private void UpdateDragHandles()
{
if (_targetOOBB == null)
{
return;
}
float halfHandleScreenSize = _dragHandleSizeInPixels * 0.5f;
Camera camera = EditorCamera.Instance.Camera;
Plane cameraNearPlane = camera.GetNearPlane();
List <BoxFace> allBoxFaces = BoxFaces.GetAll();
foreach (BoxFace face in allBoxFaces)
{
Vector3 boxFaceCenter = _targetOOBB.GetBoxFaceCenter(face);
Vector2 screenFaceCenter = camera.WorldToScreenPoint(boxFaceCenter);
_dragHandles[(int)face].ScreenRect = new Rect(screenFaceCenter.x - halfHandleScreenSize, screenFaceCenter.y - halfHandleScreenSize, _dragHandleSizeInPixels, _dragHandleSizeInPixels);
_dragHandles[(int)face].IsVisible = true;
if (cameraNearPlane.GetDistanceToPoint(boxFaceCenter) < 0.0f)
{
_dragHandles[(int)face].IsVisible = false;
}
}
}
private int GetIndexOfHoveredDragHandle()
{
Vector2 devicePos;
if (!InputDevice.Instance.GetPosition(out devicePos))
{
return(-1);
}
List <BoxFace> allBoxFaces = BoxFaces.GetAll();
foreach (BoxFace face in allBoxFaces)
{
DragHandle dragHandle = _dragHandles[(int)face];
if (!_axesVisibilityMask[(int)dragHandle.Axis])
{
continue;
}
if (dragHandle.ScreenRect.Contains(devicePos, true))
{
return((int)face);
}
}
return(-1);
}
public Plane GetBoxFacePlane(BoxFace boxFace)
{
switch (boxFace)
{
case BoxFace.Back:
return(new Plane(BoxFaces.GetFaceNormal(BoxFace.Back), GetBoxPoint(BoxPoint.BackBottomLeft)));
case BoxFace.Front:
return(new Plane(BoxFaces.GetFaceNormal(BoxFace.Front), GetBoxPoint(BoxPoint.FrontBottomLeft)));
case BoxFace.Left:
return(new Plane(BoxFaces.GetFaceNormal(BoxFace.Left), GetBoxPoint(BoxPoint.FrontBottomLeft)));
case BoxFace.Right:
return(new Plane(BoxFaces.GetFaceNormal(BoxFace.Right), GetBoxPoint(BoxPoint.FrontBottomRight)));
case BoxFace.Top:
return(new Plane(BoxFaces.GetFaceNormal(BoxFace.Top), GetBoxPoint(BoxPoint.FrontTopLeft)));
case BoxFace.Bottom:
return(new Plane(BoxFaces.GetFaceNormal(BoxFace.Bottom), GetBoxPoint(BoxPoint.FrontBottomLeft)));
default:
return(new Plane());
}
}
public List <Vector3> GetBoxFaceCornerPoints(BoxFace boxFace)
{
var points = new Vector3[BoxFaceCornerPoints.Count];
Vector3 boxFaceCenter = GetBoxFaceCenter(boxFace);
Vector2 boxFaceXZSize = GetBoxFaceSizeAlongFaceLocalXZAxes(boxFace, Vector3.one);
Vector2 halfXZSize = boxFaceXZSize * 0.5f;
points[(int)BoxFaceCornerPoint.TopLeft] = boxFaceCenter - BoxFaces.GetFaceRightAxis(boxFace) * halfXZSize.x + BoxFaces.GetFaceLookAxis(boxFace) * halfXZSize.y;
points[(int)BoxFaceCornerPoint.TopRight] = boxFaceCenter + BoxFaces.GetFaceRightAxis(boxFace) * halfXZSize.x + BoxFaces.GetFaceLookAxis(boxFace) * halfXZSize.y;
points[(int)BoxFaceCornerPoint.BottomRight] = boxFaceCenter + BoxFaces.GetFaceRightAxis(boxFace) * halfXZSize.x - BoxFaces.GetFaceLookAxis(boxFace) * halfXZSize.y;
points[(int)BoxFaceCornerPoint.BottomLeft] = boxFaceCenter - BoxFaces.GetFaceRightAxis(boxFace) * halfXZSize.x - BoxFaces.GetFaceLookAxis(boxFace) * halfXZSize.y;
return(new List <Vector3>(points));
}
public Vector3 GetBoxFaceCenter(BoxFace boxFace)
{
Vector3 center = Center;
Vector3 extents = Extents;
switch (boxFace)
{
case BoxFace.Back:
return(center + BoxFaces.GetFaceNormal(BoxFace.Back) * extents.z);
case BoxFace.Front:
return(center + BoxFaces.GetFaceNormal(BoxFace.Front) * extents.z);
case BoxFace.Left:
return(center + BoxFaces.GetFaceNormal(BoxFace.Left) * extents.x);
case BoxFace.Right:
return(center + BoxFaces.GetFaceNormal(BoxFace.Right) * extents.x);
