private void DrawTangents(Vector3[] segment, float t)
{
float tangentLength = HandleUtility.GetHandleSize(_SplineDataObject[_SplineBranchCreator.SelectedPointIndex]);
Vector3 startPoint = Bezier3DUtility.CubicCurveVector3(segment[0], segment[1], segment[2], segment[3], t + 0.1f);
Vector3 tangent = Bezier3DUtility.GetTangent(startPoint, Bezier3DUtility.CubicCurveVector3(segment[0], segment[1], segment[2], segment[3], t));
Handles.color = Color.green;
Handles.DrawLine(startPoint, startPoint + tangent * tangentLength);
}
private void DrawBiNormals(Vector3[] segment, float t)
{
float biNormalLength = HandleUtility.GetHandleSize(_SplineDataObject[_SplineBranchCreator.SelectedPointIndex]);
Vector3 startPoint = Bezier3DUtility.CubicCurveVector3(segment[0], segment[1], segment[2], segment[3], t + 0.1f);
Vector3 tangent = Bezier3DUtility.GetTangent(startPoint, Bezier3DUtility.CubicCurveVector3(segment[0], segment[1], segment[2], segment[3], t));
Vector3 biNormal = Vector3.Cross(Vector3.up, tangent).normalized;
Handles.color = Color.red;
Handles.DrawLine(startPoint, startPoint + biNormal * biNormalLength);
}
private void OnInsertButtonPressed()
{
//Last point when open
if (_SplineBranchCreator.SelectedPointIndex / 3 == _SplineDataObject.SegmentCount && !_SplineDataObject.IsClosed)
{
Undo.RecordObject(_SplineDataObject, "Add_segment");
_SplineDataObject.AddSegment(
_SplineDataObject[_SplineDataObject.PointCount - 1] +
(_SplineDataObject[_SplineDataObject.PointCount - 1] - _SplineDataObject[_SplineDataObject.PointCount - 3]).normalized *
(_SplineDataObject[_SplineDataObject.PointCount - 1] - _SplineDataObject[_SplineDataObject.PointCount - 3]).magnitude);
}
else
{
Undo.RecordObject(_SplineDataObject, "Insert_segment");
if (_SplineDataObject.IsClosed && _SplineBranchCreator.SelectedPointIndex / 3 + 1 == _SplineDataObject.SegmentCount)
{
//Last point when closed
_SplineDataObject.InsertSegment(_SplineBranchCreator.SelectedPointIndex,
Bezier3DUtility.CubicCurveVector3(
a: _SplineDataObject[_SplineBranchCreator.SelectedPointIndex],
b: _SplineDataObject[_SplineBranchCreator.SelectedPointIndex + 1],
c: _SplineDataObject[_SplineBranchCreator.SelectedPointIndex + 2],
d: _SplineDataObject[0], 0.5f));
}
else
{
_SplineDataObject.InsertSegment(_SplineBranchCreator.SelectedPointIndex,
Bezier3DUtility.CubicCurveVector3(
a: _SplineDataObject[_SplineBranchCreator.SelectedPointIndex],
b: _SplineDataObject[_SplineBranchCreator.SelectedPointIndex + 1],
c: _SplineDataObject[_SplineBranchCreator.SelectedPointIndex + 2],
d: _SplineDataObject[_SplineBranchCreator.SelectedPointIndex + 3], 0.5f));
}
}
HandleUtility.Repaint();
EditorUtility.SetDirty(_SplineDataObject);
}
