Feat transform svg

[Rucki]

adding vector transformations like translate, scale and rotate of especially svg paths and other vector types

[Rucki]

Please merge it, it is necessary for transforming the svg path.
It fixes #375 and #807

[fuunnx]

Hi ! I was wondering if there was svg support for pdfMake then I saw you pull request. Thanks for doing it !

Now that I'm here, I find the API not declarative enough comparing to the pdfMake API, and too far from the svg one.
A better alternative would be to contain those transformations on the element being transformed instead of separate instructions :

As requested in #807

{ type: 'rect', x: 150, y: 200, w: 150, h: 50, rotate:45, translate: {x: 10, y: 1}, scale: 1 }

However order of transforms do matters so maybe something like that would do the job:

{ 
  type: 'rect', 
  x: 150,
  y: 200,
  w: 150,
  h: 50,
  transform(s): [
    {translate: {x: 10, y: 1}},
    {rotate: 45},
    {scale: 1},
  ],
}

Which is close to the svg API transform="translate(10, 1) scale(-1, 1)"

And if it is needed to apply the same operations to multiple elements maybe introduce a node of type 'group' like the <g> node in svg ?

Last point, I we want a better svg support maybe introduce 2 other transforms : skew (and skewX and skewY) and matrix. Skew is not implemented by pdfkit but there is a generic transform method that can take any matrix, and the matrices for skew are available here : https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/transform

[MadhuJayaram]

Any idea when this SVG transformation functions will be available to use?

[MadhuJayaram]

does this allow SVG element to be passed in directly as is or do we need to manually build it to make it compatible with pdfmake?

[marcusy3k]

I wish the feature is available too, so far I just know we could do the undocumented way as below:

{ canvas : [ { type: 'path', d: 'M 10 10 l 100 0 l 0 100 l -100 0 Z' } ] }

[j-funk]

Curious why this was never merged? Looks like it was a large improvement on existing functionality despite not being close to the existing APIs as reviewers comments.