ASE (ASCII Scene Export) loader for Irrlicht, need some help

[nieka]

Hi,

I'm working on a ASE (ASCII Scene Export) file format loader for Irrlicht.
It would be nice to import whole scenes directly from 3DSMax.

Unfortunately I can only get the debug boundingboxes to show up. Not the vertices or the textures. If anyone could help a bit with this it would be great!



This is the code that should do it:

Code: Select all

CASELoader::CASELoader(irr::scene::ISceneManager *smgr, char *filename)
{
	ASE_Scene *scene = ASE_loadFilename(filename);
	if(!scene){
		trace("ERROR loading ase file\n");
		return;
	}
	irr::video::IVideoDriver *driver = smgr->getVideoDriver();

	for(int i=0;i<scene->objectCount;i++)
	{
		ASE_GeomObject obj = scene->objs[i];
		ASE_Material mat = scene->materials[i];

		scene::SMesh *mesh = new scene::SMesh();
		scene::SMeshBuffer *mb = new scene::SMeshBuffer();
		for(int j=0;j<obj.mesh.vertexCount;j++)
		{	
			ASE_Vector3D asevec3d = obj.mesh.vertices[j];
			ASE_Vector3D asenormal3d = obj.mesh.vertex_normals[j];

			core::vector3df asevec(asevec3d.x,asevec3d.y,asevec3d.z);
			core::vector3df normal(asenormal3d.x,asenormal3d.y,asenormal3d.z);
			irr::video::S3DVertex s3dvertext(asevec, normal,
				video::SColor(255,255,255,255), core::vector2df(1.0f,1.0f));
			mb->Vertices.push_back(s3dvertext);
		}
		mb->recalculateBoundingBox();
		mb->Material.DiffuseColor.set(255,s32(mat.diffuse.r*255.0f),s32(mat.diffuse.g*255.0f),s32(mat.diffuse.b*255.0f));
		mb->Material.AmbientColor.set(255,s32(mat.ambient.r*255.0f),s32(mat.ambient.g*255.0f),s32(mat.ambient.b*255.0f));
		mesh->addMeshBuffer(mb);
		mesh->recalculateBoundingBox();
		scene::ISceneNode *node = smgr->addMeshSceneNode(mesh);
		node->setDebugDataVisible(true);

  	    wchar_t objname[100]; 
	    swprintf(objname,100,L"%S",obj.name);
   
		node->setName(objname);
		node->setRotation(node->getRotation()+core::vector3df(90.0f,0.0f,0.0f));
		//		node->setScale(core::vector3df(10.0f,10.0f,10.0f));
		node->setMaterialTexture(0,driver->getTexture(mat.diffuseMaterialMap.image_path));
		node->setVisible(true);
	}
}

You can download the whole project here:

http://213.189.20.120/~nieka/ASELoader.zip

[zola]

Nice, You're almost there.

This is what I see from the code

- meshbuffer vertices need proper texture coordinate settings
- meshbuffer need faces (indices)

I have been able to find the code for the inidces but the texture coordinates are something else! It would be nice if irrlicht had a function like this

drawIndexedTraingles(vector3df[] vertices, vector3df[] normals, s32[] uv, u32[] indices, u32 vertexCount, u32 indexCount);

... would make life much easyer

so, here's the index setting for the meshbuffer (You could insert this after the vertexloop...)

Code: Select all

for(int j=0; j<obj.mesh.faceCount;j++)
		{
			mb->Indices.push_back(obj.mesh.faces[j].vertex[0]);
			mb->Indices.push_back(obj.mesh.faces[j].vertex[1]);
			mb->Indices.push_back(obj.mesh.faces[j].vertex[2]);
		}

good luck.

[nieka]

Great thanx!

With the following code, it looks like this! Now only that texture coordinate thing. It seems that the textures already make the color now.

