Get rotation(transformation)
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Well... here's how I'd do it...
<span class="syntaxdefault">module TIG<br /> def self</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">hatchfaces</span><span class="syntaxkeyword">()<br /> </span><span class="syntaxdefault">model</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model<br /> ents</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_entities<br /> name</span><span class="syntaxkeyword">=</span><span class="syntaxstring">'Hatching#1'<br /> </span><span class="syntaxdefault">defs</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">definitions<br /> spacing</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">2.0 </span><span class="syntaxcomment">### 2 inches ###<br /> </span><span class="syntaxdefault">ss</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">selection<br /> faces</span><span class="syntaxkeyword">=[]; </span><span class="syntaxdefault">ss</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">each</span><span class="syntaxkeyword">{|</span><span class="syntaxdefault">e</span><span class="syntaxkeyword">|</span><span class="syntaxdefault">faces </span><span class="syntaxkeyword"><< </span><span class="syntaxdefault">e </span><span class="syntaxkeyword">if </span><span class="syntaxdefault">e</span><span class="syntaxkeyword">.class==</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Face</span><span class="syntaxkeyword">}<br /> </span><span class="syntaxdefault">model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">start_operation</span><span class="syntaxkeyword">(</span><span class="syntaxstring">'hatchfaces'</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">faces</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">each</span><span class="syntaxkeyword">{|</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">|<br /> </span><span class="syntaxdefault">names</span><span class="syntaxkeyword">=[]; </span><span class="syntaxdefault">defs</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">each</span><span class="syntaxkeyword">{|</span><span class="syntaxdefault">d</span><span class="syntaxkeyword">|</span><span class="syntaxdefault">names </span><span class="syntaxkeyword"><< </span><span class="syntaxdefault">d</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">instances</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">name </span><span class="syntaxkeyword">if </span><span class="syntaxdefault">d</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">group</span><span class="syntaxkeyword">?}<br /> </span><span class="syntaxdefault">name</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">next</span><span class="syntaxkeyword">! while </span><span class="syntaxdefault">names</span><span class="syntaxkeyword">.include?(</span><span class="syntaxdefault">name</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">gp</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">ents</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">add_group</span><span class="syntaxkeyword">()<br /> </span><span class="syntaxdefault">gp</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">name</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">name<br /> gents</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">gp</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">entities<br /> face</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">gents</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">add_face</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">vertices</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">bb</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">bounds<br /> di</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">bb</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">diagonal<br /> pt</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">vertices</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">position<br /> ve</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">pt</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">vector_to</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">vertices</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">1</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">position</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">po</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">pt</span><span class="syntaxkeyword">.clone<br /> </span><span class="syntaxdefault">tr</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">Geom</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Transformation</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">rotation</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">pt</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">face</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">normal</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">45.degrees</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">vp</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">ve</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">transform</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">tr</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">vp</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">length</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">di</span><span class="syntaxkeyword">*</span><span class="syntaxdefault">2<br /> tot</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">0<br /> until tot</span><span class="syntaxkeyword">>=</span><span class="syntaxdefault">di<br /> ps</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">pt</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">offset</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">vp</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">pe</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">pt</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">offset</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">vp</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">reverse</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">gents</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">add_line</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">ps</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">pe</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">pt</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">offset</span><span class="syntaxkeyword">!(</span><span class="syntaxdefault">ve</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">spacing</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">ps</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">po</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">offset</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">vp</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">pe</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">po</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">offset</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">vp</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">reverse</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">gents</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">add_line</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">ps</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">pe</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">po</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">offset</span><span class="syntaxkeyword">!