How can combine two .wrl files ?

Hi!! I have two wrl files, one contains a robot and the other consists on a virtual world. I have to combine these two file in order that the robot navigate in the virtual world using 3D animation. Any help please ?

Answer 1

[Jan]

Hi Samia, There are 2 main methods how to combine robot and the environment scene: Using PROTO (EXTERNPROTO) mechanism and using Inline nodes, see VRML97 standard:

   http://www.web3d.org/documents/specifications/14772/V2.0/part1/concepts.html#4.8
   http://www.web3d.org/documents/specifications/14772/V2.0/part1/nodesRef.html#Inline

Inline nodes are useful when each robot part is defined in a separate file. PROTO allows you to export only those properties that you want to control from MATLAB/Simulink, leaving all other model properties internal to the robot model.

The Inline method is described here: https://www.mathworks.com/help/sl3d/import-vrml-models-from-cad-tools.html

(files in /rotating_pendulum subdirectory of the Simulink 3D Animation sl3d\sl3ddemos directory)

Examples of using PROTO:

Look at the vr_octavia_2cars.slx model - 2 cars are there modelled as EXTERNPROTOS, 2 cars instantiated in the main scene, the main scene can be very neat and understandable even when editing in a text editor:

   octavia_scene_lchg_2cars.wrl
   octavia_protos.wrl

With Best Regards,

Jan

[samia ABBOUD]

Hi Jan,

Thank you for your kind and quick answer. I will try to apply these two methods.

With best regards