How do I get the barcode images to scale properly?

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I am using the following Barcode Image Generation Library code to generate barcodes.

Barcode.Encode(BarcodeLib.TYPE.BOOKLAND, Text, Width, Height)

The generated images are all the same length, which distorts the barcode.

https://i.imgur.com/gHDNjzZ.png[^]

How do I get the barcodes to automatically scale properly?

What I have tried:

I have created an SSRS report that uses the BarcodeLib.dll assembly. It is working great except for the scaling of the barcodes. I know I am doing something stupid, but I have not been able to figure out what.

Posted 20-Oct-18 6:56am

Member 8525852

Updated 20-Oct-18 22:09pm

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Richard MacCutchan 21-Oct-18 4:05am

You should check the documentation that came with the library. Also see below.

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Richard MacCutchan · Answer 1 · 2018-10-20T22:10:00

When an image gets distorted it is often because one dimension is adjusted without the other. The key to keeping the correct aspect ratio while resizing an image is the algorithm used to calculate the ratio, viz.

NewHeight = GivenWidth * (OriginalHeight / OriginalWidth)

 or

NewWidth = GivenHeight * (OriginalWidth / OriginalHeight)

This calculation assumes that the “Given...” is the dimension the image should be resized to. Once we know this, we can multiply it by the original image’s aspect, and that will give us the other side's value we need. So, assuming the original image has a width of 1000 and a height of 1600 and we want it to be resized to a width of 500:

First find the aspect: (1600 / 1000) = aspect of 1.6
Now multiply the aspect by the desired new width: 1.6 * 500
The result of that multiplication is 800, which is what our height should be
In other words:

800 = 500 * (1600 / 1000)

So the resulting image would have a height of 800 and a width of 500.