shape-expand-reduce v1.0.0

shape-expand-reduce

Node.js package for expading/reducing a shapes

Installation

npm install shape-expand-reduce

How to use

• Import the expand/reduce function with var ... = require("shape-expand-reduce");
• Function has will expect 3 arguments (2 optional)
• points is a collection of points in space which describes original shape. Collection items can have 2 formats ( Array[number (x), number (y)] or Object{x: number, y: number}). Given input format will be reused for output.
• factor (default 1.0) is by what amount should the shape be expanded/reduced
• absolute (default true) says if factor is absolute or relative number (Still to be implemented)
• Function will return new Array with transformed points (based on given points input format)

Example

// Import module
var expander = require("shape-expand-reduce");

// Create square shape
var squareShape = [
    [0, 0],
    [10, 0],
    [0, 10],
    [0, 0]
];

// Create expanded shape (by 1) from square
var expandedShape = expander(squareShape, 1);

TODO

Last argument is absolute and is currently not implemented