Code: Select all

CASELoader::CASELoader(irr::scene::ISceneManager *smgr, char *filename)
{
	ASE_Scene *scene = ASE_loadFilename(filename);
	if(!scene){
		trace("ERROR loading ase file\n");
		return;
	}
	irr::video::IVideoDriver *driver = smgr->getVideoDriver();

	for(int i=0;i<scene->objectCount;i++)
	{
		ASE_GeomObject obj = scene->objs[i];
		ASE_Material mat = scene->materials[i];

		scene::SMesh *mesh = new scene::SMesh();
		scene::SMeshBuffer *mb = new scene::SMeshBuffer();
		for(int j=0;j<obj.mesh.vertexCount;j++)
		{	
			ASE_Vector3D asevec3d = obj.mesh.vertices[j];
			ASE_Vector3D asenormal3d = obj.mesh.vertex_normals[j];

			core::vector3df asevec(asevec3d.x,asevec3d.y,asevec3d.z);
			core::vector3df normal(asenormal3d.x,asenormal3d.y,asenormal3d.z);
			irr::video::S3DVertex s3dvertext(asevec, normal,
				video::SColor(255,255,255,255), core::vector2df(1.0f,1.0f));
			mb->Vertices.push_back(s3dvertext);
		}
		for(j=0;j<obj.mesh.faceCount;j++) 
	   { 
       mb->Indices.push_back(obj.mesh.faces[j].vertex[0]); 
       mb->Indices.push_back(obj.mesh.faces[j].vertex[1]); 
       mb->Indices.push_back(obj.mesh.faces[j].vertex[2]); 
      } 
		
		mb->recalculateBoundingBox();
		mb->Material.DiffuseColor.set(255,s32(mat.diffuse.r*255.0f),s32(mat.diffuse.g*255.0f),s32(mat.diffuse.b*255.0f));
		mb->Material.AmbientColor.set(255,s32(mat.ambient.r*255.0f),s32(mat.ambient.g*255.0f),s32(mat.ambient.b*255.0f));
		
		mesh->addMeshBuffer(mb);
		mesh->recalculateBoundingBox();
	
		scene::ISceneNode *node = smgr->addMeshSceneNode(mesh);
//		node->setDebugDataVisible(true);
		
  	    wchar_t objname[100]; 
	    swprintf(objname,100,L"%S",obj.name);
   
		node->setName(objname);
		node->setRotation(node->getRotation()+core::vector3df(90.0f,0.0f,0.0f));
		//		node->setScale(core::vector3df(10.0f,10.0f,10.0f));
		node->setMaterialTexture(0,driver->getTexture(mat.diffuseMaterialMap.image_path));
		node->setVisible(true);
		node->setMaterialFlag(video::EMF_LIGHTING, false);
	}
}

[Guest]

Cool it looks like You're making progress.

There's one thing I'd like to suggest. If You would implement the IMeshLoader inferface we would afterwards be able to include this loader easyer in our projects (or even in irrlichtnx)

To get some help and see how this would look like You could take a look at the following files:
- IMeshLoader.h (the inferface)
- C3DSMeshFileLoader.h C3DSMeshFileLoader.cpp (an example implementation of IMeshLoader)

We could then add Your meshloader to the scenemanager and use it like every other meshloader "smgr->getMesh("city.ase");"

Think about it

Keep up the good work

[Guest]

Well I've been rewriting the ASE loader completely so it doesn't need any
external libs anymore. I cannot make it a meshloader subclass since it uses multiple scenenodes.

It works quite nice now. It loads meshes, materials, lights and cameras.
When exporting from 3dsmax to .ASE make sure you enable all checkboxes
for the exported items.

I've only got a problem with shadows. I've subclasses CMeshSceneNode
to have it contain a CShadowSceneNode. Unfortunately it crashes in the shadow creation code.

If anyone could help debugging this problem it would be great.
To enable the shadow loader uncomment line 282 of ASELoader.cpp

Here's the project: http://213.189.20.120/~nieka/ASELoader.zip

[afecelis]

this loader rocks! it would be cool if you could track the shadow bug down.

Zola seems to be an excellent programmer. He might be able to help out.

congrats Nieka. gr8 work!

ps. I'm glad so many gr8 things are happening in the community! excellent programs for the engine!