void DisplayCatmullRomSpline(int pos)
{
//Clamp to allow looping
Vector3[] pnt =
{
points[ClampListPos(pos - 1)].position,
points[pos].position,
points[ClampListPos(pos + 1)].position,
points[ClampListPos(pos + 2)].position
};
//Just assign a tmp value to this
Vector3 lastPos = Vector3.zero;
//t is always between 0 and 1 and determines the resolution of the spline
//0 is always at p1
for (float t = 0; t < 1; t += 0.1f)
{
//Find the coordinates between the control points with a Catmull-Rom spline
CatmullRomSpline spline = new CatmullRomSpline();
Vector3 newPos = spline.GetPoint(t, pnt);
//Cant display anything the first iteration
if (t == 0)
{
lastPos = newPos;
continue;
}
Gizmos.DrawLine(lastPos, newPos);
lastPos = newPos;
}
//Also draw the last line since it is always less than 1, so we will always miss it
Gizmos.DrawLine(lastPos, pnt[2]);
}
// Use this for initialization
void Start()
{
Mesh mesh = new Mesh();
CatmullRomSpline spline = new CatmullRomSpline();
Vector3[] pos = new Vector3[points.Count];
Quaternion[] rot = new Quaternion[points.Count];
for (int i = 0; i < points.Count; i++)
{
pos[i] = points[i].transform.position;
rot[i] = points[i].transform.rotation;
}
Vector3 tangent;
for (int i = 0; i < points.Count; i++)
{
tangent = Vector3.Cross(spline.GetTangent(i, pos), Vector3.forward);
if (tangent.magnitude == 0)
{
tangent = Vector3.Cross(spline.GetTangent(i, pos), Vector3.up);
}
points[i].transform.rotation = Quaternion.Euler(tangent);
}
OrientedPoint[] oPoints = new OrientedPoint[(int)(1 / resolution)];
for (float i = 0f; i < 1.0f; i += resolution)
{
if (i != 0f || i != 1f)
{
oPoints[(int)i * 10].position = spline.GetPoint(i, pos);
tangent = Vector3.Cross(spline.GetTangent(i, pos), Vector3.forward);
if (tangent.magnitude == 0)
{
tangent = Vector3.Cross(spline.GetTangent(i, pos), Vector3.up);
}
oPoints[(int)i * 10].rotation = Quaternion.Euler(tangent);
}
}
Vector2[] verts = { new Vector2(0, 0), new Vector2(1, 0) };
Vector2[] normals = { new Vector2(0, 1), new Vector2(0, 1) };
int[] lines = { 0, 1 };
Shape shape = new Shape(verts, normals, lines);
Extrude extrusao = new Extrude(ref mesh, shape, oPoints);
this.GetComponent <MeshFilter>().sharedMesh = mesh;
}
private Vector3 ShowPoint(int index)
{
Vector3 point = t.TransformPoint(spline.GetPoint(index));
float firstPoint = index == 0 ? 2f : 1f;
if (Handles.Button(point, q, 0.2f * firstPoint, 0.6f, Handles.DotCap))
{
selectedIndex = index;
}
Handles.color = Color.gray;
if (selectedIndex == index)
{
EditorGUI.BeginChangeCheck();
point = Handles.DoPositionHandle(point, q);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(spline, "CatmullRom Moved");
EditorUtility.SetDirty(spline);
spline.SetPoint(index, t.InverseTransformPoint(point));
}
}
return(point);
}
public static Vector3 SmoothTravel(this Vector3[] points, float t)
{
return(CatmullRomSpline.GetPoint(points, t, false));
}
public void OnSceneGUI()
{
spline = target as CatmullRomSpline;
t = spline.transform;
q = Tools.pivotRotation == PivotRotation.Local ? t.rotation : Quaternion.identity;
/* Draw control points for each curve */
for (int i = 0; i < spline.Curves; i += 3)
{
Vector3 point0 = ShowPoint(i);
Vector3 point1 = ShowPoint(i + 1);
Vector3 point2 = ShowPoint(i + 2);
Vector3 point3 = ShowPoint(i + 3);
Handles.color = Color.gray;
Handles.DrawLine(point0, point1);
Handles.DrawLine(point1, point2);
Handles.DrawLine(point2, point3);
}
/* Draw the curve */
for (int i = 0; i < spline.ControlPointsCount; ++i)
{
if ((i == 0 || i >= spline.ControlPointsCount - 2) && !spline.Loop)
{
continue;
}
else
{
int iMinusOne = i - 1, iPlusOne = i + 1, iPlusTwo = i + 2, points = spline.ControlPointsCount;
/* We only care on negative values */
if (i == 0)
{
iMinusOne = spline.ControlPointsCount - 1;
}
/* Handle the overflow by modding around the array */
iPlusOne = (i + 1) % points;
iPlusTwo = (i + 2) % points;
Vector3 p0 = t.TransformPoint(spline.GetPoint(iMinusOne));
Vector3 p1 = t.TransformPoint(spline.GetPoint(i));
Vector3 p2 = t.TransformPoint(spline.GetPoint(iPlusOne));
Vector3 p3 = t.TransformPoint(spline.GetPoint(iPlusTwo));
Vector3 startPoint = t.TransformPoint(spline.GetPoint(i));
Handles.color = Color.green;
Vector3 endPoint;
for (int j = 0; j < steps; ++j)
{
float norm = j / (float)steps;
endPoint = spline.GetCurvePoint(norm, p0, p1, p2, p3);
Handles.DrawLine(startPoint, endPoint);
startPoint = endPoint;
}
endPoint = spline.GetCurvePoint(1, p0, p1, p2, p3);
Handles.DrawLine(startPoint, endPoint);
}
}
}