JW
Joe Weinpert
Sat, May 7, 2022 4:28 PM
Having a problem understanding the "for" function. Heck, I'm having a
problem understanding programs where all the variables are calculated at
compile time and not runtime.
I have an array of 11 *svg *strings named "svgArray" indexed as 0-10.
This one is from index 4:
["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l
4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
svg strings can be converted to a point array using the pathbuilder
library function svgPoints(). The above string is converted into this:
[[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747,
9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242],
[60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971,
14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857],
[67.1286, 6.89428], [64.5886, 6.89428]]
But ...
I would like to create an indexed array of the points named "pathArray"
to match each one in the "svgArray". This means I have to loop through
the "svgArray", convert the current one to a point array using the
svgPoints() function then append it to the "pathArray" being generated.
How can I do that so I can use the array of point arrays throughout the
rest of the scad program?
Having a problem understanding the "*for*" function. Heck, I'm having a
problem understanding programs where all the variables are calculated at
compile time and not runtime.
I have an array of 11 *svg *strings named "*svgArray"* indexed as 0-10.
This one is from index 4:
["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l
4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
svg strings can be converted to a *point array* using the *pathbuilder*
library function svgPoints(). The above string is converted into this:
[[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747,
9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242],
[60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971,
14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857],
[67.1286, 6.89428], [64.5886, 6.89428]]
But ...
I would like to create an indexed array of the points named "*pathArray*"
to match each one in the "*svgArray*". This means I have to loop through
the "*svgArray*", convert the current one to a point array using the
*svgPoints*() function then append it to the "*pathArray*" being generated.
How can I do that so I can use the array of point arrays throughout the
rest of the scad program?
HL
Hans L
Sat, May 7, 2022 4:41 PM
You would do something like this, if I'm understanding your problem correctly:
pathArray = [for(element = svgArray) svgPoints(element)];
On Sat, May 7, 2022 at 11:28 AM Joe Weinpert joe.weinpert@gmail.com wrote:
Having a problem understanding the "for" function. Heck, I'm having a problem understanding programs where all the variables are calculated at compile time and not runtime.
I have an array of 11 svg strings named "svgArray" indexed as 0-10. This one is from index 4:
["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
svg strings can be converted to a point array using the pathbuilder library function svgPoints(). The above string is converted into this:
[[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
But ...
I would like to create an indexed array of the points named "pathArray" to match each one in the "svgArray". This means I have to loop through the "svgArray", convert the current one to a point array using the svgPoints() function then append it to the "pathArray" being generated.
How can I do that so I can use the array of point arrays throughout the rest of the scad program?
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
You would do something like this, if I'm understanding your problem correctly:
pathArray = [for(element = svgArray) svgPoints(element)];
On Sat, May 7, 2022 at 11:28 AM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>
> Having a problem understanding the "for" function. Heck, I'm having a problem understanding programs where all the variables are calculated at compile time and not runtime.
>
> I have an array of 11 svg strings named "svgArray" indexed as 0-10. This one is from index 4:
>
> ["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
>
> svg strings can be converted to a point array using the pathbuilder library function svgPoints(). The above string is converted into this:
>
> [[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
>
> But ...
>
> I would like to create an indexed array of the points named "pathArray" to match each one in the "svgArray". This means I have to loop through the "svgArray", convert the current one to a point array using the svgPoints() function then append it to the "pathArray" being generated.
>
> How can I do that so I can use the array of point arrays throughout the rest of the scad program?
>
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
JW
Joe Weinpert
Sat, May 7, 2022 5:07 PM
Seems to be working. Thanks! What is the purpose of the brackets in
openSCAD?
On Sat, May 7, 2022 at 12:42 PM Hans L thehans@gmail.com wrote:
You would do something like this, if I'm understanding your problem
correctly:
pathArray = [for(element = svgArray) svgPoints(element)];
On Sat, May 7, 2022 at 11:28 AM Joe Weinpert joe.weinpert@gmail.com
wrote:
Having a problem understanding the "for" function. Heck, I'm having a
problem understanding programs where all the variables are calculated at
compile time and not runtime.
I have an array of 11 svg strings named "svgArray" indexed as 0-10.
