Drop mesh picked from imported .babylon file

[ramkrishna]

Hello All,

Thanks for your help you guys are making through this forum, this is my first question to this forum.

I am new to game programming and BabylonJS.

I want to create a program that can load 3d model, allows to edit that model by moving some of meshes to another location which will remain that position. Below are the things i have achieved till now. 

1. I have created program that can load 3d model in ".babylon" format.

2. I am able to select meshes and move them around.

But, i am not able drop mesh which i have selected, it is keep attached to mouse pointer. How can i achieve same. Please help.

Attached is the sample file generated from playground and here is the link to playground http://www.babylonjs-playground.com/ 

sample.zip

[ramkrishna]

Hello @Deltakosh and @Wingnut,

Please help on above question

[MarianG]

Hi @ramkrishna. Welcome on board.
Here is your playground: http://playground.babylonjs.com/#060K58
And here is a quick fix: http://playground.babylonjs.com/#060K58#1
The problem was line 43 and 51 where your variable camera is undefined. Use scene.activeCamera instead.

ps: Take a look at 
https://doc.babylonjs.com/how_to/meshbehavior.
https://www.babylonjs-playground.com/#9UFEBE
may it help you.

[ramkrishna]

Hello @MarianG,

 

Thanks for reply. Provided solution exactly full fill my requirements. But i have few questions regarding it as below.

 

1. Is it mandatory to define separate ground even in loaded models? how we can use existing ground of loaded scene?
2. How i can make sure my camera will always render my scene as it is designed. I mean in my case i should always looking at entrance of house and my scene should be look like i am actually look like i am standing in front of room.

Actually i am trying build model which will load .babylon models and render it as it is designed. Also, if he want to edit he can do so.

Thanks in advance.
 

[MarianG]

Hey, sory for late.
1. The ground is used only for moveing. See getGroundPosition functions from here http://playground.babylonjs.com/#UZ23UH#0
Because of this ground the objects move only on x and z axis. Now if you take a look at your playground, it doesn't use ground, (you build it but never use), so the objects can move in all the axis, but a little bit random. And
the short answer is yes. You can remove it. http://playground.babylonjs.com/#060K58#2 The scene will still work.
Or you can use ground from your scene. like here http://playground.babylonjs.com/#060K58#3.
2. More about how to set camera in scene, how to limit its moves and more, you'll find here: http://doc.babylonjs.com/babylon101/cameras.

[ramkrishna]

Hello @MarianG,

Thanks for reply.

I will go through your comments and update you accordingly.

[ramkrishna]

Hello @MarianG,

Sorry for delayed reply.

I am able to move meshes around scene. Now, when i export this code for local testing i get "index.html" and when i try to run it i get below error at scene.render.

babylon.js:1 Uncaught Error: No camera defined
    at E.render (babylon.js:1)
    at Edit.html:139
    at M._renderLoop (babylon.js:1)

Any suggestions on it?

Thanks 

[MarianG]

Auch, I don't know. Try to put createDefultCameraorLight outside of importMesh function. I'll check in few hours.

[MarianG]

Hey @ramkrishna. I just checked, and yes, it seems, with CreateDefaultCameraorLight at the begining, it works.

 

[ramkrishna]

Hello @MarianG,

 

Correct!! it worked.

Just one thought came into my mind, can we save changes made by us in model while playing around so that when we re-execute HTML+ JS which refer to model will always point to updated one?

Your comments please.

[MarianG]

Related to save, take a look at this

http://doc.babylonjs.com/api/classes/babylon.sceneserializer.

http://doc.babylonjs.com/resources/save_babylon
You can save the entire scene or a specific mesh.

[ramkrishna]

@MarianG,

Thank you!

I will try this approach and let you know.