Recommendations for the best way to define areas
My instinct when drawing is to define an area with lines drawn exactly defining the area, each line starting at the same point as the last line ends. So I split my wall lines at the points where I want the area border to join the wall, and drawn border lines between points on the walls. This looks neater to me. But I realise that this is not required because you can just overlap the border lines across the walls to define the area, and any fill will be clipped by the walls anyway. So what I am wondering is are there any advantages to one method over the other? See the attached bitmap illustrating areas defined in the two different ways I just described. (Left side shows overlapped lines not joined at points. Right side shows neater area defined exactly by bounding lines.) Footleg
Sorry: Anyway you may use third method (define area only by border): Picture On 21.2.2012, at 14:20, Footleg wrote:
My instinct when drawing is to define an area with lines drawn exactly defining the area, each line starting at the same point as the last line ends. So I split my wall lines at the points where I want the area border to join the wall, and drawn border lines between points on the walls. This looks neater to me. But I realise that this is not required because you can just overlap the border lines across the walls to define the area, and any fill will be clipped by the walls anyway. So what I am wondering is are there any advantages to one method over the other? See the attached bitmap illustrating areas defined in the two different ways I just described. (Left side shows overlapped lines not joined at points. Right side shows neater area defined exactly by bounding lines.)
Footleg < AreaDefinedTwoWays.png>_______________________________________________ Therion mailing list Therion@speleo.sk http://mailman.speleo.sk/mailman/listinfo/therion
Yes, in that third alternative you do not need to include the walls in the area at all. They just clip the area fill drawn over the top of the passage. But which of these 3 methods is preferred? Or is there no real problem with any of them? I am asking because I am giving a training course next month and want to give the best advice. Footleg
Footleg In my experience only Martins method (border line completely independent of wall (or other) lines) results in a scrap that will be resilient to future edits. It is the only method I use now, after some bad experiences. Firstly an independent border stands out as an entity to any future author (although perhaps is a little messy). It is not hidden in the drawing. Secondly and most importantly, the creation of an area adds an id to any lines that make up its border. If in future a wall that also happens to be part of a border is split or redrawn, the id is removed (at least for one part of the line) and there is a very high chance that the area will no longer be drawn. I have alluded to this in http://therion.speleo.sk/wiki/doku.php?id=drawingchecklist#scrap_drawing Bruce _____ From: therion-bounces@speleo.sk [mailto:therion-bounces@speleo.sk] On Behalf Of Footleg Sent: Wednesday, 22 February 2012 3:56 a.m. To: List for Therion users Subject: Re: [Therion] Recommendations for the best way to define areas Yes, in that third alternative you do not need to include the walls in the area at all. They just clip the area fill drawn over the top of the passage. But which of these 3 methods is preferred? Or is there no real problem with any of them? I am asking because I am giving a training course next month and want to give the best advice. Footleg
Thanks Bruce, that makes a lot of sense. Footleg On 21 February 2012 19:43, Bruce <bruce@tomo.co.nz> wrote:
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Footleg****
In my experience only Martins method (border line completely independent of wall (or other) lines) results in a scrap that will be resilient to future edits. It is the only method I use now, after some bad experiences. ****
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Firstly an independent border stands out as an entity to any future author (although perhaps is a little messy). It is not hidden in the drawing.*** *
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Secondly and most importantly, the creation of an area adds an id to any lines that make up its border. If in future a wall that also happens to be part of a border is split or redrawn, the id is removed (at least for one part of the line) and there is a very high chance that the area will no longer be drawn. I have alluded to this in http://therion.speleo.sk/wiki/doku.php?id=drawingchecklist#scrap_drawing** **
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Bruce****
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participants (3)
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Bruce -
Footleg -
Martin Sluka