Pythagorean Triples

_.md

[ Launch Inlet ]
Gist #3200444

config.json

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inlet.js

//draws all pythagorean triples with perimeters less than specified

//max perimeter (CAUTION: high values take a long time to calculate)
var perimeter = 1000;

//storage for the triples
var triples = [];

//calculate the triples (brute force)
for(var c=1; c<perimeter; c++)
	for(var b=1; b<(perimeter-c); b++)
		for(var a=1; a<(perimeter-(b+c)); a++)
			if((a*a + b*b) === c*c)
				triples.push({A:a, B:b, C:c});

//draw the triples
var svg = d3.select("svg");
var triangles = svg.append("svg:g");

triangles.selectAll().data(triples).enter().append('svg:line')
.attr("stroke", "black")
.attr("stroke-width",.1)
.attr("stroke-opacity", 1)
.attr("x1",function(d){return d.A})
.attr("y2",function(d){return d.B})
.attr("transform", "scale(" + 3 + ")")
;