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From Greg Hanowski <g...@enventive.com>
Subject Re: Can pdfbox find a dimension in a pdf drawing, zoom up on it, highlight it, and create an image file?
Date Wed, 20 Mar 2019 18:31:47 GMT
Hi Tilman,

Oh, ok, I understand.  I've uploaded a new pdf to here:

http://www.tekknow.net/MoneyMachine/386-5001.pdf

I created this pdf from the Creo 5.0 CAD system.  It is not proprietary.

Thank you for checking whether the dimensions exist in a "dictionary" 
and can be accessed.

Greg

On 3/20/2019 11:08 AM, Tilman Hausherr wrote:
> Hi,
>
> The problem is that I need an actual PDF to see whether these 
> "dimensions" exist as a dictionary somewhere (there are so many 
> "exotic" PDF features). If this is just a vector graphic then we can't 
> fetch it without OCR or pattern recognition.
>
> I thought it had to do with viewports but now I think that isn't. A 
> file with it is in this question:
> https://stackoverflow.com/questions/47772334/how-do-i-extract-viewport-from-a-pdf-and-modify-an-annotations-bounding-rectang

>
>
> Tilman
>
> Am 20.03.2019 um 15:39 schrieb Greg Hanowski:
>> That's just an example to help people understand what a dimension is 
>> and what I'm trying to accomplish.  The real pdf drawings are 
>> proprietary so can't show them.  But they will not be screen shots.  
>> They will be PDF drawings generated by the CAD (Computer Aided 
>> Design) systems.
>>
>> Greg
>>
>> On 3/20/2019 1:45 AM, Tilman Hausherr wrote:
>>> That's just an image in a PDF. No way to find that dimension 
>>> programmatically (one could use OCR, with all the difficulties)
>>>
>>> Tilman
>>>
>>> Am 19.03.2019 um 22:18 schrieb Greg Hanowski:
>>>> Ok, I've uploaded it to here:
>>>>
>>>> http://www.tekknow.net/MoneyMachine/drawing.pdf
>>>>
>>>> I want to be able to programmatically zoom up on the "4 +/- 0.2" 
>>>> dimension, for example, highlight it in some way (Put a transparent 
>>>> yellow over it, or change the color of it), then create an image 
>>>> file of the zoomed up view.
>>>>
>>>> On 3/19/2019 2:35 PM, Tilman Hausherr wrote:
>>>>> Hi,
>>>>>
>>>>> nothing attached, you need to upload it somewhere. It would be 
>>>>> useful to have the PDF too. If you can't share it, then please 
>>>>> create a dummy. Btw I don't have Adobe Professional, only the reader.
>>>>>
>>>>> Tilman
>>>>>
>>>>> Am 19.03.2019 um 21:29 schrieb Greg Hanowski:
>>>>>> I've pasted a screenshot of an engineering drawing.  Dimensions

>>>>>> are the numbers that define distances between two points.  I want

>>>>>> to be able to programmatically zoom up on the 12.000 dimension, 
>>>>>> for example, highlight it in some way (Put a transparent yellow 
>>>>>> over it, or change the color of it), then an image file of the 
>>>>>> zoomed up view.
>>>>>>
>>>>>> **
>>>>>>
>>>>>> On 3/19/2019 1:33 AM, Tilman Hausherr wrote:
>>>>>>> Am 18.03.2019 um 22:40 schrieb Greg Hanowski:
>>>>>>>> We get pdf engineering drawings from suppliers.  We need
to 
>>>>>>>> programmatically zoom up on a specified dimension, highlight

>>>>>>>> it, and create an image file of the zoomed up view.  How
to 
>>>>>>>> specify the dimension is unknown. Some dimensions might have

>>>>>>>> the same text so not sure how to differentiate. Suggestions

>>>>>>>> welcome.  Can pdfbox do this? 
>>>>>>>
>>>>>>>
>>>>>>> With "dimension" do you mean a rectangle coordinate or this 
>>>>>>> viewport thing? (An exotic feature of PDF)
>>>>>>>
>>>>>>> "Zoom up" - do you want to make it bigger? Or do you just mean

>>>>>>> to cut it out?
>>>>>>>
>>>>>>> Highlight = ? Put a yellow over it?
>>>>>>>
>>>>>>> It is possible to crop on a specific area by modifying the 
>>>>>>> cropbox of a page, then only the cropped area will be seen. It's

>>>>>>> also possible to highlight by filling a rectangle and blending

>>>>>>> this on top.
>>>>>>>
>>>>>>> Tilman
>>>>>>>
>>>>>>>
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>>>>>>
>>>>>
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