Piramides zoom level

[FridayJew]

How i can set custom number of layout for generated piramides? I want get more then lib can get by default. I know that not same algorithm need , for this need resize image. Found one or two people who wanted same 2 years ago. But nod found result.

This lib incredible faster and not use huge resources for make tiles. Another script they i use eat 4+ gb of ram and 1 core for several minutes. This make same for ten seconds and can make it on cheap shared hosting without reach resources limit.

[jcupitt]

Hi @FridayJew, can you explain the behaviour you need?

Show a sample input image, desired output, and the operations you have tried to use.

[FridayJew]

Hi @FridayJew, can you explain the behaviour you need?

Show a sample input image, desired output, and the operations you have tried to use.

I want get in last layout tiles them 1 pixel of big image was 4 or 16 pixel of tile image. For more zoom level and clear view.

[jcupitt]

Yes, it should do that -- in the default mode, it'll shrink to 1 pixel tiles.

john@kiwi:~/pics$ vipsheader k2.jpg
k2.jpg: 1450x2048 uchar, 3 bands, srgb, jpegload
john@kiwi:~/pics$ vips dzsave k2.jpg x
john@kiwi:~/pics$ vipsheader x_files/0/0_0.jpeg 
x_files/0/0_0.jpeg: 1x1 uchar, 3 bands, srgb, jpegload

You need to explain what behaviour you need and what commands you've tried to use.

[FridayJew]

i use this functions:

$im = vips_image_new_from_file('./big_image.png')["out"]; //, ['access' => 'sequential'];
vips_call('dzsave', $im, './folder', ["overlap" => 0, "tile-size" => 256, "depth" => "onetile", "layout" => "google", "suffix" => ".png"]);

And get in last layout tiles with 1px big image = 1px tile image. I want make more than last levels. Tiles on them will be have cut and resized image. Like last layer tile height x2 and cut them on more 4 tiles.

I also found if use in this function parameter "skip_blanks" => 0 this don't work.

[jcupitt]

Try "depth" => "onepixel".

[jcupitt]

skip_blanks should work. You'll need to post an example of it failing.

[FridayJew]

Try "depth" => "onepixel".

This is make more levels for another way. I want more to + zoom. https://imgur.com/a/JN2oodX

skip_blanks should work. You'll need to post an example of it failing.

I have -1 from function if use them. Maybe i use them wrong or library in php 7.4 too old ?

echo vips_call('dzsave', $im, './folder', ["overlap" => 0, "tile-size" => 256, "depth" => "onetile", "layout" => "google", "suffix" => ".png", "skip_blanks" => 0 ]); 

[FridayJew]

this version install on hosting:

Vips headers version | 8.5.6
Vips library version | 8.5.6
Vips ABI version | 49.5.7

[jcupitt]

Oh, you want more detailed levels?

You could enlarge the image before making the pyramid. Is this a vector source, like SVG, or are you trying to pyramid a bitmap?

[jcupitt]

Yes, skip_blanks is a more recent feature. libvips 8.5 is from 2016.

[FridayJew]

Oh, you want more detailed levels?

You could enlarge the image before making the pyramid.

Maybe i can make one layer for 2x image, calculate how much folders, rename for last and save this is in folder for other tiles. I want options for make it ease.