Vector2

A 2D vector with x, y components.

Constructor

const v = new Vector2(x, y) // defaults to (0, 0)

Properties

• x, y — Component values
• width — Alias for x
• height — Alias for y
• isVector2 — Type flag (true)

Methods

Setting

• set(x, y), setScalar(s), setX(x), setY(y)
• setComponent(index, value) — Set by index (0=x, 1=y)
• copy(v), fromArray(array, offset?), fromBufferAttribute(attribute, index)

Arithmetic

• add(v), addScalar(s), addVectors(a, b), addScaledVector(v, s)
• sub(v), subScalar(s), subVectors(a, b)
• multiply(v), multiplyScalar(s)
• divide(v), divideScalar(s)
• negate()

Transforms

• applyMatrix3(m) — Multiply by 3x3 matrix (implicit z=1)
• rotateAround(center, angle) — Rotate around a point

Geometry

• dot(v) — Dot product
• cross(v) — 2D cross product (returns scalar)
• angle() — Angle relative to positive x-axis
• angleTo(v) — Angle to another vector

Length & Distance

• length(), lengthSq(), manhattanLength()
• distanceTo(v), distanceToSquared(v), manhattanDistanceTo(v)
• normalize(), setLength(length)

Clamping & Rounding

• min(v), max(v), clamp(min, max), clampScalar(min, max), clampLength(min, max)
• floor(), ceil(), round(), roundToZero()

Other

• lerp(v, alpha), lerpVectors(v1, v2, alpha)
• equals(v), clone()
• toArray(array?, offset?), getComponent(index)
• random() — Random components in [0, 1)