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

问题描述

的ArrayList

 的ArrayList＆LT;对＆LT;路径，浮法＆GT;＆GT; foregroundPaths =新的ArrayList＆LT;对＆LT;路径，浮法＆GT;＆GT;（）;
 

油漆动初始化

  mPaint =新的油漆（）;
    mPaint.setAntiAlias​​（假）;
    mPaint.setDither（真）;
    mPaint.setColor（0x0FFF0000）;
    mPaint.setStyle（Paint.Style.STROKE）;
    mPaint.setStrokeJoin（Paint.Join.BEVEL）;
    mPaint.setStrokeCap​​（Paint.Cap.ROUND）;
    mPaint.setStrokeWidth（Math.abs（ImageViewTouch.brushSize
                    /的getScale（）））;    mPaint.setXfermode（新PorterDuffXfermode（PorterDuff.Mode.SRC_ATOP））;    mPaint.setAlpha（0x80的）;
 

的OnDraw

  canvas.save（）;
    displayRectF =新RectF（）;
    canvas.concat（getDisplayMatrix（））;    RECT = canvas.getClipBounds（）;
    displayRectF.set（RECT）;    对（对＆LT;路径，浮指p：foregroundPaths）{
        mPaint.setStrokeWidth（p.second）;
        canvas.drawPath（p.first，mPaint）;
    }    canvas.restore（）;
 

以上codeS能够使用手指在画布上绘制的。但问题是，当多个路径相互交叉的重叠。我重视我的应用程序快照的链接。
重叠是绿色矩形内。我设置Xfermode画画，但没有工作，我期望的那样。

请帮助我，建议我，我应该怎么做才能消除这种问题。
任何建议将AP preciated。
谢谢

解决方案

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

它为我工作。

ArrayList

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

Paint initilization

    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();

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.

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

解决方案

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

it works for me.

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