case BoxFace.Top:
return(center + BoxFaces.GetFaceNormal(BoxFace.Top) * extents.y);
case BoxFace.Bottom:
return(center + BoxFaces.GetFaceNormal(BoxFace.Bottom) * extents.y);
default:
return(Vector3.zero);
}
}
protected override void OnInputDeviceFirstButtonDown()
{
base.OnInputDeviceFirstButtonDown();
if (_hoveredDragHandle != -1 && _targetOOBB != null && _targetObject != null)
{
_dragStartData.DragHandleFace = (BoxFace)_hoveredDragHandle;
_dragStartData.TargetOOBB = new OrientedBox(_targetOOBB);
_dragStartData.TargetObjectScale = _targetObject.transform.lossyScale;
_dragStartData.ScaleFromCenter = _enableScaleFromCenterShortcut.IsActive();
_dragStartData.DragHandlePlane = _dragStartData.TargetOOBB.GetBoxFacePlane(_dragStartData.DragHandleFace);
_dragStartData.ScaleAxisIndex = -1;
if (_dragStartData.DragHandleFace == BoxFace.Left || _dragStartData.DragHandleFace == BoxFace.Right)
{
_dragStartData.ScaleAxisIndex = 0;
}
else if (_dragStartData.DragHandleFace == BoxFace.Bottom || _dragStartData.DragHandleFace == BoxFace.Top)
{
_dragStartData.ScaleAxisIndex = 1;
}
else
{
_dragStartData.ScaleAxisIndex = 2;
}
if (_dragStartData.ScaleFromCenter)
{
_dragStartData.ScalePivot = _dragStartData.TargetOOBB.Center;
}
else
{
_dragStartData.ScalePivot = _dragStartData.TargetOOBB.GetBoxFaceCenter(BoxFaces.GetOpposite(_dragStartData.DragHandleFace));
}
_dragStartData.PivotPlane = new Plane(_dragStartData.DragHandlePlane.normal, _dragStartData.ScalePivot);
_dragStartData.DragPlane = CalculateDragPlane();
_dragStartData.FromPivotToObjectPos = _targetObject.transform.position - _dragStartData.ScalePivot;
}
}
public Vector3 GetBoxPoint(BoxPoint boxPoint)
{
Vector3 center = Center;
Vector3 extents = Extents;
switch (boxPoint)
{
case BoxPoint.Center:
return(center);
case BoxPoint.FrontTopLeft:
return(center - BoxFaces.GetFaceRightAxis(BoxFace.Front) * extents.x +
BoxFaces.GetFaceLookAxis(BoxFace.Front) * extents.y +
BoxFaces.GetFaceNormal(BoxFace.Front) * extents.z);
case BoxPoint.FrontTopRight:
return(center + BoxFaces.GetFaceRightAxis(BoxFace.Front) * extents.x +
BoxFaces.GetFaceLookAxis(BoxFace.Front) * extents.y +
BoxFaces.GetFaceNormal(BoxFace.Front) * extents.z);
case BoxPoint.FrontBottomRight:
return(center + BoxFaces.GetFaceRightAxis(BoxFace.Front) * extents.x -
BoxFaces.GetFaceLookAxis(BoxFace.Front) * extents.y +
BoxFaces.GetFaceNormal(BoxFace.Front) * extents.z);
case BoxPoint.FrontBottomLeft:
return(center - BoxFaces.GetFaceRightAxis(BoxFace.Front) * extents.x -
BoxFaces.GetFaceLookAxis(BoxFace.Front) * extents.y +
BoxFaces.GetFaceNormal(BoxFace.Front) * extents.z);
case BoxPoint.BackTopLeft:
return(center - BoxFaces.GetFaceRightAxis(BoxFace.Back) * extents.x +
BoxFaces.GetFaceLookAxis(BoxFace.Back) * extents.y +
BoxFaces.GetFaceNormal(BoxFace.Back) * extents.z);
case BoxPoint.BackTopRight:
return(center + BoxFaces.GetFaceRightAxis(BoxFace.Back) * extents.x +
BoxFaces.GetFaceLookAxis(BoxFace.Back) * extents.y +
BoxFaces.GetFaceNormal(BoxFace.Back) * extents.z);
case BoxPoint.BackBottomRight:
return(center + BoxFaces.GetFaceRightAxis(BoxFace.Back) * extents.x -
BoxFaces.GetFaceLookAxis(BoxFace.Back) * extents.y +
BoxFaces.GetFaceNormal(BoxFace.Back) * extents.z);
case BoxPoint.BackBottomLeft:
return(center - BoxFaces.GetFaceRightAxis(BoxFace.Back) * extents.x -
BoxFaces.GetFaceLookAxis(BoxFace.Back) * extents.y +
BoxFaces.GetFaceNormal(BoxFace.Back) * extents.z);
default:
return(Vector3.zero);
}
}
