In the SVN you find a plugin providing an editable image region (coded by Kay).

This is compatible with uni's image region. You can replace this in the image region plugin directory (for test only,

features:
- Double click launches the systems standard program for png- or svg-files. You may set that to your favorite editor, e.g. Windows Paint or inkscape.
- Context menu provides options to Import or Export images (no permanent link to the file name)
- Image is stored inside the sm-file, much like in the Picture Region
- Image is scaled to fit the region size while keeping aspect ratio (reset option to original size available in the context menu)
- Image file name (png or svg) can be specified in the image placeholder (invisible by default). Then
- if the file exists, region display is updated from file when recalculating
- if file does not exist, it is created based on current region contents
- Edit actions are performed using the specified file name
- Draw2D or Draw3D functions can directly be placed in the placeholder, thus you can hide the graphics commands completely by not displaying the input.
- Matrix data can be displayed as in uni's original version.

Edit process (you can only edit if the placeholder is empty)
- On double click, a temporary file is created if no file name is specified
- This file is sent to the image editor (based on system file type preferences)
- When you are done editing, just save the file and close the editor
- The modified file is read in
- Image is updated as soon as you leave the region.

Compared to Picture region it lacks the ability to be created by drag and drop or by pasting images from clipboard. Also, editing is not "in place" but in an external program.

I shall include this region in a portable SMath+Maxima version which is due for release soon.

Just to be clear: Best would be to edit in place with a decent tool set, possibly vector based. What we provide is a far approximation to this level of comfort.

Edited by user 16 May 2014 03:30:34(UTC)  | Reason: Not specified

Uni, could you please try the merged region? Just replace your dll by this one:

https://smath.info/svn/p...gion/bin/Debug/Image.dll

There is one difference which I am aware of: If the file referenced in the placeholder does not exist, your version just didn't show anything, while Kay's version asks the user if he wants to create a new image. This may be a matter of taste, we would not insist on having it that way.

Feel free to extend the functionality of the plugin. There is a bit of my code. I would be glad if you add something. Also you can change the behavior of the plugin if necessary.

The attached file shows severe performance problems of the modified image region. SMath freezes upon scrolling. This does not happen with the original version by uni. I informed Kay about this. Therefore, it is still early for release in the online gallery.

You may need to switch on the math regions in order to produce the images. The page, however, is also part of the interactive book where the images should be included in the distribution (Contents> Graphics> Plotting with Maxima> Examples for drawdf)

Edited by user 17 May 2014 03:11:19(UTC)  | Reason: Not specified

Hello,

I have a peculiar issue not being able to import svg files into the image region (it sticks to the empty .png after the import). I can copy image region with .svg from interactive workbook and it behaves as intended. If, however, I replace (import) svg in the region by a different svg file it does not resize.

Also .sm file attached fails to plot to svg as it is intended.

What version of Smath should I use with this image region? Are there any other dependencies? I am using windows 7 x64 and portable smath with maxima 0.97 build 5346

Thanks!

Edited by user 26 September 2014 18:14:08(UTC)  | Reason: Not specified

Thank you Martin,

However my goal is to import and work with .svg drawings - and this seems to be broken in my case. Unless I am doing something wrong (right click, import .svg does not work for me). Do you think it is a bug, or is it just my installation?

I found a work around though (that has some limitations):

0. specify working derictory
1. insert image region
3. name it "***.svg" - it will ask you if you want to create ***.svg in your working directory - OK

Note: after image is named "***.svg" it cannot be opened by double clicking

4. Delete image name (remove "***.svg)
5. Double click it to edit

Bug: image does not resize to fit the borders

Something does not seem to work as intended - likely tied to my Smath Studio install or hardware?

Here is the .sm workbook with all the steps I tried to correctly add .svg to image region. Svg files attached are referred to in the workbook.

Thanks!

Edited by user 26 September 2014 23:59:36(UTC)  | Reason: Not specified

Is image region development still active? After working with it for more than a year I have tried numerous ways of using it as a primary sketching tool in SMath. I use it for creating engineering calculation books.

