60 lines
1.7 KiB
Rust
60 lines
1.7 KiB
Rust
use na::{Orthographic3, Perspective3, Point3};
|
|
|
|
#[test]
|
|
fn perspective_inverse() {
|
|
let proj = Perspective3::new(800.0 / 600.0, 3.14 / 2.0, 1.0, 1000.0);
|
|
let inv = proj.inverse();
|
|
|
|
let id = inv * proj.into_inner();
|
|
|
|
assert!(id.is_identity(1.0e-7));
|
|
}
|
|
|
|
#[test]
|
|
fn orthographic_inverse() {
|
|
let proj = Orthographic3::new(1.0, 2.0, -3.0, -2.5, 10.0, 900.0);
|
|
let inv = proj.inverse();
|
|
|
|
let id = inv * proj.into_inner();
|
|
|
|
assert!(id.is_identity(1.0e-7));
|
|
}
|
|
|
|
#[test]
|
|
fn perspective_matrix_point_transformation() {
|
|
// https://github.com/rustsim/nalgebra/issues/640
|
|
let proj = Perspective3::new(4.0 / 3.0, 90.0, 0.1, 100.0);
|
|
let perspective_inv = proj.as_matrix().try_inverse().unwrap();
|
|
let some_point = Point3::new(1.0, 2.0, 0.0);
|
|
|
|
assert_eq!(
|
|
perspective_inv.transform_point(&some_point),
|
|
Point3::from_homogeneous(perspective_inv * some_point.coords.push(1.0)).unwrap()
|
|
);
|
|
}
|
|
|
|
#[cfg(feature = "arbitrary")]
|
|
mod quickcheck_tests {
|
|
use na::{Orthographic3, Perspective3, Point3};
|
|
|
|
quickcheck!{
|
|
fn perspective_project_unproject(pt: Point3<f64>) -> bool {
|
|
let proj = Perspective3::new(800.0 / 600.0, 3.14 / 2.0, 1.0, 1000.0);
|
|
|
|
let projected = proj.project_point(&pt);
|
|
let unprojected = proj.unproject_point(&projected);
|
|
|
|
relative_eq!(pt, unprojected, epsilon = 1.0e-7)
|
|
}
|
|
|
|
fn orthographic_project_unproject(pt: Point3<f64>) -> bool {
|
|
let proj = Orthographic3::new(1.0, 2.0, -3.0, -2.5, 10.0, 900.0);
|
|
|
|
let projected = proj.project_point(&pt);
|
|
let unprojected = proj.unproject_point(&projected);
|
|
|
|
relative_eq!(pt, unprojected, epsilon = 1.0e-7)
|
|
}
|
|
}
|
|
}
|