Draw planes on 3D mesh using mouse drag

Questions
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1

Hi

Is it possible to draw planes (rectangles) directly on a 3D glb model of a building in real time?
I want to click on 3D model and drag it to another point of the model in order to draw the rectangle (Plane).

Any suggestions or code examples?

2

Hi!
Maybe this SO question will give you some ideas:

1 Like
3

@prisoner849 ell I don’t want my plane to be exactly attached to the 3D mesh
It can float in the air.

I actually want to draw rectangle(plane) using mouse drag just like we do in the Paint application of windows.

The only difference is now it is a 3D space.

4

There you are, for more ideas:

5

First of all I really appreciate you helping me with the issues that I had in drawing planes on 3D model.

But I am facing yet another issue which has to do with drawing rectangles on certain objects in my 3D model. I would like to be able to draw rectangle perfectly aligned with objects.
Please see the following
This is our 3D model in glb format.

image
image1160×785 201 KB

I am trying to draw rectangles over certain objects that are not necessarily aligned with the axes of 3D space.

image
image1613×835 307 KB

My problem is that the rectangle is never aligned with our objects hence I have to rotate and resize every time which is a difficult thing to do.

I would like to be able to rotate the model and place it in a certain way and draw the rectangles perfectly aligned with the object without having to resize and rotate.

6

@Ujwaldeep_Singh did you ever figure out how to draw with rotation?