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import roundNode from "./round.js";
import squarify from "./squarify.js";
import {required} from "../accessors.js";
import constant, {constantZero} from "../constant.js";
export default function() {
var tile = squarify,
round = false,
dx = 1,
dy = 1,
paddingStack = [0],
paddingInner = constantZero,
paddingTop = constantZero,
paddingRight = constantZero,
paddingBottom = constantZero,
paddingLeft = constantZero;
function treemap(root) {
root.x0 =
root.y0 = 0;
root.x1 = dx;
root.y1 = dy;
root.eachBefore(positionNode);
paddingStack = [0];
if (round) root.eachBefore(roundNode);
return root;
}
function positionNode(node) {
var p = paddingStack[node.depth],
x0 = node.x0 + p,
y0 = node.y0 + p,
x1 = node.x1 - p,
y1 = node.y1 - p;
if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
node.x0 = x0;
node.y0 = y0;
node.x1 = x1;
node.y1 = y1;
if (node.children) {
p = paddingStack[node.depth + 1] = paddingInner(node) / 2;
x0 += paddingLeft(node) - p;
y0 += paddingTop(node) - p;
x1 -= paddingRight(node) - p;
y1 -= paddingBottom(node) - p;
if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
tile(node, x0, y0, x1, y1);
}
}
treemap.round = function(x) {
return arguments.length ? (round = !!x, treemap) : round;
};
treemap.size = function(x) {
return arguments.length ? (dx = +x[0], dy = +x[1], treemap) : [dx, dy];
};
treemap.tile = function(x) {
return arguments.length ? (tile = required(x), treemap) : tile;
};
treemap.padding = function(x) {
return arguments.length ? treemap.paddingInner(x).paddingOuter(x) : treemap.paddingInner();
};
treemap.paddingInner = function(x) {
return arguments.length ? (paddingInner = typeof x === "function" ? x : constant(+x), treemap) : paddingInner;
};
treemap.paddingOuter = function(x) {
return arguments.length ? treemap.paddingTop(x).paddingRight(x).paddingBottom(x).paddingLeft(x) : treemap.paddingTop();
};
treemap.paddingTop = function(x) {
return arguments.length ? (paddingTop = typeof x === "function" ? x : constant(+x), treemap) : paddingTop;
};
treemap.paddingRight = function(x) {
return arguments.length ? (paddingRight = typeof x === "function" ? x : constant(+x), treemap) : paddingRight;
};
treemap.paddingBottom = function(x) {
return arguments.length ? (paddingBottom = typeof x === "function" ? x : constant(+x), treemap) : paddingBottom;
};
treemap.paddingLeft = function(x) {
return arguments.length ? (paddingLeft = typeof x === "function" ? x : constant(+x), treemap) : paddingLeft;
};
return treemap;
}