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francis789

Move paths to absolute position

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I'm trying to move paths created in a Illustrator to a given position.

In the codePen, I move the group, then morph the balloon and move the stars.

 

The 2 targets are positioned at 100,300 and 300,300 (in pixels) in Illustrator.

 

I've tried a variety of techniques but none seem to work...

See the Pen LdMeKj?editors=1111 by fvila (@fvila) on CodePen

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Working with SVG coordinates isn't really anything like normal DOM positioning.

getBBox() helps in basic setups like you are using. getBBox() returns the x, y, width, and height of an element.

Below is a very rudimentary application

 

See the Pen mxaKpv by GreenSock (@GreenSock) on CodePen

 

 

The catch is the getBBox() returns values that ignore any additional transforms that were applied.

Perhaps some of the other guys can point you to some more resources but below is a demo from @OSUblake that may help and a link to another thread packed with some other tips about SVG and getBBox(). 

 

 

 

See the Pen ZQqavM?editors=0010 by osublake (@osublake) on CodePen

 

 

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Hi Carl,

Awesome, you actually debugged my code!

Yes, I have extra transformations that I'll have to reverse...

I'll try something I've just read about:

clearProps:"scale"
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Hi @francis789

 

There's no absolute or relative positioning in SVG. That's for HTML. Everything starts at the 0,0 coordinate of the parent SVG's canvas. 

 

You should remove transforms from anything you want to animate as it might cause problems with scaling and rotation. You can remove transforms by ungrouping stuff in Illustrator. Once the transforms are removed, you can group your stuff back if you want.

 

<path id="star1" d="M87.07,76..." transform="translate(-26.98 -46.26)"/>

 

 

And read the post that Carl linked to. Magic!!!

 

See the Pen ZxVmyx by osublake (@osublake) on CodePen

 

 

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Hi @OSUblake and @Carl

I'm having some trouble with the recommendations I've been given in this page...

  • getBBox() seems to work fine in Codepen, but in my code I get "getBBox() is not a function". My object is a path, and the same message appears in FireFox and Chrome.
  • Ungroup and regroup in Illustrator? I've been using 2-3 levels of groups, attributing ids in Illustrator, adding in classes programmatically... Can I proceed as follows:
    • copy id in Illustrator
    • select items in group,
    • ungroup
    • group
    • paste id to new group
  • Or am I supposed to ungroup all groups and then recreate them all?
  • Do I have to do the above for all group levels?
  • Maybe the best recommendation is "stay away from SVG groups if you want to stay sane" ?
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Made some progress:

  • I was using getBBox()  with jQuery, not getElementById, which seems to work better
  • I've reduced the groups causing problems to Compound paths in Illustrator.

Now I have hopes that if I rewrite the code it will work...

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Regarding groups, it's not a problem. See this Stackoverflow question for different ways to get rid of transforms.

https://stackoverflow.com/questions/13329125/removing-transforms-in-svg-files

 

I thought Illustrator had an option to automatically apply transforms to paths, but I can't find it. Maybe @PointC can offer some tips. I know SVGO is popular, but you have to be careful about some of the settings as it might change too much stuff in your svg file.

https://jakearchibald.github.io/svgomg/

 

 

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Thanks @OSUblake, I'll look into the stackoverflow more thoroughly. About SVGOMG what I understood was that it was a way of reducing the size of the SVG file, can it help unmuddling position problems?

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SVGO helps reduce file size, but it can remove transforms according to this answer on Stackoverflow.

https://stackoverflow.com/a/47397118/2760155

 

Quote

The relevant options in this case are moveGroupAttrsToElems (SVGOMG: Move group attrs to elements) to move transform attributes from groups to path elements, plus convertPathData (SVGOMG: Round/rewrite paths) to flatten transform into d.

 

 

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5 hours ago, OSUblake said:

Maybe @PointC can offer some tips.

 

My biggest tips for taming the gremlins that reside in Adobe Illustrator's SVG Export would be convert to compound paths and always include a background rectangle that matches the same dimensions as your master SVG.

 

Take this simple example

waw3Lvo.png

 

If we leave them as rectangles, we get this for output:

<svg  xmlns="http://www.w3.org/2000/svg" width="600" height="300" viewBox="0 0 600 300">
  <rect width="600" height="300" fill="#000"/>
  <g id="boxes">
    <rect x="100" y="50" width="200" height="200" transform="translate(164.64 -97.49) rotate(45)" fill="#c1272d"/>
    <rect x="200" y="50" width="200" height="200" transform="translate(193.93 -168.2) rotate(45)" fill="#7ac943"/>
    <rect x="300" y="50" width="200" height="200" transform="translate(223.22 -238.91) rotate(45)" fill="#3fa9f5"/>
  </g>
</svg>

 

But if we convert them to compound paths, we get this:

<svg xmlns="http://www.w3.org/2000/svg" width="600" height="300" viewBox="0 0 600 300">
  <rect width="600" height="300" fill="#000"/>
  <g id="boxes">
    <path d="M200,291.42,58.58,150,200,8.58,341.42,150Z" fill="#c1272d"/>
    <path d="M300,291.42,158.58,150,300,8.58,441.42,150Z" fill="#7ac943"/>
    <path d="M400,291.42,258.58,150,400,8.58,541.42,150Z" fill="#3fa9f5"/>
  </g>
</svg>

 

I always recommend the use of a background rectangle so there are no coordinate surprises. If we remove that rectangle, we get this:

<svg xmlns="http://www.w3.org/2000/svg" width="482.84" height="282.84" viewBox="0 0 482.84 282.84">
  <g id="boxes">
    <path d="M200,291.42,58.58,150,200,8.58,341.42,150Z" transform="translate(-58.58 -8.58)" fill="#c1272d"/>
    <path d="M300,291.42,158.58,150,300,8.58,441.42,150Z" transform="translate(-58.58 -8.58)" fill="#7ac943"/>
    <path d="M400,291.42,258.58,150,400,8.58,541.42,150Z" transform="translate(-58.58 -8.58)" fill="#3fa9f5"/>
  </g>
</svg>

 

Even though these are compound paths, we now have transforms on them and our viewBox is not the 600x300 we were working with in AI. I think a lot of people assume the SVG will automatically be the same dimensions as your AI project, but that is not always the case. You can skip the background rectangle and still get the correct size if you choose to export the artboard or assets, but I don't care for that approach because you can't see the code before you export. I also find the code gets a bit more bloated by doing that.

 

One other thing that is available in AI should you be getting some strange coordinates is under the top menu: Object --> Transform --> Reset Bounding Box.

 

For my own personal workflow, I sometimes put all my groups stacked on top of each other at coordinates (0,0). I then use GSAP to move them to their starting positions. 

 

Happy tweening.

:)

 

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+1 for the background rect tip. I always seem to forget that and have to spend 15 minutes trying to figure out why all my coordinates are incorrect.

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I've forgotten that rectangle many times too.

 

One thing I've done to help my memory is set up a collection of templates for Illustrator that already have a background rectangle ready to go. I think it's one of those overlooked features of AI that really is quite helpful. All you do to create a template is File --> Save As Template. Then 'New From Template' instead of 'New' when you start a new project.

 

I have several using the SVG sizes I use most often. I drop in a background rectangle and some empty named layers for artwork. It'll also remember the palette and a lot of your other settings. I work on a fairly large screen so I was always increasing the thumbnail size in the layers panel options each time I started a new document. That too is remembered in a template. 

:)

 

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  • 7 months later...

Brilliant! To make it work, I imagine the bounding rectangle has to be positioned at 0,0 ?

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  • 2 months later...

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