Face

Draw a 3D face entity, which is used to build up objects.

This function allows you to draw a 3D face by indicating the four points that form the corners of the face. A face cannot be given a thickness.

• Faces that face towards the user should be drawn anti-clockwise.

• Faces that face away from the user should be drawn clockwise.

This is because the renderer uses the "anti-clockwise facing outwards" rule when determining if the face is facing towards the camera/eye.

If the current render mode is Flat Shading or above, the face will be drawn as filled.

Procedure

1. You are prompted to:

Indicate first point of the 3D Face

2. Click in the drawing to indicate the first point of the face. You are prompted to:

Indicate next point of the 3D face

3. A line rubberbands when the mouse is moved.

4. Move the cursor to the position of the second point and click to indicate the point.

5. You are prompted to:

Indicate next point of the 3D face

6. The first line of the face is drawn and two lines rubber band to form a triangle.

7. Move the cursor to the position of the third point and click to indicate the point.

8. You are prompted to:

Indicate next point of the 3D face

9.  The first two lines of the face are drawn and two lines rubberband to form the face.

10. Move the cursor to the position of the final point and click to indicate the point. The face is added to the drawing and the function repeats.

11. Right-click the screen and select Quit to end the function. Alternatively, press [Esc].

12. The Face can now be seen in a rendered view.