//自定义绘制节点的方法
export const paintNodeFunction = function (ctx, onlyShape) {
  //默认绘制数据类型图片
  if (this.properties.typeIcon) {
    if (this.selected || this.showSelected) {
      this.drawShape(ctx, onlyShape)
    }

    if (this.alpha < 1) {
      ctx.save()
      ctx.globalAlpha = this.alpha
      ctx.drawImage(
        this.properties.typeIcon,
        -this.width / 2,
        -this.height / 2,
        this.width,
        this.height
      )
      ctx.restore()
    } else {
      ctx.drawImage(
        this.properties.typeIcon,
        -this.width / 2,
        -this.height / 2,
        this.width,
        this.height
      )
    }
  } else {
    this.drawShape(ctx, onlyShape)
  }

  //按节点类型绘制节点边框
  if (this.properties.type != "normal") {
    ctx.beginPath()
    ctx.arc(0, 0, this.radius + 6, 0, Math.PI * 2)
    ctx.lineWidth = 8
    ctx.strokeStyle = `rgba(${this.fillColor},${this.alpha * 0.4})`
    ctx.stroke()
  } else {
    ctx.beginPath()
    ctx.arc(0, 0, this.radius + 8, 0, Math.PI * 2)
    ctx.lineWidth = 12
    ctx.setLineDash([4, 4])
    ctx.strokeStyle = `rgba(${this.fillColor},${this.alpha * 0.6})`
    ctx.stroke()
  }

  this.paintText(ctx) //调用内部方法绘制文字
}

//自定义连线的方法
export const paintLineFunction = function (ctx, needHideText) {
  this.drawOriginalLine(ctx, needHideText) //内置默认的绘制方法

  //指定路径，用于鼠标检测选中
  this.path = [
    { x: this.source.cx, y: this.source.cy },
    { x: this.target.cx, y: this.target.cy }
  ]

  // //绘制路径
  ctx.beginPath()
  ctx.moveTo(this.source.cx, this.source.cy)
  ctx.lineTo(this.target.cx, this.target.cy)
  this.setLineStyle(ctx)
  ctx.stroke()

  // //绘制连线上文字（内部方法）
  this.paintTextOnLineWithAngle(ctx, this.source, this.target)
}