[Figure 2] The left bookcase has correct outward pointing normals, but the bookcase on the right has inward pointing normals.	[Figure 3] The bitmap on this object is mapped upside down.

Controlling Normals
If the model being imported appears inside out, or if some of its normals appear to be colored dark, it could be that the polygon's normals are pointing inward, as shown for the bookcase on the right in Figure 2. A normal is an invisible vector that points outward from the center of the surface polygon and is used to tell the rendering engine which way a polygon is pointing.

If the normal is flipped (which can happen occasionally when exporting and importing models), the back side of a polygon becomes visible and its front side becomes invisible, thus making the object appear inside out. Using Polygon Normals.

Consistent causes all normals to point inward or outward based on the direction of the majority of the normals. If the majority of the normals are pointing incorrectly inward, you can use the Flip Normals option to change their direction.

Flipping UV Textures
When a texture is mapped onto the surface of an object, its position on the surface is defined by a coordinate system with U for the horizontal position of the upper-left corner and V as the vertical position of the upper-left corner. If the imported bitmaps on an object come in upside down or flipped left to right, you can use the Flip U and V Texture Coordinates to correct the problem. Figure 3 shows an image with a mapped image that is imported with the texture upside down.

Import a 3D Object

1. Open Poser with the default man visible. Select the Figure, Hide Figure menu to hide the current figure.

2. Click File, Import, Wavefront OBJ menu.

The Import Options dialog box appears where you can specify the import settings.