@foblex/2d
Version:
An Angular library for 2D geometric computations, providing classes and utilities for manipulating points, lines, vectors, rectangles, arcs, and transformations.
69 lines • 11.8 kB
JavaScript
export class PointExtensions {
static castToPoint(value) {
return value || PointExtensions.initialize();
}
static initialize(x = 0, y = 0) {
return { x: x, y: y };
}
static copy(point) {
return PointExtensions.initialize(point.x, point.y);
}
static isEqual(point1, point2) {
return point1.x === point2.x && point1.y === point2.y;
}
static sum(point1, point2) {
return { x: (point1.x + point2.x), y: (point1.y + point2.y) };
}
static sub(point1, point2) {
return { x: (point1.x - point2.x), y: (point1.y - point2.y) };
}
static div(point, value) {
return { x: (point.x / value), y: (point.y / value) };
}
static mult(point, value) {
return { x: (point.x * value), y: (point.y * value) };
}
static interpolatePoints(point1, point2, t) {
const oneMinusT = 1.0 - t;
return PointExtensions.initialize(point1.x * oneMinusT + point2.x * t, point1.y * oneMinusT + point2.y * t);
}
static roundTo(point, size) {
const xCount = Math.trunc(point.x / size);
const yCount = Math.trunc(point.y / size);
return { x: xCount * size, y: yCount * size };
}
static hypotenuse(point1, point2) {
const a = (point2.x - point1.x);
const b = (point2.y - point1.y);
return Math.abs(Math.sqrt(a * a + b * b));
}
static distance(point1, point2) {
const dx = point1.x - point2.x;
const dy = point1.y - point2.y;
return Math.sqrt(dx * dx + dy * dy);
}
static getMinimum(point1, point2) {
return PointExtensions.initialize(Math.min(point1.x, point2.x), Math.min(point1.y, point2.y));
}
static getMaximum(point1, point2) {
return PointExtensions.initialize(Math.max(point1.x, point2.x), Math.max(point1.y, point2.y));
}
static matrixTransform(point, element) {
let result = PointExtensions.initialize(point.x, point.y);
let matrix = element.getScreenCTM();
if (matrix) {
const svgPoint = element.createSVGPoint();
svgPoint.x = point.x;
svgPoint.y = point.y;
result = svgPoint.matrixTransform(matrix.inverse());
}
return result;
}
static elementTransform(point, element) {
let result = PointExtensions.initialize(point.x, point.y);
let matrix = element.getBoundingClientRect();
result = PointExtensions.sub(result, PointExtensions.initialize(matrix.left, matrix.top));
return result;
}
}
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point2.x), y: (point1.y - point2.y) };\n  }\n\n  public static div(point: IPoint, value: number): IPoint {\n    return { x: (point.x / value), y: (point.y / value) };\n  }\n\n  public static mult(point: IPoint, value: number): IPoint {\n    return { x: (point.x * value), y: (point.y * value) };\n  }\n\n  public static interpolatePoints(point1: IPoint, point2: IPoint, t: number): IPoint {\n    const oneMinusT = 1.0 - t;\n\n    return PointExtensions.initialize(\n      point1.x * oneMinusT + point2.x * t,\n      point1.y * oneMinusT + point2.y * t\n    );\n  }\n\n  public static roundTo(point: IPoint, size: number): IPoint {\n    const xCount = Math.trunc(point.x / size);\n    const yCount = Math.trunc(point.y / size);\n    return { x: xCount * size, y: yCount * size };\n  }\n\n  public static hypotenuse(point1: IPoint, point2: IPoint): number {\n    const a = (point2.x - point1.x);\n    const b = (point2.y - point1.y);\n    return Math.abs(Math.sqrt(a * a + b * b));\n  }\n\n  public static distance(point1: IPoint, point2: IPoint): number {\n    const dx = point1.x - point2.x;\n    const dy = point1.y - point2.y;\n    return Math.sqrt(dx * dx + dy * dy);\n  }\n\n  public static getMinimum(point1: IPoint, point2: IPoint): IPoint {\n    return PointExtensions.initialize(\n      Math.min(point1.x, point2.x),\n      Math.min(point1.y, point2.y)\n    );\n  }\n\n  public static getMaximum(point1: IPoint, point2: IPoint): IPoint {\n    return PointExtensions.initialize(\n      Math.max(point1.x, point2.x),\n      Math.max(point1.y, point2.y)\n    );\n  }\n\n  public static matrixTransform(point: IPoint, element: SVGSVGElement): IPoint {\n\n    let result: IPoint = PointExtensions.initialize(point.x, point.y);\n\n    let matrix = element.getScreenCTM();\n    if (matrix) {\n      const svgPoint = element.createSVGPoint();\n      svgPoint.x = point.x;\n      svgPoint.y = point.y;\n      result = svgPoint.matrixTransform(matrix.inverse());\n    }\n    return result;\n  }\n\n  public static elementTransform(point: IPoint, element: HTMLElement | SVGElement): IPoint {\n    let result: IPoint = PointExtensions.initialize(point.x, point.y);\n\n    let matrix = element.getBoundingClientRect();\n\n    result = PointExtensions.sub(result, PointExtensions.initialize(matrix.left, matrix.top));\n\n    return result;\n  }\n}\n"]}