[Plugin] Export 2d with Alpha

Gaieus

Well, you know where to report it (and who has all sorts of machines). I have no clue about the ins and outs of ruby. I could never make a proper bug report on plugins!

thomthom

Just to narrow it down to a simple test case - can you try this one-liner?

<span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_view</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">write_image</span><span class="syntaxkeyword">(</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">{</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">;</span><span class="syntaxdefault">filename</span><span class="syntaxkeyword">=></span><span class="syntaxstring">'C;\test.png'</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">;</span><span class="syntaxdefault">width</span><span class="syntaxkeyword">=></span><span class="syntaxdefault">640</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">;</span><span class="syntaxdefault">height</span><span class="syntaxkeyword">=></span><span class="syntaxdefault">480</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">;</span><span class="syntaxdefault">antialias</span><span class="syntaxkeyword">=></span><span class="syntaxdefault">false</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">;</span><span class="syntaxdefault">transparent</span><span class="syntaxkeyword">=></span><span class="syntaxdefault">true </span><span class="syntaxkeyword">}</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> </span>

Gaieus

Try what? Enter the ruby console? I get this:

TIG

If you set the background color to be 0,0,0 [pure-black] then the image will export with a transparent background in place of the 'pure-black', when you open it in Gimp or a web-browser etc you will see there is no background...

thomthom

@tig said:

If you set the background color to be 0,0,0 [pure-black]

Should not need to do this - I export with the default SketchUp Sky - still I get transparency.

TIG

@thomthom said:

@tig said:

If you set the background color to be 0,0,0 [pure-black]

Should not need to do this - I export with the default SketchUp Sky - still I get transparency.

That's not entirely correct... iIF you have a Sky and/or Ground ticked in your Style you will not get a transparent background to the png for the areas that these parts 'cover'.
BUT if you have the Sky AND Ground un-ticked in your Style then I agree - the color of the Background itself is irrelevant because whatever it is when the have the png export transparency set 'on' that background is made 'transparent' - no matter what color it is - white, black, magenta or anything else!

thomthom

I get Transparency with Sky on. But not with Ground.

...Gaieus... do you have the Ground on?

thomthom

Correction: Sky do appear when exporting. I just always tried with a view looking down so no sky was visible.

TIG

@thomthom said:

I get Transparency with Sky on. But not with Ground.

...Gaieus... do you have the Ground on?

I find that both sky and ground obscure my png's background transparency ?
I need to have sky and ground both off to have a fully transparent background in the png, BUT even then shadows on the ground-pane will show up floating is space so you need to have that option off too...

Frederik

Don't know why I haven't seen this gem before today...

Awesome, Thomas...!
Thank you SO much...!!

Gaieus

Hi Thom and TIG; you are right, when I turn ground and sky off, I can export with transparency.

And now I am banging my head to the wall (where is that smiley?

)

This is exactly the way you need to set your style to be able to export your png with transparency!

thomthom

Yea - we need that smiley.

This has been one for my Duh! list as well.

Gaieus

Thanks anyway (and again) for the plug however. I do not know if there is a solution in ruby but if not, I guess you have already updated the info on the first page.

Maybe a solution to temporarily disable ground and sky?

thomthom

@gaieus said:

Maybe a solution to temporarily disable ground and sky?

Maybe the user want either one on/off...

Rich O Brien

Thom,

This is exporting for me? Ground/Sky off, BG is White and adding .png to file name when exporting but no joy! I know i've missed something here but re-reading the thread i can't pin it down?