private void OnDrawGizmos()
{
Gizmos.color = _renderColor;
Gizmos.matrix = transform.localToWorldMatrix;
int segmentCount = SegmentCount;
if (_data.Count > 1 && segmentCount > 0)
{
for (int segmentIndex = 0; segmentIndex < segmentCount; ++segmentIndex)
{
ItemData segment = _data[segmentIndex];
if (segment.EnsureRenderPointsValidity())
{
segment.UpdateRenderPoints();
}
Vector3[] renderPoints = segment.RenderPoints;
Vector3 prev = renderPoints[0];
Vector3 curr;
for (int renderPointIndex = 1, len = renderPoints.Length; renderPointIndex < len; ++renderPointIndex)
{
curr = renderPoints[renderPointIndex];
Gizmos.DrawLine(curr, prev);
prev = curr;
}
}
}
for (int vertexIndex = 0; vertexIndex < _data.Count; ++vertexIndex)
{
Vector3 position = _data[vertexIndex].Position;
Gizmos.DrawCube(position, RenderPointSize * HandleUtility.GetHandleSize(position));
}
Gizmos.matrix = Matrix4x4.identity;
}
private void UpdateSegment(int index)
{
int segmentCount = SegmentCount;
int lastSegment = segmentCount - 1;
int vertexCount = _data.Count;
Vector3 p1 = _data[index].Position;
Vector3 p0, p2, p3;
if (_type == SplineTypes.Open)
{
p2 = _data[index + 1].Position;
p0 = index == 0 ? p1 : _data[index - 1].Position;
p3 = index == lastSegment ? p2 : _data[index + 2].Position;
//p0 = index == 0 ? (2f * p1 - p2) : _data[index - 1].Position;
//p3 = index == lastSegment ? (2f * p2 - p1) : _data[index + 2].Position;
}
else
{
p0 = index == 0 ? _data[lastSegment].Position : _data[index - 1].Position;
p2 = _data[(index + 1) % vertexCount].Position;
p3 = _data[(index + 2) % vertexCount].Position;
}
ItemData segment = _data[index];
segment.A = p1;
segment.B = 0.5f * (-p0 + p2);
segment.C = p0 - 2.5f * p1 + 2f * p2 - 0.5f * p3;
segment.D = 0.5f * (-p0 + 3f * p1 - 3f * p2 + p3);
#if UNITY_EDITOR
segment.EnsureRenderPointsValidity();
segment.UpdateRenderPoints();
#endif
}