Images 2 pixels wide can not be resized

[AlexDenton]

Prerequisites

• I have written a descriptive issue title
• I have verified that I am running the latest version of ImageSharp
• I have verified if the problem exist in both DEBUG and RELEASE mode
• I have searched open and closed issues to ensure it has not already been reported

Description

When trying to resize an image that's 2px wide or less a ArgumentOutOfRangeException is thrown with the message: Parameter "width" (System.Int32) must be greater than 0, was 0.

This happens at 1 pixels and 2 pixels, but not 3 pixels. Practically speaking this probably won't matter in most scenarios but I thought I'd let you guys know.

Steps to Reproduce

This code snippet will repro:

var memoryStream = new MemoryStream(File.ReadAllBytes("player-min-px.jpg"));
using (var image = Image.Load(memoryStream))
{
    var size = new Size(50, 50);
    image.Mutate(x => x
        .Resize(
            new ResizeOptions
            {
                Size = size,
                Mode = ResizeMode.Max
            }));
}

System Configuration

• ImageSharp version: 1.0.0-rc0001
• Environment (Operating system, version and so on): Windows 10
• .NET Framework version: Dotnet Core 2.2

[JimBobSquarePants]

Hi @AlexDenton I'm sorry but I don't quite understand. Are you saying that your input image is 2px wide? What is the height?

[AlexDenton]

If the input image has a dimension of either width or height that is less than 2 pixels you will get this exception.

[JimBobSquarePants]

Perfect. Thanks for the detail, should be a simple enough fix.