void Update()
{
//It only makes sense for us to do Catmull-Rom interpolation with at least 4 points.
if (points.Count >= 4)
{
t = Mathf.Min(t + Time.deltaTime / segmentTime, 1.0f);
int p1 = currentIndex;
int p0 = p1 - 1;
if (p0 < 0)
{
p0 = points.Count - 1;
}
int p2 = p1 + 1;
if (p2 >= points.Count)
{
p2 = 0;
}
int p3 = p2 + 1;
if (p3 >= points.Count)
{
p3 = 0;
}
transform.position = CatmullDemo_COMPLETED.Catmull(points[p0].position,
points[p1].position,
points[p2].position,
points[p3].position, t);
if (t >= 1.0f)
{
StartSegment(currentIndex + 1);
}
}
}
void Update()
{
//It only makes sense for us to do Catmull-Rom interpolation with at least 4 points.
//We also need to check that there is at least some length to the curve we made.
if (points.Count >= 4 && totalCurveLength > 0.0f)
{
//Update the total distance we should have travelled based on speed.
distanceTravelled += speed * Time.deltaTime;
//If we exceed the total length of the curve, need to loop around.
if (distanceTravelled >= totalCurveLength)
{
curSegment = 0;
curSample = 0;
while (distanceTravelled > totalCurveLength)
{
distanceTravelled -= totalCurveLength;
}
}
//Find our segment/sample indices.
//We can stop when the *next* sample is further than we need to be.
bool correctIndices = curveTable[curSegment].samples[curSample + 1].accumulated > distanceTravelled;
while (!correctIndices)
{
++curSample;
if (curSample >= samples)
{
curSample = 0;
++curSegment;
if (curSegment >= curveTable.Count)
{
curSegment = 0;
}
}
correctIndices = curveTable[curSegment].samples[curSample + 1].accumulated > distanceTravelled;
}
//Find the "inter-sample" t-value using inverse LERP.
float insideT = MathUtility.InvLERP(distanceTravelled,
curveTable[curSegment].samples[curSample].accumulated,
curveTable[curSegment].samples[curSample + 1].accumulated);
//Find the t-value to use for interpolation by LERPing sample t-values.
float t = Mathf.Lerp(curveTable[curSegment].samples[curSample].t,
curveTable[curSegment].samples[curSample + 1].t,
insideT);
//Figure out the indices for the points to pass to Catmull.
int p1 = curSegment;
int p0 = p1 - 1;
if (p0 < 0)
{
p0 = points.Count - 1;
}
int p2 = p1 + 1;
if (p2 >= points.Count)
{
p2 = 0;
}
int p3 = p2 + 1;
if (p3 >= points.Count)
{
p3 = 0;
}
transform.position = CatmullDemo_COMPLETED.Catmull(points[p0].position,
points[p1].position,
points[p2].position,
points[p3].position, t);
}
}
