void SetTimeToLengthTables(TweenPlugPath p, int subdivisions)
{
TweenPlugPathPoint prevP = _cachePoint1, currP = _cachePoint2;
var ptCount = p.pathPointCount;
float pathLen = 0;
float incr = 1f / subdivisions;
float[] timesTable = new float[subdivisions];
float[] lengthsTable = new float[subdivisions];
GetPoint(prevP, 0, p.wps, p);
for (int i = 1; i < subdivisions + 1; ++i)
{
float perc = incr * i;
GetPoint(currP, perc, p.wps, p);
pathLen += TweenPlugPathPoint.Distance(currP, prevP, ptCount);
prevP.Copy(currP, ptCount);
timesTable[i - 1] = perc;
lengthsTable[i - 1] = pathLen;
}
// Assign
p.length = pathLen;
p.timesTable = timesTable;
p.lengthsTable = lengthsTable;
}
public void FinalizePath(TweenPlugPath p, TweenPlugPathPoint[] wps, bool isClosedPath)
{
p.controlPoints = null;
var subdivisions = (wps.Length) * p.subdivisionsXSegment; // Unused
SetTimeToLengthTables(p, subdivisions);
}
/// <summary>
/// Only uses modes: TwoDimension*. Grab orientation by looking ahead of path, returns rotation (Z) in world space.
/// </summary>
public static float GetOrientation2D(OrientMode orientMode, Transform trans, TweenPlugPath path, float t)
{
var lookatPt = GetLookAhead(trans, t, path);
if (trans.parent)
{
lookatPt = trans.parent.TransformPoint(lookatPt);
}
return(GetOrientation2D(orientMode, trans, lookatPt));
}
public void FinalizePath(TweenPlugPath p, TweenPlugPathPoint[] wps, bool isClosedPath)
{
// Add starting and ending control points (uses only one vector per control point)
int wpsLen = wps.Length;
if (p.controlPoints == null || p.controlPoints.Length != 2)
{
p.controlPoints = new TweenPlugPathControlPoint[2];
}
if (isClosedPath)
{
p.controlPoints[0] = new TweenPlugPathControlPoint(wps[wpsLen - 2], _emptyPoint);
p.controlPoints[1] = new TweenPlugPathControlPoint(wps[1], _emptyPoint);
}
else
{
p.controlPoints[0] = new TweenPlugPathControlPoint(wps[1], _emptyPoint);
var lastP = wps[wpsLen - 1];
var lastP2 = wps[wpsLen - 2];
var newPt = new TweenPlugPathPoint(lastP.vals.Length);
for (int i = 0; i < newPt.vals.Length; i++)
{
var lastPVal = lastP.vals[i];
var diffVVal = lastPVal - lastP2.vals[i];
newPt.vals[i] = lastPVal + diffVVal;
}
p.controlPoints[1] = new TweenPlugPathControlPoint(newPt, _emptyPoint);
}
// p.subdivisions = (wpsLen + 2) * p.subdivisionsXSegment;
var subdivisions = wpsLen * p.subdivisionsXSegment;
if (p.isConstantSpeed)
{
// Store time to len tables
SetTimeToLengthTables(p, subdivisions);
}
else
{
//only generate path length
SetPathLength(p, subdivisions);
}
}
private static Vector3 GetLookAhead(Transform trans, float t, TweenPlugPath path)
{
if (path.type == TweenPlugPathType.Linear)
{
// Calculate lookAhead so that it doesn't turn until it starts moving on next waypoint
return(trans.localPosition + path.wps[path.linearWPIndex].valueVector3 - path.wps[path.linearWPIndex - 1].valueVector3);
}
else
{
float lookAheadPerc = t + lookAhead;
if (lookAheadPerc > 1)
{
lookAheadPerc = (path.isClosed ? lookAheadPerc - 1 : path.type == TweenPlugPathType.Linear ? 1 : 1.00001f);
}
return(path.GetPoint(lookAheadPerc).valueVector3);
}
}
// Linear exception: also sets waypoints lengths and doesn't set lengthsTable since it's useless
void SetTimeToLengthTables(TweenPlugPath p, int subdivisions)
{
float pathLen = 0;
int wpsLen = p.wps.Length;
var ptCount = p.pathPointCount;
var prevP = p.wps[0];
for (int i = 1; i < wpsLen; i++)
{
var currP = p.wps[i];
float dist = TweenPlugPathPoint.Distance(currP, prevP, ptCount);
pathLen += dist;
prevP = currP;
}
// Assign
p.length = pathLen;
p.lengthsTable = null;
p.timesTable = null;
}
void SetPathLength(TweenPlugPath p, int subdivisions)
{
TweenPlugPathPoint prevP = _cachePoint1, currP = _cachePoint2;
var ptCount = p.pathPointCount;
float pathLen = 0;
float incr = 1f / subdivisions;
GetPoint(prevP, 0, p.wps, p);
for (int i = 1; i < subdivisions + 1; ++i)
{
float perc = incr * i;
GetPoint(currP, perc, p.wps, p);
pathLen += TweenPlugPathPoint.Distance(currP, prevP, ptCount);
prevP.Copy(currP, ptCount);
}
// Assign
p.length = pathLen;
p.timesTable = null;
p.lengthsTable = null;
}
public override float GetSpeedBasedDuration(TOptions options, float unitsXSecond, TweenPlugPath changeValue)
