How to reverse the direction of the normals on
mesh components, or on the whole mesh.
Some tools such as Mesh > Mesh Offset,
require that all components of a mesh have their normals pointing
in the same direction.
To show mismatched normal
directions
- Click the Multi Color icon.
- Click the small arrowhead to open the
options section.
- Turn on the new Show
Orientation option.
If
mesh components facing in the same direction (either toward or away
from the camera) are shaded in both blue and yellow, your model exhibits
mismatched normal directions.
To reverse the direction
of normals on a component
- Choose Mesh > Reverse Mesh Orientation
.
All
meshes are shaded in blue and/or yellow. Blue indicates components
that have a normal pointing toward the camera, and yellow, away
from the camera.
- Select the component that you wish to
reverse.
- Press the Reverse Component button.
The direction of the
normals is reversed on the component. The shading color changes.
- Press Reverse
Component again to undo the operation, or select another
component to reverse normals on.
To reverse the normal direction on the whole
mesh, press the Reverse Mesh button.
NoteWhen
reversing a component, we reverse the winding (that is the order)
of the vertices to cause the normal to change direction. When reversing
the whole mesh, we simply change the value of a flag (boolean value)
and no reverse winding is done.