Overall its great. There are two points that it can be improved on.

1. Use of file format that supports layers. PaintNET's .pdn does that and also has a light-weight native editor (PaintNET). Any other file format would be great as well - the idea here to be able to scribble on top of base layer and than to delete and modify your scribbles as necessary.

2. Implement a variable that allows for image rotation - quite often the graph or another directly linked image does not fit into the printable area unless it is rotated. Often it is too cumbersome to rotate original file by hand (if it is created dynamically).

What do you guys think?

I do not think we understand each other here, Jean. What I ask for is already 95% implemented in SMath Studio by developers of image region plugin. Insert the region, double click, edit the .png in editor of your choice.

The extra that I ask is to support additional file format with layers (great for sketching over existing drawing). Additionally I was hoping you could rotate the image imbedded by image region by say, specifying the value in degrees.

I believe the only unreasonable portion of my request is that there might not be a developer who has time or willingness to make those changes. And I can most definitely understand that.

Image region is one of the 5 SMath plugins I found MOST useful over 2 years of me using SMath.

_______________________________

Yes Alex, we understand each other but not completely.

Zoomable drawings can only be *.svg. Other stuff is "Photo zoom" style.
Smath supporting *.svg is useless from the start whereas Smath is not a graphic package.
You could not add a line directly except by transiting via Paint for instance. The other crappy point is like this: If something has been created from a matrix, it will keep the matrix all over its uncorrupted life. EXAMPLE: my Mandebrot, Biomorph were created from Mathcad image matrix, exposed in the Mathcad picture operator, saved *.PNG ... they open in Smath as they were created. My logo [blue ellipse on black that you may have seen in some Smath work sheet], this logo is a Mathcad ordinary 2D then not a bitmap, rather a Microsoft Metafile. It was transited via WinGrab, saved *.PNG, it opens in Smath but crappy stuff.

I have the Mathcad program to rotate a photo or an *.bmp. That same photo/bmp, I can downsample by 2 [1/2 size] via a little program. I can zoom up to 2 via fft/ifft padding but Smath does have 3D fft/ifft. The available fft/ifft is the Fourier stuff I have attached recently [few more are still missing].

An RGB image, i.e: *.bmp is conventionally an augmented matrix of the 3 grayscale R, G, B. It's peanut to separate the R,G,B in three nested matrices then appliy Euler rotation on the matrix, but here you are stuck again because Smath does not have the capability of plotting matrices and does not create an image from matrix.

Two more points in context:
1. If you have a 2D Smath plot [2 vectors], easy to rotate clockwise/trig.
Mutiply the vector plot by the trig rotate function V*f(θ) not the other way around,
it follows universal algebraic rule element wise. Same thing with 3D Euler rotation

2. I could but can't demo a little 'svg'. That is done in Mathcad, it needs to implement
De Casteljau 3 lines algorithm. I can rotate it as well. Not possible in Smath because Smath is not a scalar CAS except for the Smath quick plot of an entire function.

The wish list CAS + CAD lasted 10 years in the Mathsoft Collaboratory. As it looks, PTC have some convenient way of plugging some of their ProEngineer stuff in their Mathcad. It may be the route to your wish list. Be careful, downloading PTC Mathcad it is the crookery of the century. EXPLAIN: when you download it comes with "Artemis", Artemis is not a virus, just a fishing hooke. Artemis is a little code that can chain several web links. The purpose is to connect the victim to a another kind of web spy netwoork. The PTC Artemis is a triple link: the frist one is the Mathcad stuff, the 2nd is a web link to Costa Rica server . From this server is fishes for any and all information coming in/out of your box, hours used, clients address, ID card info, bank ... may be not the brand of the toilet paper. The 3rd link is the "TimeStamp" 30 days free trial. Then you are f...d with Artemis that apparently can't be removed from PC. Would you want PTC contacting your client from the back door. Your client stuff is surely private until his busness is well established.

Jean

Jean