{
return(changeValue.length / unitsXSecond);
}
public override void SetFrom(TweenerCore <T, TweenPlugPath, TOptions> t, TweenPlugPath fromValue, bool setImmediately, bool isRelative)
{
}
public override void EvaluateAndApply(TweenPlugPathOrientOptions options, Tween t, bool isRelative, DOGetter <Vector3> getter, DOSetter <Vector3> setter, float elapsed, TweenPlugPath startValue, TweenPlugPath changeValue, float duration, bool usingInversePosition, UpdateNotice updateNotice)
{
var path = changeValue;
float pathPerc = EaseManager.Evaluate(t, elapsed, duration, t.easeOvershootOrAmplitude, t.easePeriod);
var pathPt = path.GetPoint(pathPerc);
var pt = pathPt.valueVector3;
setter(pt);
if (t.target != null)
{
SetOrientation(t.target, options, path, pathPerc);
}
}
public void GetPoint(TweenPlugPathPoint output, float perc, TweenPlugPathPoint[] wps, TweenPlugPath p)
{
int numSections = wps.Length - 1; // Considering also control points
int tSec = (int)Mathf.Floor(perc * numSections);
int currPt = numSections - 1;
if (currPt > tSec)
{
currPt = tSec;
}
float u = perc * numSections - currPt;
var aPt = currPt == 0 ? p.controlPoints[0].a : wps[currPt - 1];
var bPt = wps[currPt];
var cPt = wps[currPt + 1];
var dPt = currPt + 2 > wps.Length - 1 ? p.controlPoints[1].a : wps[currPt + 2];
var ptCount = p.pathPointCount;
for (int i = 0; i < ptCount; i++)
{
float a = aPt.vals[i], b = bPt.vals[i], c = cPt.vals[i], d = dPt.vals[i];
output.vals[i] = .5f * (
(-a + 3f * b - 3f * c + d) * (u * u * u)
+ (2f * a - 5f * b + 4f * c - d) * (u * u)
+ (-a + c) * u
+ 2f * b);
}
}
public override void EvaluateAndApply(TOptions options, Tween t, bool isRelative, DOGetter <T> getter, DOSetter <T> setter, float elapsed, TweenPlugPath startValue, TweenPlugPath changeValue, float duration, bool usingInversePosition, UpdateNotice updateNotice)
{
//TODO: figure out how to access tween's loopType
/*if(t.loopType == LoopType.Incremental && !changeValue.isClosed) {
* int increment = (t.IsComplete() ? t.CompletedLoops() - 1 : t.CompletedLoops());
* if(increment > 0) changeValue = changeValue.CloneIncremental(increment);
* }*/
float pathPerc = EaseManager.Evaluate(t, elapsed, duration, t.easeOvershootOrAmplitude, t.easePeriod);
var pt = changeValue.GetPoint(pathPerc);
var val = GetValue(pt);
setter(val);
}
// Clones this path with the given loop increment
public TweenPlugPath CloneIncremental(int loopIncrement)
{
if (_incrementalClone != null)
{
if (_incrementalIndex == loopIncrement)
{
return(_incrementalClone);
}
}
var _incCachePt = new TweenPlugPathPoint(pathPointCount);
int wpsLen = wps.Length;
int ptCount = pathPointCount;
//diff
for (int i = 0; i < ptCount; i++)
{
_incCachePt.vals[i] = wps[wpsLen - 1].vals[i] - wps[0].vals[i];
}
var incrWps = new TweenPlugPathPoint[wps.Length];
for (int i = 0; i < wpsLen; ++i)
{
incrWps[i] = new TweenPlugPathPoint(ptCount);
for (int j = 0; j < ptCount; j++)
{
incrWps[i].vals[j] = wps[i].vals[j] + (_incCachePt.vals[j] * loopIncrement); //wps[i] + (diff * loopIncrement)
}
}
int cpsLen = controlPoints.Length;
var incrCps = new TweenPlugPathControlPoint[cpsLen];
for (int i = 0; i < cpsLen; ++i)
{
var a = new TweenPlugPathPoint(ptCount);
var b = new TweenPlugPathPoint(ptCount);
//incrCps[i] = controlPoints[i] + (diff * loopIncrement);
for (int j = 0; j < ptCount; j++)
{
a.vals[j] = controlPoints[i].a.vals[j] + (_incCachePt.vals[j] * loopIncrement);
b.vals[j] = controlPoints[i].b.vals[j] + (_incCachePt.vals[j] * loopIncrement);
}
incrCps[i] = new TweenPlugPathControlPoint(a, b);
}
_incrementalClone = new TweenPlugPath();
_incrementalIndex = loopIncrement;
_incrementalClone.type = type;
_incrementalClone.subdivisionsXSegment = subdivisionsXSegment;
_incrementalClone.wps = incrWps;
_incrementalClone.controlPoints = incrCps;
_incrementalClone._cachePoint = _incCachePt;
_incrementalClone.length = length;
_incrementalClone.timesTable = timesTable;
_incrementalClone.lengthsTable = lengthsTable;
_incrementalClone._decoder = _decoder;
return(_incrementalClone);
}
/// <summary>
/// Grab orientation by looking ahead of path, returns rotation in world space.
