input));
if (frameIndex < frameCount - 1)
{
ReadCurve(input, frameIndex, timeline);
}
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[(frameCount - 1) * IkConstraintTimeline.ENTRIES]);
}
// Transform constraint timelines.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
int index = ReadVarint(input, true);
int frameCount = ReadVarint(input, true);
TransformConstraintTimeline timeline = new TransformConstraintTimeline(frameCount);
timeline.transformConstraintIndex = index;
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
{
timeline.SetFrame(frameIndex, ReadFloat(input), ReadFloat(input), ReadFloat(input), ReadFloat(input), ReadFloat(input));
if (frameIndex < frameCount - 1)
{
ReadCurve(input, frameIndex, timeline);
}
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[(frameCount - 1) * TransformConstraintTimeline.ENTRIES]);
}
// Path constraint timelines.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
int index = ReadVarint(input, true);
PathConstraintData data = skeletonData.pathConstraints.Items[index];
for (int ii = 0, nn = ReadVarint(input, true); ii < nn; ii++)
{
int timelineType = ReadSByte(input);
int frameCount = ReadVarint(input, true);
switch (timelineType)
{
case PATH_POSITION:
case PATH_SPACING: {
PathConstraintPositionTimeline timeline;
float timelineScale = 1;
if (timelineType == PATH_SPACING)
{
timeline = new PathConstraintSpacingTimeline(frameCount);
if (data.spacingMode == SpacingMode.Length || data.spacingMode == SpacingMode.Fixed)
{
timelineScale = scale;
}
}
else
{
timeline = new PathConstraintPositionTimeline(frameCount);
if (data.positionMode == PositionMode.Fixed)
{
timelineScale = scale;
}
}
timeline.pathConstraintIndex = index;
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
{
timeline.SetFrame(frameIndex, ReadFloat(input), ReadFloat(input) * timelineScale);
if (frameIndex < frameCount - 1)
{
ReadCurve(input, frameIndex, timeline);
}
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[(frameCount - 1) * PathConstraintPositionTimeline.ENTRIES]);
break;
}
case PATH_MIX: {
PathConstraintMixTimeline timeline = new PathConstraintMixTimeline(frameCount);
timeline.pathConstraintIndex = index;
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
{
timeline.SetFrame(frameIndex, ReadFloat(input), ReadFloat(input), ReadFloat(input));
if (frameIndex < frameCount - 1)
{
ReadCurve(input, frameIndex, timeline);
}
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[(frameCount - 1) * PathConstraintMixTimeline.ENTRIES]);
break;
}
}
}
}
// Deform timelines.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
Skin skin = skeletonData.skins.Items[ReadVarint(input, true)];
for (int ii = 0, nn = ReadVarint(input, true); ii < nn; ii++)
{
int slotIndex = ReadVarint(input, true);
for (int iii = 0, nnn = ReadVarint(input, true); iii < nnn; iii++)
{
VertexAttachment attachment = (VertexAttachment)skin.GetAttachment(slotIndex, ReadString(input));
bool weighted = attachment.bones != null;
float[] vertices = attachment.vertices;
int deformLength = weighted ? vertices.Length / 3 * 2 : vertices.Length;
int frameCount = ReadVarint(input, true);
DeformTimeline timeline = new DeformTimeline(frameCount);
timeline.slotIndex = slotIndex;
timeline.attachment = attachment;
for (int frameIndex = 0; frameIndex < frameCount; frameIndex++)
{
float time = ReadFloat(input);
float[] deform;
int end = ReadVarint(input, true);
if (end == 0)
{
deform = weighted ? new float[deformLength] : vertices;
}
else
{
deform = new float[deformLength];
int start = ReadVarint(input, true);
end += start;
if (scale == 1)
{
for (int v = start; v < end; v++)
{
deform[v] = ReadFloat(input);
}
}
else
{
for (int v = start; v < end; v++)
{
deform[v] = ReadFloat(input) * scale;
}
}
if (!weighted)
{
for (int v = 0, vn = deform.Length; v < vn; v++)
{
deform[v] += vertices[v];
}
}
}
timeline.SetFrame(frameIndex, time, deform);
if (frameIndex < frameCount - 1)
{
ReadCurve(input, frameIndex, timeline);
}
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[frameCount - 1]);
}
}
}
// Draw order timeline.
int drawOrderCount = ReadVarint(input, true);
if (drawOrderCount > 0)
{
DrawOrderTimeline timeline = new DrawOrderTimeline(drawOrderCount);
int slotCount = skeletonData.slots.Count;
for (int i = 0; i < drawOrderCount; i++)
{
float time = ReadFloat(input);
int offsetCount = ReadVarint(input, true);
int[] drawOrder = new int[slotCount];
for (int ii = slotCount - 1; ii >= 0; ii--)
{
drawOrder[ii] = -1;
}
int[] unchanged = new int[slotCount - offsetCount];
int originalIndex = 0, unchangedIndex = 0;
for (int ii = 0; ii < offsetCount; ii++)
{
int slotIndex = ReadVarint(input, true);
// Collect unchanged items.
