Example #1
0
bool CSTLMeshWriter::writeMeshBinary(io::IWriteFile* file, scene::IMesh* mesh, s32 flags)
{
	// write STL MESH header

	file->write("binary ",7);
	const core::stringc name(SceneManager->getMeshCache()->getMeshName(mesh));
	const s32 sizeleft = 73-name.size(); // 80 byte header
	if (sizeleft<0)
		file->write(name.c_str(),73);
	else
	{
		char* buf = new char[80];
		memset(buf, 0, 80);
		file->write(name.c_str(),name.size());
		file->write(buf,sizeleft);
		delete [] buf;
	}
	u32 facenum = 0;
	for (u32 j=0; j<mesh->getMeshBufferCount(); ++j)
		facenum += mesh->getMeshBuffer(j)->getIndexCount()/3;
	file->write(&facenum,4);

	// write mesh buffers

	for (u32 i=0; i<mesh->getMeshBufferCount(); ++i)
	{
		IMeshBuffer* buffer = mesh->getMeshBuffer(i);
		if (buffer)
		{
			const u32 indexCount = buffer->getIndexCount();
			const u16 attributes = 0;
			for (u32 j=0; j<indexCount; j+=3)
			{
				const core::vector3df& v1 = buffer->getPosition(buffer->getIndices()[j]);
				const core::vector3df& v2 = buffer->getPosition(buffer->getIndices()[j+1]);
				const core::vector3df& v3 = buffer->getPosition(buffer->getIndices()[j+2]);
				const core::plane3df tmpplane(v1,v2,v3);
				file->write(&tmpplane.Normal, 12);
				file->write(&v1, 12);
				file->write(&v2, 12);
				file->write(&v3, 12);
				file->write(&attributes, 2);
			}
		}
	}
	return true;
}
Example #2
0
void CTriangleSelector::updateFromMesh(const IMesh* mesh) const
{
	if (!mesh)
		return;

	bool skinnnedMesh = mesh->getMeshType() == EAMT_SKINNED;
	u32 meshBuffers = mesh->getMeshBufferCount();
	u32 triangleCount = 0;

	BoundingBox.reset(0.f, 0.f, 0.f);
	for (u32 i = 0; i < meshBuffers; ++i)
	{
		IMeshBuffer* buf = mesh->getMeshBuffer(i);
		u32 idxCnt = buf->getIndexCount();
		const u16* indices = buf->getIndices();

		if ( skinnnedMesh )
		{
			const core::matrix4& bufferTransform = ((scene::SSkinMeshBuffer*)buf)->Transformation;
			for (u32 index = 0; index < idxCnt; index += 3)
			{
				core::triangle3df& tri = Triangles[triangleCount++];
				bufferTransform.transformVect(tri.pointA, buf->getPosition(indices[index + 0]));
				bufferTransform.transformVect(tri.pointB, buf->getPosition(indices[index + 1]));
				bufferTransform.transformVect(tri.pointC, buf->getPosition(indices[index + 2]));
				BoundingBox.addInternalPoint(tri.pointA);
				BoundingBox.addInternalPoint(tri.pointB);
				BoundingBox.addInternalPoint(tri.pointC);
			}
		}
		else
		{
			for (u32 index = 0; index < idxCnt; index += 3)
			{
				core::triangle3df& tri = Triangles[triangleCount++];
				tri.pointA = buf->getPosition(indices[index + 0]);
				tri.pointB = buf->getPosition(indices[index + 1]);
				tri.pointC = buf->getPosition(indices[index + 2]);
				BoundingBox.addInternalPoint(tri.pointA);
				BoundingBox.addInternalPoint(tri.pointB);
				BoundingBox.addInternalPoint(tri.pointC);
			}
		}
	}
}
Example #3
0
//! writes a mesh
bool COBJMeshWriter::writeMesh(io::IWriteFile* file, scene::IMesh* mesh, s32 flags)
{
	if (!file)
		return false;

	os::Printer::log("Writing mesh", file->getFileName());

	// write OBJ MESH header

	const core::stringc name(FileSystem->getFileBasename(SceneManager->getMeshCache()->getMeshName(mesh), false)+".mtl");
	file->write("# exported by Irrlicht\n",23);
	file->write("mtllib ",7);
	file->write(name.c_str(),name.size());
	file->write("\n\n",2);

