I'm having a bit of trouble with this code. Here's a rundown: With this code, you drag the mouse anywhere in the scene to drag the camera. If you attempt to drag the camera on the x-axis past 0, the camera stops. All of this works if I use a very slow drag. If I use a fast drag, the camera moves past 0 into negative coordinates. This code is actually in a customized version of FingureGestures DragObject action.
I think I see the problem, but I'm not sure how to fix. If you use a large drag motion, this creates a large value for "move". So, if the camera's X-coordinate is larger than 0, and move is more than 0, the camera can move too far.
I tried using Clamp, but I wasn't sure how to transfer values between my camera and "move" since they seem to be using different coordinate systems. (camera = absolute position, move = distance to destination)
Vector3 currentFingerPos3d = ProjectOnCameraPlane( finger.Position, tf.position );
Vector3 previousFingerPos3d = ProjectOnCameraPlane( finger.PreviousPosition, tf.position );
Vector3 move = currentFingerPos3d - previousFingerPos3d;
// translate dragged object
if (objectIsCamera.Value)
{
// get the camera
var go = Fsm.GetOwnerDefaultTarget(objectToDrag);
// get the position of the camera
var cameraPosition = space == Space.World ? go.transform.position : go.transform.localPosition;
// if camera's x position is equal to or less than the camera's boundry, don't move the camera left
if (cameraPosition.x <= minCameraBoundry.Value.x)
{
// is player trying to move camera left? if yes, don't let them.
if (currentFingerPos3d.x > previousFingerPos3d.x)
{
move.x = 0.0f;
}
}
// the specific amount to move the camera (move 25 px left, move 10 px right)
tf.position -= move;
}
