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.boundingBox = {top: 0, left: 0, right: 0, bottom: 0}; } setOptions(options) { this.options = options; } _distanceToBorder(angle) { var borderWidth = 1; 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 = 'rgba(0,0,0,0.5)'; 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;