Problem with a custom scene node

Manawenuz · Post by **Manawenuz** » Fri Dec 18, 2009 8:07 pm

Hello,

I am trying to make a custom scene node, and I would like to texture it. But no way, it just doesn't work. Here is the code:

Code: Select all

class CrosshairSceneNode : public ISceneNode {
protected:
	aabbox3d<f32> Box;
	S3DVertex Vertices[4];
	SMaterial Material;
public:
	CrosshairSceneNode(ISceneNode* parent, ISceneManager* mgr, s32 id) : ISceneNode(parent, mgr, id) {
		Material.Wireframe = false;
		Material.Lighting = false;
		SColor col(0,255,255,255);
		Vertices[0] = S3DVertex(-1,1,5, 1,1,0, col, 0, 1);
		Vertices[1] = S3DVertex(1,1,5, 1,0,0, col, 1, 1);
		Vertices[2] = S3DVertex(1,-1,5, 0,1,1, col, 1, 0);
		Vertices[3] = S3DVertex(-1,-1,5, 0,0,1, col, 0, 0);
		
		this->setAutomaticCulling(EAC_OFF);
		Box.reset(Vertices[0].Pos);
		for (s32 i=1; i<4; ++i)
			Box.addInternalPoint(Vertices[i].Pos);
	}
	
	virtual void OnRegisterSceneNode()
	{
		if (IsVisible)
			SceneManager->registerNodeForRendering(this);
		
		ISceneNode::OnRegisterSceneNode();
	}
	
	virtual void render()
	{
		u16 indices[] = {0,1,2, 0,2,3};
		IVideoDriver* driver = SceneManager->getVideoDriver();
		
		driver->setMaterial(Material);
		driver->setTransform(ETS_WORLD, AbsoluteTransformation);
		driver->drawIndexedTriangleList(&Vertices[0], 4, &indices[0], 2);
	}
	
	virtual const core::aabbox3d<f32>& getBoundingBox() const
	{
		return Box;
	}
	
	virtual u32 getMaterialCount() const
	{
		return 1;
	}
	
	virtual video::SMaterial& getMaterial(u32 i)
	{
		return Material;
	}
	
	void setMaterialTexture(u32 textureLayer, video::ITexture* texture) {
		if (textureLayer >= video::MATERIAL_MAX_TEXTURES)
			return;
		for (u32 i=0; i<getMaterialCount(); ++i)
			getMaterial(i).setTexture(textureLayer, texture);
	}
};

I've looked here, but doing the same for setMaterialTexture doesn't seem to be enough.

Could you help me? Thanks!

Escen · Post by **Escen** » Fri Dec 18, 2009 10:04 pm

You have made 2 indices[] = {0,1,2, 0,2,3} and ask to draw 4 , it may crash on that.
replace with:

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driver->drawIndexedTriangleList(&Vertices[0], 4, &indices[0], 2);

It should work applied as follow:

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video::ITexture *Tex1;
    Tex1=driver->getTexture("../../media/detailmap3.jpg");
    myNode->setMaterialTexture(0,Tex1);

Manawenuz · Post by **Manawenuz** » Sat Dec 19, 2009 3:52 pm

Thanks for the answer!!

Changing this line

Code: Select all

driver->drawIndexedTriangleList(&Vertices[0], 4, &indices[0], 2);

has solved display bug, but now I still have a big white square in front of me (no texture mapped). But I can see in the terminal that the texture (crosshair.png) has been loaded, even if type this

Code: Select all

video::ITexture *Tex1; 
    Tex1=driver->getTexture("../../media/detailmap3.jpg"); 
    myNode->setMaterialTexture(0,Tex1);

I have also tried billboards, but I have exactly the same problem.
I really don't know what to do...

BTW, I'd prefer using a custom scene node, unless you can rotate a billboard around the target axis of the camera

Manawenuz · Post by **Manawenuz** » Mon Dec 21, 2009 2:17 pm

Plz, UP!

CuteAlien · Post by **CuteAlien** » Mon Dec 21, 2009 2:44 pm

I miss the time right now to write an example around this to test it (note that you get more responses when you paste stuff which people can just compile without having to invest some work first). But check 2 things - do you have a camera and do you actually render the scene? That's often forgotten.

Escen · Post by **Escen** » Mon Dec 21, 2009 10:21 pm

This is your class applied in the basic CostumSceneNode example.
I tweak your Vertices a little-bit, but if it is still not working you have to give more information.

Code: Select all

#include <irrlicht.h>
#include <iostream>

using namespace irr;
using namespace scene;
using namespace video;
#ifdef _MSC_VER
#pragma comment(lib, "Irrlicht.lib")
#endif


class CrosshairSceneNode : public scene::ISceneNode
{
protected:
   core::aabbox3d<f32> Box;
   video::S3DVertex Vertices[4];
   video::SMaterial Material;
public:
   CrosshairSceneNode(ISceneNode* parent, ISceneManager* mgr, s32 id) : ISceneNode(parent, mgr, id) {
      Material.Wireframe = false;
      Material.Lighting = false;
      SColor col(0,255,255,255);
      Vertices[0] = S3DVertex(0,0,0, 0,0,0, col, 0, 1);
      Vertices[1] = S3DVertex(0,10,0, 0,1,0, col, 0, 0);
      Vertices[2] = S3DVertex(15,10,0, 1,1,0, col, 1, 0);
      Vertices[3] = S3DVertex(15,0,0, 1,0,0, col, 1, 1);
      this->setAutomaticCulling(EAC_OFF);
      Box.reset(Vertices[0].Pos);
      for (s32 i=1; i<4; ++i)
         Box.addInternalPoint(Vertices[i].Pos);
   }

   virtual void OnRegisterSceneNode()
   {
      if (IsVisible)
         SceneManager->registerNodeForRendering(this);

