private static void RenamePoints(BezierCurve3D curve)
{
for (int i = 0; i < curve.KeyPointsCount; i++)
{
curve.KeyPoints[i].name = "Point " + i;
}
}
/// <summary>
/// Add a key point at a specified index
/// </summary>
/// <param name="index">The index at which the key point will be added</param>
/// <returns>The new key point</returns>
public BezierPoint3D AddKeyPointAt(int index)
{
BezierPoint3D newPoint = new GameObject("Point " + this.KeyPoints.Count, typeof(BezierPoint3D)).GetComponent <BezierPoint3D>();
newPoint.Curve = this;
newPoint.transform.parent = this.transform;
newPoint.transform.localRotation = Quaternion.identity;
if (this.KeyPointsCount == 0 || this.KeyPointsCount == 1)
{
newPoint.LocalPosition = Vector3.zero;
}
else
{
if (index == 0)
{
newPoint.Position = (this.KeyPoints[0].Position - this.KeyPoints[1].Position).normalized + this.KeyPoints[0].Position;
}
else if (index == this.KeyPointsCount)
{
newPoint.Position = (this.KeyPoints[index - 1].Position - this.KeyPoints[index - 2].Position).normalized + this.KeyPoints[index - 1].Position;
}
else
{
newPoint.Position = BezierCurve3D.GetPointOnCubicCurve(0.5f, this.KeyPoints[index - 1], this.KeyPoints[index]);
}
}
this.KeyPoints.Insert(index, newPoint);
return(newPoint);
}
public Quaternion GetRotation(float time, Vector3 up)
{
BezierPoint3D startPoint;
BezierPoint3D endPoint;
float timeRelativeToSegment;
this.GetCubicSegment(time, out startPoint, out endPoint, out timeRelativeToSegment);
return(BezierCurve3D.GetRotationOnCubicCurve(timeRelativeToSegment, up, startPoint, endPoint));
}
public Vector3 GetNormal(float time, Vector3 up)
{
BezierPoint3D startPoint;
BezierPoint3D endPoint;
float timeRelativeToSegment;
this.GetCubicSegment(time, out startPoint, out endPoint, out timeRelativeToSegment);
return(BezierCurve3D.GetNormalOnCubicCurve(timeRelativeToSegment, up, startPoint, endPoint));
}
/// <summary>
/// Evaluates a position along the curve at a specified normalized time [0, 1]
/// </summary>
/// <param name="time">The normalized length at which we want to get a position [0, 1]</param>
/// <returns>The evaluated Vector3 position</returns>
public Vector3 GetPoint(float time)
{
// The evaluated points is between these two points
BezierPoint3D startPoint;
BezierPoint3D endPoint;
float timeRelativeToSegment;
this.GetCubicSegment(time, out startPoint, out endPoint, out timeRelativeToSegment);
return(BezierCurve3D.GetPointOnCubicCurve(timeRelativeToSegment, startPoint, endPoint));
}
private static void AddDefaultPoints(BezierCurve3D curve)
{
BezierPoint3D startPoint = curve.AddKeyPoint();
startPoint.LocalPosition = new Vector3(-1f, 0f, 0f);
startPoint.LeftHandleLocalPosition = new Vector3(-0.35f, -0.35f, 0f);
BezierPoint3D endPoint = curve.AddKeyPoint();
endPoint.LocalPosition = new Vector3(1f, 0f, 0f);
endPoint.LeftHandleLocalPosition = new Vector3(-0.35f, 0.35f, 0f);
}
public float GetApproximateLength()
{
float length = 0;
int subCurveSampling = (this.Sampling / (this.KeyPointsCount - 1)) + 1;
for (int i = 0; i < this.KeyPointsCount - 1; i++)
{
length += BezierCurve3D.GetApproximateLengthOfCubicCurve(this.KeyPoints[i], this.KeyPoints[i + 1], subCurveSampling);
}
return(length);
}
public static void DrawPointsSceneGUI(BezierCurve3D curve, BezierPoint3D exclude = null)
{
for (int i = 0; i < curve.KeyPointsCount; i++)
