绘制多个路径时颜色重叠 [英] color overlapping when drawing multiple path

问题描述

ArrayList

ArrayList<Pair<Path, Float>> foregroundPaths = new ArrayList<Pair<Path, Float>>();

Paint初始化

    mPaint = new Paint();
    mPaint.setAntiAlias(false);
    mPaint.setDither(true);
    mPaint.setColor(0x0FFF0000);
    mPaint.setStyle(Paint.Style.STROKE);
    mPaint.setStrokeJoin(Paint.Join.BEVEL);
    mPaint.setStrokeCap(Paint.Cap.ROUND);
    mPaint.setStrokeWidth(Math.abs(ImageViewTouch.brushSize
                    / getScale()));

    mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_ATOP));

    mPaint.setAlpha(0x80);

OnDraw

  canvas.save();


    displayRectF = new RectF();


    canvas.concat(getDisplayMatrix());

    rect = canvas.getClipBounds();
    displayRectF.set(rect);

    for (Pair<Path, Float> p : foregroundPaths) {
        mPaint.setStrokeWidth(p.second);
        canvas.drawPath(p.first, mPaint);
    }



    canvas.restore();

上面的代码能够使用手指在画布上绘制。但问题是当多个路径相互交叉时它的重叠。我已附加我的应用程序快照的链接。
重叠在绿色矩形内。我设置Xfermode绘画，但不工作，我期望。

Above codes are capable of drawing on canvas using finger. But the problem is when multiple path crossing each other its overlap. I have attached a link of my app snapshot. Overlapping is inside the green rectangle. I set Xfermode to paint but not working as i expect.

请帮助我并建议我，我该如何解决这个问题。
任何建议将不胜感激。
感谢

Please help me and suggest me, what should i do to remove this problem. any suggestion will be appreciated. Thanks

推荐答案

mPaint.setXfermode(new AvoidXfermode(Color.RED, 90, Mode.AVOID)); 

它适用于我。

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