private void OnEnable()
{
point = target as SplinePoint;
spline = point.transform.GetComponentInParent <Spline>(true);
}
public static MeshFilter CreateRoad(this MeshFilter self, Spline.Spline spline, int resolution, float width)
{
if (self.sharedMesh == null)
{
self.sharedMesh = new Mesh()
{
name = "Road"
}
}
;
points.Clear();
normals.Clear();
uvs.Clear();
triangles.Clear();
var radius = width * 0.5f;
var yCount = resolution;
var yLenght = spline.Length / yCount;
var xCount = Mathf.CeilToInt(width / yLenght);
var xLength = width / xCount;
var uvY = (spline.Length / width) / yCount;
var uvX = 1.0f / xCount;
for (int i = 0; i <= yCount; i++)
{
var point = spline.GetLocalPoint(i * yLenght);
var cross = Vector3.Cross(point.forward, point.upward).normalized;
var right = point.position - cross * radius;
points.Add(right);
normals.Add(point.upward);
var t = i * uvY;
uvs.Add(new Vector2(1, t));
var tileL = (cross * xLength);
for (int c = 1; c <= xCount; c++)
{
points.Add(right + tileL * c);
normals.Add(point.upward);
uvs.Add(new Vector2(1 - uvX * c, t));
}
}
for (int y = 0; y < yCount; y++)
{
var a = y * (xCount + 1);
for (int x = 0; x < xCount; x++)
{
int i = x + a;
triangles.Add(i);
triangles.Add(i + 1);
triangles.Add(i + xCount + 1);
triangles.Add(i + 1);
triangles.Add(i + xCount + 2);
triangles.Add(i + xCount + 1);
}
}
self.sharedMesh.Clear();
if (points.Count > 3)
{
self.sharedMesh.vertices = points.ToArray();
self.sharedMesh.normals = normals.ToArray();
self.sharedMesh.uv = uvs.ToArray();
self.sharedMesh.triangles = triangles.ToArray();
self.sharedMesh.RecalculateNormals();
}
return(self);
}
#endif
}
private void OnEnable()
{
spline = target as Spline;
}
