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Todd Kneib  
#1 Posted : Thursday, September 1, 2022 9:27:14 AM(UTC)
Todd Kneib

Rank: Advanced Member

Groups: Member
Joined: 5/10/2006(UTC)
Posts: 32

Thanks: 6 times
I'm trying to use the pipeline to tile an image multiple times, after resizing it to the tile size. Using the code below, I get the error

Code:
 Aurigma.GraphicsMill.Codecs.PngReader is included into pipeline more than once. 

Code:
 void Main()
{
    int lengthInch = 96;
    int widthInch = 24;
    int dpi = 300;
        
    using (var reader = ImageReader.Create(@"\\Centrics\Development\MI_TestImages\TestSwatches\ColorTestChart_ARGB_300.png"))
    using (var generator = new ImageGenerator(widthInch * dpi, lengthInch * dpi, PixelFormat.Format24bppRgb, RgbColor.White))
    using (var writer = new PngWriter($@"C:\temp\Repeat{DateTime.Now.ToString("yyMMdd-hhmmss")}.png"))
    {
        generator.DpiX = dpi;
        generator.DpiY = dpi;
        var newImageWidth = widthInch * dpi;
        var newImageHeight = (int)(newImageWidth * (reader.Width / reader.Height));
        using (var resizer = new Resize(newImageWidth, newImageHeight, ResizeInterpolationMode.Anisotropic9))
        {
            var resized = (reader + resizer).Build();
            
            Aurigma.GraphicsMill.Pipeline results = new Pipeline();
            results += generator;

            List<Combiner> combiners = new List<Combiner>();
            for (int yOffset = 0; yOffset < (lengthInch * dpi); yOffset += newImageHeight)
            {
                var combiner = new Combiner(CombineMode.Alpha);
                combiner.TopImage = resized;
                combiner.X = 0;
                combiner.Y = yOffset;

                combiners.Add(combiner);
                results += combiner;
            }
            
            results += writer;
            results.Run();
            
            foreach(var part in combiners)
            {
                part.Dispose();
            }
        }
    }
}

How can I reuse the resized image and combine it with the background generated image providing an offset?

Eugene Kosmin  
#2 Posted : Thursday, September 1, 2022 6:38:47 PM(UTC)
Eugene Kosmin

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Joined: 9/19/2006(UTC)
Posts: 487

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Hello Todd,

Unfortunately, it is impossible.

You need to create a separate PngReader for each tile. I would consider using a tile as a Bitmap, if you don’t expect it to be too large. Because many readers, especially with resizers, will also give some memory footprint.

Best regards,

Eugene Kosmin

The Aurigma Development Team

Todd Kneib  
#3 Posted : Tuesday, September 6, 2022 8:40:33 AM(UTC)
Todd Kneib

Rank: Advanced Member

Groups: Member
Joined: 5/10/2006(UTC)
Posts: 32

Thanks: 6 times
I updated the code to create the tile Bitmap before, and add that one bitmap to all the combiners, and that returns a PipelineException

Aurigma.GraphicsMill.Bitmap is included into pipeline more than once.

So I changed it to load, resize, and save the bitmap to be tiled to a memory stream and then created separate bitmaps per combiner.

Using new Bitmaps for each blew up the memory to almost 5Gb

I switched it to ImageReader.Create(tileMS) for each combiner, and the memory didn't peak above ~836Mb (when viewed in task manager)

Code:
void Main()
{
	int lengthInch = 96;
	int widthInch = 24;
	int dpi = 300;
	int tileHeight;
	using (MemoryStream tileMS = new MemoryStream())
	{
		using (var source = new Aurigma.GraphicsMill.Bitmap(@"\\Centrics\Development\MI_TestImages\TestSwatches\ColorTestChart_ARGB_300.png"))
		{
			var newImageWidth = widthInch * dpi;
			var newImageHeight = (int)(newImageWidth * (source.Width / source.Height));
			tileHeight = newImageHeight;
			using (var resizer = new Resize(newImageWidth, newImageHeight, ResizeInterpolationMode.Anisotropic9))
			{
				using (var tileImage = resizer.Apply(source))
				{
					tileImage.Save(tileMS, new BmpSettings());
				}
			}
		}

		using (var generator = new ImageGenerator(widthInch * dpi, lengthInch * dpi, PixelFormat.Format24bppRgb, RgbColor.White))
		using (var writer = new PngWriter($@"C:\temp\Repeat{DateTime.Now.ToString("yyMMdd-hhmmss")}.png"))
		{
			generator.DpiX = dpi;
			generator.DpiY = dpi;

			Aurigma.GraphicsMill.Pipeline results = new Pipeline();
			results += generator;

			List<Combiner> combiners = new List<Combiner>();
			for (int yOffset = 0; yOffset < (lengthInch * dpi); yOffset += tileHeight)
			{
				var combiner = new Combiner(CombineMode.Alpha);
				combiner.TopImage = ImageReader.Create(tileMS); //new Bitmap(tileMS);
				combiner.X = 0;
				combiner.Y = yOffset;

				combiners.Add(combiner);
				results += combiner;
			}

			results += writer;
			results.Run();

			foreach (var part in combiners)
			{
				part.AutoDisposeTopImage = true;
				part.Dispose();
			}
		}
	}
}
Eugene Kosmin  
#4 Posted : Tuesday, September 6, 2022 4:10:17 PM(UTC)
Eugene Kosmin

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Joined: 9/19/2006(UTC)
Posts: 487

Was thanked: 30 time(s) in 30 post(s)
Todd, could you post here your source image, or its dimensions?
Best regards,

Eugene Kosmin

The Aurigma Development Team

Todd Kneib  
#5 Posted : Friday, September 9, 2022 6:53:03 AM(UTC)
Todd Kneib

Rank: Advanced Member

Groups: Member
Joined: 5/10/2006(UTC)
Posts: 32

Thanks: 6 times
Here is the file in question.

ColorTestChart_ARGB_300.png

Eugene Kosmin  
#6 Posted : Monday, September 12, 2022 12:56:49 AM(UTC)
Eugene Kosmin

Rank: Advanced Member

Groups: Member, Administration, Moderator
Joined: 9/19/2006(UTC)
Posts: 487

Was thanked: 30 time(s) in 30 post(s)
Probably, this way is the best you can do for your task.

You can also try to add more compression to the image stream using zip. In my case, it gives ~250 Mb in peaks.

Code:
tileImage.Save(tileMS, new TiffSettings() {Compression = CompressionType.Zip });
Best regards,

Eugene Kosmin

The Aurigma Development Team

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