private void CheckInteract()
{
//Don't check for handle interactions if it is hidden or if the cursor is over the UI
if (hidden || EventSystem.current.IsPointerOverGameObject(-1))
{
return;
}
//The axis or axes along which the tool handle is being dragged
Axis plane;
//Check if the tool handle was clicked
draggingHandle = CheckHandleActivated(currentMousePosition, out plane);
//If the tool handle wasn't clicked, don't start the interaction
if (!draggingHandle)
{
return;
}
//Save the current transform of the tool handle
handleOrigin.SetTRS(parentTransform);
//Reset the axes being dragged
drag.worldAxis = Vector3.zero;
drag.localAxis = Vector3.zero;
draggingAxes = 0;
//Set the relevant variables based on the drag plane
SetDragData(plane);
//Save the handle position and its distance to the camera
if (Tool == Tool.Translate)
{
originalPosition = parentTransform.position;
cameraDist = (mainCamera.transform.position - parentTransform.position).magnitude;
}
//Save the current rotation, reset the total displacement and save the angle of the cursor click
if (Tool == Tool.Rotate)
{
originalRotation = parentTransform.rotation;
axisAngle = 0f;
clickTangent = GetClickTangent();
}
//Reset the handle size and prime it for scaling
else
{
prevScale = Vector3.one;
scale = Vector3.one;
currCursorDist = GetMouseHandleDist(currentMousePosition);
}
//Capture the cursor while dragging
EditorManager.Instance.CaptureCursor();
//Notify all listeners that the tool handle was activated
OnHandleBegin?.Invoke();
}
void OnMouseDown()
{
scale = Vector3.one;
drag.offset = Vector3.zero;
axisAngle = 0f;
DraggingHandle = CheckHandleActivated(Input.mousePosition, out Axis plane);
mouseOrigin = Input.mousePosition;
handleOrigin.SetTRS(Trs);
drag.axis = Vector3.zero;
draggingAxes = 0;
if (DraggingHandle)
{
Ray ray = Cam.ScreenPointToRay(Input.mousePosition);
if ((plane & Axis.X) == Axis.X)
{
draggingAxes++;
drag.axis = Trs.right;
drag.plane.SetNormalAndPosition(Trs.right.normalized, Trs.position);
}
if ((plane & Axis.Y) == Axis.Y)
{
draggingAxes++;
if (draggingAxes > 1)
{
drag.plane.SetNormalAndPosition(Vector3.Cross(drag.axis, Trs.up).normalized, Trs.position);
}
else
{
drag.plane.SetNormalAndPosition(Trs.up.normalized, Trs.position);
}
drag.axis += Trs.up;
}
if ((plane & Axis.Z) == Axis.Z)
{
draggingAxes++;
if (draggingAxes > 1)
{
drag.plane.SetNormalAndPosition(Vector3.Cross(drag.axis, Trs.forward).normalized, Trs.position);
}
else
{
drag.plane.SetNormalAndPosition(Trs.forward.normalized, Trs.position);
}
drag.axis += Trs.forward;
}
if (draggingAxes < 2)
{
if (pb_HandleUtility.PointOnLine(new Ray(Trs.position, drag.axis), ray, out Vector3 a, out Vector3 b))
{
drag.offset = a - Trs.position;
}
if (drag.plane.Raycast(ray, out float hit))
{
drag.mouse = (ray.GetPoint(hit) - Trs.position).normalized;
drag.cross = Vector3.Cross(drag.axis, drag.mouse);
}
}
else
{
if (drag.plane.Raycast(ray, out float hit))
{
drag.offset = ray.GetPoint(hit) - Trs.position;
drag.mouse = (ray.GetPoint(hit) - Trs.position).normalized;
drag.cross = Vector3.Cross(drag.axis, drag.mouse);
}
}
OnHandleBegin?.Invoke(GetTransform());
}
}
