Re: [Dxfreader-info] entity reading process

[Allan D. <al...@br...>]

Also to answer your question about Header objects -- no I have not put  
anything in there yet to read data out of the Header section. Do you  
want to tackle that?

-Allan


On Feb 28, 2009, at 7:45 AM, Michael Caron wrote:

> Hi list!
>
> Just wanted to make sure that I'm going about loading entities  
> correctly. Seems that when I draw them into a DKDrawingLayer, I get  
> incorrect directions and line widths (not sure if line widths are  
> part of the DXF line entity though).
>
> Process for reading in the DXF File:
> 	BBDXFModel* model = [[BBDXFModel alloc] init];
> 		[model loadDXFString:dxfFileContents];
> 		[model getDXFFileStructure];
> 		[model processEntities];
>
> Process for translating LINE entities into DK lines:
>
> 	BBDXFEntityLine* line = (BBDXFEntityLine*) entity;
> 	
> 	// Ignoring z coordinates for the moment
> 	NSPoint sp;
> 	sp.x = [[line startPoint] x];
> 	sp.y = [[line startPoint] y];
> 	NSPoint ep;
> 	ep.x = [[line endPoint] x];
> 	ep.y = [[line endPoint] y];
> 	
> 	DKDrawablePath* dkline =
> 		[[DKDrawablePath alloc] initWithStartingCoordinate:sp
>                                                   endingCoordinate:ep
>                                                               grid: 
> [self gridLayer]];
> 	return [dkline autorelease];
>
> Like I said, it seems that when I render this way, I'm getting weird  
> directions, though the lines seem to be spatially correct, that is,  
> they are in the right places relative to each other, just sort of  
> rotated or something differently. It might be due to an error in  
> scaling it to microns, however. I haven't looked too far into it.
>
> I also didn't see anything yet for getting the array of Header  
> objects. Am I missing something? I will add it if it's not there. It  
> was late... maybe I just totally overlooked it. Important to get  
> measurement data from the Header for SonoDraw.
>
> Cheers.
>
> Michael
> ------------------------------------------------
> mic...@gm...
> http://techrad.wordpress.com
> http://mrcaron.wordpress.com
>
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