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Can't get layer[name].imagewidth working

robertl

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  • »robertl« ist der Autor dieses Themas

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1

Dienstag, 4. Juli 2017, 01:24

Can't get layer[name].imagewidth working

Hi!
I'm creating an image layer with:

Quellcode

 
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		addlayer(map);
		set(layer[map].align,"leftbottom");
		set(layer[map].x,"10");
		set(layer[map].y,"10");
		set(layer[map].keep,"false");
		set(layer[map].scalechildren,"true");
		set(layer[map].alpha,"0.5");
		set(layer[map].scale,"0.15");
		set(layer[map].startscale,"0.15");
		set(layer[map].destscale,"1");
                set(layer[map].url,get(mapurl));

The layer is created and works correctly, but I can't get the layer[name].imagewidth working, I always get 0.


Any ideas?

Alexey Tkachenko

Profi

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2

Dienstag, 4. Juli 2017, 08:36

Hi)

Try to add this line and see what 'trace' returns:

Quellcode

 
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set(layer[map].onloaded, showlog();trace(layer[map].imagewidth));
Regards,

Alexey

robertl

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  • »robertl« ist der Autor dieses Themas

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Wohnort: Croatia

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3

Dienstag, 4. Juli 2017, 11:54

Zitat von »Alexey Tkachenko«

set(layer[map].onloaded, showlog();trace(layer[map].imagewidth));


Thanks!
I completely missed the .onloaded method. I just put the code that deals with image dimensions to be run in an .onloaded and it's working fine!

I didn't expect to have to deal with such asynchronous behaviour with Krpano.

Alexey Tkachenko

Profi

Beiträge: 770

Wohnort: Russian Federation

Beruf: Interpreting, Building virtual tours

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4

Dienstag, 4. Juli 2017, 14:29

Why asynchroneous? It's all very logical: imagewidth (original width of the image file) is not known until the source image is fully loaded.
Regards,

Alexey

robertl

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  • »robertl« ist der Autor dieses Themas

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Wohnort: Croatia

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5

Dienstag, 4. Juli 2017, 14:39

Zitat von »Alexey Tkachenko«

Why asynchroneous? It's all very logical: imagewidth (original width of the image file) is not known until the source image is fully loaded.


In my original code, I called the .imagewidth a long after the image layer was created and set and it wasn't blocking. That's async behavior. Nothing wrong with it, but important to keep in mind.

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