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From Tilman Hausherr <THaush...@t-online.de>
Subject Re: Help on MediaBox and BoundingBox
Date Tue, 13 Sep 2016 17:14:21 GMT
Am 13.09.2016 um 19:10 schrieb Jorge Reyes:
> Thank you for your answer, Herr Hausherr.
>
> I was asking because there is a BoundingBox class and the 
> documentation states: "T*his is an implementation of a bounding box. 
> This was originally written for the AMF parser.*" Additionally, the 
> PDPage class has a getBBox() method, so I was curious to the 
> differences between MediaBox, BoundingBox, CropBox and BleedBox.  Is 
> this something I can find in the PDF specification document?

Yes, just google for PDF 32000 specification. But like I said, the page 
BBox does not really exist, the method returns the cropBox. I suspect 
this was done because the base class required it.

You will usually only need MediaBox and CropBox in your work.

Tilman

>
> Thanks again for your help.
>
> Jorge
>
>
> On 9/13/2016 9:56 AM, Tilman Hausherr wrote:
>> Am 13.09.2016 um 18:50 schrieb Jorge Reyes:
>>> Hello:
>>> First time user here.  What is the difference between MediaBox and 
>>> BoundingBox? And when should I use either? 
>>
>> I hadn't heard of the page BBox. This returns the cropBox.
>>
>> MediaBox:
>> A rectangle expressed in default user space units, that shall define 
>> the boundaries of the physical medium on which the page shall be 
>> displayed or printed
>>
>> CropBox:
>> A rectangle, expressed in default user space units, that shall define 
>> the visible region of default user space. When the page is displayed 
>> or printed, its contents shall be clipped (cropped) to this rectangle 
>> and then shall be imposed on the output medium in some 
>> implementation-defined manner. Default value: the value of MediaBox.
>>
>> I can't tell what you should use. What do you want to do? For create 
>> a PDF, just set the mediabox to the A4 and don't bother about the rest.
>>
>> Tilman
>>
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>
>


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