void ShowDirections()
{
Handles.color = Color.green;
Vector3 point = spline.GetPoint(0f);
Handles.DrawLine(point, point + spline.GetDirection(0f) * directionScale);
int steps = stepsPerCurve * spline.CurveCount;
for (int i = 1; i <= steps; i++)
{
point = spline.GetPoint(i / (float)steps);
Handles.DrawLine(point, point + spline.GetDirection(i / (float)steps) * directionScale);
}
}
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);
}
}