private final Paint pointPaintBase = new Paint() {{
        setAntiAlias(true);
        setStyle(Paint.Style.FILL);
    }};

    protected Paint getPointPaint(Line line, PointValue pointValue) {
        final Paint paint = new Paint(pointPaintBase);
        paint.setColor(line.getColor());
        return paint;
    }

    private void drawPoint(Canvas canvas, Line line, PointValue pointValue, float rawX, float rawY,
                           float pointRadius) {
        if (ValueShape.SQUARE.equals(line.getShape())) {
            canvas.drawRect(rawX - pointRadius, rawY - pointRadius, rawX + pointRadius, rawY + pointRadius,
                    getPointPaint(line, pointValue));
        } else if (ValueShape.CIRCLE.equals(line.getShape())) {
            canvas.drawCircle(rawX, rawY, pointRadius, getPointPaint(line, pointValue));
        } else if (ValueShape.DIAMOND.equals(line.getShape())) {
            canvas.save();
            canvas.rotate(45, rawX, rawY);
            canvas.drawRect(rawX - pointRadius, rawY - pointRadius, rawX + pointRadius, rawY + pointRadius,
                    getPointPaint(line, pointValue));
            canvas.restore();
        } else {
            throw new IllegalArgumentException("Invalid point shape: " + line.getShape());
        }
    }