# Roof Design - Move Point

The "Move point" function allows an existing point of the layout polygon to be freely moved within the plane of the roof surface. The point can optionally be moved so that one of the two adjacent lines retains its direction, or so that both lines change direction.

Tiles are not taken into account with this function, as this is generally not meaningful.

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The point is moved along the ridge line. The direction of the ridge line is fixed in this case.

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The point is moved along the eaves. The direction of the eaves is fixed in this case. As a result, the roof surfaces below and to the right overlap in the hatched area.

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Free displacement in X and Y directions.

For this function, first select the point to be moved. The program then highlights the first of the two lines terminating at that point. With left mouse click you can choose this line as the direction line. The point will then be moved parallel to this line. With right mouse click this line is rejected and the other adjacent roof line is offered. If you also reject that with right mouse click, you can move the point freely.

Next you can graphically move the selected point and place it at the desired location. All snapping and input functions are available during this process.

After placing the point, a dialog box opens where you can correct the point's position again. When any number is changed, the other numbers will adjust automatically if necessary.

**Shift within the roof surface:** This value shows the distance from the old position to the new position of the point, measured along the slope of the surface.

**Displacement in Y direction:** This displays the displacement on the plan in the Y direction of the small red coordinate system.

**Vertical displacement:** This value indicates the height difference between the old and the new position of the moved point.

**Elevation of the point:** This field displays the absolute elevation of the moved point, measured from global 0.

**Displacement in X direction:** This displays the displacement on the plan in the X direction of the small red coordinate system.
