Examples of com.drew.lang.Rational.doubleValue()

com.drew.lang.Rational.doubleValue()
Returns the value of the specified number as a double. This may involve rounding. @return the numeric value represented by this object after conversionto type double.

    public String getFNumberDescription()
    {
        final Rational value = _directory.getRational(XmpDirectory.TAG_F_NUMBER);
        if (value==null)
            return null;
        return "F" + SimpleDecimalFormatter.format(value.doubleValue());
    }


    /** This code is from ExifSubIFDDescriptor.java */
    @Nullable
    public String getFocalLengthDescription()

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    {
        final Rational value = _directory.getRational(XmpDirectory.TAG_FOCAL_LENGTH);
        if (value==null)
            return null;
        java.text.DecimalFormat formatter = new DecimalFormat("0.0##");
        return formatter.format(value.doubleValue()) + " mm";
    }


    /** This code is from ExifSubIFDDescriptor.java */
    @Nullable
    public String getApertureValueDescription()

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    public String getFNumberDescription()
    {
        final Rational value = _directory.getRational(XmpDirectory.TAG_F_NUMBER);
        if (value==null)
            return null;
        return "F" + SimpleDecimalFormatter.format(value.doubleValue());
    }


    /** This code is from ExifSubIFDDescriptor.java */
    @Nullable
    public String getFocalLengthDescription()

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    {
        final Rational value = _directory.getRational(XmpDirectory.TAG_FOCAL_LENGTH);
        if (value==null)
            return null;
        java.text.DecimalFormat formatter = new DecimalFormat("0.0##");
        return formatter.format(value.doubleValue()) + " mm";
    }


    /** This code is from ExifSubIFDDescriptor.java */
    @Nullable
    public String getApertureValueDescription()

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    protected String getDecimalRational(final int tagType, final int decimalPlaces)
    {
        Rational value = _directory.getRational(tagType);
        if (value == null)
            return null;
        return String.format("%." + decimalPlaces + "f", value.doubleValue());
    }


    @Nullable
    protected String getFormattedInt(final int tagType, @NotNull final String format)
    {

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        Rational value = _directory.getRational(TAG_DIGITAL_ZOOM_RATIO);
        return value == null
            ? null
            : value.getNumerator() == 0
            ? "Digital zoom not used."
            : SimpleDecimalFormatter.format(value.doubleValue());
    }


    @Nullable
    public String getWhiteBalanceModeDescription()
    {

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    {
        Rational value = _directory.getRational(TAG_FOCAL_LENGTH);
        if (value == null)
            return null;
        java.text.DecimalFormat formatter = new DecimalFormat("0.0##");
        return formatter.format(value.doubleValue()) + " mm";
    }


    @Nullable
    public String getFlashDescription()
    {

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    {
        Rational value = _directory.getRational(TAG_SUBJECT_DISTANCE);
        if (value == null)
            return null;
        java.text.DecimalFormat formatter = new DecimalFormat("0.0##");
        return formatter.format(value.doubleValue()) + " metres";
    }


    @Nullable
    public String getCompressedAverageBitsPerPixelDescription()
    {

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    public String getFNumberDescription()
    {
        Rational value = _directory.getRational(TAG_FNUMBER);
        if (value == null)
            return null;
        return "F" + SimpleDecimalFormatter.format(value.doubleValue());
    }


    @Nullable
    public String getSensingMethodDescription()
    {

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    public String getGpsDirectionDescription(int tagType)
    {
        Rational angle = _directory.getRational(tagType);
        // provide a decimal version of rational numbers in the description, to avoid strings like "35334/199 degrees"
        String value = angle != null
            ? new DecimalFormat("0.##").format(angle.doubleValue())
            : _directory.getString(tagType);
        return value == null || value.trim().length() == 0 ? null : value.trim() + " degrees";
    }


    @Nullable

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