Inkscape Gcodetools plug-in English support forum

Nick · Сообщение **Nick** » 10 дек 2009, 10:28

: Generated Gcode in EMC2

Type	Extension of vector graphics editor Inkscape
Developer	Gcodetools develop team
Written in	Python
OS	Cross-Platform (Windows, Linux, MacOS)
Version	1.6.03
License	GNU GPL
Downloads	7800+

Gcodetools

Gcodetools is a plug-in for Inkscape. It prepares and converts paths from Inkscape to Gcode, using biarc interpolation.

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Nick · Сообщение **Nick** » 17 сен 2012, 20:09

tomate писал(а):I'll have a look at Bzr to learn how it works.

It is simple until you do not have merges problems. Just use bzr pull lp:gcodetools to get the files and bzr commit + bzr push lp:gcodetools to push the files.

tomate писал(а):Your solution seams powerful, but I am afraid I didn't understand how it works yet. I will do some testing to get it.

it is using lambda function which is defined as:
depth = lambda c,d,s : "function from the Gcodetools"
so if you define it in gcodetools = d it will be
depth = lambda c,d,s : d
i.e. it returns value defined by Orientation points, but you can do something like
c*d+(1-c)*s
then you'll have linear interpolation between surface and depth depending on color intensity.

tomate писал(а):Yes, all the guitar body was made with gcodetools and LinuxCNC.

That's awesome

!

tomate · Сообщение **tomate** » 18 сен 2012, 11:29

Hi Nick,

OK, I understood the lambda function stuff.
But I think that allowing the user to specify a custom depth to each path using a XML tag would add a more newbie, no-math, option.
The drawback is that it is only accessible with the XML tree editor, that is a big non-dockable window.
It would easier if these custom tags could be accessible in the "Object Properties" window.

Anyway, I made a working version of this feature.
I will try to find the time to push it today.

Tomate

Nick · Сообщение **Nick** » 18 сен 2012, 12:33

tomate писал(а):It would easier if these custom tags could be accessible in the "Object Properties" window.

There was a kind of feature in Gcodetools which took Object Properties. We can try to use them.

tomate писал(а):Anyway, I made a working version of this feature.

I think the best solution will be adding another argument to that lambda function to make it able to use that defined depth.
I.e. we've got to change this two lines:

Код: Выделить всё

					depth_func = eval('lambda c,d,s: ' + self.options.path_to_gcode_depth_function.strip('"'))				
to
					depth_func = eval('lambda c,d,s,optd: ' + self.options.path_to_gcode_depth_function.strip('"'))
...............				
and 
...............
										 	[id_, depth_func(c,zd,zs), comment],
to 
										 	[id_, depth_func(c,zd,zs,optd), comment],

and define value for opt_d. Then we can just use opt_d as depth_function for your needs.

tomate · Сообщение **tomate** » 18 сен 2012, 12:57

There was a kind of feature in Gcodetools which took Object Properties. We can try to use them.

OK, I found the "get_path_properties" function
So I need to use it to get a "depth:something" in the desciption and affect it to "optd"
Many thanks, I will work on that.

Nick · Сообщение **Nick** » 18 сен 2012, 13:42

tomate писал(а):depth:something

best way should be to use regular expressions, something like this:

Код: Выделить всё

r = re.match("depth\s*:\s*(\-?[0-9\.]+)",s):
if r:
  depth = float(r.group(1))

tomate · Сообщение **tomate** » 18 сен 2012, 13:51

Wow, perfect timing : I was just working on this step !
Thanks

tomate · Сообщение **tomate** » 18 сен 2012, 14:17

Nick писал(а):I think the best solution will be adding another argument to that lambda function to make it able to use that defined depth.

