Hi,
Am quite new to of, am trying to compile the ofxBox2d addon in VSexpress2008 - pretty sure everything is included correctly but the compiler always returns:
“ofxbox2dpolygon.h(124) : error C2057: expected constant expression”
The line of code here is:
b2Vec2 vertexArray[count];
so I think the issue has something to do with it not knowing at this stage how large count is - has anyone else experienced this or has a fix?
Thanks,
Adam
oh yes, on VC++ you can’t allocate an array like that. curious that other compilers are fine with it.
either use a fixed amount:
#define MAX_B2D_VERTICES 1000
b2Vec2 vertexArray[MAX_B2D_VERTICES];
then use MAX_B2D_VERTICES in your code to check if you are going over, etc.
second, you can do:
b2Vec2 * vertexArray;
in .h, in .cpp :
vertexArray = new b2Vec2[count]
when count is known…
does that help?
take care!
zach
Great thanks!
Hey Zach, I found this old thread since I had the same problem now that I moved to VC2010.
I used the first part of the method you mention (changing the value of count to something like 1000) but I’m not sure what to do with the second part:
then use MAX_B2D_VERTICES in your code to check if you are going over, etc.
Wouldn’t giving a fixed value actually break something?
And what needs to be checked afterwards? 
If there is a newer thread about this problem, I’ll try and find it. =D