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import { intersectCircle } from './intersect/intersect-circle.js';
import { intersectEllipse } from './intersect/intersect-ellipse.js';
import { intersectPolygon } from './intersect/intersect-polygon.js';
import { intersectRect } from './intersect/intersect-rect.js';
export { shapes, setShapes };
var shapes = {
rect,
ellipse,
circle,
diamond,
};
function setShapes(value) {
shapes = value;
}
function rect(parent, bbox, node) {
var shapeSvg = parent
.insert('rect', ':first-child')
.attr('rx', node.rx)
.attr('ry', node.ry)
.attr('x', -bbox.width / 2)
.attr('y', -bbox.height / 2)
.attr('width', bbox.width)
.attr('height', bbox.height);
node.intersect = function (point) {
return intersectRect(node, point);
};
return shapeSvg;
}
function ellipse(parent, bbox, node) {
var rx = bbox.width / 2;
var ry = bbox.height / 2;
var shapeSvg = parent
.insert('ellipse', ':first-child')
.attr('x', -bbox.width / 2)
.attr('y', -bbox.height / 2)
.attr('rx', rx)
.attr('ry', ry);
node.intersect = function (point) {
return intersectEllipse(node, rx, ry, point);
};
return shapeSvg;
}
function circle(parent, bbox, node) {
var r = Math.max(bbox.width, bbox.height) / 2;
var shapeSvg = parent
.insert('circle', ':first-child')
.attr('x', -bbox.width / 2)
.attr('y', -bbox.height / 2)
.attr('r', r);
node.intersect = function (point) {
return intersectCircle(node, r, point);
};
return shapeSvg;
}
// Circumscribe an ellipse for the bounding box with a diamond shape. I derived
// the function to calculate the diamond shape from:
// http://mathforum.org/kb/message.jspa?messageID=3750236
function diamond(parent, bbox, node) {
var w = (bbox.width * Math.SQRT2) / 2;
var h = (bbox.height * Math.SQRT2) / 2;
var points = [
{ x: 0, y: -h },
{ x: -w, y: 0 },
{ x: 0, y: h },
{ x: w, y: 0 },
];
var shapeSvg = parent.insert('polygon', ':first-child').attr(
'points',
points
.map(function (p) {
return p.x + ',' + p.y;
})
.join(' ')
);
node.intersect = function (p) {
return intersectPolygon(node, points, p);
};
return shapeSvg;
}
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