ios 用程序绘制饼图的demo(2)

来源：未知责任编辑：责任编辑发表时间:2015-03-01 01:33　点击:次

        CGContextAddArc(context, 160, 230, 150, startAngle, endAngle, 0);

        CGContextClosePath(context);
        CGContextDrawPath(context, kCGPathFill);



        //绘制侧面
        float starx = cos(startAngle) * 150 +160;
        float stary = sin(startAngle) * 150 + 230;

        float endx = cos(endAngle) * 150 + 160;
        float endy = sin(endAngle) * 150 + 230;

        //float starty1 = stary + spaceHeight;
        float endy1 = endy + spaceHeight;


        if(endAngle < K_PI)
        {
        }

        //只有弧度《 3.14 的才会画前面的厚度
        else if(startAngle < K_PI)
        {
            endAngle = K_PI;
            endx = 10;
            endy1 = 230+spaceHeight;
        }

        else
            break;


        //CGContextSetBlendMode(context, kCGBlendModeMultiply);


        //绘制厚度
        CGMutablePathRef path = CGPathCreateMutable();