vis.js is a dynamic, browser-based visualization library
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'use strict';
import CircleImageBase from '../util/CircleImageBase'
class Circle extends CircleImageBase {
constructor(options, body, labelModule) {
super(options, body, labelModule)
}
resize(ctx, selected) {
if (this.width === undefined) {
var margin = 5;
var textSize = this.labelModule.getTextSize(ctx, selected);
var diameter = Math.max(textSize.width, textSize.height) + 2 * margin;
this.options.size = diameter / 2;
this.width = diameter;
this.height = diameter;
this.radius = 0.5*this.width;
}
}
draw(ctx, x, y, selected, hover) {
this.resize(ctx, selected);
this.left = x - this.width / 2;
this.top = y - this.height / 2;
this._drawRawCircle(ctx, x, y, selected, hover, this.options.size);
this.boundingBox.top = y - this.options.size;
this.boundingBox.left = x - this.options.size;
this.boundingBox.right = x + this.options.size;
this.boundingBox.bottom = y + this.options.size;
this.updateBoundingBox(x,y);
this.labelModule.draw(ctx, x, y, selected);
}
updateBoundingBox(x,y) {
this.boundingBox.top = y - this.options.size;
this.boundingBox.left = x - this.options.size;
this.boundingBox.right = x + this.options.size;
this.boundingBox.bottom = y + this.options.size;
}
distanceToBorder(ctx, angle) {
this.resize(ctx);
var a = this.width / 2;
var b = this.height / 2;
var w = (Math.sin(angle) * a);
var h = (Math.cos(angle) * b);
return a * b / Math.sqrt(w * w + h * h);
}
}
export default Circle;