public override void MoveHandleTo(PointF point, int handleNumber)
{
RemoveAnimation();
base.MoveHandleTo(point, handleNumber);
OnHandleMove?.Invoke(handleNumber);
AddAnimation();
}
public void HandleMove(InputAction.CallbackContext context)
{
OnHandleMove?.Invoke(context);
}
private void InteractHandle()
{
//Set the starting point of the drag to the position of the handle
drag.origin = parentTransform.position;
//Reset the persistent variables of each tool
prevPosition = parentTransform.position;
rotationDisplacement = 0f;
prevScale = scale;
prevCursorDist = currCursorDist;
//Only rotate the handle if the mouse was moved
if (mouseDisplacement.magnitude > 0f)
{
switch (Tool)
{
case Tool.Translate:
//If the plane translate is selected, use the whole hit point as the position of the handle
if (draggingAxes > 1)
{
//Get the position under the cursor but on the movement plane
Vector3 planeHit = GetMovementPlaneHit();
//If the position is not valid, don't move the tool handle
for (int axis = 0; axis < 3; axis++)
{
if (float.IsNaN(planeHit[axis]))
{
return;
}
}
//If the point is valid, move the tool handle to the point under the cursor
parentTransform.position = planeHit - drag.offset;
}
//If only one axis is selected, use the component of the mouse displacement parallel to the drag axis
else
{
//Get the displacement of the mouse in the handle's local space along the drag axis
Vector3 translationVector = GetDragDisplacement(mouseDisplacement);
//Scale the translation vector by the translation speed and distance to camera
translationVector *= cameraDist / 1000 * translationSpeed.GetSpeed();
//Translate the tool handle
parentTransform.Translate(translationVector, Space.Self);
//If any of the axes of the object went out of bounds, set it back to the maximum valid value
for (int axis = 0; axis < 3; axis++)
{
if (Mathf.Abs(parentTransform.position[axis]) > maxDistance)
{
//Get the sign of the current position
float positionSign = Mathf.Sign(parentTransform.position[axis]);
//Set the position to back in bounds
Vector3 fixedPosition = parentTransform.position;
fixedPosition[axis] = maxDistance * positionSign;
parentTransform.position = fixedPosition;
}
}
}
break;
case Tool.Rotate:
//Project the mouse displacement onto the tangent vector to get the component tangent to the rotation handle
Vector2 tangentDisplacement = ProjectBontoA(mouseDisplacement, clickTangent);
//Use the dot product between the tangent displacement and click tangent to get the sign of the rotation
sign = Vector2.Dot(tangentDisplacement, clickTangent) > 0 ? 1f : -1f;
//Use the magnitude of the displacement as the angle displacement
float angleDisplacement = tangentDisplacement.magnitude * sign;
//Add the displacement to the angle after scaling it by the rotation speed
rotationDisplacement = angleDisplacement / 10 * rotationSpeed.GetSpeed();
axisAngle += rotationDisplacement;
//Rotate the tool handle
parentTransform.rotation = Quaternion.AngleAxis(axisAngle, drag.worldAxis) * handleOrigin.Rotation;
break;
//If the tool isn't translate or rotate, it is scale
default:
//Stores the scale factor of each axis
Vector3 scaleVector;
//If all axes are being dragged, scale based on the distance between the cursor and tool handle
if (draggingAxes > 1)
{
//Get the distance in screen space between the tool handle and the cursor
currCursorDist = GetMouseHandleDist(currentMousePosition + mouseOffest);
