int NearestLine(out Vector3 position)
{
var near = -1;
var nearDist = float.MaxValue;
position = keyPoints[0];
var linePos = Vector3.zero;
for (int i = 0; i < keyPoints.Count; i++)
{
var j = (i + 1) % keyPoints.Count;
var line = keyPoints[j] - keyPoints[i];
var offset = mousePosition - keyPoints[i];
var dot = Vector3.Dot(line.normalized, offset);
if (dot >= 0 && dot <= line.magnitude)
{
if (isCurve[i])
{
linePos = Bezier.Curve(keyPoints[i], Bezier.Control(keyPoints[i], keyPoints[j], curvePoints[i]), keyPoints[j], dot / line.magnitude);
}
else
{
linePos = keyPoints[i] + line.normalized * dot;
}
var dist = Vector3.Distance(linePos, mousePosition);
if (dist < nearDist)
{
nearDist = dist;
position = linePos;
near = i;
}
}
}
return(near);
}
public List <Vector3> GetEdgePoints()
{
//Build the point list and calculate curves
var points = new List <Vector3>();
for (int i = 0; i < keyPoints.Count; i++)
{
if (isCurve[i])
{
//Get the curve control point
var a = keyPoints[i];
var c = keyPoints[(i + 1) % keyPoints.Count];
var b = Bezier.Control(a, c, curvePoints[i]);
//Build the curve
var count = Mathf.Ceil(1 / curveDetail);
for (int j = 0; j < count; j++)
{
var t = (float)j / count;
points.Add(Bezier.Curve(a, b, c, t));
}
}
else
{
points.Add(keyPoints[i]);
}
}
return(points);
}
void DrawSegment(int index)
{
var from = keyPoints[index];
var to = keyPoints[(index + 1) % keyPoints.Count];
if (isCurve[index])
{
var control = Bezier.Control(from, to, curvePoints[index]);
var count = Mathf.Ceil(1 / polyMesh.curveDetail);
for (int i = 0; i < count; i++)
{
Handles.DrawLine(Bezier.Curve(from, control, to, i / count), Bezier.Curve(from, control, to, (i + 1) / count));
}
}
else
{
Handles.DrawLine(from, to);
}
}