{
if (curve.KeyPoints[i] == exclude)
{
continue;
}
BezierPoint3DEditor.handleCapSize = BezierPoint3DEditor.CircleCapSize;
BezierPoint3DEditor.DrawPointSceneGUI(curve.KeyPoints[i]);
}
}
public static void DrawPointsSceneGUI(BezierCurve3D curve, BezierPoint3D exclude = null)
{
for (int i = 0; i < curve.KeyPointsCount; i++)
{
if (curve.KeyPoints[i] == exclude)
{
continue;
}
BezierPoint3DEditor.handleCapSize = BezierPoint3DEditor.CircleCapSize;
BezierPoint3DEditor.DrawPointSceneGUI(curve.KeyPoints[i]);
}
}
private static bool RemoveKeyPointAt(BezierCurve3D curve, int index)
{
if (curve.KeyPointsCount < 2)
{
return(false);
}
var point = curve.KeyPoints[index];
Undo.IncrementCurrentGroup();
Undo.RegisterCompleteObjectUndo(curve, "Save Curve");
curve.KeyPoints.RemoveAt(index);
RenamePoints(curve);
//Undo.RegisterCompleteObjectUndo(curve, "Save Curve");
Undo.DestroyObjectImmediate(point.gameObject);
return(true);
}
protected virtual void OnEnable()
{
this.curve = (BezierCurve3D)this.target;
if (curve.KeyPointsCount < 2)
{
while (curve.KeyPointsCount != 0)
{
curve.RemoveKeyPointAt(this.curve.KeyPointsCount - 1);
}
BezierCurve3DEditor.AddDefaultPoints(this.curve);
}
this.keyPoints = new ReorderableList(this.serializedObject, serializedObject.FindProperty("keyPoints"), true, true, false, false);
this.keyPoints.drawElementCallback = this.DrawElementCallback;
this.keyPoints.drawHeaderCallback =
(Rect rect) =>
{
EditorGUI.LabelField(rect, string.Format("Points: {0}", this.keyPoints.serializedProperty.arraySize), EditorStyles.boldLabel);
};
}
protected virtual void OnEnable()
{
this.curve = (BezierCurve3D)this.target;
if (curve.KeyPointsCount < 2)
{
while (curve.KeyPointsCount != 0)
{
curve.RemoveKeyPointAt(this.curve.KeyPointsCount - 1);
}
BezierCurve3DEditor.AddDefaultPoints(this.curve);
}
this.keyPoints = new ReorderableList(this.serializedObject, serializedObject.FindProperty("keyPoints"), true, true, false, false);
this.keyPoints.drawElementCallback = this.DrawElementCallback;
this.keyPoints.drawHeaderCallback =
(Rect rect) =>
{
EditorGUI.LabelField(rect, string.Format("Reorderable List | Points: {0}", this.keyPoints.serializedProperty.arraySize), EditorStyles.boldLabel);
};
}
private static BezierPoint3D AddKeyPointAt(BezierCurve3D curve, int index)
{
BezierPoint3D newPoint = new GameObject("Point " + curve.KeyPointsCount, typeof(BezierPoint3D)).GetComponent <BezierPoint3D>();
newPoint.transform.parent = curve.transform;
newPoint.transform.localRotation = Quaternion.identity;
newPoint.Curve = curve;
if (curve.KeyPointsCount == 0 || curve.KeyPointsCount == 1)
{
newPoint.LocalPosition = Vector3.zero;
}
else
{
if (index == 0)
{
newPoint.Position = (curve.KeyPoints[0].Position - curve.KeyPoints[1].Position).normalized + curve.KeyPoints[0].Position;
}
else if (index == curve.KeyPointsCount)
{
newPoint.Position = (curve.KeyPoints[index - 1].Position - curve.KeyPoints[index - 2].Position).normalized + curve.KeyPoints[index - 1].Position;
}
else
{
newPoint.Position = BezierCurve3D.GetPointOnCubicCurve(0.5f, curve.KeyPoints[index - 1], curve.KeyPoints[index]);
}
}
Undo.IncrementCurrentGroup();
Undo.RegisterCreatedObjectUndo(newPoint.gameObject, "Create Point");
Undo.RegisterCompleteObjectUndo(curve, "Save Curve");
curve.KeyPoints.Insert(index, newPoint);
RenamePoints(curve);
