Component-wise multiplication for Vector2

[alexkirsz]

Hey,

I don't see an obvious way to do component-wise multiplication and division for Vector2-like types. Is this a deliberate API decision or just a use case that hasn't showed up?

Example usage:

let v1 = Vector2::new(1, 2);
let v2 = Vector2::new(3, 4);
let v3 = v1.component_mul(&v2); // x: 3, y: 8

See also: https://docs.rs/nalgebra/0.24.1/nalgebra/base/struct.Matrix.html#method.component_mul

Cheers,
Alex

[nical]

Hi,

Sounds good to me. I suspect that the need hasn't shown up enough for someone to add the API but it makes sense.

I'm wondering if in addition to a properly explicit function like component_mul, adding a Mul operator would make sense. I'm used to having it in glsl.

[alexkirsz]

@nical Thanks for the quick implementation!

I think it would make sense to also have component-wise division, as well as component-wise ceiling division for integer types.

See:

• Integer division method or operator that rounds up rust-lang/rfcs#2844
• https://docs.rs/nalgebra/0.25.3/nalgebra/base/struct.Matrix.html#method.component_div