while (originalIndex != slotIndex)
{
unchanged[unchangedIndex++] = originalIndex++;
}
// Set changed items.
drawOrder[originalIndex + ReadVarint(input, true)] = originalIndex++;
}
// Collect remaining unchanged items.
while (originalIndex < slotCount)
{
unchanged[unchangedIndex++] = originalIndex++;
}
// Fill in unchanged items.
for (int ii = slotCount - 1; ii >= 0; ii--)
{
if (drawOrder[ii] == -1)
{
drawOrder[ii] = unchanged[--unchangedIndex];
}
}
timeline.SetFrame(i, time, drawOrder);
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[drawOrderCount - 1]);
}
// Event timeline.
int eventCount = ReadVarint(input, true);
if (eventCount > 0)
{
EventTimeline timeline = new EventTimeline(eventCount);
for (int i = 0; i < eventCount; i++)
{
float time = ReadFloat(input);
EventData eventData = skeletonData.events.Items[ReadVarint(input, true)];
Event e = new Event(time, eventData);
e.Int = ReadVarint(input, false);
e.Float = ReadFloat(input);
e.String = ReadBoolean(input) ? ReadString(input) : eventData.String;
timeline.SetFrame(i, e);
}
timelines.Add(timeline);
duration = Math.Max(duration, timeline.frames[eventCount - 1]);
}
timelines.TrimExcess();
skeletonData.animations.Add(new Animation(name, timelines, duration));
}
public SkeletonData ReadSkeletonData(Stream input)
{
if (input == null)
{
throw new ArgumentNullException("input");
}
float scale = Scale;
var skeletonData = new SkeletonData();
skeletonData.hash = ReadString(input);
if (skeletonData.hash.Length == 0)
{
skeletonData.hash = null;
}
skeletonData.version = ReadString(input);
if (skeletonData.version.Length == 0)
{
skeletonData.version = null;
}
skeletonData.width = ReadFloat(input);
skeletonData.height = ReadFloat(input);
bool nonessential = ReadBoolean(input);
if (nonessential)
{
skeletonData.fps = ReadFloat(input);
skeletonData.imagesPath = ReadString(input);
if (skeletonData.imagesPath.Length == 0)
{
skeletonData.imagesPath = null;
}
}
// Bones.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
String name = ReadString(input);
BoneData parent = i == 0 ? null : skeletonData.bones.Items[ReadVarint(input, true)];
BoneData data = new BoneData(i, name, parent);
data.rotation = ReadFloat(input);
data.x = ReadFloat(input) * scale;
data.y = ReadFloat(input) * scale;
data.scaleX = ReadFloat(input);
data.scaleY = ReadFloat(input);
data.shearX = ReadFloat(input);
data.shearY = ReadFloat(input);
data.length = ReadFloat(input) * scale;
data.transformMode = TransformModeValues[ReadVarint(input, true)];
if (nonessential)
{
ReadInt(input); // Skip bone color.
}
skeletonData.bones.Add(data);
}
// Slots.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
String slotName = ReadString(input);
BoneData boneData = skeletonData.bones.Items[ReadVarint(input, true)];
SlotData slotData = new SlotData(i, slotName, boneData);
int color = ReadInt(input);
slotData.r = ((color & 0xff000000) >> 24) / 255f;
slotData.g = ((color & 0x00ff0000) >> 16) / 255f;
slotData.b = ((color & 0x0000ff00) >> 8) / 255f;
slotData.a = ((color & 0x000000ff)) / 255f;
int darkColor = ReadInt(input); // 0x00rrggbb
if (darkColor != -1)
{
slotData.hasSecondColor = true;
slotData.r2 = ((darkColor & 0x00ff0000) >> 16) / 255f;
slotData.g2 = ((darkColor & 0x0000ff00) >> 8) / 255f;
slotData.b2 = ((darkColor & 0x000000ff)) / 255f;
}
slotData.attachmentName = ReadString(input);
slotData.blendMode = (BlendMode)ReadVarint(input, true);
skeletonData.slots.Add(slotData);
}
// IK constraints.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
IkConstraintData data = new IkConstraintData(ReadString(input));
data.order = ReadVarint(input, true);
for (int ii = 0, nn = ReadVarint(input, true); ii < nn; ii++)
{
data.bones.Add(skeletonData.bones.Items[ReadVarint(input, true)]);
}
data.target = skeletonData.bones.Items[ReadVarint(input, true)];
data.mix = ReadFloat(input);
data.bendDirection = ReadSByte(input);
skeletonData.ikConstraints.Add(data);
}
// Transform constraints.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
TransformConstraintData data = new TransformConstraintData(ReadString(input));
data.order = ReadVarint(input, true);
for (int ii = 0, nn = ReadVarint(input, true); ii < nn; ii++)
{
