primrose/src/point.js

Syntax-highlighting text editor that renders to an HTML5 Canvas element

/*
pliny.class({
  parent: "Primrose.Text",
    name: "Point",
    description: "| [under construction]"
});
*/


export class Point {
    constructor(x, y) {
        this.set(x || 0, y || 0);
        Object.seal(this);
    }

    set(x, y) {
        this.x = x;
        this.y = y;
    }

    copy(p) {
        if (p) {
            this.x = p.x;
            this.y = p.y;
        }
    }

    toCell(character, scroll, gridBounds) {
        this.x = Math.round(this.x / character.width) + scroll.x - gridBounds.x;
        this.y = Math.floor((this.y / character.height) - 0.25) + scroll.y;
    }

    inBounds(bounds) {
        return bounds.left <= this.x
            && this.x < bounds.right
            && bounds.top <= this.y
            && this.y < bounds.bottom;
    }

    clone() {
        return new Point(this.x, this.y);
    }

    toString() {
        return `(x:${this.x}, y:${this.y})`;
    }
}