FillCanvas

[Utility Rust Create]

FillCanvas is a wrapper around a matrix with special methods to fill the cells.

FillCanvas provides methods to fill individual cells with a value, or multiple cells from a row/column or just all cells within an area at once.

The filled cells have a T value != the Default::default().

PS: Initially developed to have EntityIDs (from ECS) filled into a matrix based on the space they occupy on a canvas grid.

Example

```rust fn test() { let mut canvas = FillCanvas::::new(5, 10); assert!(canvas.fillrow(1, 4).issome()); assert!(canvas.fillcell(2, 2, 5).issome()); assert!(canvas.fillcell(3, 3, 9).issome()); assert!(canvas.fillarea(4, 0, 0, 1, 3).issome()); assert!(canvas.fillcol(5, 7).issome());

let expected = vec![
    4, 4, 4, 4, 0, 0, 0, 5, 0, 0, //
    4, 4, 4, 4, 0, 0, 0, 5, 0, 0, //
    0, 0, 0, 0, 0, 2, 0, 5, 0, 0, //
    0, 0, 0, 0, 0, 0, 0, 5, 0, 3, //
    1, 1, 1, 1, 1, 1, 1, 5, 1, 1, //
];

println!("{}", canvas);
assert_eq!(expected, canvas.matrix);

assert_eq!(Some(&4), canvas.get(0, 3));
assert_eq!(Some(&4), canvas.get(1, 2));
assert_eq!(Some(&5), canvas.get(3, 7));
assert_eq!(Some(&3), canvas.get(3, 9));
assert_eq!(Some(&1), canvas.get(4, 9));
assert_eq!(Some(&0), canvas.get(3, 0));
assert_eq!(Some(&0), canvas.get(0, 9));

assert_eq!(Some(&4), canvas.get_filled(0, 3));
assert_eq!(Some(&4), canvas.get_filled(1, 2));
assert_eq!(Some(&5), canvas.get_filled(3, 7));
assert_eq!(Some(&3), canvas.get_filled(3, 9));
assert_eq!(Some(&1), canvas.get_filled(4, 9));
assert_eq!(None, canvas.get_filled(3, 0));
assert_eq!(None, canvas.get_filled(0, 9));

} ```