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);
}