vcglib/wrap/io_trimesh/util_dae.h

#ifndef __VCGLIB_UTILDAE
#define __VCGLIB_UTILDAE

#include <wrap/io_trimesh/additionalinfo.h>
#include <vcg/complex/trimesh/update/normal.h>
#include <vcg/complex/trimesh/allocate.h>

#include <wrap/io_trimesh/io_mask.h>

#include<QtXml/QDomDocument>
#include<QtCore/QFile>
#include <QtCore/QStringList>

#include<vcg/space/point3.h>
#include<vcg/space/tcoord2.h>
#include<vcg/space/color4.h>
#include <wrap/callback.h>

namespace vcg {
namespace tri {
namespace io {
	class InfoDAE
	{
		public:

		InfoDAE()
		{
			doc = NULL;
		}

		~InfoDAE()
		{
			delete doc;
		}

		QDomDocument* doc;		
	};

	class AdditionalInfoDAE : public AdditionalInfo
	{
	public: 
		vcg::tri::io::InfoDAE* dae;
		std::vector<QString> texturefile; 

		AdditionalInfoDAE()
		:AdditionalInfo()
		{
			mask	= 0;
			numvert = 0;
			numface = 0;
		}

		~AdditionalInfoDAE()
		{
			delete dae;
			texturefile.clear();
		}
	};

	class UtilDAE
	{
	public:
		enum DAEError 
		{
			E_NOERROR,				// 0
			E_CANTOPEN,				// 1
			E_NOGEOMETRYLIBRARY,     // 2 
			E_NOMESH,      // 3
			E_NOVERTEXPOSITION,            // 4
			E_NO3DVERTEXPOSITION,			// 5
			E_NO3DSCENE, // 6
			E_INCOMPATIBLECOLLADA141FORMAT, //7
			E_UNREFERENCEBLEDCOLLADAATTRIBUTE, // 8
			E_NOTRIANGLES
		};

		static const char *ErrorMsg(int error)
		{
			static const char * dae_error_msg[] =
			{
				"No errors",
				"Can't open file",
				"File without a geometry library",
				"There isn't mesh in file",
				"The meshes in file haven't the vertex position attribute",
				"The importer assumes that the OpenMeshType uses a 3D point for the vertex position",
				"There isn't any scene in Collada file",
				"The input file is not compatible with COLLADA 1.41 standard format",
				"Collada file is trying to referece an attribute that is not in the file",
				"This version of Collada Importer support only triangular mesh file"
			};

			if(error>9 || error<0) return "Unknown error";
			else return dae_error_msg[error];
		};
	protected:
		inline static void referenceToANodeAttribute(const QDomNode n,const QString& attr,QString& url_st)
		{
			url_st = n.toElement().attribute(attr);
			int sz = url_st.size() - 1;
			url_st = url_st.right(sz);
			assert(url_st.size() != 0);
		}

		inline static QDomNode findNodeBySpecificAttributeValue(const QDomNodeList& ndl,const QString& attrname,const QString& attrvalue)
		{
			int ndl_size = ndl.size();
			assert(ndl_size != 0);
			int ind = 0;
			while(ind < ndl_size)
			{
				if (ndl.at(ind).toElement().attribute(attrname) == attrvalue)
					return ndl.at(ind);
				++ind;
			}
			return QDomNode();
		}

		inline static QDomNode findNodeBySpecificAttributeValue(const QDomNode n,const QString& tag,const QString& attrname,const QString& attrvalue)
		{
			return findNodeBySpecificAttributeValue(n.toElement().elementsByTagName(tag),attrname,attrvalue);
		}

		inline static QDomNode findNodeBySpecificAttributeValue(const QDomDocument n,const QString& tag,const QString& attrname,const QString& attrvalue)
		{
			return findNodeBySpecificAttributeValue(n.elementsByTagName(tag),attrname,attrvalue);
		}
		
		inline static bool isThereTag(const QDomNodeList& list)
		{
			return ((list.size() > 0) ? true : false);
		}

		inline static bool isThereTag(const QDomNode n,const QString& tagname)
		{
			return isThereTag(n.toElement().elementsByTagName(tagname));
		}

		inline static bool isThereTag(const QDomDocument n,const QString& tagname)
		{
			return isThereTag(n.elementsByTagName(tagname));
		}


