How to embed graphics engine (eg., Irrlicht) into wx?

[kornerr]

I'm using Irrlicht. And I want to create a map editor. But I don't know how to embed Irrlicht into wxWidgets. Any clues?
Thanks.

[upCASE]

Hi!
Although I didn't try it or even havin ever worked with Irrlicht, I found this
irr::SIrrlichtCreationParameters::WindowId
in the docs.

If this is set to a value other than 0, the Irrlicht Engine will be created in an already existing window. For windows, set this to the HWND of the window you want

So I suppose it might work if you create the GUI and wxApp as usual and tell Irrlicht to use one of your wxWindows (like a wxPanel). I'm not really sure what Itllicht would expect on other platforms, but you can get the HWND of a wxWindow with wxWindow::GetHandle().
Use createDeviceEx() to create Irrlicht.

[upCASE]

BTW: This seems to be more or less this way of doing it ->
http://irrlicht.sourceforge.net/tut014.html

[upCASE]

A small update: I just tried it and it works charming. The problem to solve was where to call IrrlichtDevice::run(). I therefor created a derived wxPanel that would be use as the window for Irrlicht and implemented a OnIdle event handler and called it from there. After doing all needed drawing I simply call wxIdleEvent::RequestMore() to keep it "running".

[kornerr]

Can you, please, show me the code?

[upCASE]

Here's the code for my wxPanel.

IrrlichScene.h

Code: Select all

#include <wx/wx.h>

#include <irrlicht.h>
using namespace irr;

class IrrlichtScene :
	public wxPanel
{
	irr::IrrlichtDevice* device;
	irr::scene::ISceneManager* smgr;
	video::IVideoDriver* driver;
public:
	IrrlichtScene(wxWindow* parent,wxSize s);
	~IrrlichtScene(void);

	void OnIdle(wxIdleEvent& e);
	DECLARE_EVENT_TABLE()
};

IrrlichtScene.cpp

Code: Select all

#include "IrrlichtScene.h"

BEGIN_EVENT_TABLE(IrrlichtScene, wxPanel)
	EVT_IDLE(IrrlichtScene::OnIdle)
END_EVENT_TABLE()

IrrlichtScene::IrrlichtScene(wxWindow* parent,wxSize s)
:wxPanel(parent,-1,wxDefaultPosition,s)
{
	irr::SIrrlichtCreationParameters param;
	
	param.WindowId = (irr::s32)(HWND)this->GetHandle();
	param.DriverType = video::EDT_DIRECT3D9 ;

	device = irr::createDeviceEx(param);

	smgr = device->getSceneManager();
	driver = device->getVideoDriver();

	scene::ICameraSceneNode* cam = smgr->addCameraSceneNode();
	cam->setTarget(core::vector3df(0,0,0));

	scene::ISceneNodeAnimator* anim =
	   smgr->createFlyCircleAnimator(core::vector3df(0,10,0), 30.0f);
	cam->addAnimator(anim);
	anim->drop();

	scene::ISceneNode* cube = smgr->addCubeSceneNode(25);
	cube->setMaterialFlag(video::EMF_LIGHTING, false);
	
	cube->setMaterialTexture(0, driver->getTexture("media/rockwall.bmp"));

	smgr->addSkyBoxSceneNode(
	driver->getTexture("media/irrlicht2_up.jpg"),
	driver->getTexture("media/irrlicht2_dn.jpg"),
	driver->getTexture("media/irrlicht2_lf.jpg"),
	driver->getTexture("media/irrlicht2_rt.jpg"),
	driver->getTexture("media/irrlicht2_ft.jpg"),
	driver->getTexture("media/irrlicht2_bk.jpg"));

}

void IrrlichtScene::OnIdle(wxIdleEvent& e)
{
	device->run();
	driver->beginScene(true, true, 0);
	smgr->drawAll();
	driver->endScene();

	e.RequestMore();
}

This shows the same animantion as the sample in the tutorial I mentioned. Note that I never worked with Irrlicht before and thus there may be errors in my code. Still, it works charming for me and even changing the renderer works.
There is one thing though: I had to pass the wxPanel size so that the window size is set before the scene is created. If the window resizes you'll have to tell Irrlicht about that. Simply put: I didn't know how to do this

[kornerr]

Unfortunately, it doesn't work under Linux.
Anyone tried that under Linux (and is able to show full workable code)?
Thanks.

[kornerr]

Well, may be anyone can tell me HOW is embedding work in wx(GTK)? I mean, what should be accomplished in order to make smth external work inside wx(GTK)?
Thanks.

[mispunt]

Did you change the driver type? The code of upCASE is using video::EDT_DIRECT3D9, but you should use the OPENGL thing (look in the documentation of Irrlicht...)

[kornerr]

Of course =)
Irrlicht's doc don't say anything about wxGTK

[yablebab]

check it out:

http://irrlicht.sourceforge.net/phpBB2/ ... =wxwidgets

this works beautifully

=)

[kornerr]

I saw it already. It doesn't work for me.
Can you provide a workable demo which will work with wxGTK (under Linux, I mean).
Thanks.