Thanks Will, do not worry it's already been solved, thanks again.
Regards.

Hi, has this error occurred to you?

https://www.facebook.com/photo.php?fbid=526968090976538&set=gm.347954225617699&type=3&ifg=1

Great!!

Hello Ivan, have not you contemplated the possibility of implementing Collision Bounds Convex Hull ?.
The Collision Bounds Triangle Mesh is easy to simulate with planes for concave surfaces or surfaces with holes, not convex surfaces.

set_gravity(obj, gravity)
Set the object's gravity.
Parameters:

Name Type Description
obj Object3D Object 3D
gravity number Positive object gravity

I've been looking at the api and gravity is actually implemented.
From my point of view (I am an amateur)
Advantages of b4w: gravity can affect a single object if I want, in BGE the entire scene is affected as it applies to the world.
We can interact in real time, in bge we can not, it is a baked animation.

Cons of b4w: It is only applied to an axis, I understand that it is the z axis since the parameter is a number, not a vector. In bge you can apply the forces in the 3 axes.
Could you correct me if you did not?

I'll try to make an example with Suzanne and b4w, see if I can.

Why you don't want to use blend4web (bullet) phisics? You also can control it using javascript code.

Hello Mikhail, for some reasons:
1. I am learning javascript.
2. In B4W we are missing (Triangle Mesh and Convex Hull), in BGE the physics is more real with more complex objects.
3. At this moment I feel more comfortable with python.

I have very clear that if the user should interact with the physical in the application I must use javascript, if it is only a visual simulation I can use python or javascript depending on the real thing I want to be the animation.
Regards.

Small example manipulating gravity.

I am very glad, Philip_Fong was very discouraged.
I'm glad it's moving forward.

Hi, you can make the material in blender internal with nodes to animate transparency. The texture requires 3 additional nodes to be seen in b4w.
The Texture node with the name of the texture.
The Vector / Mapping node, you can put the values ​​that I have put in Blend.
The Input / Geometry node, this node ensures that the texture is placed in place.
Take a look at the attached Blend, I hope it will be of your help.
Regards


Edited: I had not packed the texture.

Sorry I did not upload the blend.