//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);

}