The drawback of using this solution is that we cannot mix paths with "custom depth" and paths with "default depth" ( of the orientation points ) (ie : that have no "custom depth" set )

Nick · Сообщение **Nick** » 18 сен 2012, 14:22

Then we can do lkie this:

Код: Выделить всё

r = re.match("depth\s*:\s*(\-?[0-9\.]+)",s):
if r:
  depth = float(r.group(1)) 
else: 
  depth = orientation_points_depth

or write in depth function:
optd if optd != None else : d

tomate · Сообщение **tomate** » 18 сен 2012, 18:15

Ok, I got it working.
Ready to commit ...
Just to be sure ( I'm a bit anxious about committing this change, I wouldn't want to break everything ) :

bzr launchpad-login my-id
bzr commit -m "add possibility to specify custom depth in object description" gcodetools-dev.py

That's all ?

Nick · Сообщение **Nick** » 18 сен 2012, 18:38

tomate писал(а):bzr launchpad-login my-id

this one is usualy needed only once.

tomate писал(а):bzr commit -m "add possibility to specify custom depth in object description" gcodetools-dev.py

You can use just "bzr commit", and it will generate summary and will allow you to add notes.
Then
"bzr push lp:gcodetools" to push the code.
Any way Bazaar has version control, any bad changes can be undone

tomate · Сообщение **tomate** » 18 сен 2012, 21:03

My code is commited.
I hope it worked

Nick · Сообщение **Nick** » 19 сен 2012, 00:45

Yes, something definitely has being pushed to repository

.
Unfortunately I can not check it right now.

tomate · Сообщение **tomate** » 19 сен 2012, 12:21

Ahaha, yeah, ***SOMETHING*** has been pushed.
Thanks for your help.
These were the 2 things that I wanted to add to the code.
Now, I will be happy to help on other parts of the code, if you wish, as soon as it is pretty trivial things ( as you may have noticed, I am not a very experienced coder ).

Tomate

Nick · Сообщение **Nick** » 19 сен 2012, 13:24

The main tast for now is prepare the code for new release. And push it to inkscape's trunk.
But I can not even imagine what is to be done to make it able

.

Another main task is to finish up offset of the biarc curve. It's almost done but there are a number of bugs which are to be fixed. Do you have any knowledge in planar geometry?

And there are some smaller but important tasks - the most main of them is to rewrite the code using new classes Biarc and CSP instead of old csp and biarc functions. This should make the code easier to read and, I think, faster to execute.

And as it was in your case make improvements based on yours (or users) needs.

tomate · Сообщение **tomate** » 19 сен 2012, 23:26

Another main task is to finish up offset of the biarc curve. It's almost done but there are a number of bugs which are to be fixed. Do you have any knowledge in planar geometry?

Well ... I studied maths and physics at the university, but it was 20 years ago. And nowadays, I am not even able to do a divide operation by hand any more

the most main of them is to rewrite the code using new classes Biarc and CSP instead of old csp and biarc functions.

Maybe I could give a try at it, but I looked at the code this afternoon, and I am not sure I will be able to help ....
I think I should first take back and read again my "Python for the newbie" book

Nick · Сообщение **Nick** » 19 сен 2012, 23:42

Almost the same thing for me.

But if you'll gona need a new function, you'll now you can do it

!

deece · Сообщение **deece** » 30 сен 2012, 14:31

Attached is a patch which fixes a couple of spelling errors and implements the "spindle rpm" feature.

Nick · Сообщение **Nick** » 30 сен 2012, 14:53

Thanks! Will push it into the repo!

alfcnc · Сообщение **alfcnc** » 03 окт 2012, 13:10

Hi ! I want try new engraving but after have update my gcodetools extension to last ver 246. I have this error, with engraving or path to gcode.

Traceback (most recent call last):
File "gcodetools-dev.py", line 8175, in <module>
gcodetools.affect()
File "/usr/share/inkscape/extensions/inkex.py", line 215, in affect
self.effect()
File "gcodetools-dev.py", line 8099, in effect
self.path_to_gcode()
File "gcodetools-dev.py", line 5986, in path_to_gcode
gcode += self.generate_gcode(curve, layer, z)
File "gcodetools-dev.py", line 5268, in generate_gcode
if "" != self.tool["spindle rpm"] :
AttributeError: Gcodetools instance has no attribute 'tool'

Nick · Сообщение **Nick** » 03 окт 2012, 13:47

Fixxed that see Rev. 247, thanks for bug report

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