private void ResetHandleSettings()
{
if (selectedIndex == -1)
{
return;
}
handleScale = Vector3.one;
Vector3 point = spline.GetControlPoint(selectedIndex);
if (selectedIndex % 3 == 0)
{
Vector3 normal = spline.GetControlNormal(selectedIndex);
Vector3 guidePos = Vector3.zero;
if (selectedIndex == 0)
{
guidePos = spline.GetControlPoint(selectedIndex + 1);
}
else
{
guidePos = spline.GetControlPoint(selectedIndex - 1);
}
Vector3 toGuide = (guidePos - point).normalized;
Vector3 right = Vector3.Cross(normal, toGuide).normalized;
normal = Vector3.Cross(-right, toGuide).normalized;
spline.Normals[selectedIndex] = spline.transform.InverseTransformDirection(normal);
handleRotation = Quaternion.LookRotation(toGuide, normal);
if (spline.GetControlPointMode(selectedIndex) == BezierControlPointMode.Free)
{
handleRotation = Quaternion.LookRotation(normal);
Quaternion offsetRot = Quaternion.AngleAxis(90f, handleRotation * Vector3.right);
handleRotation = offsetRot * handleRotation;
}
}
else
{
int nodeIndex = 0;
if ((selectedIndex - 1) % 3 == 0) // after node
{
nodeIndex = selectedIndex - 1;
}
else
{
nodeIndex = selectedIndex + 1;
}
Vector3 normal = spline.GetControlNormal(nodeIndex);
Vector3 cp = spline.GetControlPoint(nodeIndex);
handleRotation = Quaternion.LookRotation(point - cp, normal);
}
if (Tools.pivotRotation == PivotRotation.Global)
{
handleRotation = Quaternion.identity;
}
}
protected virtual void OnSceneGUI()
{
spline = target as SplinePath;
handleTransform = spline.transform;
if (currentTool != Tools.current ||
currentPivotRotation != Tools.pivotRotation)
{
currentTool = Tools.current;
currentPivotRotation = Tools.pivotRotation;
ResetHandleSettings();
}
Vector3 p0 = ShowPoint(0);
for (int i = 1; i < spline.ControlPointCount; i += 3)
{
Vector3 p1 = ShowPoint(i);
Vector3 p2 = ShowPoint(i + 1);
Vector3 p3 = ShowPoint(i + 2);
Handles.color = Color.gray;
Handles.DrawLine(p0, p1);
Handles.DrawLine(p2, p3);
Handles.DrawBezier(p0, p3, p1, p2, Color.white, null, 2f);
p0 = p3;
}
Handles.color = Color.green.SetA(0.3f);
Handles.SphereHandleCap(0, spline.GetPoint(0f), Quaternion.identity, 0.1f, EventType.Repaint);
Handles.color = Color.red.SetA(0.3f);
Handles.SphereHandleCap(0, spline.GetPoint(1f), Quaternion.identity, 0.1f, EventType.Repaint);
if (spline.NormalType == NormalType.Perpendicular)
{
for (int i = 0; i < spline.Normals.Length; i++)
{
if (i % 3 == 0)
{
Vector3 pos = spline.GetControlPoint(i);
Vector3 normal = spline.GetControlNormal(i);
Handles.color = Color.red;
Handles.DrawLine(pos, pos + normal * 0.8f);
}
}
}
int numIterations = 10 * spline.ControlPointCount;
for (int i = 1; i < numIterations; i++)
{
float alpha = i / (float)numIterations;
Vector3 pos = spline.GetPoint(alpha);
Vector3 normal = spline.GetNormal(alpha);
Handles.color = Color.green;
Handles.DrawLine(pos, pos + normal * 0.4f);
}
}