      ISceneNode::OnRegisterSceneNode();
   }

   virtual void render()
   {
       u16 indices[] = {0,1,3, 1,2,3};
      IVideoDriver* driver = SceneManager->getVideoDriver();

      driver->setMaterial(Material);
      driver->setTransform(ETS_WORLD, AbsoluteTransformation);
      driver->drawIndexedTriangleList(&Vertices[0], 4, &indices[0], 2);
   }

   virtual const core::aabbox3d<f32>& getBoundingBox() const
   {
      return Box;
   }

   virtual u32 getMaterialCount() const
   {
      return 1;
   }

   virtual video::SMaterial& getMaterial(u32 i)
   {
      return Material;
   }

   void setMaterialTexture(u32 textureLayer, video::ITexture* texture) {
      if (textureLayer >= video::MATERIAL_MAX_TEXTURES)
         return;
      for (u32 i=0; i<getMaterialCount(); ++i)
         getMaterial(i).setTexture(textureLayer, texture);
   }
};


int main()
{
	// let user select driver type

	video::E_DRIVER_TYPE driverType;

	printf("Please select the driver you want for this example:\n"\
		" (a) Direct3D 9.0c\n (b) Direct3D 8.1\n (c) OpenGL 1.5\n"\
		" (d) Software Renderer\n (e) Burning's Software Renderer\n"\
		" (f) NullDevice\n (otherKey) exit\n\n");

	char i;
	std::cin >> i;

	switch(i)
	{
		case 'a': driverType = video::EDT_DIRECT3D9;break;
		case 'b': driverType = video::EDT_DIRECT3D8;break;
		case 'c': driverType = video::EDT_OPENGL;   break;
		case 'd': driverType = video::EDT_SOFTWARE; break;
		case 'e': driverType = video::EDT_BURNINGSVIDEO;break;
		case 'f': driverType = video::EDT_NULL;     break;
		default: return 0;
	}

	// create device

	IrrlichtDevice *device = createDevice(driverType,
			core::dimension2d<u32>(640, 480), 16, false);

	if (device == 0)
		return 1; // could not create selected driver.

	// create engine and camera

	device->setWindowCaption(L"Custom Scene Node - Irrlicht Engine Demo");

	video::IVideoDriver* driver = device->getVideoDriver();
	scene::ISceneManager* smgr = device->getSceneManager();

        ICameraSceneNode* camera =smgr->addCameraSceneNodeFPS(0,50, 0.1, -1, 0, 1,false);
        camera->setPosition(core::vector3df(0,0,-40));


	//YOUR CLASS IS ABOUT TO FIRE HERE
	CrosshairSceneNode *myNode =
		new CrosshairSceneNode(smgr->getRootSceneNode(), smgr, 666);

    video::ITexture *Tex1;
    Tex1=driver->getTexture("../../media/detailmap3.jpg");
    myNode->setMaterialTexture(0,Tex1);

	myNode->drop();
	myNode = 0;
    //WOW that was amazing

	u32 frames=0;
	while(device->run())
	{
		driver->beginScene(true, true, video::SColor(0,100,100,100));

		smgr->drawAll();

		driver->endScene();
		if (++frames==100)
		{
			core::stringw str = L"Irrlicht Engine [";
			str += driver->getName();
			str += L"] FPS: ";
			str += (s32)driver->getFPS();

			device->setWindowCaption(str.c_str());
			frames=0;
		}
	}

	device->drop();

	return 0;
}

Manawenuz · Post by **Manawenuz** » Tue Dec 22, 2009 11:29 am

Thank you very much for your answer!
Is this working for you? For me it doesn't and I really don't understand why... I have a white rectangle in front of me, without a texture, whereas it is said to be loaded in the terminal.
I use OpenGL, I am under Mac OS X Snow Leopard, with Irrlicht v1.5.2-SVN...
I try with a newer version and I tell what happens

EDIT: Well, same problem with Irrlicht 1.6 (if you need to know, it is XCode 3.2.1)

CuteAlien · Post by **CuteAlien** » Tue Dec 22, 2009 11:59 am

Hm, above code is also working for me. Unfortunately I have no Mac to test it there :-(

Manawenuz · Post by **Manawenuz** » Tue Dec 22, 2009 1:20 pm

I am sad to announce you that it works on Ubuntu 9.10 (double boot).
So the problem is Mac OS X (I hoped I would never have to say it, but...)
If somebody has an idea about why it doesn't work...

Manawenuz · Post by **Manawenuz** » Tue Dec 22, 2009 2:16 pm

I am not sure of the answer, so I ask here:
According to you, should I create a new topic to deal with this mac-specific problem?

Escen · Post by **Escen** » Tue Dec 22, 2009 3:27 pm

Well... that's well done! lucky you..

Unfortunately I also have no Mac test it

A new topic will reach more Mac users, I think.
Maybe you can use the code from above and place a link to this topic.

Cheers