This one is from index 4:
["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l
4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
svg strings can be converted to a point array using the pathbuilder
library function svgPoints(). The above string is converted into this:
[[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747,
9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242],
[60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971,
14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857],
[67.1286, 6.89428], [64.5886, 6.89428]]
But ...
I would like to create an indexed array of the points named "pathArray"
to match each one in the "svgArray". This means I have to loop through the
"svgArray", convert the current one to a point array using the svgPoints()
function then append it to the "pathArray" being generated.
How can I do that so I can use the array of point arrays throughout the
rest of the scad program?
Seems to be working. Thanks! What is the purpose of the brackets in
openSCAD?
On Sat, May 7, 2022 at 12:42 PM Hans L <thehans@gmail.com> wrote:
> You would do something like this, if I'm understanding your problem
> correctly:
> pathArray = [for(element = svgArray) svgPoints(element)];
>
> On Sat, May 7, 2022 at 11:28 AM Joe Weinpert <joe.weinpert@gmail.com>
> wrote:
> >
> > Having a problem understanding the "for" function. Heck, I'm having a
> problem understanding programs where all the variables are calculated at
> compile time and not runtime.
> >
> > I have an array of 11 svg strings named "svgArray" indexed as 0-10.
> This one is from index 4:
> >
> > ["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l
> 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
> >
> > svg strings can be converted to a point array using the pathbuilder
> library function svgPoints(). The above string is converted into this:
> >
> > [[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747,
> 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242],
> [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971,
> 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857],
> [67.1286, 6.89428], [64.5886, 6.89428]]
> >
> > But ...
> >
> > I would like to create an indexed array of the points named "pathArray"
> to match each one in the "svgArray". This means I have to loop through the
> "svgArray", convert the current one to a point array using the svgPoints()
> function then append it to the "pathArray" being generated.
> >
> > How can I do that so I can use the array of point arrays throughout the
> rest of the scad program?
> >
> >
> > _______________________________________________
> > OpenSCAD mailing list
> > To unsubscribe send an email to discuss-leave@lists.openscad.org
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
AM
Adrian Mariano
Sat, May 7, 2022 5:18 PM
The brackets make the item a list, just like in the example [1,2,3].
Without the brackets it's just like a bunch of numbers, like writing
1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
5,6,7] if you want some additional items in your list. Or
[1,2,3,for(...),5,6,if (condition) 19].
On Sat, May 7, 2022 at 1:08 PM Joe Weinpert joe.weinpert@gmail.com wrote:
Seems to be working. Thanks! What is the purpose of the brackets in openSCAD?
On Sat, May 7, 2022 at 12:42 PM Hans L thehans@gmail.com wrote:
You would do something like this, if I'm understanding your problem correctly:
pathArray = [for(element = svgArray) svgPoints(element)];
On Sat, May 7, 2022 at 11:28 AM Joe Weinpert joe.weinpert@gmail.com wrote:
Having a problem understanding the "for" function. Heck, I'm having a problem understanding programs where all the variables are calculated at compile time and not runtime.
I have an array of 11 svg strings named "svgArray" indexed as 0-10. This one is from index 4:
["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
svg strings can be converted to a point array using the pathbuilder library function svgPoints(). The above string is converted into this:
[[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
But ...
I would like to create an indexed array of the points named "pathArray" to match each one in the "svgArray". This means I have to loop through the "svgArray", convert the current one to a point array using the svgPoints() function then append it to the "pathArray" being generated.
How can I do that so I can use the array of point arrays throughout the rest of the scad program?
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
The brackets make the item a list, just like in the example [1,2,3].
Without the brackets it's just like a bunch of numbers, like writing
1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
5,6,7] if you want some additional items in your list. Or
[1,2,3,for(...),5,6,if (condition) 19].
On Sat, May 7, 2022 at 1:08 PM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>
> Seems to be working. Thanks! What is the purpose of the brackets in openSCAD?
>
> On Sat, May 7, 2022 at 12:42 PM Hans L <thehans@gmail.com> wrote:
>>
>> You would do something like this, if I'm understanding your problem correctly:
>> pathArray = [for(element = svgArray) svgPoints(element)];
>>
>> On Sat, May 7, 2022 at 11:28 AM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>> >
>> > Having a problem understanding the "for" function. Heck, I'm having a problem understanding programs where all the variables are calculated at compile time and not runtime.
