| use splines::{Interpolation, Key, Spline}; |
| |
| #[cfg(feature = "impl-cgmath")] use cgmath as cg; |
| #[cfg(feature = "impl-nalgebra")] use nalgebra as na; |
| |
| #[test] |
| fn step_interpolation_f32() { |
| let start = Key::new(0., 0., Interpolation::Step(0.)); |
| let end = Key::new(1., 10., Interpolation::default()); |
| let spline = Spline::<f32, _>::from_vec(vec![start, end]); |
| |
| assert_eq!(spline.sample(0.), Some(10.)); |
| assert_eq!(spline.sample(0.1), Some(10.)); |
| assert_eq!(spline.sample(0.2), Some(10.)); |
| assert_eq!(spline.sample(0.5), Some(10.)); |
| assert_eq!(spline.sample(0.9), Some(10.)); |
| assert_eq!(spline.sample(1.), None); |
| assert_eq!(spline.clamped_sample(1.), Some(10.)); |
| assert_eq!(spline.sample_with_key(0.2), Some((10., &start, Some(&end)))); |
| assert_eq!(spline.clamped_sample_with_key(1.), Some((10., &end, None))); |
| } |
| |
| #[test] |
| fn step_interpolation_f64() { |
| let start = Key::new(0., 0., Interpolation::Step(0.)); |
| let end = Key::new(1., 10., Interpolation::default()); |
| let spline = Spline::<f64, _>::from_vec(vec![start, end]); |
| |
| assert_eq!(spline.sample(0.), Some(10.)); |
| assert_eq!(spline.sample(0.1), Some(10.)); |
| assert_eq!(spline.sample(0.2), Some(10.)); |
| assert_eq!(spline.sample(0.5), Some(10.)); |
| assert_eq!(spline.sample(0.9), Some(10.)); |
| assert_eq!(spline.sample(1.), None); |
| assert_eq!(spline.clamped_sample(1.), Some(10.)); |
| assert_eq!(spline.sample_with_key(0.2), Some((10., &start, Some(&end)))); |
| assert_eq!(spline.clamped_sample_with_key(1.), Some((10., &end, None))); |
| } |
| |
| #[test] |
| fn step_interpolation_0_5() { |
| let start = Key::new(0., 0., Interpolation::Step(0.5)); |
| let end = Key::new(1., 10., Interpolation::default()); |
| let spline = Spline::from_vec(vec![start, end]); |
| |
| assert_eq!(spline.sample(0.), Some(0.)); |
| assert_eq!(spline.sample(0.1), Some(0.)); |
| assert_eq!(spline.sample(0.2), Some(0.)); |
| assert_eq!(spline.sample(0.5), Some(10.)); |
| assert_eq!(spline.sample(0.9), Some(10.)); |
| assert_eq!(spline.sample(1.), None); |
| assert_eq!(spline.clamped_sample(1.), Some(10.)); |
| } |
| |
| #[test] |
| fn step_interpolation_0_75() { |
| let start = Key::new(0., 0., Interpolation::Step(0.75)); |
| let end = Key::new(1., 10., Interpolation::default()); |
| let spline = Spline::from_vec(vec![start, end]); |
| |
| assert_eq!(spline.sample(0.), Some(0.)); |
| assert_eq!(spline.sample(0.1), Some(0.)); |
| assert_eq!(spline.sample(0.2), Some(0.)); |
| assert_eq!(spline.sample(0.5), Some(0.)); |
| assert_eq!(spline.sample(0.9), Some(10.)); |
| assert_eq!(spline.sample(1.), None); |
| assert_eq!(spline.clamped_sample(1.), Some(10.)); |
| } |
| |
| #[test] |
| fn step_interpolation_1() { |
| let start = Key::new(0., 0., Interpolation::Step(1.)); |
| let end = Key::new(1., 10., Interpolation::default()); |
