private static void DrawSelectedPointHandles(int selectedId, Vector3 handlePos, float handleSize)
{
PathPoint point = _currentPath.pathData[selectedId];
Handles.color = Color.yellow;
if (Tools.current != Tool.Rotate)
{
//Draw tangents handles
for (int i = 0; i < 2; i++)
{
Vector3 tangentPos = CurveSpaceToWorldSpace(point.GetObjectSpaceTangent((PathTangentType)i));
Handles.DrawAAPolyLine(6, tangentPos, handlePos);
if (Handles.Button(tangentPos, Quaternion.identity, POINT_HANDLE_SIZE * handleSize, POINT_HANDLE_SIZE * 1.1f * handleSize, Handles.SphereHandleCap))
{
_selectedTangent = (PathTangentType)i;
}
}
}
if (_selectedTangent < 0) //If no tangent is selected
{
switch (Tools.current)
{
case Tool.Rotate:
//Rotate the point roll and tangents
SetPointRotation(_currentPath.pathData[selectedId]);
break;
case Tool.Scale:
//Scale the point
SetPointScale(handlePos, _currentPath.pathData[selectedId]);
break;
default:
//Moves curve the point
point.position = MovePoint(handlePos);
break;
}
}
else
{
//Moves the curve tangent point
PathTangentType oppositeTangent = (PathTangentType)(1 - ((int)_selectedTangent));
//Edits the position of the selected tangent
Vector3 tangentPos = CurveSpaceToWorldSpace(point.GetObjectSpaceTangent((PathTangentType)_selectedTangent));
Vector3 newPos = MovePoint(tangentPos);
bool mirrorScale = !Event.current.alt;
_currentPath.pathData[selectedId].SetObjectSpaceTangent(_selectedTangent, newPos, true, mirrorScale);
}
}
private void DrawBezierCurve()
{
int curves = _currentPath.pathData.Length - (_currentPath.loopCurve ? 0 : 1);
Matrix4x4 transform = Matrix4x4.TRS(_currentPath.transform.position, _currentPath.transform.rotation, _currentPath.transform.lossyScale);
for (int i = 0; i < curves; i++)
{
PathPoint p0 = _currentPath.pathData[i];
PathPoint p1;
if (i < _currentPath.pathData.Length - 1)
{
p1 = _currentPath.pathData[i + 1];
}
else
{
p1 = _currentPath.pathData[0];
}
Color bezierColor = !p0.isEmpty ? Color.green : new Color(0.5f, 0.5f, 0.5f, 0.2f);
Handles.DrawBezier(
transform.MultiplyPoint3x4(p0.position),
transform.MultiplyPoint3x4(p1.position),
transform.MultiplyPoint3x4(p0.GetObjectSpaceTangent(PathTangentType.Out)),
transform.MultiplyPoint3x4(p1.GetObjectSpaceTangent(PathTangentType.In)), bezierColor, null, 5.0f);
}
}