(</span><span class="syntaxdefault">ve</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">reverse</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">spacing</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">tot</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">tot</span><span class="syntaxkeyword">+</span><span class="syntaxdefault">spacing<br /> end</span><span class="syntaxcomment">#until<br /> </span><span class="syntaxdefault">tr</span><span class="syntaxkeyword">=</span><span class="syntaxdefault">Geom</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Transformation</span><span class="syntaxkeyword">.new()<br /> </span><span class="syntaxdefault">gents</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">intersect_with</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">true</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">tr</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">gents</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">tr</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">true</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">gents</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">to_a</span><span class="syntaxkeyword">)<br /> </span><span class="syntaxdefault">gents</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">to_a</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">each</span><span class="syntaxkeyword">{|</span><span class="syntaxdefault">e</span><span class="syntaxkeyword">|</span><span class="syntaxdefault">e</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">erase</span><span class="syntaxkeyword">! if </span><span class="syntaxdefault">e</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">valid</span><span class="syntaxkeyword">? and </span><span class="syntaxdefault">e</span><span class="syntaxkeyword">.class==</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Edge </span><span class="syntaxkeyword">and </span><span class="syntaxdefault">e</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">faces</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">length</span><span class="syntaxkeyword">==</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">}<br /> </span><span class="syntaxdefault">gents</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">to_a</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">each</span><span class="syntaxkeyword">{|</span><span class="syntaxdefault">e</span><span class="syntaxkeyword">|</span><span class="syntaxdefault">e</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">erase</span><span class="syntaxkeyword">! if </span><span class="syntaxdefault">e</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">valid</span><span class="syntaxkeyword">? and </span><span class="syntaxdefault">e</span><span class="syntaxkeyword">.class==</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Face</span><span class="syntaxkeyword">}<br /> }<br /> </span><span class="syntaxdefault">model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">commit_operation<br /> end<br />end<br /></span><span class="syntaxcomment">### usage; select faces, TIG.hatchfaces<br /> </span><span class="syntaxdefault"></span> -
WOW, you rewrote the whole script?!!! You are quite amazing. But, but.. Its your plugin, then??
Heh, I almost got mine to work except the "petite" distance between lines thingy..
Can I load the code in ruby code editor and launch? Cause nothing happends when I run your script.
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Please use it [or ideas in it] as you will - for example it doesn't always set the hatching at 45 degrees to where you might want just relative to the first edge of each face...
There's no options for the angle or spacing - add a dialog for those?
It's not optimized as it often makes more/longer edges than it needs to make the hatching but it was a quick kludge to make it work - to see what it does disable the closing parts that intersect/erase edges etc and use it on one face...It has ideas in it that should help you...
PS: You have to have one or more faces selected before running it...
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You are so helpful. I can almost not believe it..
Thank you TIG!I will continue with my script since I understand easier where variables are pointing to.
See where I have gone wrong in some areas and use your script as a guidence.Thanks a million!
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@jolran said:
I'm getting it to work almost.
@unknownuser said:
vector.length=20.0
The copied distance will always be desired length on the vectors line, but depending on the angle of diagonal the edges will not be same distance apart. So I guess I will have to do another compensation? Or is there some Quick fix like the last one(thank you TIG)
I'm guessing will have to do a comparison between Diagonal, user(desired angle, here 45 deg) and somehow
compensate the copy distance for that. Boy this is hard..Here is a example of finding the normal vector of a grouped line, using a cross product. The cross product of two vectors prduces a third vector, at right angles to the original ones.
model = Sketchup.active_model ent = model.entities sel = model.selection line = ent.add_line [3,3,0], [5,5,0] group = ent.add_group line v1 = line.vertices[0].position.transform(group.transformation) v2 = line.vertices[1].position.transform(group.transformation) v = v1.vector_to v2 # I used z vector as 2nd vector, but can try "face.normal" for general case normal_vec = v.cross([0,0,1]) #cross product to get normal vector pt = [0,0,0] demo = ent.add_line pt, pt.offset(normal_vec) #drew demo line representing normal vector demo.material = 'red' n = normal_vec n.length = 1 g1 = group.copy g1.transform! n # moved copied group using normal vector -
Hi Kyyu!
Interresting. So you mean I use the 3rd vector for measuring? Or was it meant to be
a method to get an angle 45 deg of the vector?
Remember 45 deg is just an example for this particular hatching. The user must be able to
choose any angle for the lines across the face.I will look into it more and see if I understand you code a little better.
Thank you Kyyu. -
@jolran said:
Hi Kyyu!
Interresting. So you mean I use the 3rd vector for measuring? Or was it meant to be
a method to get an angle 45 deg of the vector?
Remember 45 deg is just an example for this particular hatching. The user must be able to
choose any angle for the lines across the face.I will look into it more and see if I understand you code a little better.
Thank you Kyyu.The 3rd vector would be your translation vector. In your code you have it as:
vector=diag_vect vector.length= user_lengthIt's perpendicular to what ever your final line is. Here, I just changed the line to a random new angle, not 45 deg. I set the length of the vector (distance of translation) to 1.