		inline static QDomNode attributeSourcePerSimplex(const QDomNode n,const QDomDocument startpoint,const QString& sem)
		{
			QDomNodeList vertattr = n.toElement().elementsByTagName("input");
			for(int ind = 0;ind < vertattr.size();++ind)
			{
				if (vertattr.at(ind).toElement().attribute("semantic") == sem)
				{
					QString url; 
					referenceToANodeAttribute(vertattr.at(ind),"source",url);
					return findNodeBySpecificAttributeValue(startpoint,"source","id",url);
				}
			}
			return QDomNode();
		}

		inline static void valueStringList(QStringList& res,const QDomNode srcnode,const QString& tag) 
		{
			QDomNodeList list = srcnode.toElement().elementsByTagName(tag);
			assert(list.size() == 1);
			QString nd = list.at(0).firstChild().nodeValue();
			res = nd.split(" ");
			if (res.last() == "")
				res.removeLast();
		
		}

		/*inline static bool removeChildNode(QDomNodeList*/
		
		inline static bool removeChildNodeList(QDomNodeList& nodelst,const QString& tag = "", const QString& attribname = "", const QString& attribvalue = "")
		{
			for(int jj = 0;jj < nodelst.size();++jj)
			{
				removeChildNode(nodelst.at(jj),tag,attribname,attribvalue); 
			}
			return true;
		}


		inline static bool removeChildNode(QDomNode node,const QString& tag = "", const QString& attribname = "", const QString& attribvalue = "")
		{
			QDomNodeList clst = node.childNodes();
			for(int ii = 0;ii < clst.size();++ii)
			{
				QDomNode oldchild = node.childNodes().at(ii); 
				if (tag != "")
				{
					if ((attribname != "") && (attribvalue != ""))
					{
						if (clst.at(ii).toElement().attribute(attribname) == attribvalue)
							node.removeChild(oldchild);
					}
					else 
					{	
						QString nm = clst.at(ii).nodeName();
						if (clst.at(ii).nodeName() == tag) 
						{
							node.removeChild(oldchild);
						}
					}
				}
				else node.removeChild(oldchild);
			}
			return true;
		}

		static void ParseRotationMatrix(vcg::Matrix44f& m,const std::vector<QDomNode>& t)
		{
			vcg::Matrix44f tmp;
			tmp.SetIdentity();
			for(unsigned int ii = 0;ii < t.size();++ii)
			{
				QString rt = t[ii].firstChild().nodeValue();
				QStringList rtl = rt.split(" ");
				if (rtl.last() == "") rtl.removeLast();
				assert(rtl.size() == 4);
				tmp.SetRotate(rtl.at(3).toFloat(),vcg::Point3f(rtl.at(0).toFloat(),rtl.at(1).toFloat(),rtl.at(2).toFloat()));
				tmp *= tmp;
			}
			m = m * tmp;
		}

		static void AddTranslation(vcg::Matrix44f& m,const QDomNode t)
		{
			QDomNode tr = t.firstChild();
			QString coord = tr.nodeValue();
			QStringList coordlist = coord.split(" ");
			if (coordlist.last() == "") 
				coordlist.removeLast();
			assert(coordlist.size() == 3);
			m[0][0] = 1.0f;
			m[1][1] = 1.0f;
			m[2][2] = 1.0f;
			m[3][3] = 1.0f;
			m[0][3] = coordlist.at(0).toFloat();
			m[1][3] = coordlist.at(1).toFloat();
			m[2][3] = coordlist.at(2).toFloat();
		}

		static void TransfMatrix(const QDomNode parentnode,const QDomNode presentnode,vcg::Matrix44f& m)
		{
			if (presentnode == parentnode) return;
			else
			{
				QDomNode par = presentnode.parentNode();
				std::vector<QDomNode> rotlist;
				QDomNode trans;
				for(int ch = 0;ch < par.childNodes().size();++ch)
				{
					if (par.childNodes().at(ch).nodeName() == "rotate")
						rotlist.push_back(par.childNodes().at(ch));
					else if (par.childNodes().at(ch).nodeName() == "translate")
						 {
							trans = par.childNodes().at(ch);
					     }		
				}
				vcg::Matrix44f tmp;
				tmp.SetIdentity();
				if (!trans.isNull()) AddTranslation(tmp,trans);
				ParseRotationMatrix(tmp,rotlist);
				m = m * tmp;
				TransfMatrix(parentnode,par,m);
			}
		}
	};
}
}
}

#endif