>> >
>> > I have an array of 11 svg strings named "svgArray" indexed as 0-10. This one is from index 4:
>> >
>> > ["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
>> >
>> > svg strings can be converted to a point array using the pathbuilder library function svgPoints(). The above string is converted into this:
>> >
>> > [[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
>> >
>> > But ...
>> >
>> > I would like to create an indexed array of the points named "pathArray" to match each one in the "svgArray". This means I have to loop through the "svgArray", convert the current one to a point array using the svgPoints() function then append it to the "pathArray" being generated.
>> >
>> > How can I do that so I can use the array of point arrays throughout the rest of the scad program?
>> >
>> >
>> > _______________________________________________
>> > OpenSCAD mailing list
>> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>> _______________________________________________
>> OpenSCAD mailing list
>> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
JW
Joe Weinpert
Sat, May 7, 2022 5:25 PM
So, what you are saying is the brackets with for are only used when
making an array (list) of something, correct?
On Sat, May 7, 2022 at 1:18 PM Adrian Mariano avm4@cornell.edu wrote:
The brackets make the item a list, just like in the example [1,2,3].
Without the brackets it's just like a bunch of numbers, like writing
1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
5,6,7] if you want some additional items in your list. Or
[1,2,3,for(...),5,6,if (condition) 19].
On Sat, May 7, 2022 at 1:08 PM Joe Weinpert joe.weinpert@gmail.com
wrote:
Seems to be working. Thanks! What is the purpose of the brackets in
You would do something like this, if I'm understanding your problem
pathArray = [for(element = svgArray) svgPoints(element)];
On Sat, May 7, 2022 at 11:28 AM Joe Weinpert joe.weinpert@gmail.com
Having a problem understanding the "for" function. Heck, I'm having
a problem understanding programs where all the variables are calculated at
compile time and not runtime.
I have an array of 11 svg strings named "svgArray" indexed as 0-10.
This one is from index 4:
["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l
4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
svg strings can be converted to a point array using the pathbuilder
library function svgPoints(). The above string is converted into this:
[[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634],
[59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327,
12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659],
[60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915,
8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
But ...
I would like to create an indexed array of the points named
"pathArray" to match each one in the "svgArray". This means I have to loop
through the "svgArray", convert the current one to a point array using the
svgPoints() function then append it to the "pathArray" being generated.
How can I do that so I can use the array of point arrays throughout
the rest of the scad program?
So, what you are saying is the brackets with *for* are only used when
making an array (list) of something, correct?
On Sat, May 7, 2022 at 1:18 PM Adrian Mariano <avm4@cornell.edu> wrote:
> The brackets make the item a list, just like in the example [1,2,3].
> Without the brackets it's just like a bunch of numbers, like writing
> 1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
> 5,6,7] if you want some additional items in your list. Or
> [1,2,3,for(...),5,6,if (condition) 19].
>
> On Sat, May 7, 2022 at 1:08 PM Joe Weinpert <joe.weinpert@gmail.com>
> wrote:
> >
> > Seems to be working. Thanks! What is the purpose of the brackets in
> openSCAD?
> >
> > On Sat, May 7, 2022 at 12:42 PM Hans L <thehans@gmail.com> wrote:
> >>
> >> You would do something like this, if I'm understanding your problem
> correctly:
> >> pathArray = [for(element = svgArray) svgPoints(element)];
> >>
> >> On Sat, May 7, 2022 at 11:28 AM Joe Weinpert <joe.weinpert@gmail.com>
> wrote:
> >> >
> >> > Having a problem understanding the "for" function. Heck, I'm having
> a problem understanding programs where all the variables are calculated at
> compile time and not runtime.
> >> >
> >> > I have an array of 11 svg strings named "svgArray" indexed as 0-10.
> This one is from index 4:
> >> >
> >> > ["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l
> 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
> >> >
> >> > svg strings can be converted to a point array using the pathbuilder
> library function svgPoints(). The above string is converted into this:
> >> >
> >> > [[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634],
> [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327,
> 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659],
> [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915,
> 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
> >> >
> >> > But ...
> >> >
> >> > I would like to create an indexed array of the points named
> "pathArray" to match each one in the "svgArray". This means I have to loop
> through the "svgArray", convert the current one to a point array using the
> svgPoints() function then append it to the "pathArray" being generated.
