Point

Point is the base two-dimensional point class of maptalks (not a Geometry), inheriting from Position. It represents a 2D coordinate point and provides a range of mathematical operations (addition/subtraction, rotation, rounding, normalization, angle calculation, etc.), forming the foundation for other geometries and coordinate systems.

import { Point } from "maptalks";
// Usage example
const p = new Point(100, 200);
console.log(p.x, p.y); // 100 200

Constructor

new Point(x, y[, z])
// or
new Point([x, y[, z]])
// or
new Point({ x, y[, z] })

Parameters:

• x — The x coordinate value, or an [x, y[, z]] array, or an { x, y[, z] } object.
• y — The y coordinate value.
• z — (Optional) The third-dimensional coordinate value.

options

Point has no options.

Methods

• closeTo(p, delta): boolean — Returns whether the current point is close to point p (each axis difference is less than delta).
• unit(): Point — Returns the unit (normalized) vector of the current point.
• perp(): Point — Returns the perpendicular vector of the current point rotated 90° counter-clockwise.
• angleWith(b): number — Returns the angle (in radians) between the current point and point b.
• rotate(a): Point — Returns the point after rotating the current point around the origin by angle a (in radians).
• abs(): Point — Returns a point with the absolute value of each axis.
• round(): Point — Returns a point with each axis rounded to the nearest integer.
• ceil(): Point — Returns a point with each axis rounded up.
• floor(): Point — Returns a point with each axis rounded down.
• copy(): Point — Returns a deep copy of the current point.
• toFixed(n): Point — Returns a point with each axis fixed to n decimal places.
• add(x, y): Point — Returns the point after adding (x, y) to the current point.
• sub(x, y): Point — Returns the point after subtracting (x, y) from the current point.
• multi(ratio): Point — Returns the point after scaling the current point by ratio.
• equals(c): boolean — Returns whether the current point equals point c.

Static Methods

Point has no static methods.

Events

Point has no events.