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Polygon division

Here are some things to watch out for. The filled surface (polygon) in the figure has a square shape, but since it has six vertices on the line (edge) that surrounds the surface, it is judged as a hexagon (Figure 2-34).

Figure 2-34 Polygon with 6 vertices

Sega Saturn only supports polygons up to quadrangles, so such polygons need to be divided into two or more quadrilateral polygons.
Add edges and divide the polygon as shown (Figure 2-35).

Figure 2-35 Polygon division

Next, change the 4 points in the figure to TAG (Figure 2-36). If there is another point that is already TAG, please cancel it.

Figure 2-36 TAG selection

Check that the operation mode is “TAG” and
[Duplicate] → [Immediate] To duplicate the face surrounded by TAG.
Then, move the duplicated surface with [TransY] in the down (-Y) direction (Figure 2-37).

Figure 2-37 Duplicating and moving the surface

Next, make this duplicated plane parallel to the top or bottom of the TV monitor screen (parallel to the ZX plane).

For the four selected TAGs,
[Edit] → [Coordinate]
Then, set the Y position value to -0.3.
Make sure that “Local Coordinate” is selected in the dialog.
The result looks like the figure (Figure 2-38).

Figure 2-38 TAG Y position adjustment

Furthermore, with TAG at the previous 4 points,

to duplicate the face surrounded by TAG, and move the duplicated face to the down (-Y) direction with [TransY] (Figure 2-39).

Figure 2-39 Duplicating and moving the surface

Next, transform the newly created part to make a pedestal part.
Select TAG as shown (Figure 2-40).

Figure 2-40 TAG selection

[Duplicate] → [Immediate]

[ScaleX, Y, Z] (select all) + left and right mouse buttons
Then, drag to enlarge the selected part in the ZX direction. The result is shown in the figure (Figures 2-41 and 2-42).

Figure 2-41 Enlargement of pedestal part (wire frame)

Figure 2-42 Expanding the pedestal (shading)

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