LightNode->setDebugDataVisible

etcaptor · Post by **etcaptor** » Tue Aug 17, 2004 12:20 pm

Hi all,
I try switch LightNode->setDebugDataVisible(true),
but cannot see Debug box. Someone knows how?
Thanks in advance.

SuryIIID · Post by **SuryIIID** » Sat Sep 11, 2004 1:18 pm

Well debugDataVisible(the AABB rendering) is only applied to the following sceneNodes :
CAnimatedMeshSceneNode,
CMeshSceneNode,
COctTreeSceneNode,
CParticleSystemSceneNode
in the CLightSceneNode the method is simply inherited from irr::scene::ISceneNode but setting debugDataVisible to true doesn't affect the rendering , well i guess Niko ommited this part since a light source isn't
actually a mesh or ParticleSysyem and it could be represented by a single vector for the position and other parameters depending of the light type cone direction ,fall off etc so in theory talking about a light's AABB is kinda unnatural IMHO , but in practice you see that sometimes you need to see a box around a light in order to get the idea of where it is actually in space , but as you can see you loose the information about the direction , range etc. A better representation would be a 3D arrow or something and a bounding sphere.

Anyway i appreciate your Irrlicht->Borland port(yeah i'm a Borland bitch:)) and i wanna return the favour as much as i can

Here is what i came up with so far :
in the void CLightSceneNode::render() [file CLightSceneNode.cpp (line 41)]
in the end of the function put this :

Code: Select all

 // for debug purposes only:
if (DebugDataVisible)
    {
        core::matrix4 mat ;
        mat.makeIdentity();

        mat.setTranslation(LightData.Position);
        driver->setTransform(video::ETS_WORLD, mat);
            	BBox.reset(core::vector3df(0,0,0));
                BBox.MaxEdge = core::vector3df(20,20,20);
                BBox.MinEdge = core::vector3df(-20,-20,-20) ;

	video::SMaterial m;
	m.Lighting = false;
	driver->setMaterial(m);
	driver->draw3DBox(BBox,      video::SColor0,255,255,255));
       }

Push compile button, Enjoy

etcaptor · Post by **etcaptor** » Sat Sep 11, 2004 8:12 pm

Hehe, sounds great. I'll try it.
Thanks for help, now I not feel lonely with C++Builder in this forum

Cheers!

etcaptor · Post by **etcaptor** » Sat Sep 11, 2004 10:22 pm

OK, that works!
Only
driver->draw3DBox(BBox,video::SColor (0,255,255,255));
must be instead
driver->draw3DBox(BBox, video::SColor0,255,255,255));
Sticky keyboard keys?

I still don't know whether in v.07 are directional lights included.
But after some experiments have tried this

For sphere light:

Code: Select all

//internal 3dbox for orientation of position /white/.
                BBox.MaxEdge = core::vector3df(20,20,20);
                BBox.MinEdge = core::vector3df(-20,-20,-20) ;
//additional external 3dbox for approximately range orientation /with color of this light/             
                float r = LightData.Radius;
                BBox.MaxEdge = core::vector3df(r,r,r);
                BBox.MinEdge = core::vector3df(-r,-r,-r) ;

Irrlicht have not any octahedron /sphere/ drawing functions, but it's possible to make it. At this time I'm so lazy for implementation of similar drawing functions

, but it's not so hard. Well, time will show - I hope some other user to make it instead me

SuryIIID · Post by **SuryIIID** » Sun Sep 12, 2004 7:19 am

Irrlicht have not any octahedron /sphere/ drawing functions, but it's possible to make it. At this time I'm so lazy for implementation of similar drawing functions , but it's not so hard. Well, time will show - I hope some other user to make it instead me

Well i'll try to add the following scene nodes to DX part of Irrlicht :

Paralelepiped(Box)
Cylinder
n-sided polygon
Sphere
Teapot
3D text
Torus

etcaptor · Post by **etcaptor** » Sun Sep 12, 2004 1:22 pm

Great! I'll be waiting!!!!