Package com.drew.lang

Examples of com.drew.lang.Rational

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

    @Nullable
    protected String getSimpleRational(final int tagType)
    {
        Rational value = _directory.getRational(tagType);
        if (value == null)
            return null;
        return value.toSimpleString(true);
    }
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    }

    @Nullable
    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());
    }
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    }

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

    @Nullable
    public String getExposureBiasDescription()
    {
        Rational value = _directory.getRational(TAG_EXPOSURE_BIAS);
        if (value == null)
            return null;
        return value.toSimpleString(true) + " EV";
    }
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    }

    @Nullable
    public String getFocalPlaneXResolutionDescription()
    {
        Rational rational = _directory.getRational(TAG_FOCAL_PLANE_X_RESOLUTION);
        if (rational == null)
            return null;
        final String unit = getFocalPlaneResolutionUnitDescription();
        return rational.getReciprocal().toSimpleString(_allowDecimalRepresentationOfRationals)
            + (unit == null ? "" : " " + unit.toLowerCase());
    }
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    }

    @Nullable
    public String getFocalPlaneYResolutionDescription()
    {
        Rational rational = _directory.getRational(TAG_FOCAL_PLANE_Y_RESOLUTION);
        if (rational == null)
            return null;
        final String unit = getFocalPlaneResolutionUnitDescription();
        return rational.getReciprocal().toSimpleString(_allowDecimalRepresentationOfRationals)
            + (unit == null ? "" : " " + unit.toLowerCase());
    }
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    }

    @Nullable
    public String getFocalLengthDescription()
    {
        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";
    }
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    }

    @Nullable
    public String getSubjectDistanceDescription()
    {
        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";
    }
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    }

    @Nullable
    public String getCompressedAverageBitsPerPixelDescription()
    {
        Rational value = _directory.getRational(TAG_COMPRESSED_AVERAGE_BITS_PER_PIXEL);
        if (value == null)
            return null;
        String ratio = value.toSimpleString(_allowDecimalRepresentationOfRationals);
        return value.isInteger() && value.intValue() == 1
            ? ratio + " bit/pixel"
            : ratio + " bits/pixel";
    }
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Related Classes of com.drew.lang.Rational

  • com.drew.imaging.tiff.TiffReader
  • com.drew.lang.test.RationalTest
  • com.drew.metadata.Directory
  • com.drew.metadata.DirectoryTest
  • com.drew.metadata.exif.ExifDescriptor
  • com.drew.metadata.exif.ExifIFD0Descriptor
  • com.drew.metadata.exif.ExifIFD0DescriptorTest
  • com.drew.metadata.exif.ExifReader
  • com.drew.metadata.exif.ExifReaderTest
  • com.drew.metadata.exif.ExifSubIFDDescriptor
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