//Calculate the displacement of the distance since last frame
float displacement = currCursorDist - prevCursorDist;
//Multiply the drag axis by the displacement
scaleVector = new Vector3(displacement, displacement, displacement);
}
//If only one axis is being dragged, only use the mouse displacement parallel to the axis being dragged
else
{
scaleVector = GetDragDisplacement(mouseDisplacement);
}
//Scale the vector by the translation speed and distance to camera
scaleVector *= scaleSpeed.GetSpeed() / 100;
//Scale the axis of the scale vector by the scale displacement
for (int axis = 0; axis < 3; axis++)
{
if (scaleVector[axis] != 0)
{
scale[axis] += scaleVector[axis];
}
}
break;
}
}
//Notify all listeners that the handle was moved
OnHandleMove?.Invoke();
}
void Update()
{
if (IsHidden)
{
return;
}
if (Input.GetMouseButtonDown(0) && !Input.GetKey(KeyCode.LeftAlt))
{
OnMouseDown();
}
if (DraggingHandle)
{
if (Input.GetKey(KeyCode.LeftAlt))
{
OnFinishHandleMovement();
}
#if DEBUG
Vector3 dir = drag.axis * 2f;
Color col = new Color(Mathf.Abs(drag.axis.x), Mathf.Abs(drag.axis.y), Mathf.Abs(drag.axis.z), 1f);
float lineTime = 0f;
Debug.DrawRay(drag.origin, dir * 1f, col, lineTime, false);
Debug.DrawLine(drag.origin + dir, (drag.origin + dir * .9f) + (Trs.up * .1f), col, lineTime, false);
Debug.DrawLine(drag.origin + dir, (drag.origin + dir * .9f) + (Trs.forward * .1f), col, lineTime, false);
Debug.DrawLine(drag.origin + dir, (drag.origin + dir * .9f) + (Trs.right * .1f), col, lineTime, false);
Debug.DrawLine(drag.origin + dir, (drag.origin + dir * .9f) + (-Trs.up * .1f), col, lineTime, false);
Debug.DrawLine(drag.origin + dir, (drag.origin + dir * .9f) + (-Trs.forward * .1f), col, lineTime, false);
Debug.DrawLine(drag.origin + dir, (drag.origin + dir * .9f) + (-Trs.right * .1f), col, lineTime, false);
Debug.DrawLine(drag.origin, drag.origin + drag.mouse, Color.red, lineTime, false);
Debug.DrawLine(drag.origin, drag.origin + drag.cross, Color.black, lineTime, false);
#endif
}
if (Input.GetMouseButton(0) && DraggingHandle)
{
Vector3 a = Vector3.zero;
bool valid = false;
if (draggingAxes < 2 && tool != Tool.Rotate)
{
valid = pb_HandleUtility.PointOnLine(new Ray(Trs.position, drag.axis), Cam.ScreenPointToRay(Input.mousePosition), out a, out Vector3 b);
}
else
{
Ray ray = Cam.ScreenPointToRay(Input.mousePosition);
if (drag.plane.Raycast(ray, out float hit))
{
a = ray.GetPoint(hit);
valid = true;
}
}
if (valid)
{
drag.origin = Trs.position;
switch (tool)
{
case Tool.Position:
{
Trs.position = pb_Snap.Snap(a - drag.offset, positionSnapValue);
}
break;
case Tool.Rotate:
{
Vector2 delta = (Vector2)Input.mousePosition - mouseOrigin;
mouseOrigin = Input.mousePosition;
float sign = pb_HandleUtility.CalcMouseDeltaSignWithAxes(Cam, drag.origin, drag.axis, drag.cross, delta);
axisAngle += delta.magnitude * sign;
Trs.localRotation = Quaternion.AngleAxis(pb_Snap.Snap(axisAngle, rotationSnapValue), drag.axis) * handleOrigin.Rotation; // trs.localRotation;
}
break;
case Tool.Scale:
{
Vector3 v;
if (draggingAxes > 1)
{
v = SetUniformMagnitude(((a - drag.offset) - Trs.position));
}
else
{
v = Quaternion.Inverse(handleOrigin.Rotation) * ((a - drag.offset) - Trs.position);
}
v += Vector3.one;
scale = pb_Snap.Snap(v, scaleSnapValue);
RebuildGizmoMesh(scale);
}
break;
}
OnHandleMove?.Invoke(GetTransform());
RebuildGizmoMatrix();
}
}
if (Input.GetMouseButtonUp(0))
{
OnFinishHandleMovement();
}
}