vecmat

Low-dimensional vector and matrix structures and common operations for them

Documentation

• Master branch documentation

Usage

```rust extern crate vecmat;

use vecmat::vec::; use vecmat::mat::;

fn main() { // Create vectors let mut va = Vec3::::new(); // filled with zeros let vb = Vec3::::from(1.0, 2.0, 3.0); // from values println!("{}, {}", va, vb);

// Vector access
va[1] = vb[0]; // read and write 
va[0] += 3.0; // add-assign
println!("{}", va);

// Vector products
println!("{}", 2.0*vb); // scalar-by-vector
println!("{}", va*vb); // component-wise
println!("{}", va.dot(vb)); // dot
println!("{}", va.cross(vb)); // cross

// Distance between two vectors
println!("{}", (va - vb).length());

// Create matrices
let mut ma = Mat3::<f64>::one(); // identity 3x3 matrix
let mb = Mat3x2::<f64>::from( // 3x2 matrix from values
    1.0, 2.0, 0.0,
    0.0,-1.0, 1.0,
);
println!("{},\n{}", ma, mb);

// Access matrix components
ma[(1,1)] = 2.0; // access by (i,j) indices
ma[(0,2)] = -3.0;
ma[(2,0)] = -1.0;
println!("{}", ma);

// Transpose matrix
println!("{}", mb.transpose());

// Matrix-vector product
println!("{}", mb.dot(vb));
println!("{}", va.dot(ma));

// Matrix-matrix product
println!("{}", mb.dot(ma));

// Outer product of vectors
println!("{}", va.outer(vb));

// Determinant and inverse matrix
println!("{}", ma.det());
println!("{}", ma.inverse());

} ```

Structs:

• Vectors: VecN<T> where N is 2, 3 or 4
• Matrices: MatNxM<T> (or MatN<T> for square matrices) where N and M are 2, 3 or 4
• Transformations: map::AffineN<T> - affine transformation for vectors

Features:

• [x] vector and matrix arithmetcs (component-wise +, -, *, /)
• [x] integer vector arithmetics (div_floor and mod_floor for integer vectors)
• [x] boolean vectors (vector comparison, all, any)
• [x] dot, cross and outer products for vectors
• [x] matrix-matrix and matrix-vector multiplication
• [x] square matrix det and inverse
• [x] affine transformations for vector (with inverse)

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.