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Translation vector? The translation must be on the diagonal or the lines wont cover the whole face.
I already have the rotation of lines, copy/translation set up. Except that the "bug" is that
the translation distance doesent get 100% accurate if the face is very distorted.
Maybe that is what you are trying to fix, and I don't see it.
If thats the case sorry
I'm a noob, you know.The angles of lines on the picture are the identical. Although they don't appear to be.
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Hate to bother again, but I've been going on all day and intersect_with is troublesome.
Tried TIG's combo, and others but I think I'm making a fundamentional fault.
Doesent intersect_with work with nested groups?tr3=Geom::Transformation.new()
face_group.entities.intersect_with(recursion,tr3,face_group,tr3,true,[hatch_lines_group]) -
If you read through the way I did it... I make a hatching group then simply add a face and overly long hatching lines to it, intersect everything with each other, erase the faceless edges outside of the face perimeter and then erase the faces too. I never use subgroups - if you want to then just explode them...
You are better off transforming points/vectors and drawing the edges that grouping things endlessly/needlessly it'll be slooooow
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@unknownuser said:
I make a hatching group then simply add a face and overly long hatching lines to it, intersect everything with each other, erase the faceless edges outside of the face perimeter and then erase the faces too
Aha! Did not quite understand what was going on.
Yes, yes I will TRY to do the same. That way I will learn the right way. Slow doesent sound good
My resulted line_groups apears pretty fast on screen for the moment though, and its possible to make
a manual intersect with selected. But a lot cooler if it is manual. -
@jolran said:
...Except that the "bug" is that the translation distance doesent get 100% accurate if the face is very distorted.
Maybe that is what you are trying to fix, and I don't see it.
If thats the case sorry I'm a noob, you know.Yes, that is what I am showing how to fix.
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Where my script does a transformation.rotation on things simply using
45.degreesso it your user inputs an angle in a dialog as a 'float' - e.g. 12.5 use -angle=results[0]andspacing=results[1](or whatever your dialog returns) and then in the transformation.rotation useangle.degreesinstead... -
Great!! Will try that. But? That correction will just be a fix for the dialoginput, no?
I havent gotten that far yetOr maybe you mean your advice WILL fix missing geometry in the corners in certain angles)? Cause thats what bugging me, atm. I was only using Int's changing the angles and spacing.
Maybe that face.normal rotation of yours doesent work in all angles? Unless som serious fix?
Then using grouped edges might be more suitable, what do you think?
I'm not questioning anything, just don't know wich way to go.Thank you TIG.
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BTW. The splats in my script was probably coming from the outliner open.
So Hmm. The direction I'm taking now is using edge_group_copying(my original idea). I cannot modify TIG's version due to lack of understanding. Not sure it will work like it is. But I'm a screwbie with bad solutions, so TIG can probably just wack in something just like that to prove I'm wrong
But I will try to use the face normal to align my copies like in TIG's script, just to
have something to work on.
And use Kyuu's example for getting better accuracy with the distance between copies.
Methods for each view/axis would prob. make the script unnecessary long.
ABout adding groups. Sketchup doesent like it when your inside a group in model mode-
select a face- then by code add a group?No suggestions I suppose?
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Ok! Thats very nice Kyyu!
Will rework your advice. It looks like a smart solution. But I'm pretty confused right now...
I managed to get the intersect_with working in "my" code. It hatches as it should do in the X,Z-axis, although with the distance-error, your trying to correct. However selecting a face inside a group in Sketchup and running the script gives a constant bugsplat. So I don't know if I should go forward an do the other views yet. Does not feel solid.
I'm also worried going against TIG's advice with using groups hey-wild, but I can't implement his code into mine. It's to complicated to understand for me and can't get it to run properly.
IF I can get the problem with creating hatches inside Sketchup model.groupes, and the distance between lines can be fixed, I think the performance would be OK with my version. But maybe the problem cannot be fixed other
than rewriting everything as TIG says..
I'm not lazy, just dumb.. -
Ok, take2. A little bit forward. Baby steps.
So I've been going trough TIG's script 2 days now and I think I understand it better.