data.bones.Add(skeletonData.bones.Items[ReadVarint(input, true)]);
}
data.target = skeletonData.bones.Items[ReadVarint(input, true)];
data.local = ReadBoolean(input);
data.relative = ReadBoolean(input);
data.offsetRotation = ReadFloat(input);
data.offsetX = ReadFloat(input) * scale;
data.offsetY = ReadFloat(input) * scale;
data.offsetScaleX = ReadFloat(input);
data.offsetScaleY = ReadFloat(input);
data.offsetShearY = ReadFloat(input);
data.rotateMix = ReadFloat(input);
data.translateMix = ReadFloat(input);
data.scaleMix = ReadFloat(input);
data.shearMix = ReadFloat(input);
skeletonData.transformConstraints.Add(data);
}
// Path constraints
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
PathConstraintData data = new PathConstraintData(ReadString(input));
data.order = ReadVarint(input, true);
for (int ii = 0, nn = ReadVarint(input, true); ii < nn; ii++)
{
data.bones.Add(skeletonData.bones.Items[ReadVarint(input, true)]);
}
data.target = skeletonData.slots.Items[ReadVarint(input, true)];
data.positionMode = (PositionMode)Enum.GetValues(typeof(PositionMode)).GetValue(ReadVarint(input, true));
data.spacingMode = (SpacingMode)Enum.GetValues(typeof(SpacingMode)).GetValue(ReadVarint(input, true));
data.rotateMode = (RotateMode)Enum.GetValues(typeof(RotateMode)).GetValue(ReadVarint(input, true));
data.offsetRotation = ReadFloat(input);
data.position = ReadFloat(input);
if (data.positionMode == PositionMode.Fixed)
{
data.position *= scale;
}
data.spacing = ReadFloat(input);
if (data.spacingMode == SpacingMode.Length || data.spacingMode == SpacingMode.Fixed)
{
data.spacing *= scale;
}
data.rotateMix = ReadFloat(input);
data.translateMix = ReadFloat(input);
skeletonData.pathConstraints.Add(data);
}
// Default skin.
Skin defaultSkin = ReadSkin(input, skeletonData, "default", nonessential);
if (defaultSkin != null)
{
skeletonData.defaultSkin = defaultSkin;
skeletonData.skins.Add(defaultSkin);
}
// Skins.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
skeletonData.skins.Add(ReadSkin(input, skeletonData, ReadString(input), nonessential));
}
// Linked meshes.
for (int i = 0, n = linkedMeshes.Count; i < n; i++)
{
SkeletonJson.LinkedMesh linkedMesh = linkedMeshes[i];
Skin skin = linkedMesh.skin == null ? skeletonData.DefaultSkin : skeletonData.FindSkin(linkedMesh.skin);
if (skin == null)
{
throw new Exception("Skin not found: " + linkedMesh.skin);
}
Attachment parent = skin.GetAttachment(linkedMesh.slotIndex, linkedMesh.parent);
if (parent == null)
{
throw new Exception("Parent mesh not found: " + linkedMesh.parent);
}
linkedMesh.mesh.ParentMesh = (MeshAttachment)parent;
linkedMesh.mesh.UpdateUVs();
}
linkedMeshes.Clear();
// Events.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
EventData data = new EventData(ReadString(input));
data.Int = ReadVarint(input, false);
data.Float = ReadFloat(input);
data.String = ReadString(input);
skeletonData.events.Add(data);
}
// Animations.
for (int i = 0, n = ReadVarint(input, true); i < n; i++)
{
ReadAnimation(ReadString(input), input, skeletonData);
}
skeletonData.bones.TrimExcess();
skeletonData.slots.TrimExcess();
skeletonData.skins.TrimExcess();
skeletonData.events.TrimExcess();
skeletonData.animations.TrimExcess();
skeletonData.ikConstraints.TrimExcess();
skeletonData.pathConstraints.TrimExcess();
return(skeletonData);
}
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;
SpacingMode spacingMode = data.spacingMode;
bool lengthSpacing = spacingMode == SpacingMode.Length;
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 || lengthSpacing)
{
if (scale)
{
lengths = this.lengths.Resize(boneCount);
}
for (int i = 0, n = spacesCount - 1; i < n;)
{
Bone bone = bonesItems[i];
float setupLength = bone.data.length, x = setupLength * bone.a, y = setupLength * bone.c;
float length = (float)Math.Sqrt(x * x + y * y);
if (scale)
{
lengths.Items[i] = setupLength;
}
spaces.Items[++i] = (lengthSpacing ? Math.Max(0, 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, spacingMode == SpacingMode.Percent);
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 != 0)
{
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] == 0)
{
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;
}
}