> >> >
> >> > How can I do that so I can use the array of point arrays throughout
> the rest of the scad program?
> >> >
> >> >
> >> > _______________________________________________
> >> > OpenSCAD mailing list
> >> > To unsubscribe send an email to discuss-leave@lists.openscad.org
> >> _______________________________________________
> >> OpenSCAD mailing list
> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
> >
> > _______________________________________________
> > OpenSCAD mailing list
> > To unsubscribe send an email to discuss-leave@lists.openscad.org
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
AM
Adrian Mariano
Sat, May 7, 2022 7:26 PM
Yes, the brackets are used only when making a list, though lists of
numbers not in brackets are not valid by themselves, so you can't just
remove the brackets. The other possible use of for() is as a module,
to make geometry, and it doesn't use brackets.
On Sat, May 7, 2022 at 1:25 PM Joe Weinpert joe.weinpert@gmail.com wrote:
So, what you are saying is the brackets with for are only used when making an array (list) of something, correct?
On Sat, May 7, 2022 at 1:18 PM Adrian Mariano avm4@cornell.edu wrote:
The brackets make the item a list, just like in the example [1,2,3].
Without the brackets it's just like a bunch of numbers, like writing
1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
5,6,7] if you want some additional items in your list. Or
[1,2,3,for(...),5,6,if (condition) 19].
On Sat, May 7, 2022 at 1:08 PM Joe Weinpert joe.weinpert@gmail.com wrote:
Seems to be working. Thanks! What is the purpose of the brackets in openSCAD?
On Sat, May 7, 2022 at 12:42 PM Hans L thehans@gmail.com wrote:
You would do something like this, if I'm understanding your problem correctly:
pathArray = [for(element = svgArray) svgPoints(element)];
On Sat, May 7, 2022 at 11:28 AM Joe Weinpert joe.weinpert@gmail.com wrote:
Having a problem understanding the "for" function. Heck, I'm having a problem understanding programs where all the variables are calculated at compile time and not runtime.
I have an array of 11 svg strings named "svgArray" indexed as 0-10. This one is from index 4:
["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
svg strings can be converted to a point array using the pathbuilder library function svgPoints(). The above string is converted into this:
[[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
But ...
I would like to create an indexed array of the points named "pathArray" to match each one in the "svgArray". This means I have to loop through the "svgArray", convert the current one to a point array using the svgPoints() function then append it to the "pathArray" being generated.
How can I do that so I can use the array of point arrays throughout the rest of the scad program?
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
Yes, the brackets are used only when making a list, though lists of
numbers not in brackets are not valid by themselves, so you can't just
remove the brackets. The other possible use of for() is as a module,
to make geometry, and it doesn't use brackets.
On Sat, May 7, 2022 at 1:25 PM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>
> So, what you are saying is the brackets with for are only used when making an array (list) of something, correct?
>
>
> On Sat, May 7, 2022 at 1:18 PM Adrian Mariano <avm4@cornell.edu> wrote:
>>
>> The brackets make the item a list, just like in the example [1,2,3].
>> Without the brackets it's just like a bunch of numbers, like writing
>> 1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
>> 5,6,7] if you want some additional items in your list. Or
>> [1,2,3,for(...),5,6,if (condition) 19].
>>
>> On Sat, May 7, 2022 at 1:08 PM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>> >
>> > Seems to be working. Thanks! What is the purpose of the brackets in openSCAD?
>> >
>> > On Sat, May 7, 2022 at 12:42 PM Hans L <thehans@gmail.com> wrote:
>> >>
>> >> You would do something like this, if I'm understanding your problem correctly:
>> >> pathArray = [for(element = svgArray) svgPoints(element)];
>> >>
>> >> On Sat, May 7, 2022 at 11:28 AM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>> >> >
>> >> > Having a problem understanding the "for" function. Heck, I'm having a problem understanding programs where all the variables are calculated at compile time and not runtime.
>> >> >
>> >> > I have an array of 11 svg strings named "svgArray" indexed as 0-10. This one is from index 4:
>> >> >
>> >> > ["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
>> >> >
>> >> > svg strings can be converted to a point array using the pathbuilder library function svgPoints(). The above string is converted into this:
>> >> >
>> >> > [[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
>> >> >
>> >> > But ...
