Desired features

[ikonnow]

I would like to request a few features for the equirectangular-cubemap project which is awesome! Here is my take:

• Allow importing HDRI images
• Changing the projection size of the cube that the equirectangular image is projected on
• Enable exporting a single plane-texture of the cube, such as the floor

So thank you very much for the super tool, in fact the options it already has are great, it really only needs a little more to work perfectly for me.

[skuong]

hello
thank you for your request.

to make sure that I update it correctly, here is the list of what I will do:

1. Allow importing HDRI images.
2. Changing the projection size of the cube that the equirectangular image is projected on:
   currently we have 256, 512, 1024, and 2048.
   so I will add 4096 to the preset.
   I don't really understand though.
   I haven't work with 3D things for a while now so please correct me.
3. Enable exporting a single plane-texture of the cube, such as the floor:
   • please explain me more because currently, we can export each face individually like -y, +x

[ikonnow]

hello thank you for your request.

to make sure that I update it correctly, here is the list of what I will do:

1. Allow importing HDRI images.

2. Changing the projection size of the cube that the equirectangular image is projected on:
   currently we have 256, 512, 1024, and 2048.
   so I will add 4096 to the preset.
   I don't really understand though.
   I haven't work with 3D things for a while now so please correct me.

3. Enable exporting a single plane-texture of the cube, such as the floor:

   • please explain me more because currently, we can export each face individually like -y, +x

Yes, first of all thank you for the quick answer!

1. perfect!
2. the resolution is not the main problem, but 4k is nice. What i was talking about is basically a change of the size of the cube. It should cause a change of the projection.
   Desired result: Scale the cube down, by a value, the ground gets bigger / the projection of the HDRI is "bigger"
3. works already!

[ikonnow]

this image defines the point 2.

[ikonnow]

Hey, thank you very much for the updated version, with the 4k option, the fact that you have implemented this so quickly naturally reinforces my wish that the above-mentioned implementation will take place. That would be super cool! Thank you!

[skuong]

On my laptop, the 4k is so slow. Great to know it work for you.

Regarding the scale of the cube, I still learning about it.
I did some experiment and it does not seem to change (When all side of the cube are equal).
I think that the size or scale of the cube does not effect the trajectory of the projection.

What I can think of right now is to only change the size of a desired face and export it individually. This case we don't want all its faces.
Is that what you mean here?

Enable exporting a single plane-texture of the cube, such as the floor

[ikonnow]

On my laptop, the 4k is so slow. Great to know it work for you.

Regarding the scale of the cube, I still learning about it.
I did some experiment and it does not seem to change (When all side of the cube are equal).
I think that the size or scale of the cube does not effect the trajectory of the projection.

What I can think of right now is to only change the size of a desired face and export it individually. This case we don't want all its faces.
Is that what you mean here?

Enable exporting a single plane-texture of the cube, such as the floor

did you read this? https://webglfundamentals.org/webgl/lessons/zh_cn/webgl-skybox.html it might help to get some useful insights

[ikonnow]

From browsing through this: https://drakeor.com/2023/04/27/equirectangular-to-skybox-projection/
I think we wants to change is the radius of the equirectangular sphere so it's projection changes the size/way it influences the cube

[skuong]

Thank you for the resource. I will learn more.
This one will take some time since I'm currently busy finding job. xd