3D Object click! help me

C++ coding using Panda3D
1

How I do “3d object click”? I’ve tried but i couldn’t…
Can you write a sample code?
pls help me :slight_smile:

2

You can actually find an example within the Panda3D manual :unamused::
Clicking on 3D Objects

3

“LPoint2f mpos = mouseWatcher->get_mouse();”
While the program is running, error gives

4

It would be easier to help you if you described the error.

5

the program stops working. program not gives error
can you write a sample code? plss

6

Hmm…Could you post your code, please?

7 

 
PandaFramework framework;
NodePath camera;
PT(MouseWatcher) mouseWatcher;
PT(CollisionRay) pickerRay;
WindowFramework *window;
CollisionTraverser myTraverser = CollisionTraverser("ctraverser");
PT(CollisionHandlerQueue) myHandler;
PT(CollisionNode) pickerNode;
PT(CollisionHandlerQueue) handlePickedObject;
NodePath pickerNP;
NodePath pickedObj;



 
void myFunction(){



   pickerRay->set_from_lens(window->get_camera(0), window->get_graphics_window()->get_pointer(0).get_x()
	   , window->get_graphics_window()->get_pointer(0).get_y());
  myTraverser.traverse(window->get_render()); 

   if(myHandler->get_num_entries() > 0)
   {
    myHandler->sort_entries();
    pickedObj = myHandler->get_entry(0)->get_into_node_path();
	pickedObj = pickedObj.find_net_tag("myObjectTag"); 

  
   }


	  

}

void mousee(const Event * theEvent, void * data) 
{ 
   myFunction();


}

int main(int argc, char **argv) {
    // Open a new window framework and set the title
    framework.open_framework(argc, argv);
    framework.set_window_title("My Panda3D Window");
   
    // Open the window
    window = framework.open_window();
    camera = window->get_camera_group(); // Get the camera and store it
     window->enable_keyboard(); 
window->setup_trackball();
pickerNode = new CollisionNode("mouseRay");
pickerNP = camera.attach_new_node (pickerNode);
pickerNode->set_from_collide_mask(GeomNode::get_default_collide_mask());
pickerRay = new CollisionRay();
pickerNode->add_solid(pickerRay);
myHandler = new CollisionHandlerQueue();
myTraverser.add_collider(pickerNP, myHandler);
framework.define_key("mouse1", "click", mousee, 0);

    // Load the environment model
    NodePath environ = window->load_model(framework.get_models(), "models/environment");
    environ.reparent_to(window->get_render());
    environ.set_scale(0.25 , 0.25, 0.25);
    environ.set_pos(-8, 42, 0);
  
    // Load our panda
    NodePath pandaActor = window->load_model(framework.get_models(), "panda-model");
    pandaActor.set_scale(0.005);
    pandaActor.reparent_to(window->get_render());
	pandaActor.set_tag("myObjectTag", "1");




    // Load the walk animation
    window->load_model(pandaActor, "panda-walk4");
    window->loop_animations(0);
 


    Thread *current_thread = Thread::get_current_thread(); 
   while (framework.do_frame(current_thread)) 
   { 
  
	  
   } 
    framework.close_framework();
    return (0);
}

how must I do?

8

I triyed it, no error found ! :slight_smile:
It’s run perfectly