It's of course much more sofisticated an more effective than my intentional idea,
not surprisinglyvp.length=di*2 tot=0 until tot>=di*3 # fixes -45 deg. corner issueMade an adjustment to line 27 di*3(was di). It's an until.statement, where it keep copying the edges on an offset until the "offset-amount" has reached the length of the diagonal?
(Hope I got that right..) So by multiplying the di by 3 it will get those extra edges
needed to cover the corners with steep angles. Extra calculation YES! But needed.Have not fixed issues of spacing. The spacing is OK when kept around 45 degrees.
But gets narrower when the degrees amount goes "away" from the original amount.MOST cases doing hatches one uses 45 degrees anyway. -45 and 45 degrees.
So I will go ahead and try too make the ver1. UI now.
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I'm getting it to work almost.
@unknownuser said:
vector.length=20.0
The copied distance will always be desired length on the vectors line, but depending on the angle of diagonal the edges will not be same distance apart. So I guess I will have to do another compensation? Or is there some Quick fix like the last one(thank you TIG)
I'm guessing will have to do a comparison between Diagonal, user(desired angle, here 45 deg) and somehow
compensate the copy distance for that. Boy this is hard..mod = Sketchup.active_model # Open model ent = mod.entities # All entities in model sel = mod.selection # Current selection =begin TODO Wrap in module. Get proper names. Shorter strings. def methods for different Axis. Name them as SU views. After Inputbox call appropriate method. Use instance or global variables, necessary? INPUTBOX promt; Hatch line degrees, distance between edges. Extras; Background color, keep background? Intersect with method. =end face_group = ent.add_group(sel) Sketchup.active_model.selection.add( face_group ) bbox = face_group.bounds bpt1 = bbox.corner(0) bpt2 = bbox.corner(1) bpt3 = bbox.corner(2) bpt4 = bbox.corner(3) bpt5 = bbox.corner(4) bpt6 = bbox.corner(5) bpt7 = bbox.corner(6) bpt8 = bbox.corner(7) pt1 =bpt1 pt2 =bpt2 pt3 =bpt3 pt4 =bpt4 pt5 =bpt5 pt6 =bpt6 pt7 =bpt7 pt8 =bpt8 # get center, diagonal vector directions from bbox # mesure angle between x and diagonal x_cen = bbox.center x_diag = bbox.diagonal x_vect = pt1.vector_to pt4 # horisontal X-axis line diag_vect = pt1.vector_to pt6 # vector across x_ang = x_vect.angle_between(diag_vect).radians user_input = 45 # Will get shorter alias user_length = 20.cm # Will get shorter alias substitute for cm? Must work in inches. h_group =ent.add_group() line_group=ent.add_group() ###==new empty groups line_group.entities.add_line(pt1, pt6) # rotate and reset parallel to X tr1 = Geom;;Transformation.rotation x_cen, [0,1,0],(x_ang).degrees tr2 = Geom;;Transformation.rotation x_cen, [0,1,0],(user_input).degrees ent.transform_entities tr1, (line_group) ent.transform_entities tr2, (line_group) cop_dist = x_diag/2 #copy distance/2 copies from center to top corner cop_times = cop_dist/user_length vector=diag_vect vector.length= user_length gp=line_group groups=[gp] cop_times.to_i.times{|i| tgp=gp.copy tgp.transform!(Geom;;Transformation.translation(vector)) gp=tgp groups << gp } #my_transformed_vector.length=20.0 -
I finally got TIG's version going(forgot to comment out #def.self when running it in R.code.editor, amanidiot!)
SOme funky thing going on when changing hatch_angle. But its stable and works in any axis.Not what can be said about "my" script. A bit unstable, until the intersectionpart.
My intuition tells me doing copying edges within groups + intersection gives more predictable hatch_result when rotating hatches. But is alot more unstable when gathering and erasing?Plan A: Stop whining and get the work done so Layout-users finally have a hatch-plugin
Plan B: Adjust TIG's script so it works in all angles, with menus and such.
(will be difficult, since I don't totally understand it yet)PlanC: Continue to work on mine(a bit egoistic but I won't learn from copy/paste), integration as much of TIG's script as I can, thus make my script more stable if possible.
However. That might not be possible, and I would have to do at least 5 different methods for views.I guess I'm asking if there is any pointers for things to avoid that make this script crash.
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