diff options
Diffstat (limited to 'engine/src/projection.rs')
| -rw-r--r-- | engine/src/projection.rs | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/engine/src/projection.rs b/engine/src/projection.rs index ecbe297..faa741f 100644 --- a/engine/src/projection.rs +++ b/engine/src/projection.rs @@ -22,15 +22,22 @@ pub struct Perspective impl Perspective { - pub fn to_matrix(&self, aspect: f32) -> Matrix<f32, 4, 4> + /// Creates a perspective projection matrix using right-handed coordinates. + #[inline] + pub fn to_matrix_rh(&self, aspect: f32, clip_volume: ClipVolume) + -> Matrix<f32, 4, 4> { let mut out = Matrix::new(); - out.set_cell(0, 0, (1.0 / (self.fov_radians / 2.0).tan()) / aspect); - out.set_cell(1, 1, 1.0 / (self.fov_radians / 2.0).tan()); - out.set_cell(2, 2, (self.near + self.far) / (self.near - self.far)); - out.set_cell(2, 3, (2.0 * self.near * self.far) / (self.near - self.far)); - out.set_cell(3, 2, -1.0); + match clip_volume { + ClipVolume::NegOneToOne => { + out.set_cell(0, 0, (1.0 / (self.fov_radians / 2.0).tan()) / aspect); + out.set_cell(1, 1, 1.0 / (self.fov_radians / 2.0).tan()); + out.set_cell(2, 2, (self.near + self.far) / (self.near - self.far)); + out.set_cell(2, 3, (2.0 * self.near * self.far) / (self.near - self.far)); + out.set_cell(3, 2, -1.0); + } + } out } |