public static bool IsNearBezierTest(Vector2 p, Drawing.BezierCurve c, float accuracy, float maxDist)
{
Vector2 prepoint = c.Get(0);
for (float i = accuracy; i < 1; i += accuracy)
{
var point = c.Get(i);
float d = (p - point).sqrMagnitude;
float d2 = (prepoint - point + new Vector2(maxDist, maxDist)).sqrMagnitude;
if (d <= d2 * 2)
return true;
}
return false;
}
public static Vector2 NearestPointOnBezier(Vector2 p, Drawing.BezierCurve c, float accuracy, bool doubleAc)
{
float minDist = Mathf.Infinity;
float minT = 0;
Vector2 minP = Vector2.zero;
for (float i = 0; i < 1; i += accuracy)
{
var point = c.Get(i);
float d = (p - point).sqrMagnitude;
if (d < minDist)
{
minDist = d;
minT = i;
minP = point;
}
}
if (!doubleAc)
{
return minP;
}
float st = Mathf.Clamp01(minT - accuracy);
float en = Mathf.Clamp01(minT + accuracy);
for (var i = st; i < en; i += accuracy / 10)
{
var point = c.Get(i);
float d = (p - point).sqrMagnitude;
if (d < minDist)
{
minDist = d;
minT = i;
minP = point;
}
}
return minP;
}
