Enum softrender::render::geometry::FaceWinding

pub enum FaceWinding {
    Clockwise,
    CounterClockwise,
}

Defines face winding variations. These apply to screen-space vertices, so imagine the vertices as they are viewed from the final image.

If all triangles of a mesh have the same face winding, then triangles that are facing away from the screen can be skipped since they will have the opposite winding order, since they are viewed from the back. This is known as backface culling.

Variants

Clockwise

Clockwise face winding, where the vertices are like so:

                  1
                 /|
          A    /  |
        /    /    |
      /    /      | |
    /    /        | |
       /          | |
     /            | V
   /              |
3 *---------------* 2
      <-------

CounterClockwise

Counter-Clockwise face winding, where the vertices are like so:

                  1
                 /|
          /    /  |
        /    /    |
      /    /      | A
    V    /        | |
       /          | |
     /            | |
   /              |
3 *---------------* 2
      ------->

Trait Implementations

impl Debug for FaceWinding

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for FaceWinding

fn clone(&self) -> FaceWinding

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for FaceWinding

impl PartialEq for FaceWinding

fn eq(&self, __arg_0: &FaceWinding) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Eq for FaceWinding