private void HandleSegmentModifications()
{
Handles.zTest = UnityEngine.Rendering.CompareFunction.Less;
List <GSplineSegment> segments = instance.Spline.Segments;
List <GSplineAnchor> anchors = instance.Spline.Anchors;
for (int i = 0; i < segments.Count; ++i)
{
if (!instance.Spline.IsSegmentValid(i))
{
continue;
}
if (i == selectedSegmentIndex)
{
HandleSelectedSegmentModifications();
}
int i0 = segments[i].StartIndex;
int i1 = segments[i].EndIndex;
GSplineAnchor a0 = anchors[i0];
GSplineAnchor a1 = anchors[i1];
Vector3 startPosition = a0.Position;
Vector3 endPosition = a1.Position;
Vector3 startTangent = startPosition + segments[i].StartTangent;
Vector3 endTangent = endPosition + segments[i].EndTangent;
Color color = i == selectedSegmentIndex ?
GGriffinSettings.Instance.SplineToolSettings.SelectedElementColor :
GGriffinSettings.Instance.SplineToolSettings.SegmentColor;
Handles.color = color;
Vector3[] bezierPoints = Handles.MakeBezierPoints(startPosition, endPosition, startTangent, endTangent, instance.Smoothness);
Handles.DrawAAPolyLine(BEZIER_WIDTH, bezierPoints);
if (GGuiEventUtilities.IsLeftMouseUp)
{
float d0 = GHandleUtility.DistanceMouseToSpline(Event.current.mousePosition, bezierPoints);
float d1 = GHandleUtility.DistanceMouseToPoint(Event.current.mousePosition, bezierPoints[0] - instance.PositionOffset);
float d2 = GHandleUtility.DistanceMouseToPoint(Event.current.mousePosition, bezierPoints[bezierPoints.Length - 1] - instance.PositionOffset);
if (d0 <= BEZIER_SELECT_DISTANCE &&
d1 > BEZIER_SELECT_DISTANCE &&
d2 > BEZIER_SELECT_DISTANCE)
{
selectedSegmentIndex = i;
if (GGuiEventUtilities.IsCtrl)
{
instance.Spline.Segments.RemoveAt(selectedSegmentIndex);
selectedSegmentIndex = -1;
GUI.changed = true;
}
//don't Use() the event here
}
}
}
Handles.zTest = UnityEngine.Rendering.CompareFunction.Always;
}
private void HandleAnchorModifications()
{
List <GSplineAnchor> anchors = instance.Spline.Anchors;
for (int i = 0; i < anchors.Count; ++i)
{
Handles.zTest = UnityEngine.Rendering.CompareFunction.Less;
Handles.color = i == selectedAnchorIndex ?
GGriffinSettings.Instance.SplineToolSettings.SelectedElementColor :
GGriffinSettings.Instance.SplineToolSettings.AnchorColor;
GSplineAnchor a = anchors[i];
if (a == null)
{
continue;
}
Vector3 groundPosition = new Vector3(a.Position.x, 0, a.Position.z);
Handles.DrawDottedLine(
groundPosition,
a.Position, 5);
if (GGuiEventUtilities.IsLeftMouseUp && GGuiEventUtilities.IsCtrl)
{
float d0 = GHandleUtility.DistanceMouseToLine(Event.current.mousePosition, groundPosition, a.Position);
float d1 = GHandleUtility.DistanceMouseToPoint(Event.current.mousePosition, groundPosition);
float d2 = GHandleUtility.DistanceMouseToPoint(Event.current.mousePosition, a.Position);
if (d0 <= BEZIER_SELECT_DISTANCE &&
d1 > BEZIER_SELECT_DISTANCE &&
d2 > BEZIER_SELECT_DISTANCE)
{
SnapAnchorToSurface(a);
GUI.changed = true;
}
}
float handleSize = HandleUtility.GetHandleSize(a.Position) * 0.2f;
if (Handles.Button(a.Position, Camera.current.transform.rotation, handleSize, handleSize * 0.5f, Handles.SphereHandleCap))
{
if (GGuiEventUtilities.IsShift)
{
if (selectedAnchorIndex >= 0 && selectedAnchorIndex < anchors.Count)
{
instance.Spline.AddSegment(selectedAnchorIndex, i);
GUI.changed = true;
}
selectedAnchorIndex = i;
selectedSegmentIndex = -1;
Event.current.Use();
}
else if (GGuiEventUtilities.IsCtrl)
{
instance.Spline.RemoveAnchor(i);
selectedAnchorIndex = -1;
selectedSegmentIndex = -1;
GUI.changed = true;
Event.current.Use();
}
else
{
selectedAnchorIndex = i;
selectedSegmentIndex = -1;
Event.current.Use();
}
}
if (i == selectedAnchorIndex)
{
Handles.zTest = UnityEngine.Rendering.CompareFunction.Always;
if (Tools.current == Tool.Move)
{
a.Position = Handles.PositionHandle(a.Position, a.Rotation);
}
else if (Tools.current == Tool.Rotate)
{
a.Rotation = Handles.RotationHandle(a.Rotation, a.Position);
}
else if (Tools.current == Tool.Scale)
{
a.Scale = Handles.ScaleHandle(a.Scale, a.Position, a.Rotation, HandleUtility.GetHandleSize(a.Position));
}
instance.transform.position = instance.Spline.Anchors[i].Position;
}
}
Handles.zTest = UnityEngine.Rendering.CompareFunction.Always;
}