d3-3d/tests/lines-test.js

import { test } from 'tape';
import * as d3 from '../';

test('lines don\'t have a draw function', function(t){
    var _3d = d3._3d().shape('LINE');
    t.equal(_3d.draw(), undefined);
    t.end();
});

test('centroid calculation for lines', function(t){
	var _3d = d3._3d().shape('LINE').x(function(d){ return d.x; }).y(function(d){ return d.y; }).z(function(d){ return d.z; });
	var data = [
		[{x:  0, y:   0, z:   0}, {x:    0, y:    0, z:    0}],
		[{x:  1, y:   2, z:   3}, {x:    3, y:    2, z:    1}],
		[{x: 10, y: 9.5, z: 8.6}, {x: 34.3, y: 11.2, z: 27.4}]
	];
	var line0 = _3d(data)[0];
	var line1 = _3d(data)[1];
	var line2 = _3d(data)[2];
	t.deepEqual(line0.centroid, {x:     0, y:     0, z:  0});
	t.deepEqual(line1.centroid, {x:     2, y:     2, z:  2});
	t.deepEqual(line2.centroid, {x: 22.15, y: 10.35, z: 18});
	t.end();
});