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Relax code39 barcode minimum size requirements (#88)

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- Most libraries use the 7.5 mils for the minimum X value, not 10.
- Minimum recommended barcode height is 5 mm according to ISO/IEC 16388.
- Minimum quiet zone is 10 * X according to ISO/IEC 16388.
- Adjust minimum text sizes for reduced minimum barcode sizes

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
cus
2020-02-29 23:06:06 +01:00
committed by GitHub
parent ac93dc9b2c
commit 7b20797aea
1 changed files with 5 additions and 5 deletions
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glbarcode/BarcodeCode39.cpp
+5 -5
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@@ -85,14 +85,14 @@ namespace
const std::string frameSymbol = "NwNnWnWnN"; const std::string frameSymbol = "NwNnWnWnN";
/* Vectorization constants */ /* Vectorization constants */
const double MIN_X = ( 0.01 * PTS_PER_INCH ); const double MIN_X = ( 0.0075 * PTS_PER_INCH );
const double N = 2.5; const double N = 2.5;
const double MIN_I = MIN_X; const double MIN_I = MIN_X;
const double MIN_HEIGHT = ( 0.25 * PTS_PER_INCH ); const double MIN_HEIGHT = ( 0.19685 * PTS_PER_INCH );
const double MIN_QUIET = ( 0.10 * PTS_PER_INCH ); const double MIN_QUIET = ( 10 * MIN_X );
const double MIN_TEXT_AREA_HEIGHT = 14.0; const double MIN_TEXT_AREA_HEIGHT = 12.0;
const double MIN_TEXT_SIZE = 10.0; const double MIN_TEXT_SIZE = 8.0;
} }