public static Vector3 GetNearestPointBezierCurveArrow2D(Vector3 p0, Vector3 p1, Vector3 p2, Vector3 p3, Vector2 mousePos)
{
float distance = float.MaxValue;
Vector3 point = p0;
int segments = 20;//とりあえず計算量を考慮して固定
var step = 1f / segments;
Vector3 from = p0;
Vector3 to;
for (float t = step; t < 1; t += step)
{
to = CubicBezier.GetPoint(p0, p1, p2, p3, t);
Gizmos.DrawLine(from, to);
Vector3 tmpVec = MidD2(mousePos, from, to);
if(tmpVec.z < distance)
{
distance = tmpVec.z;
point = tmpVec;
}
from = to;
}
to = p3;
Gizmos.DrawLine(from, to);
from = CubicBezier.GetPoint(p0, p1, p2, p3, 0.5f - step);
to = CubicBezier.GetPoint(p0, p1, p2, p3, 0.5f);
DrawArrow2D(from, to);
return point;
}
public static void DrawBezierCurve2D(Vector3 p0, Vector3 p1, Vector3 p2, Vector3 p3, int segments = 20)
{
if (segments == 0) return;
var step = 1f / segments;
Vector3 from = CubicBezier.GetPoint(p0, p1, p2, p3, 0);
Vector3 to;
for (float t = step; t < 1; t += step)
{
to = CubicBezier.GetPoint(p0, p1, p2, p3, t);
Gizmos.DrawLine(from, to);
from = to;
}
to = CubicBezier.GetPoint(p0, p1, p2, p3, 1);
Gizmos.DrawLine(from, to);
}
// Update is called once per frame
protected override void Update()
{
t = overTime % 1;
index = (int)overTime - loopTime * (maxIndex);
if (index == maxIndex)
{
t = 1;
index = maxIndex - 1;
}
from = pivot + (Vector3)path[index].Anchore;
fromHandle = from + (Vector3)path[index].Handle2;
int tmpIndex = index + 1;
if (openEnded && tmpIndex == maxIndex)
{
tmpIndex = 0;
}
to = pivot + (Vector3)path[tmpIndex].Anchore;
toHandle = to + (Vector3)path[tmpIndex].Handle1;
transform.position = CubicBezier.GetPoint(from, fromHandle, toHandle, to, t);
base.Update();
}
// Update is called once per frame
protected override void Update()
{
transform.position = CubicBezier.GetPoint(startPoint.Anchore, startPoint.Anchore + startPoint.Handle2, startPoint.Anchore + endPoint.Anchore + endPoint.Handle1, startPoint.Anchore + endPoint.Anchore, t);
base.Update();
}