private Vector3 GetCurvePoint(float distance, bool updateMapIndex)
{
int index = curveDistanceMapIndex;
float segmentDistance = platformObject.curveIndexDistanceMap[index];
if (distance > segmentDistance && index < platformObject.curveIndexDistanceMap.Count - 1)
{
index++;
if (updateMapIndex)
{
curveDistanceMapIndex = index;
}
}
float time = 0;
if (index > 0)
{
float prevDistance = platformObject.curveIndexDistanceMap[index - 1];
time = (distance - prevDistance) / (platformObject.curveIndexDistanceMap[index] - prevDistance);
}
else
{
time = distance / platformObject.curveIndexDistanceMap[index];
}
time = Mathf.Clamp01(time);
Vector3 p0, p1, p2;
if (index == 0)
{
p0 = platformObject.controlPoints[index];
}
else
{
p0 = (platformObject.controlPoints[index] + platformObject.controlPoints[index + 1]) / 2;
}
p1 = platformObject.controlPoints[index + 1];
if (index + 2 == platformObject.controlPoints.Count - 1)
{
p2 = platformObject.controlPoints[index + 2];
}
else
{
p2 = (platformObject.controlPoints[index + 1] + platformObject.controlPoints[index + 2]) / 2;
}
return(platformObject.GetTransform().TransformPoint(InfiniteRunnerStarterPackUtility.CalculateBezierPoint(p0, p1, p2, time)));
}
private void ComputeBezierCurve(bool draw /*if false, will compute length*/)
{
PlatformObject platformObject = (PlatformObject)target;
if (platformObject.controlPoints == null || platformObject.controlPoints.Count < 3)
{
platformObject.curveLength = 0;
EditorUtility.SetDirty(target);
return;
}
if (!draw)
{
platformObject.curveIndexDistanceMap = new List <float>();
}
Vector3 p0, p1, p2;
Vector3 q0, q1;
float t;
float length = 0;
Handles.color = Color.white;
Vector3 platformPosition = platformObject.transform.position;
for (int i = 0; i < platformObject.controlPoints.Count - 2; ++i)
{
if (i == 0)
{
p0 = platformObject.controlPoints[i];
}
else
{
p0 = (platformObject.controlPoints[i] + platformObject.controlPoints[i + 1]) / 2;
}
p1 = platformObject.controlPoints[i + 1];
if (i + 2 == platformObject.controlPoints.Count - 1)
{
p2 = platformObject.controlPoints[i + 2];
}
else
{
p2 = (platformObject.controlPoints[i + 1] + platformObject.controlPoints[i + 2]) / 2;
}
t = 0;
q0 = InfiniteRunnerStarterPackUtility.CalculateBezierPoint(p0, p1, p2, t);
for (int j = 1; j <= StepCount; j++)
{
t = j / (float)StepCount;
q1 = InfiniteRunnerStarterPackUtility.CalculateBezierPoint(p0, p1, p2, t);
if (draw)
{
Handles.DrawLine(platformPosition + q0, platformPosition + q1);
}
else
{
length += Vector3.Distance(q0, q1);
}
q0 = q1;
}
if (!draw)
{
platformObject.curveIndexDistanceMap.Add(length);
}
}
if (!draw)
{
platformObject.curveLength = length;
EditorUtility.SetDirty(target);
}
}