>> >> >
>> >> > I would like to create an indexed array of the points named "pathArray" to match each one in the "svgArray". This means I have to loop through the "svgArray", convert the current one to a point array using the svgPoints() function then append it to the "pathArray" being generated.
>> >> >
>> >> > How can I do that so I can use the array of point arrays throughout the rest of the scad program?
>> >> >
>> >> >
>> >> > _______________________________________________
>> >> > OpenSCAD mailing list
>> >> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>> >> _______________________________________________
>> >> OpenSCAD mailing list
>> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
>> >
>> > _______________________________________________
>> > OpenSCAD mailing list
>> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>> _______________________________________________
>> OpenSCAD mailing list
>> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
HL
Hans L
Sat, May 7, 2022 7:26 PM
So, what you are saying is the brackets with for are only used when making an array (list) of something, correct?
On Sat, May 7, 2022 at 1:18 PM Adrian Mariano avm4@cornell.edu wrote:
The brackets make the item a list, just like in the example [1,2,3].
Without the brackets it's just like a bunch of numbers, like writing
1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
5,6,7] if you want some additional items in your list. Or
[1,2,3,for(...),5,6,if (condition) 19].
On Sat, May 7, 2022 at 1:08 PM Joe Weinpert joe.weinpert@gmail.com wrote:
Seems to be working. Thanks! What is the purpose of the brackets in openSCAD?
On Sat, May 7, 2022 at 12:42 PM Hans L thehans@gmail.com wrote:
You would do something like this, if I'm understanding your problem correctly:
pathArray = [for(element = svgArray) svgPoints(element)];
On Sat, May 7, 2022 at 11:28 AM Joe Weinpert joe.weinpert@gmail.com wrote:
Having a problem understanding the "for" function. Heck, I'm having a problem understanding programs where all the variables are calculated at compile time and not runtime.
I have an array of 11 svg strings named "svgArray" indexed as 0-10. This one is from index 4:
["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
svg strings can be converted to a point array using the pathbuilder library function svgPoints(). The above string is converted into this:
[[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
But ...
I would like to create an indexed array of the points named "pathArray" to match each one in the "svgArray". This means I have to loop through the "svgArray", convert the current one to a point array using the svgPoints() function then append it to the "pathArray" being generated.
How can I do that so I can use the array of point arrays throughout the rest of the scad program?
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Using "for" inside brackets is a form of list comprehension:
https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/List_Comprehensions
In that case "for" is part of an *expression*.
Outside of brackets, "for" is also defined, but in that case it is a
builtin *module* (it can generate geometry but does not return a
value)
https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Conditional_and_Iterator_Functions#For_Loop
Neither are technically "functions", just to be clear (since you
called it such in your original post)
On Sat, May 7, 2022 at 12:25 PM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>
> So, what you are saying is the brackets with for are only used when making an array (list) of something, correct?
>
>
> On Sat, May 7, 2022 at 1:18 PM Adrian Mariano <avm4@cornell.edu> wrote:
>>
>> The brackets make the item a list, just like in the example [1,2,3].
>> Without the brackets it's just like a bunch of numbers, like writing
>> 1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
>> 5,6,7] if you want some additional items in your list. Or
>> [1,2,3,for(...),5,6,if (condition) 19].
>>
>> On Sat, May 7, 2022 at 1:08 PM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>> >
>> > Seems to be working. Thanks! What is the purpose of the brackets in openSCAD?
>> >
>> > On Sat, May 7, 2022 at 12:42 PM Hans L <thehans@gmail.com> wrote:
>> >>
>> >> You would do something like this, if I'm understanding your problem correctly:
>> >> pathArray = [for(element = svgArray) svgPoints(element)];
>> >>
>> >> On Sat, May 7, 2022 at 11:28 AM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>> >> >
>> >> > Having a problem understanding the "for" function. Heck, I'm having a problem understanding programs where all the variables are calculated at compile time and not runtime.
>> >> >
>> >> > I have an array of 11 svg strings named "svgArray" indexed as 0-10. This one is from index 4:
>> >> >
>> >> > ["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
>> >> >
>> >> > svg strings can be converted to a point array using the pathbuilder library function svgPoints(). The above string is converted into this:
>> >> >
>> >> > [[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
>> >> >
>> >> > But ...
