private void ResetHandleSettings()
{
if (selectedIndex == -1)
{
return;
}
if (Tools.pivotRotation == PivotRotation.Global)
{
handleRotation = Quaternion.identity;
return;
}
Vector3 pos = linePath.GetPoint(selectedIndex);
Vector3 normal = linePath.GetNormal(selectedIndex);
if (currentTool == Tool.Rotate)
{
Quaternion offsetRot = Quaternion.FromToRotation(handleRotation * Vector3.up, normal);
handleRotation = offsetRot * handleRotation;
}
else
{
if (selectedIndex == 0)
{
Vector3 guidePos = linePath.GetPoint(selectedIndex + 1);
Vector3 toGuide = guidePos - pos;
if (toGuide == Vector3.zero)
{
toGuide = Vector3.forward;
}
handleRotation = Quaternion.LookRotation(toGuide, normal);
}
else
{
Vector3 guidePos = linePath.GetPoint(selectedIndex - 1);
Vector3 toGuide = guidePos - pos;
if (toGuide == Vector3.zero)
{
toGuide = Vector3.forward;
}
handleRotation = Quaternion.LookRotation(toGuide, normal);
}
}
}
protected virtual void OnSceneGUI()
{
linePath = target as LinePath;
handleTransform = linePath.transform;
if (currentTool != Tools.current ||
currentPivotRotation != Tools.pivotRotation)
{
currentTool = Tools.current;
currentPivotRotation = Tools.pivotRotation;
ResetHandleSettings();
}
for (int i = 0; i < linePath.PointCount; i++)
{
ShowPoint(i);
}
for (int i = 1; i < linePath.PointCount; i++)
{
Handles.color = Color.white;
Handles.DrawLine(
linePath.transform.TransformPoint(linePath.Points[i]),
linePath.transform.TransformPoint(linePath.Points[i - 1]));
}
if (linePath.Loop)
{
Handles.DrawLine(
linePath.transform.TransformPoint(linePath.Points[0]),
linePath.transform.TransformPoint(linePath.Points[linePath.Points.Length - 1]));
}
Handles.color = Color.green.SetA(0.3f);
Handles.SphereHandleCap(0, linePath.GetPoint(0f), Quaternion.identity, 0.1f, EventType.Repaint);
Handles.color = Color.red.SetA(0.3f);
Handles.SphereHandleCap(0, linePath.GetPoint(1f), Quaternion.identity, 0.1f, EventType.Repaint);
if (linePath.NormalType == NormalType.Perpendicular)
{
for (int i = 0; i < linePath.Normals.Length; i++)
{
Vector3 pos = linePath.GetPoint(i);
Vector3 normal = linePath.GetNormal(i);
Handles.color = Color.red;
Handles.DrawLine(pos, pos + normal * 0.8f);
}
}
int numIterations = 10 * linePath.PointCount;
for (int i = 1; i < numIterations; i++)
{
float alpha = i / (float)numIterations;
Vector3 pos = linePath.GetPoint(alpha);
Vector3 normal = linePath.GetNormal(alpha);
Handles.color = Color.green;
Handles.DrawLine(pos, pos + normal * 0.4f);
}
}