3D mesh in the bottom right of the canvas

Questions
1

Hi everybody,

I don’t know if anybody’s still working but maybe will I be lucky.

I want to draw a mesh in the bottom right of the canvas facing the camera at any time and in front of all other meshes. I don’t want use the 2D Gui objects because i need 3D features.

I first tried to use the viewports but i don’t know how to see ONLY the concerned mesh and not the others.

The beginning of my playground is here https://playground.babylonjs.com/#Q88D2K#1 but i don’t know how to do that.

If anybody can help me.

Thanks,

Boris

PS : happy new year to all the forum

2

I think 2 cameras and 2 viewports could to the trick.
Use the same layerMask for the second camera and the desired mesh - In-Depth layerMask | Babylon.js Documentation
Let me know if you’ll need more help :slight_smile:

1 Like
3

Here’s a new playground.

There’s still one issue

  • the mesh is not in the bottom right of the canvas. the bottom right angle of my mesh should be in the bottom right.
4

Do you mean the small gap here or something else?

image
image644×560 16.8 KB

5

Yes, i don’t know how to calculate the exacr position of the camera which certainly depends on the size of the mesh

6

I think reading a bit on how camera projections work might be useful to work out how to calculate the camera’s parameters :slight_smile:

http://www.cse.psu.edu/~rtc12/CSE486/lecture12.pdf

1 Like
7

Hello @bvaisman just checking in, do you have any more questions about this? :slight_smile:

8

Hello @carolhmj

No, you’re right, i have to think a little bit more about the problem. I will close the question.

1 Like