>> >> >
>> >> > I would like to create an indexed array of the points named "pathArray" to match each one in the "svgArray". This means I have to loop through the "svgArray", convert the current one to a point array using the svgPoints() function then append it to the "pathArray" being generated.
>> >> >
>> >> > How can I do that so I can use the array of point arrays throughout the rest of the scad program?
>> >> >
>> >> >
>> >> > _______________________________________________
>> >> > OpenSCAD mailing list
>> >> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>> >> _______________________________________________
>> >> OpenSCAD mailing list
>> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
>> >
>> > _______________________________________________
>> > OpenSCAD mailing list
>> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>> _______________________________________________
>> OpenSCAD mailing list
>> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
JW
Joe Weinpert
Sun, May 8, 2022 4:33 PM
Yep ... I gotta get used to the fact that in openSCAD the *for *loop is not
a function.
On Sat, May 7, 2022 at 3:27 PM Hans L thehans@gmail.com wrote:
So, what you are saying is the brackets with for are only used when
making an array (list) of something, correct?
The brackets make the item a list, just like in the example [1,2,3].
Without the brackets it's just like a bunch of numbers, like writing
1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
5,6,7] if you want some additional items in your list. Or
[1,2,3,for(...),5,6,if (condition) 19].
On Sat, May 7, 2022 at 1:08 PM Joe Weinpert joe.weinpert@gmail.com
Seems to be working. Thanks! What is the purpose of the brackets
You would do something like this, if I'm understanding your problem
pathArray = [for(element = svgArray) svgPoints(element)];
On Sat, May 7, 2022 at 11:28 AM Joe Weinpert joe.weinpert@gmail.com
Having a problem understanding the "for" function. Heck, I'm
having a problem understanding programs where all the variables are
calculated at compile time and not runtime.
I have an array of 11 svg strings named "svgArray" indexed as
0-10. This one is from index 4:
["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l
4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
svg strings can be converted to a point array using the
pathbuilder library function svgPoints(). The above string is converted
into this:
[[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634],
[59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327,
12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659],
[60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915,
8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
But ...
I would like to create an indexed array of the points named
"pathArray" to match each one in the "svgArray". This means I have to loop
through the "svgArray", convert the current one to a point array using the
svgPoints() function then append it to the "pathArray" being generated.
How can I do that so I can use the array of point arrays
throughout the rest of the scad program?
Yep ... I gotta get used to the fact that in openSCAD the *for *loop is not
a function.
On Sat, May 7, 2022 at 3:27 PM Hans L <thehans@gmail.com> wrote:
> Using "for" inside brackets is a form of list comprehension:
> https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/List_Comprehensions
> In that case "for" is part of an *expression*.
>
> Outside of brackets, "for" is also defined, but in that case it is a
> builtin *module* (it can generate geometry but does not return a
> value)
>
> https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Conditional_and_Iterator_Functions#For_Loop
>
> Neither are technically "functions", just to be clear (since you
> called it such in your original post)
>
> On Sat, May 7, 2022 at 12:25 PM Joe Weinpert <joe.weinpert@gmail.com>
> wrote:
> >
> > So, what you are saying is the brackets with for are only used when
> making an array (list) of something, correct?
> >
> >
> > On Sat, May 7, 2022 at 1:18 PM Adrian Mariano <avm4@cornell.edu> wrote:
> >>
> >> The brackets make the item a list, just like in the example [1,2,3].
> >> Without the brackets it's just like a bunch of numbers, like writing
> >> 1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
> >> 5,6,7] if you want some additional items in your list. Or
> >> [1,2,3,for(...),5,6,if (condition) 19].
> >>
> >> On Sat, May 7, 2022 at 1:08 PM Joe Weinpert <joe.weinpert@gmail.com>
> wrote:
> >> >
> >> > Seems to be working. Thanks! What is the purpose of the brackets
> in openSCAD?
