Re: [Plplot-devel] Example 28 testing of the new plptex3 and plmtex3 API

[Hazen B. <hba...@ma...>]

On Sep 19, 2007, at 1:25 AM, Alan W. Irwin wrote:

> On 2007-09-19 00:04-0400 Hazen Babcock wrote:
>
>> Er, not a bug, a feature... I did this deliberately because I did  
>> not think
>> it made sense to be able to shear the text so that it was drawn  
>> "below" the
>> baseline. Also, in the documentation we say that the text will be  
>> drawn
>> parallel to the shear line, but don't mention anything about  
>> directionality.
>> It isn't hard to change though if you think this approach is  
>> incorrect.
>
> Yes, please.

Hopefully I've fixed this in v7876.

>> I'm not sure I understand. If the text is drawn in a plane then  
>> wouldn't you
>> expect it's size to depend on the angle at which you viewed the  
>> plane?
>
> My point is the inferred 3D size of characters should stay the same
> regardless of viewing angle. According to that criterion, the end  
> of the
> "revolution" pattern should form a circle in the Z=0 plane, but  
> inspection
> of the screenshots shows it doesn't. For example, in the second  
> screen shot
> (Hershey fonts) compare the omega = -PI/4 result with the omega = PI/4
> result.  The first one reaches half way to the corner while the  
> second one
> reaches all the way to the corner. Instead, they should both reach a
> consistent fraction of the way to the corner.  The first screen  
> shot has
> exactly the same issue, but the fonts are systematically smaller so  
> the
> -PI/4 result reaches 1/3 of the way to the corner while the PI/4  
> result
> reaches 2/3 of the way to the corner.

Ok, I see what you mean now. Since the characters are the same size  
the only way I can see to fix this is to change the spacing.

-Hazen