public override bool Snap(Vector2 input, out Vector2 output)
{
float angle = GeomUtil.TwoPointAngle(point, input);
//最も近い放射角度を求める
float nearAngle = 0f;
float halfDelta = deltaAngle * 0.5f;
for (int i = 0; i < angles.Length; ++i)
{
if ((angles[i] - halfDelta) < angle && angle < (angles[i] + halfDelta))
{
nearAngle = angles[i];
break;
}
}
//線上の射影からスナップ座標を求める
Vector2 p, q;
p = GeomUtil.DegToVector2(nearAngle);
q = input - point;
float dot = GeomUtil.Dot(p, q);
float projection = dot / p.magnitude; //射影距離
output = p.normalized * projection + point;
//スナップ座標との距離を測る
if ((output - input).magnitude <= snapForce)
{
return(true);
}
else
{
return(false);
}
}
public override bool Snap(Vector2 input, out Vector2 output)
{
//スナップ座標を求める
Vector2 p, q;
Vector2 snapPoint;
//a側
p = b - a;
q = input - a;
float aDot = GeomUtil.Dot(p, q);
if (aDot <= 0)
{
snapPoint = a;
}
else
{
//b側
p = a - b;
q = input - b;
float bDot = GeomUtil.Dot(p, q);
if (bDot <= 0)
{
snapPoint = b;
}
else
{
//垂線の直交座標
float projection = bDot / p.magnitude; //射影距離
snapPoint = p.normalized * projection + b;
}
}
output = snapPoint;
//スナップ座標との距離を測る
if ((snapPoint - input).magnitude <= snapForce)
{
return(true);
}
else
{
return(false);
}
}