| let spline = Spline::from_vec(vec![start, end]); |
| |
| assert_eq!(spline.sample(0.), Some(0.)); |
| assert_eq!(spline.sample(0.1), Some(0.)); |
| assert_eq!(spline.sample(0.2), Some(0.)); |
| assert_eq!(spline.sample(0.5), Some(0.)); |
| assert_eq!(spline.sample(0.9), Some(0.)); |
| assert_eq!(spline.sample(1.), None); |
| assert_eq!(spline.clamped_sample(1.), Some(10.)); |
| } |
| |
| #[test] |
| fn linear_interpolation() { |
| let start = Key::new(0., 0., Interpolation::Linear); |
| let end = Key::new(1., 10., Interpolation::default()); |
| let spline = Spline::from_vec(vec![start, end]); |
| |
| assert_eq!(spline.sample(0.), Some(0.)); |
| assert_eq!(spline.sample(0.1), Some(1.)); |
| assert_eq!(spline.sample(0.2), Some(2.)); |
| assert_eq!(spline.sample(0.5), Some(5.)); |
| assert_eq!(spline.sample(0.9), Some(9.)); |
| assert_eq!(spline.sample(1.), None); |
| assert_eq!(spline.clamped_sample(1.), Some(10.)); |
| } |
| |
| #[test] |
| fn linear_interpolation_several_keys() { |
| let start = Key::new(0., 0., Interpolation::Linear); |
| let k1 = Key::new(1., 5., Interpolation::Linear); |
| let k2 = Key::new(2., 0., Interpolation::Linear); |
| let k3 = Key::new(3., 1., Interpolation::Linear); |
| let k4 = Key::new(10., 2., Interpolation::Linear); |
| let end = Key::new(11., 4., Interpolation::default()); |
| let spline = Spline::from_vec(vec![start, k1, k2, k3, k4, end]); |
| |
| assert_eq!(spline.sample(0.), Some(0.)); |
| assert_eq!(spline.sample(0.1), Some(0.5)); |
| assert_eq!(spline.sample(0.2), Some(1.)); |
| assert_eq!(spline.sample(0.5), Some(2.5)); |
| assert_eq!(spline.sample(0.9), Some(4.5)); |
| assert_eq!(spline.sample(1.), Some(5.)); |
| assert_eq!(spline.sample(1.5), Some(2.5)); |
| assert_eq!(spline.sample(2.), Some(0.)); |
| assert_eq!(spline.sample(2.75), Some(0.75)); |
| assert_eq!(spline.sample(3.), Some(1.)); |
| assert_eq!(spline.sample(6.5), Some(1.5)); |
| assert_eq!(spline.sample(10.), Some(2.)); |
| assert_eq!(spline.clamped_sample(11.), Some(4.)); |
| } |
| |
| #[test] |
| fn several_interpolations_several_keys() { |
| let start = Key::new(0., 0., Interpolation::Step(0.5)); |
| let k1 = Key::new(1., 5., Interpolation::Linear); |
| let k2 = Key::new(2., 0., Interpolation::Step(0.1)); |
| let k3 = Key::new(3., 1., Interpolation::Linear); |
| let k4 = Key::new(10., 2., Interpolation::Linear); |
| let end = Key::new(11., 4., Interpolation::default()); |
| let spline = Spline::from_vec(vec![start, k1, k2, k3, k4, end]); |
| |
| assert_eq!(spline.sample(0.), Some(0.)); |
| assert_eq!(spline.sample(0.1), Some(0.)); |
| assert_eq!(spline.sample(0.2), Some(0.)); |
| assert_eq!(spline.sample(0.5), Some(5.)); |
| assert_eq!(spline.sample(0.9), Some(5.)); |
| assert_eq!(spline.sample(1.), Some(5.)); |
| assert_eq!(spline.sample(1.5), Some(2.5)); |
| assert_eq!(spline.sample(2.), Some(0.)); |
| assert_eq!(spline.sample(2.05), Some(0.)); |