> >> >
> >> > On Sat, May 7, 2022 at 12:42 PM Hans L <thehans@gmail.com> wrote:
> >> >>
> >> >> You would do something like this, if I'm understanding your problem
> correctly:
> >> >> pathArray = [for(element = svgArray) svgPoints(element)];
> >> >>
> >> >> On Sat, May 7, 2022 at 11:28 AM Joe Weinpert <joe.weinpert@gmail.com>
> wrote:
> >> >> >
> >> >> > Having a problem understanding the "for" function. Heck, I'm
> having a problem understanding programs where all the variables are
> calculated at compile time and not runtime.
> >> >> >
> >> >> > I have an array of 11 svg strings named "svgArray" indexed as
> 0-10. This one is from index 4:
> >> >> >
> >> >> > ["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l
> 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
> >> >> >
> >> >> > svg strings can be converted to a point array using the
> pathbuilder library function svgPoints(). The above string is converted
> into this:
> >> >> >
> >> >> > [[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634],
> [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327,
> 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659],
> [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915,
> 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
> >> >> >
> >> >> > But ...
> >> >> >
> >> >> > I would like to create an indexed array of the points named
> "pathArray" to match each one in the "svgArray". This means I have to loop
> through the "svgArray", convert the current one to a point array using the
> svgPoints() function then append it to the "pathArray" being generated.
> >> >> >
> >> >> > How can I do that so I can use the array of point arrays
> throughout the rest of the scad program?
> >> >> >
> >> >> >
> >> >> > _______________________________________________
> >> >> > OpenSCAD mailing list
> >> >> > To unsubscribe send an email to discuss-leave@lists.openscad.org
> >> >> _______________________________________________
> >> >> OpenSCAD mailing list
> >> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
> >> >
> >> > _______________________________________________
> >> > OpenSCAD mailing list
> >> > To unsubscribe send an email to discuss-leave@lists.openscad.org
> >> _______________________________________________
> >> OpenSCAD mailing list
> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
> >
> > _______________________________________________
> > OpenSCAD mailing list
> > To unsubscribe send an email to discuss-leave@lists.openscad.org
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
HL
Hans L
Sun, May 8, 2022 8:31 PM
It's not a function in most languages.
On Sun, May 8, 2022 at 11:34 AM Joe Weinpert joe.weinpert@gmail.com wrote:
Yep ... I gotta get used to the fact that in openSCAD the for loop is not a function.
On Sat, May 7, 2022 at 3:27 PM Hans L thehans@gmail.com wrote:
Using "for" inside brackets is a form of list comprehension:
https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/List_Comprehensions
In that case "for" is part of an expression.
Outside of brackets, "for" is also defined, but in that case it is a
builtin module (it can generate geometry but does not return a
value)
https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Conditional_and_Iterator_Functions#For_Loop
Neither are technically "functions", just to be clear (since you
called it such in your original post)
On Sat, May 7, 2022 at 12:25 PM Joe Weinpert joe.weinpert@gmail.com wrote:
So, what you are saying is the brackets with for are only used when making an array (list) of something, correct?
On Sat, May 7, 2022 at 1:18 PM Adrian Mariano avm4@cornell.edu wrote:
The brackets make the item a list, just like in the example [1,2,3].
Without the brackets it's just like a bunch of numbers, like writing
1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
5,6,7] if you want some additional items in your list. Or
[1,2,3,for(...),5,6,if (condition) 19].
On Sat, May 7, 2022 at 1:08 PM Joe Weinpert joe.weinpert@gmail.com wrote:
Seems to be working. Thanks! What is the purpose of the brackets in openSCAD?
On Sat, May 7, 2022 at 12:42 PM Hans L thehans@gmail.com wrote:
You would do something like this, if I'm understanding your problem correctly:
pathArray = [for(element = svgArray) svgPoints(element)];
On Sat, May 7, 2022 at 11:28 AM Joe Weinpert joe.weinpert@gmail.com wrote:
Having a problem understanding the "for" function. Heck, I'm having a problem understanding programs where all the variables are calculated at compile time and not runtime.
I have an array of 11 svg strings named "svgArray" indexed as 0-10. This one is from index 4:
["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
svg strings can be converted to a point array using the pathbuilder library function svgPoints(). The above string is converted into this:
[[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
But ...
I would like to create an indexed array of the points named "pathArray" to match each one in the "svgArray". This means I have to loop through the "svgArray", convert the current one to a point array using the svgPoints() function then append it to the "pathArray" being generated.
How can I do that so I can use the array of point arrays throughout the rest of the scad program?
