Move XY command (Edit-Tools menu)

This command selects or deselects the Move XY editing tool. This tool can be used to move items in the horizontal (XY) directions. It is available in all editing modes (but must be reselected every time the editing mode is changed). When the Move XY tool is selected, an item can be moved by clicking on it and dragging the mouse while keeping the left button pressed.

In Point, Object and Polygon modes the behavior is straightforward. In Extended point and Block modes, smoothing is automatically applied in order to make the editing process easier. Also note that in Polygon mode the neighbouring polygons are modified so that moving the selected polygon does not disconnect it from the rest of the structure.

Remarks :

- In Block mode, two different smoothing methods are available : see Extra-Smoothing command for more information.

- In Object mode, moving an object along the track over a sufficiently long distance automatically moves the object from one track block to another. On the contrary, a vertex or a polygon keeps belonging to the same track block, no matter how far it is moved.

Note about moving track blocks :

When moving track blocks, be very careful not to create a sharp turn in which the track polygons would overlap with each other ; this would cause display problems in NFS3. Once the track structure is disorganized, it is impossible to reobtain a normal structure without moving every single point back in place ; the only reasonable option is therefore to immediately use the Undo command in order to cancel the changes. In order to avoid this situation, it is advisable to increase the width of the smoothing zone, especially when moving a track block over a long distance. Enabling extra-smoothing is also helpful in many cases. Note that the default smoothing parameters at T3ED startup are only appropriate for moving track blocks over relatively short distances.

Notes about moving objects :

- Collisions with extra-objects (displayed in green) are only detected over specific track polygons. In order to allow a moved object to be detected, you must modify the track polygon properties accordingly. First choose the High-resolution view, and switch to Polygon mode. Select the track polygon over which the object lies ; use the Polygon Flags command in the Edit-Tools menu, and check the "Extra-object collision detection" option. If the object lies across several polygons, repeat this operation for every polygon to enable object detection.

- Collisions with polygon objects are not handled by NFS3 ; rather, the track polygons over which the object lies (or beyond) are marked as impassable for the cars. The procedure to change the polygon properties (passable or not, etc...) is the following : first chose the High-resolution view, and switch to Polygon mode. Select the track polygon, and use the Polygon Flags command in the Edit-Tools menu ; choose the relevant option in the "Drive-over behavior" list to change the passable status of a polygon. Also note that collisions with impassable polygons are handled only if all neighboring polygons have the "Wall collision detection" flag set ; normally this flag is automatically set by T3ED when a polygon is made impassable.

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