# vmath

Provide vector math operations.

#### Source code

    from typing import overload, Iterator

    class _vecF[T]:
        ONE: T
        ZERO: T

        def __add__(self, other: T) -> T: ...
        def __sub__(self, other: T) -> T: ...
        @overload
        def __mul__(self, other: float) -> T: ...
        @overload
        def __mul__(self, other: T) -> T: ...
        def __truediv__(self, other: float) -> T: ...

        def dot(self, other: T) -> float: ...
        def length(self) -> float: ...
        def length_squared(self) -> float: ...
        def normalize(self) -> T: ...

        # dummy iter for unpacking
        def __iter__(self) -> Iterator[float]: ...

    class _vecI[T]:
        ONE: T
        ZERO: T

        def __add__(self, other: T) -> T: ...
        def __sub__(self, other: T) -> T: ...
        @overload
        def __mul__(self, other: int) -> T: ...
        @overload
        def __mul__(self, other: T) -> T: ...
        def __floordiv__(self, other: int) -> T: ...

        def __hash__(self) -> int: ...

        def dot(self, other: T) -> int: ...

        # dummy iter for unpacking
        def __iter__(self) -> Iterator[int]: ...

    class vec2(_vecF['vec2']):
        LEFT: vec2
        RIGHT: vec2
        UP: vec2
        DOWN: vec2

        @property
        def x(self) -> float: ...
        @property
        def y(self) -> float: ...

        def with_x(self, x: float) -> vec2: ...
        def with_y(self, y: float) -> vec2: ...
        def with_z(self, z: float) -> vec3: ...

        @overload
        def __init__(self, x: float, y: float) -> None: ...
        @overload
        def __init__(self, xy: vec2i) -> None: ...

        def rotate(self, radians: float) -> vec2:
            """Rotate the vector by `radians`.

            + If y axis is top to bottom, positive value means clockwise (default)
            + If y axis is bottom to top, positive value means counter-clockwise
            """

        @staticmethod
        def angle(__from: vec2, __to: vec2) -> float:
            """Return the angle in radians between vectors `from` and `to`.

            The result range is `[-pi, pi]`.

            + If y axis is top to bottom, positive value means clockwise (default)
            + If y axis is bottom to top, positive value means counter-clockwise
            """

        @staticmethod
        def smooth_damp(current: vec2, target: vec2, current_velocity: vec2, smooth_time: float, max_speed: float, delta_time: float) -> tuple[vec2, vec2]:
            """Smoothly change a vector towards a desired goal over time.

            Returns a new value that is closer to the target and current velocity.
            """

    class mat3x3:
        def __init__(self, _11, _12, _13, _21, _22, _23, _31, _32, _33) -> None: ...

        def __getitem__(self, index: tuple[int, int]) -> float: ...
        def __setitem__(self, index: tuple[int, int], value: float) -> None: ...

        @overload
        def __matmul__(self, other: mat3x3) -> mat3x3: ...
        @overload
        def __matmul__(self, other: vec3) -> vec3: ...

        def __invert__(self) -> mat3x3: ...

        def matmul(self, other: mat3x3, out: mat3x3) -> mat3x3 | None: ...
        def determinant(self) -> float: ...

        def copy(self) -> mat3x3: ...
        def inverse(self) -> mat3x3: ...

        def copy_(self, other: mat3x3) -> None: ...
        def inverse_(self) -> None: ...

        @staticmethod
        def zeros() -> mat3x3: ...
        @staticmethod
        def identity() -> mat3x3: ...

        # affine transformations
        @staticmethod
        def trs(t: vec2, r: float, s: vec2) -> mat3x3: ...

        def copy_trs_(self, t: vec2, r: float, s: vec2) -> None: ...

        def t(self) -> vec2: ...
        def r(self) -> float: ...
        def s(self) -> vec2: ...

        def transform_point(self, p: vec2) -> vec2: ...
        def transform_vector(self, v: vec2) -> vec2: ...

    class vec2i(_vecI['vec2i']):
        LEFT: vec2i
        RIGHT: vec2i
        UP: vec2i
        DOWN: vec2i

        @property
        def x(self) -> int: ...
        @property
        def y(self) -> int: ...

        def with_x(self, x: int) -> vec2i: ...
        def with_y(self, y: int) -> vec2i: ...

        def __init__(self, x: int, y: int) -> None: ...

    class vec3i(_vecI['vec3i']):
        @property
        def x(self) -> int: ...
        @property
        def y(self) -> int: ...
        @property
        def z(self) -> int: ...

        def with_x(self, x: int) -> vec3i: ...
        def with_y(self, y: int) -> vec3i: ...
        def with_z(self, z: int) -> vec3i: ...

        def __init__(self, x: int, y: int, z: int) -> None: ...

    class vec4i(_vecI['vec4i']):
        @property
        def x(self) -> int: ...
        @property
        def y(self) -> int: ...
        @property
        def z(self) -> int: ...
        @property
        def w(self) -> int: ...

        def with_x(self, x: int) -> vec4i: ...
        def with_y(self, y: int) -> vec4i: ...
        def with_z(self, z: int) -> vec4i: ...
        def with_w(self, w: int) -> vec4i: ...

        def __init__(self, x: int, y: int, z: int, w: int) -> None: ...

    class vec3(_vecF['vec3']):
        @property
        def x(self) -> float: ...
        @property
        def y(self) -> float: ...
        @property
        def z(self) -> float: ...

        @property
        def xy(self) -> vec2: ...

        def with_x(self, x: float) -> vec3: ...
        def with_y(self, y: float) -> vec3: ...
        def with_z(self, z: float) -> vec3: ...
        def with_xy(self, xy: vec2) -> vec3: ...

        @overload
        def __init__(self, x: float, y: float, z: float) -> None: ...
        @overload
        def __init__(self, xyz: vec3i) -> None: ...

    # Color32
    class color32:
        def __new__(cls, r: int, g: int, b: int, a: int) -> 'color32': ...
        def __eq__(self, other: object) -> bool: ...
        def __ne__(self, other: object) -> bool: ...
        def __repr__(self) -> str: ...
        def __hash__(self) -> int: ...

        @property
        def r(self) -> int: ...
        @property
        def g(self) -> int: ...
        @property
        def b(self) -> int: ...
        @property
        def a(self) -> int: ...

        def with_r(self, r: int) -> 'color32': ...
        def with_g(self, g: int) -> 'color32': ...
        def with_b(self, b: int) -> 'color32': ...
        def with_a(self, a: int) -> 'color32': ...

        @staticmethod
        def from_hex(hex: str) -> 'color32': ...
        @staticmethod
        def from_vec3(vec: vec3) -> 'color32': ...
        @staticmethod
        def from_vec3i(vec: vec3i) -> 'color32': ...

        def to_hex(self) -> str: ...
        def to_vec3(self) -> vec3: ...
        def to_vec3i(self) -> vec3i: ...

        def to_rgb565(self) -> int: ...

        def ansi_fg(self, text: str) -> str: ...
        def ansi_bg(self, text: str) -> str: ...

        @staticmethod
        def alpha_blend(src: color32, dst: color32 | None) -> color32: ...

    def rgb(r: int, g: int, b: int) -> color32: ...
    def rgba(r: int, g: int, b: int, a: float) -> color32: ...