| assert_eq!(spline.sample(2.099), Some(0.)); |
| assert_eq!(spline.sample(2.75), Some(1.)); |
| assert_eq!(spline.sample(3.), Some(1.)); |
| assert_eq!(spline.sample(6.5), Some(1.5)); |
| assert_eq!(spline.sample(10.), Some(2.)); |
| assert_eq!(spline.clamped_sample(11.), Some(4.)); |
| } |
| |
| #[cfg(feature = "impl-cgmath")] |
| #[test] |
| fn cgmath_vector_interpolation() { |
| use splines::Interpolate; |
| |
| let start = cg::Vector2::new(0.0, 0.0); |
| let mid = cg::Vector2::new(0.5, 0.5); |
| let end = cg::Vector2::new(1.0, 1.0); |
| |
| assert_eq!(Interpolate::lerp(start, end, 0.0), start); |
| assert_eq!(Interpolate::lerp(start, end, 1.0), end); |
| assert_eq!(Interpolate::lerp(start, end, 0.5), mid); |
| } |
| |
| #[cfg(feature = "impl-nalgebra")] |
| #[test] |
| fn nalgebra_vector_interpolation() { |
| use splines::Interpolate; |
| |
| let start = na::Vector2::new(0.0, 0.0); |
| let mid = na::Vector2::new(0.5, 0.5); |
| let end = na::Vector2::new(1.0, 1.0); |
| |
| assert_eq!(Interpolate::lerp(start, end, 0.0), start); |
| assert_eq!(Interpolate::lerp(start, end, 1.0), end); |
| assert_eq!(Interpolate::lerp(start, end, 0.5), mid); |
| } |
| |
| #[test] |
| fn add_key_empty() { |
| let mut spline: Spline<f32, f32> = Spline::from_vec(vec![]); |
| spline.add(Key::new(0., 0., Interpolation::Linear)); |
| |
| assert_eq!(spline.keys(), &[Key::new(0., 0., Interpolation::Linear)]); |
| } |
| |
| #[test] |
| fn add_key() { |
| let start = Key::new(0., 0., Interpolation::Step(0.5)); |
| let k1 = Key::new(1., 5., Interpolation::Linear); |
| let k2 = Key::new(2., 0., Interpolation::Step(0.1)); |
| let k3 = Key::new(3., 1., Interpolation::Linear); |
| let k4 = Key::new(10., 2., Interpolation::Linear); |
| let end = Key::new(11., 4., Interpolation::default()); |
| let new = Key::new(2.4, 40., Interpolation::Linear); |
| let mut spline = Spline::from_vec(vec![start, k1, k2.clone(), k3, k4, end]); |
| |
| assert_eq!(spline.keys(), &[start, k1, k2, k3, k4, end]); |
| spline.add(new); |
| assert_eq!(spline.keys(), &[start, k1, k2, new, k3, k4, end]); |
| } |
| |
| #[test] |
| fn remove_element_empty() { |
| let mut spline: Spline<f32, f32> = Spline::from_vec(vec![]); |
| let removed = spline.remove(0); |
| |
| assert_eq!(removed, None); |
| assert!(spline.is_empty()); |
| } |
| |
| #[test] |
| fn remove_element() { |
| let start = Key::new(0., 0., Interpolation::Step(0.5)); |
| let k1 = Key::new(1., 5., Interpolation::Linear); |
| let k2 = Key::new(2., 0., Interpolation::Step(0.1)); |
| let k3 = Key::new(3., 1., Interpolation::Linear); |
| let k4 = Key::new(10., 2., Interpolation::Linear); |
| let end = Key::new(11., 4., Interpolation::default()); |
| let mut spline = Spline::from_vec(vec![start, k1, k2.clone(), k3, k4, end]); |
| let removed = spline.remove(2); |
| |
| assert_eq!(removed, Some(k2)); |
| assert_eq!(spline.len(), 5); |
| } |