Reshaping Roof Objects

A roof object can be reshaped in a 2D or 3D view with the 3D Reshape tool. The roof edge, roof ridge, and roof slope can be changed.

In Top/Plan view, the 2D Reshape tool can be used for basic roof shape editing. However, only the 3D Reshape tool, in any view, can edit the roof edge and roof ridge location.

Five modes are available when both the 3D Reshape tool and a roof object is selected.

 

Mode	Description
3D Reshape	Adjusts the position of a selected roof vertex, constrained horizontally or vertically in combination with the Z-Constrain and Working Plane Constrain modes
Add Vertex	Adds a peak (vertex) to a roof
Remove Vertex	Deletes a roof peak (vertex)
Working Plane Constrain	In 3D Reshape mode, reshapes the roof object horizontally, constrained along the X and/or Y axes
Z-Constrain	In 3D Reshape mode, reshapes the roof object along the Z axis to change the height of a roof ridge or eave

Reshaping the Roof Along the X and Y Axis

 

To reshape the roof horizontally:

1.	Select the roof object.

2.	Click the 3D Reshape tool from the 3D Modeling tool set, and select Working Plane Constrain mode.

3.	Position the cursor over a roof handle.

When the cursor is over a handle, the standard arrow cursor changes into an unfilled, four-way arrow.

4.	Click-drag the handle to change the roof handle location, or enter specific X and Y distance values in the Data bar.

The roof edge, ridge, or eave handle location can be changed. The handle movement is constrained along the X or Y axis (the ground plane); the height of the roof element cannot be changed in this mode.

Change the slope of a roof face by moving the ridge handle. If the reshape results in a roof slope that approaches or exceeds 90 degrees, you are prompted to create a gable wall if desired.

5.	Click when the handle is at the desired location.

Reshaping the Roof Along the Z Axis

 

To change the height of a roof ridge or eave:

1.	Select the roof object.

2.	Click the 3D Reshape tool from the 3D Modeling tool set, and select Z-Constrain mode.

3.	Position the cursor over a roof ridge or eave handle.

When the cursor is over a handle, the standard arrow cursor changes into two-way hollow arrow.

4.	Click-drag the handle to change the roof handle location, or enter the specific Z axis distance in the Data bar.

The roof ridge or eave handle location can be changed. The handle movement is constrained along the Z axis (vertically); only the height of the roof element can be changed in this mode.

5.	Click when the handle is at the desired location.

Adding a Roof Vertex

 

To add a vertex to a roof:

1.	Select the roof for adding the vertex.

2.	Click the 3D Reshape tool from the 3D Modeling tool set, and select Add Vertex mode.

3.	Position the cursor over one of the edge or eave handles.

The standard arrow cursor changes into a single-headed, filled arrow with shaded boxes on either side of the shaft.

4.	Click-drag the mouse to add a vertex to the roof edge or eave.

5.	Click when the vertex is at the desired location.

The roof is automatically reshaped to accommodate the new vertex.

Deleting a Roof Vertex

 

To delete a vertex from a roof:

1.	Select the roof with the vertex to be deleted.

2.	Click the 3D Reshape tool from the 3D Modeling tool set, and select Remove Vertex mode.

3.	Position the cursor over the eave vertex to delete.

The standard arrow cursor changes into a single-headed, filled arrow with a hollow diamond in the shaft.

4.	Click the vertex.

The vertex is removed and the roof is reshaped to the remaining vertices.