Save Screeshot/Snapshot to Jpg file

This topic has 39 replies, 2 voices, and was last updated 5 years, 1 month ago by Yuri Kovelenov.

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2019-09-11 at 3:46 pm #18599

Manuel
Customer

Hi

I want to add a button to save the current view of a object to a jpg file

Is it possible?

Thanks

2019-09-12 at 7:27 am #18604
Yuri Kovelenov
Staff
Hi,

You can use the take screenshot puzzle for that (also need to enable screenshots with configure app puzzle). It only generates the image though. To be able to download it, you can use the following JavaScript snippet
```
    app.ExternalInterface.downloadScreenshot = function(image) {
        var link = document.createElement('a');
        link.setAttribute('download', 'myImage.png');
        link.setAttribute('href', image);
        link.click();
    }
```
and call it from Puzzles as described here.

Attached an example project.

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2019-09-12 at 7:35 am #18609
Yuri Kovelenov
Staff
Update:

make it
```
    app.ExternalInterface.downloadScreenshot = function(image) {
        var link = document.createElement('a');
        document.body.appendChild(link);
        link.setAttribute('download', 'myImage.png');
        link.setAttribute('href', image);
        link.click();
    }
```
to work on Firefox.

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2019-09-12 at 9:31 am #18614

Manuel
Customer

Thanks a lot

The only problem now, is that i get a black image :-S

Any idea that can be?

Thanks

2019-09-12 at 9:38 am #18615

Yuri Kovelenov
Staff

Yuri Kovelenov wrote:

also need to enable screenshots with configure app puzzle)

:)

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2019-09-12 at 9:39 am #18616

Manuel
Customer

Fixed!

Sorry, i hadn’t checked the option in initialization panel ^^

Thanks

2019-09-12 at 9:44 am #18618

Manuel
Customer

Now i see that, another question…

Is there any possibility to change the background automatically or make it transparent when you save the pic?

Thks again ^^

2019-09-12 at 9:46 am #18620

Yuri Kovelenov
Staff

Try the transparent background option in the same puzzle: https://www.soft8soft.com/docs/manual/en/puzzles/Initialization.html#configure_application

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2019-09-12 at 10:12 am #18623

Manuel
Customer

Yuri Kovelenov wrote:

Try the transparent background option in the same puzzle: https://www.soft8soft.com/docs/manual/en/puzzles/Initialization.html#configure_application

As i have a sphere background, i solve it like this (look attached file)

Is there any cleaner form to do it?

Because here, i depend of cpu speed, i suppose isn’t it?

2019-09-12 at 10:18 am #18625

Yuri Kovelenov
Staff

Yep, you can use 0 second time to make it lapse only 1 rendering frame.

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2019-09-12 at 10:30 am #18628

Manuel
Customer

Yuri Kovelenov wrote:

Yep, you can use 0 second time to make it lapse only 1 rendering frame.

I tested it, but i doesn’t work :-S

2019-09-12 at 10:56 am #18634

Yuri Kovelenov
Staff

What does it produce? non-transparent background?

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2019-09-12 at 11:42 am #18636

Manuel
Customer

Yuri Kovelenov wrote:

What does it produce? non-transparent background?

Correct!

It seems that with “0” value, there’s no time to grab the transparent backgroud.

2019-09-12 at 12:56 pm #18637

Yuri Kovelenov
Staff

you can try another approach – using the every frame puzzle with a counter to wait for 1 or 2 rendering frames.

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2019-09-13 at 2:40 pm #18698

Manuel
Customer

Yuri Kovelenov wrote:

you can try another approach – using the every frame puzzle with a counter to wait for 1 or 2 rendering frames.

I don’t know how to use it, as i can’t puzzle it into my “click” function :-S
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