	// write mesh buffers

	core::array<video::SMaterial*> mat;

	u32 allVertexCount=1; // count vertices over the whole file
	for (u32 i=0; i<mesh->getMeshBufferCount(); ++i)
	{
		core::stringc num(i+1);
		IMeshBuffer* buffer = mesh->getMeshBuffer(i);
		if (buffer && buffer->getVertexCount())
		{
			file->write("g grp", 5);
			file->write(num.c_str(), num.size());
			file->write("\n",1);

			u32 j;
			const u32 vertexCount = buffer->getVertexCount();
			for (j=0; j<vertexCount; ++j)
			{
				file->write("v ",2);
				getVectorAsStringLine(buffer->getPosition(j), num);
				file->write(num.c_str(), num.size());
			}

			for (j=0; j<vertexCount; ++j)
			{
				file->write("vt ",3);
				getVectorAsStringLine(buffer->getTCoords(j), num);
				file->write(num.c_str(), num.size());
			}

			for (j=0; j<vertexCount; ++j)
			{
				file->write("vn ",3);
				getVectorAsStringLine(buffer->getNormal(j), num);
				file->write(num.c_str(), num.size());
			}

			file->write("usemtl mat",10);
			num = "";
			for (j=0; j<mat.size(); ++j)
			{
				if (*mat[j]==buffer->getMaterial())
				{
					num = core::stringc(j);
					break;
				}
			}
			if (num == "")
			{
				num = core::stringc(mat.size());
				mat.push_back(&buffer->getMaterial());
			}
			file->write(num.c_str(), num.size());
			file->write("\n",1);

			const u32 indexCount = buffer->getIndexCount();
			for (j=0; j<indexCount; j+=3)
			{
				file->write("f ",2);
				num = core::stringc(buffer->getIndices()[j+2]+allVertexCount);
				file->write(num.c_str(), num.size());
				file->write("/",1);
				file->write(num.c_str(), num.size());
				file->write("/",1);
				file->write(num.c_str(), num.size());
				file->write(" ",1);

				num = core::stringc(buffer->getIndices()[j+1]+allVertexCount);
				file->write(num.c_str(), num.size());
				file->write("/",1);
				file->write(num.c_str(), num.size());
				file->write("/",1);
				file->write(num.c_str(), num.size());
				file->write(" ",1);

				num = core::stringc(buffer->getIndices()[j+0]+allVertexCount);
				file->write(num.c_str(), num.size());
				file->write("/",1);
				file->write(num.c_str(), num.size());
				file->write("/",1);
				file->write(num.c_str(), num.size());
				file->write(" ",1);

				file->write("\n",1);
			}
			file->write("\n",1);
			allVertexCount += vertexCount;
		}
	}

	if (mat.size() == 0)
		return true;

	file = FileSystem->createAndWriteFile( name );
	if (file)
	{
		os::Printer::log("Writing material", file->getFileName());

		file->write("# exported by Irrlicht\n\n",24);
		for (u32 i=0; i<mat.size(); ++i)
		{
			core::stringc num(i);
			file->write("newmtl mat",10);
			file->write(num.c_str(),num.size());
			file->write("\n",1);

			getColorAsStringLine(mat[i]->AmbientColor, "Ka", num);
			file->write(num.c_str(),num.size());
			getColorAsStringLine(mat[i]->DiffuseColor, "Kd", num);
			file->write(num.c_str(),num.size());
			getColorAsStringLine(mat[i]->SpecularColor, "Ks", num);
			file->write(num.c_str(),num.size());
			getColorAsStringLine(mat[i]->EmissiveColor, "Ke", num);
			file->write(num.c_str(),num.size());
			num = core::stringc(mat[i]->Shininess/0.128f);
			file->write("Ns ", 3);
			file->write(num.c_str(),num.size());
			file->write("\n", 1);
			if (mat[i]->getTexture(0))
			{
				file->write("map_Kd ", 7);
				file->write(mat[i]->getTexture(0)->getName().getPath().c_str(), mat[i]->getTexture(0)->getName().getPath().size());
				file->write("\n",1);
			}
			file->write("\n",1);
		}
		file->drop();
	}
	return true;
}