vis.js is a dynamic, browser-based visualization library
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class NodeBase {
constructor(options, body, labelModule) {
this.body = body;
this.labelModule = labelModule;
this.setOptions(options);
this.top = undefined;
this.left = undefined;
this.height = undefined;
this.width = undefined;
this.radius = undefined;
this.margin = undefined;
this.boundingBox = {top: 0, left: 0, right: 0, bottom: 0};
}
setOptions(options) {
this.options = options;
}
_setMargins(labelModule) {
this.margin = {};
if (this.options.margin) {
if (typeof this.options.margin == 'object') {
this.margin.top = this.options.margin.top;
this.margin.right = this.options.margin.right;
this.margin.bottom = this.options.margin.bottom;
this.margin.left = this.options.margin.left;
} else {
this.margin.top = this.options.margin;
this.margin.right = this.options.margin;
this.margin.bottom = this.options.margin;
this.margin.left = this.options.margin;
}
}
labelModule.adjustSizes(this.margin)
}
_distanceToBorder(ctx,angle) {
var borderWidth = this.options.borderWidth;
this.resize(ctx);
return Math.min(
Math.abs(this.width / 2 / Math.cos(angle)),
Math.abs(this.height / 2 / Math.sin(angle))) + borderWidth;
}
enableShadow(ctx) {
if (this.options.shadow.enabled === true) {
ctx.shadowColor = this.options.shadow.color;
ctx.shadowBlur = this.options.shadow.size;
ctx.shadowOffsetX = this.options.shadow.x;
ctx.shadowOffsetY = this.options.shadow.y;
}
}
disableShadow(ctx) {
if (this.options.shadow.enabled === true) {
ctx.shadowColor = 'rgba(0,0,0,0)';
ctx.shadowBlur = 0;
ctx.shadowOffsetX = 0;
ctx.shadowOffsetY = 0;
}
}
enableBorderDashes(ctx) {
if (this.options.shapeProperties.borderDashes !== false) {
if (ctx.setLineDash !== undefined) {
let dashes = this.options.shapeProperties.borderDashes;
if (dashes === true) {
dashes = [5,15]
}
ctx.setLineDash(dashes);
}
else {
console.warn("setLineDash is not supported in this browser. The dashed borders cannot be used.");
this.options.shapeProperties.borderDashes = false;
}
}
}
disableBorderDashes(ctx) {
if (this.options.shapeProperties.borderDashes !== false) {
if (ctx.setLineDash !== undefined) {
ctx.setLineDash([0]);
}
else {
console.warn("setLineDash is not supported in this browser. The dashed borders cannot be used.");
this.options.shapeProperties.borderDashes = false;
}
}
}
}
export default NodeBase;