/// </summary>
public static Quaternion GetOrientation(OrientMode orientMode, AxisFlags orientLockAxis, Transform trans, TweenPlugPath path, float t)
{
var lookatPt = GetLookAhead(trans, t, path);
if (trans.parent)
{
lookatPt = trans.parent.TransformPoint(lookatPt);
}
return(GetOrientation(orientMode, orientLockAxis, trans, lookatPt));
}
protected override void SetOrientation(object target, TweenPlugPathOrientOptions options, TweenPlugPath path, float pathPerc)
{
var body = (Rigidbody2D)target;
var trans = body.transform;
var rot = TweenPlugOrient.GetOrientation2D(options.orientMode, trans, path, pathPerc);
body.MoveRotation(rot);
}
protected override void SetOrientation(object target, TweenPlugPathOrientOptions options, TweenPlugPath path, float pathPerc)
{
var trans = (Transform)target;
trans.rotation = TweenPlugOrient.GetOrientation(options.orientMode, options.lockAxis, trans, path, pathPerc);
}
protected abstract void SetOrientation(object target, TweenPlugPathOrientOptions options, TweenPlugPath path, float pathPerc);
/// <summary>
/// Generate path points and endFrame. keyInd is the index of this key in the track.
/// </summary>
public void GeneratePath(Track track, int keyInd)
{
switch (interp)
{
case Interpolation.None:
_paths = new TweenPlugPath[0];
endFrame = keyInd + 1 < track.keys.Count ? track.keys[keyInd + 1].frame : frame;
break;
case Interpolation.Linear:
_paths = new TweenPlugPath[0];
if (keyInd + 1 < track.keys.Count)
{
var nextKey = track.keys[keyInd + 1];
endFrame = nextKey.frame;
}
else //fail-safe
{
endFrame = -1;
}
break;
case Interpolation.Curve:
//if there's more than 2 keys, and next key is curve, then it's more than 2 pts.
if (keyInd + 2 < track.keys.Count && track.keys[keyInd + 1].interp == Interpolation.Curve)
{
var pathList = new List <TweenPlugPathPoint>();
var timeList = new List <float>();
for (int i = keyInd; i < track.keys.Count; i++)
{
var key = (PathKeyBase)track.keys[i];
pathList.Add(key.GeneratePathPoint(track));
endFrame = key.frame;
if (!isConstSpeed)
{
timeList.Add(key.frame);
}
if (key.interp != Interpolation.Curve)
{
break;
}
}
//normalize frames (exclude beginning (0f) and end (1f))
if (timeList.Count > 0)
{
//remove first and last
timeList.RemoveAt(timeList.Count - 1); timeList.RemoveAt(0);
float frameCount = endFrame - frame;
if (frameCount > 0f)
{
for (int i = 0; i < timeList.Count; i++)
{
timeList[i] = (timeList[i] - frame) / frameCount;
}
}
else //fail-safe
{
for (int i = 0; i < timeList.Count; i++)
{
timeList[i] = 0f;
}
}
}
var newPath = new TweenPlugPath(TweenPlugPathType.CatmullRom, pathList.ToArray(), timeList.ToArray(), isConstSpeed, pathResolution);
newPath.Init();
_paths = new TweenPlugPath[] { newPath };
}
else
{
if (keyInd + 1 < track.keys.Count)
{
endFrame = track.keys[keyInd + 1].frame;
_paths = new TweenPlugPath[0];
}
else
{
Invalidate();
}
}
break;
}
}
public void GetPoint(TweenPlugPathPoint output, float perc, TweenPlugPathPoint[] wps, TweenPlugPath p)
{
var ptCount = p.pathPointCount;
if (perc <= 0)
{
p.linearWPIndex = 1;
output.Copy(wps[0], ptCount);
return;
}
int startPIndex = 0;
int endPIndex = 0;
int count = p.timesTable.Length;
for (int i = 1; i < count; i++)
{
if (p.timesTable[i] >= perc)
{
startPIndex = i - 1;
endPIndex = i;
break;
}
}
float startPPerc = p.timesTable[startPIndex];
float partialPerc = perc - startPPerc;
float partialLen = p.length * partialPerc;
var wp0 = wps[startPIndex];
var wp1 = wps[endPIndex];
p.linearWPIndex = endPIndex;
//output = wp0 + clamp(wp1 - wp0, partialLen)
for (int i = 0; i < ptCount; i++)
{
output.vals[i] = wp1.vals[i] - wp0.vals[i];
}
output.ClampMagnitude(partialLen, ptCount);
for (int i = 0; i < ptCount; i++)
{
output.vals[i] += wp0.vals[i];
}
}