tiny.linear.Vec2

1pub const Vec2 = extern struct {2    x: f32 = 0,3    y: f32 = 0,45    pub const zero: Vec2 = .{};67    pub fn init(x: f32, y: f32) Vec2 {8        return .{ .x = x, .y = y };9    }1011    pub fn splat(value: f32) Vec2 {12        return .{ .x = value, .y = value };13    }1415    pub fn fromArray(lanes: [2]f32) Vec2 {16        return .{ .x = lanes[0], .y = lanes[1] };17    }1819    pub fn toArray(v: Vec2) [2]f32 {20        return .{ v.x, v.y };21    }2223    pub fn add(a: Vec2, b: Vec2) Vec2 {24        return .{ .x = a.x + b.x, .y = a.y + b.y };25    }2627    pub fn sub(a: Vec2, b: Vec2) Vec2 {28        return .{ .x = a.x - b.x, .y = a.y - b.y };29    }3031    /// Lane-wise product.32    pub fn mul(a: Vec2, b: Vec2) Vec2 {33        return .{ .x = a.x * b.x, .y = a.y * b.y };34    }3536    pub fn scale(v: Vec2, s: f32) Vec2 {37        return .{ .x = v.x * s, .y = v.y * s };38    }3940    pub fn negate(v: Vec2) Vec2 {41        return .{ .x = -v.x, .y = -v.y };42    }4344    pub fn dot(a: Vec2, b: Vec2) f32 {45        return a.x * b.x + a.y * b.y;46    }4748    pub fn lengthSq(v: Vec2) f32 {49        return v.dot(v);50    }5152    pub fn length(v: Vec2) f32 {53        return @sqrt(v.lengthSq());54    }5556    pub fn distanceSq(a: Vec2, b: Vec2) f32 {57        return a.sub(b).lengthSq();58    }5960    pub fn distance(a: Vec2, b: Vec2) f32 {61        return @sqrt(a.distanceSq(b));62    }6364    /// The unit vector along `v`, or null when its length is at most65    /// `min_length` or is NaN.66    pub fn normalized(v: Vec2, min_length: f32) ?Vec2 {67        assert(min_length >= 0);68        const len = v.length();69        if (!(len > min_length)) return null;70        return v.scale(1 / len);71    }7273    /// `a` at `t = 0` and `b` at `t = 1`.74    pub fn lerp(a: Vec2, b: Vec2, t: f32) Vec2 {75        return a.add(b.sub(a).scale(t));76    }7778    pub fn min(a: Vec2, b: Vec2) Vec2 {79        return .{ .x = @min(a.x, b.x), .y = @min(a.y, b.y) };80    }8182    pub fn max(a: Vec2, b: Vec2) Vec2 {83        return .{ .x = @max(a.x, b.x), .y = @max(a.y, b.y) };84    }8586    pub fn abs(v: Vec2) Vec2 {87        return .{ .x = @abs(v.x), .y = @abs(v.y) };88    }89};

1pub const Vec2 = vector.Vec2;