Isometric images of nodes

[Jolesh]

Hej,
I am creating wikis for my mods and want to add pictures for my nodes. I don't want the normal side or top view aka. the texture files, but instead I want to add images like the ones in the inventory (isometric). Is there a (simple) way to get those? I guess the ones in the inventory are rendered and not saved anywhere.

So basically I want to do more or less the same thing as the minetest wiki and add images like this:

https://wiki.minetest.net/File:Dirt_with_Grass.png

Regards, Jolesh



PS: Sorry not sure if I chose the right category

[Skamiz Kazzarch]

I don't think there is a direct way to get the image as a file
But you can probably use the 'item_image' formspec element to display the node image on a clean background which is easily cropped out.
https://github.com/minetest/minetest/bl ... .txt#L2515

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### `item_image[<X>,<Y>;<W>,<H>;<item name>]`

* Show an inventory image of registered item/node

[LMD]

I implemented a CSM to do this for https://appgurueu.github.io/online_craftguide/. Needless to say it never made its way into the engine. You could look at tile.cpp to copy the CPU-side inventorycube rendering code. Otherwise you would have to simply render onto a cube using an isometric projection.

[Jolesh]

Hej,
thanks a lot. I made a command to show me the node.
It is not the best solution for extracting big amounts of nodes but works fine for the few I need.
Do you know if there is a way, to make <item name> a parameter so I can add it as a parameter to the command, so I don't have to change the node id in my mods source code?

@LMD Cool, would be nice to create them automatically. Where is the tile.cpp, in one of the github repros linked by Online Craftguide?

[Skamiz Kazzarch]

The function called by the chat command automatically receives the parameters as a second argument:
https://github.com/minetest/minetest/bl ... .txt#L8849

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        func = function(name, param),
        -- Called when command is run. Returns boolean success and text output.
        -- Special case: The help message is shown to the player if `func`
        -- returns false without a text output.

So you can do something like:

Code: Select all

"item_image[<X>,<Y>;<W>,<H>;" .. param .. "]"

[Jolesh]

Thanks a lot :)
I already did the parameter for the command but couldn't figure the syntax out for the item_image.
Now it is all working nice and smoothly.

[bzt]

Hi,

I've implemented this in mtsedit. It requires two steps:

1. in game, use the dependency-free mtsedit mod, and in the chat type "/mtsedit imgs", this will save all the texture data to a csv file (will include data for all nodes depending what game / other mods are active, so it works with MTG and MCL too).

2. then outside of the game, run "mtsedit -t thesavedfile.csv", and it will parse that data, find the texture images and generate an isometric PNG for each node.

It isn't perfect though, it does not support all the texture features (like rotated mirrored images etc.), but works most of the time pretty well. Here's a list of PNG images I generated. Example:

For nodes that looks different from different angles (like a stair), it generates an image like this:


Cheers,
bzt

[Jolesh]

Hej bzt.
That's quite cool and useful. And 32x32 is exactly the resolution i was looking for, nice. Thanks a lot :)

Cheers, Jolesh

PS: The schemetics look also quite interesting, but the program keeps crashing on me right after start up, I guess I missed sth.

[andel1419]

Is it possible to add in 64x64 resolution?

[Jolesh]

Hej,
I just noticed that overlays don't work. So for example: "default_dirt.png^waste_materials_waste_pieces.png" gives me normal dirt. And my nodebox nodes don't have any images at all.
Is that normal/is there a fix?
Regards, Jolesh

[bzt]

PS: The schemetics look also quite interesting, but the program keeps crashing on me right after start up, I guess I missed sth.

It's not crashing, it's just your Windows closes the console right away (run in CMD.EXE, and then you'll see it's output, it won't close). This is primarily a command line tool to mass convert schematics into MTS format from batch files.

To get the GUI, you should use the right-click menu's "Open with" "mtsedit.exe" option on a schematic file in explorer (not just .mts, could be Minecraft .schematic or Magicavoxel .vox or Qubicle .qb or WorldEdit .we, whatever).

Is it possible to add in 64x64 resolution?

Well, it is possible, but for now it only generates 32 x 32 images as that's what the editor and the preview generator uses.

I just noticed that overlays don't work. So for example: "default_dirt.png^waste_materials_waste_pieces.png" gives me normal dirt.

Yes, as I've mentioned it isn't perfect, it does not support all the texture features. This was enough for me, and nobody asked for this either, so I haven't implemented `^` yet. The `|` overlay operator does work though.

Cheers,
bzt

[Hybrid Dog]

It should be possible to use SVG to make the browser show an isometric shaded image of a node with arbitrary zoom and nearest neighbour sampling of the textures (optionally with anti-aliasing) given the 16x16 textures.
It should also be possible to modify and compile Luanti to WebAssembly and run Luanti in the browser to render the inventory images.