//Undo.RegisterCompleteObjectUndo(curve, "Save Curve");
return(newPoint);
}
public void GetCubicSegment(float time, out BezierPoint3D startPoint, out BezierPoint3D endPoint, out float timeRelativeToSegment)
{
startPoint = null;
endPoint = null;
timeRelativeToSegment = 0f;
float subCurvePercent = 0f;
float totalPercent = 0f;
float approximateLength = this.GetApproximateLength();
int subCurveSampling = (this.Sampling / (this.KeyPointsCount - 1)) + 1;
for (int i = 0; i < this.KeyPointsCount - 1; i++)
{
subCurvePercent = BezierCurve3D.GetApproximateLengthOfCubicCurve(this.KeyPoints[i], this.KeyPoints[i + 1], subCurveSampling) / approximateLength;
if (subCurvePercent + totalPercent > time)
{
startPoint = this.KeyPoints[i];
endPoint = this.KeyPoints[i + 1];
break;
}
totalPercent += subCurvePercent;
}
if (endPoint == null)
{
// If the evaluated point is very near to the end of the curve we are in the last segment
startPoint = this.KeyPoints[this.KeyPointsCount - 2];
endPoint = this.KeyPoints[this.KeyPointsCount - 1];
// We remove the percentage of the last sub-curve
totalPercent -= subCurvePercent;
}
timeRelativeToSegment = (time - totalPercent) / subCurvePercent;
}
private static BezierPoint3D AddKeyPointAt(BezierCurve3D curve, int index)
{
BezierPoint3D newPoint = new GameObject("Point " + curve.KeyPointsCount, typeof(BezierPoint3D)).GetComponent<BezierPoint3D>();
newPoint.transform.parent = curve.transform;
newPoint.transform.localRotation = Quaternion.identity;
newPoint.Curve = curve;
if (curve.KeyPointsCount == 0 || curve.KeyPointsCount == 1)
{
newPoint.LocalPosition = Vector3.zero;
}
else
{
if (index == 0)
{
newPoint.Position = (curve.KeyPoints[0].Position - curve.KeyPoints[1].Position).normalized + curve.KeyPoints[0].Position;
}
else if (index == curve.KeyPointsCount)
{
newPoint.Position = (curve.KeyPoints[index - 1].Position - curve.KeyPoints[index - 2].Position).normalized + curve.KeyPoints[index - 1].Position;
}
else
{
newPoint.Position = BezierCurve3D.GetPointOnCubicCurve(0.5f, curve.KeyPoints[index - 1], curve.KeyPoints[index]);
}
}
Undo.IncrementCurrentGroup();
Undo.RegisterCreatedObjectUndo(newPoint.gameObject, "Create Point");
Undo.RegisterCompleteObjectUndo(curve, "Save Curve");
curve.KeyPoints.Insert(index, newPoint);
RenamePoints(curve);
//Undo.RegisterCompleteObjectUndo(curve, "Save Curve");
return newPoint;
}
private static void AddDefaultPoints(BezierCurve3D curve)
{
BezierPoint3D startPoint = curve.AddKeyPoint();
startPoint.LocalPosition = new Vector3(-1f, 0f, 0f);
startPoint.LeftHandleLocalPosition = new Vector3(-0.35f, -0.35f, 0f);
BezierPoint3D endPoint = curve.AddKeyPoint();
endPoint.LocalPosition = new Vector3(1f, 0f, 0f);
endPoint.LeftHandleLocalPosition = new Vector3(-0.35f, 0.35f, 0f);
}
private static bool RemoveKeyPointAt(BezierCurve3D curve, int index)
{
if (curve.KeyPointsCount < 2)
{
return false;
}
var point = curve.KeyPoints[index];
Undo.IncrementCurrentGroup();
Undo.RegisterCompleteObjectUndo(curve, "Save Curve");
curve.KeyPoints.RemoveAt(index);
RenamePoints(curve);
//Undo.RegisterCompleteObjectUndo(curve, "Save Curve");
Undo.DestroyObjectImmediate(point.gameObject);
return true;
}
private static void RenamePoints(BezierCurve3D curve)
{
for (int i = 0; i < curve.KeyPointsCount; i++)
{
curve.KeyPoints[i].name = "Point " + i;
}
}