52 lines
1.3 KiB
Rust
52 lines
1.3 KiB
Rust
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#[cfg(feature = "arbitrary")]
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#[macro_use]
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extern crate quickcheck;
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#[macro_use]
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extern crate approx;
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extern crate nalgebra as na;
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use na::{Point3, Perspective3, Orthographic3};
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#[test]
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fn perspective_inverse() {
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let proj = Perspective3::new(800.0 / 600.0, 3.14 / 2.0, 1.0, 1000.0);
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let inv = proj.inverse();
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let id = inv * proj.unwrap();
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assert!(id.is_identity(1.0e-7));
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}
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#[test]
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fn orthographic_inverse() {
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let proj = Orthographic3::new(1.0, 2.0, -3.0, -2.5, 10.0, 900.0);
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let inv = proj.inverse();
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let id = inv * proj.unwrap();
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assert!(id.is_identity(1.0e-7));
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}
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#[cfg(feature = "arbitrary")]
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quickcheck!{
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fn perspective_project_unproject(pt: Point3<f64>) -> bool {
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let proj = Perspective3::new(800.0 / 600.0, 3.14 / 2.0, 1.0, 1000.0);
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let projected = proj.project_point(&pt);
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let unprojected = proj.unproject_point(&projected);
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relative_eq!(pt, unprojected, epsilon = 1.0e-7)
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}
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fn orthographic_project_unproject(pt: Point3<f64>) -> bool {
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let proj = Orthographic3::new(1.0, 2.0, -3.0, -2.5, 10.0, 900.0);
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let projected = proj.project_point(&pt);
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let unprojected = proj.unproject_point(&projected);
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relative_eq!(pt, unprojected, epsilon = 1.0e-7)
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}
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}
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