public void computeDebugPath()
{
if (GetHasControlPoints() == false)
{
InstallSplineNodes();
}
// store settings
ePlaybackMode pbm = this.playbackMode;
ePlaybackType pbt = this.type;
// apply settings for path calculation
this.playbackMode = ePlaybackMode.computingDebugPath;
this.type = ePlaybackType.const_dt;
SetPlaybackMode(splineMgr.ePlaybackMode.computingDebugPath);
for (int i = 0; i < kDebugLength; i++)
{
Vector3 p = getPointOnCurve();
debugPath.SetPosition(i, p);
if (IsFinished() == true)
{
debugPath.SetVertexCount(i - 1);
break;
}
}
// restore values
playbackMode = pbm;
type = pbt;
}
public void eval()
{
if (playbackMode == ePlaybackMode.paused)
{
vOut = Vector3.zero;
Vector3 xp0 = ControlPoints[nHead].transform.position;
Vector3 xp1 = ControlPoints[nHead + 1].transform.position;
Vector3 xp2 = ControlPoints[nHead + 2].transform.position;
Vector3 xp3 = ControlPoints[nHead + 3].transform.position;
// update headObj
vOut = PointOnCurve(t, xp0, xp1, xp2, xp3);
if (HeadObj)
{
HeadObj.transform.position = vOut;
}
return;
}
// update state, wrap when t exceeds end of curve segment
if ((playbackMode != ePlaybackMode.oneshot_finished) && (playbackMode != ePlaybackMode.computingDebugPath_finished))
{
if (type == ePlaybackType.const_dt)
{
t += dt;
}
else if (type == ePlaybackType.const_dist)
{
// find the delta that moves the arc_length by const_dist
if (epsilon <= 0.0001f)
{
epsilon = 0.0001f;
}
//dynamicdt = epsilon;//dhdh
Vector3 tp0 = ControlPoints[nHead].transform.position;
Vector3 tp1 = ControlPoints[nHead + 1].transform.position;
Vector3 tp2 = ControlPoints[nHead + 2].transform.position;
Vector3 tp3 = ControlPoints[nHead + 3].transform.position;
float sampleDist = 0.0f;
while (sampleDist < target_arclength)
{
Vector3 sample1 = PointOnCurve(t, tp0, tp1, tp2, tp3);
Vector3 sample2 = PointOnCurve(t + dynamicdt, tp0, tp1, tp2, tp3);
Vector3 vDisplacement = (sample1 - sample2);
sampleDist = vDisplacement.magnitude;
if (sampleDist < target_arclength)
{
dynamicdt += epsilon;
}
else if (sampleDist > target_arclength)
{
dynamicdt -= epsilon;
}
}
t += dynamicdt;
}
}
if (t > 1.0f)
{
t -= 1.0f;
nHead++;
dynamicdt = epsilon;
}
// extract interpolated point from spline
//Vector3 vOut = new Vector3(0.0f, 0.0f, 0.0f);
vOut = Vector3.zero;
Vector3 p0 = ControlPoints[nHead].transform.position;
Vector3 p1 = ControlPoints[nHead + 1].transform.position;
Vector3 p2 = ControlPoints[nHead + 2].transform.position;
Vector3 p3 = ControlPoints[nHead + 3].transform.position;
// end case of path compute mode
if (playbackMode == ePlaybackMode.computingDebugPath)
{
if (nHead == (ControlPoints.Count - 4))
{
t = 0.0f;
playbackMode = ePlaybackMode.computingDebugPath_finished;
}
}
// wrap nHead once we reach end
if (nHead == (ControlPoints.Count - 4))
{
if (playbackMode == ePlaybackMode.loop)
{
t = 0.0f;
nHead = 0;
}
else if (playbackMode == ePlaybackMode.oneshot)
{
t = 0.0f;
playbackMode = ePlaybackMode.oneshot_finished;
}
else if (playbackMode == ePlaybackMode.computingDebugPath)
{
t = 0.0f;
playbackMode = ePlaybackMode.computingDebugPath_finished;
}
}
// update headObj
vOut = PointOnCurve(t, p0, p1, p2, p3);
if (HeadObj)
{
HeadObj.transform.position = vOut;
}
// update lookObj
if (TargetObj)
{
Vector3 tgtPos = Vector3.zero;
tgtPos = PointOnCurve(t + dt, p0, p1, p2, p3);
TargetObj.transform.position = tgtPos;
}
}
public void SetPlaybackMode(ePlaybackMode mode)
{
playbackMode = mode;
}