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It's not a function in most languages.
On Sun, May 8, 2022 at 11:34 AM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>
> Yep ... I gotta get used to the fact that in openSCAD the for loop is not a function.
>
>
> On Sat, May 7, 2022 at 3:27 PM Hans L <thehans@gmail.com> wrote:
>>
>> Using "for" inside brackets is a form of list comprehension:
>> https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/List_Comprehensions
>> In that case "for" is part of an *expression*.
>>
>> Outside of brackets, "for" is also defined, but in that case it is a
>> builtin *module* (it can generate geometry but does not return a
>> value)
>> https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Conditional_and_Iterator_Functions#For_Loop
>>
>> Neither are technically "functions", just to be clear (since you
>> called it such in your original post)
>>
>> On Sat, May 7, 2022 at 12:25 PM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>> >
>> > So, what you are saying is the brackets with for are only used when making an array (list) of something, correct?
>> >
>> >
>> > On Sat, May 7, 2022 at 1:18 PM Adrian Mariano <avm4@cornell.edu> wrote:
>> >>
>> >> The brackets make the item a list, just like in the example [1,2,3].
>> >> Without the brackets it's just like a bunch of numbers, like writing
>> >> 1,2,3. It's the same with for. You can also write [1,2,3,for(.....),
>> >> 5,6,7] if you want some additional items in your list. Or
>> >> [1,2,3,for(...),5,6,if (condition) 19].
>> >>
>> >> On Sat, May 7, 2022 at 1:08 PM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>> >> >
>> >> > Seems to be working. Thanks! What is the purpose of the brackets in openSCAD?
>> >> >
>> >> > On Sat, May 7, 2022 at 12:42 PM Hans L <thehans@gmail.com> wrote:
>> >> >>
>> >> >> You would do something like this, if I'm understanding your problem correctly:
>> >> >> pathArray = [for(element = svgArray) svgPoints(element)];
>> >> >>
>> >> >> On Sat, May 7, 2022 at 11:28 AM Joe Weinpert <joe.weinpert@gmail.com> wrote:
>> >> >> >
>> >> >> > Having a problem understanding the "for" function. Heck, I'm having a problem understanding programs where all the variables are calculated at compile time and not runtime.
>> >> >> >
>> >> >> > I have an array of 11 svg strings named "svgArray" indexed as 0-10. This one is from index 4:
>> >> >> >
>> >> >> > ["m 57.694281,5.80572 q 2.90284,7.25713 2.90284,8.70856 h 2.54 l 4.35434,-0.36285 v -5.44286 l -0.36288,-1.81429 h -2.54001 z"]
>> >> >> >
>> >> >> > svg strings can be converted to a point array using the pathbuilder library function svgPoints(). The above string is converted into this:
>> >> >> >
>> >> >> > [[57.6943, 5.80572], [58.2458, 7.19909], [58.7393, 8.47634], [59.1747, 9.63748], [59.5521, 10.6825], [59.8714, 11.6114], [60.1327, 12.4242], [60.3359, 13.1209], [60.481, 13.7015], [60.5681, 14.1659], [60.5971, 14.5143], [63.1371, 14.5143], [67.4915, 14.1514], [67.4915, 8.70857], [67.1286, 6.89428], [64.5886, 6.89428]]
>> >> >> >
>> >> >> > But ...
>> >> >> >
>> >> >> > I would like to create an indexed array of the points named "pathArray" to match each one in the "svgArray". This means I have to loop through the "svgArray", convert the current one to a point array using the svgPoints() function then append it to the "pathArray" being generated.
>> >> >> >
>> >> >> > How can I do that so I can use the array of point arrays throughout the rest of the scad program?
>> >> >> >
>> >> >> >
>> >> >> > _______________________________________________
>> >> >> > OpenSCAD mailing list
>> >> >> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>> >> >> _______________________________________________
>> >> >> OpenSCAD mailing list
>> >> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
>> >> >
>> >> > _______________________________________________
>> >> > OpenSCAD mailing list
>> >> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>> >> _______________________________________________
>> >> OpenSCAD mailing list
>> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
>> >
>> > _______________________________________________
>> > OpenSCAD mailing list
>> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>> _______________________________________________
>> OpenSCAD mailing list
>> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
