58 lines
2.3 KiB
Rust
58 lines
2.3 KiB
Rust
use std::fmt;
|
||
use std::ops::{Mul, Neg, MulAssign};
|
||
|
||
use rand::{Rand, Rng};
|
||
use num::One;
|
||
use structs::matrix::{Matrix3, Matrix4};
|
||
use traits::structure::{Dimension, Column, BaseFloat, BaseNum};
|
||
use traits::operations::{Inverse, ApproxEq};
|
||
use traits::geometry::{Transform, Transformation, ToHomogeneous};
|
||
|
||
use structs::vector::{Vector1, Vector2, Vector3};
|
||
use structs::point::{Point2, Point3};
|
||
use structs::rotation::{Rotation2, Rotation3};
|
||
use structs::isometry::{Isometry2, Isometry3};
|
||
|
||
#[cfg(feature="arbitrary")]
|
||
use quickcheck::{Arbitrary, Gen};
|
||
|
||
// FIXME: the name is not explicit at all but coherent with the other tree-letters names…
|
||
/// A two-dimensional similarity transformation.
|
||
///
|
||
/// This is a composition of a uniform scale, followed by a rotation, followed by a translation.
|
||
/// Vectors `Vector2` are not affected by the translational component of this transformation while
|
||
/// points `Point2` are.
|
||
/// Similarity transformations conserve angles. Distances are multiplied by some constant (the
|
||
/// scale factor). The scale factor cannot be zero.
|
||
#[repr(C)]
|
||
#[derive(Eq, PartialEq, RustcEncodable, RustcDecodable, Clone, Debug, Copy)]
|
||
pub struct Similarity2<N> {
|
||
/// The uniform scale applicable by this similarity transformation.
|
||
scale: N,
|
||
/// The isometry applicable by this similarity transformation.
|
||
pub isometry: Isometry2<N>
|
||
}
|
||
|
||
/// A three-dimensional similarity transformation.
|
||
///
|
||
/// This is a composition of a scale, followed by a rotation, followed by a translation.
|
||
/// Vectors `Vector3` are not affected by the translational component of this transformation while
|
||
/// points `Point3` are.
|
||
/// Similarity transformations conserve angles. Distances are multiplied by some constant (the
|
||
/// scale factor). The scale factor cannot be zero.
|
||
#[repr(C)]
|
||
#[derive(Eq, PartialEq, RustcEncodable, RustcDecodable, Clone, Debug, Copy)]
|
||
pub struct Similarity3<N> {
|
||
/// The uniform scale applicable by this similarity transformation.
|
||
scale: N,
|
||
/// The isometry applicable by this similarity transformation.
|
||
pub isometry: Isometry3<N>
|
||
}
|
||
|
||
|
||
similarity_impl!(Similarity2, Isometry2, Rotation2, Vector2, Vector1, Point2, Matrix3);
|
||
dim_impl!(Similarity2, 2);
|
||
|
||
similarity_impl!(Similarity3, Isometry3, Rotation3, Vector3, Vector3, Point3, Matrix4);
|
||
dim_impl!(Similarity3, 3);
|