From a1502da3fd46ac06d98a3eb7fc1849425ded6f17 Mon Sep 17 00:00:00 2001
From: granzuglia <guido.ranzuglia@isti.cnr.it>
Date: Tue, 25 Sep 2007 10:29:29 +0000
Subject: [PATCH] added real supports for multiple textures

---
 wrap/io_trimesh/import_dae.h | 18 +++++----
 wrap/io_trimesh/util_dae.h   | 77 +++++++++++++++++++++++++++++++++++-
 2 files changed, 86 insertions(+), 9 deletions(-)

diff --git a/wrap/io_trimesh/import_dae.h b/wrap/io_trimesh/import_dae.h
index 76c28182..409a4d84 100644
--- a/wrap/io_trimesh/import_dae.h
+++ b/wrap/io_trimesh/import_dae.h
@@ -26,7 +26,7 @@ namespace io {
 			return indnm;
 		}
 
-		static int WedgeTextureAttribute(OpenMeshType& m,const QStringList face,QString texture,const QStringList wt,const QDomNode wtsrc,const int meshfaceind,const int faceind,const int component)
+		static int WedgeTextureAttribute(OpenMeshType& m,const QStringList face,int ind_txt,const QStringList wt,const QDomNode wtsrc,const int meshfaceind,const int faceind,const int component)
 		{
 			int indtx = -1;
 			if (!wtsrc.isNull())
@@ -37,7 +37,8 @@ namespace io {
 				m.face[meshfaceind].WT(component).U() = wt.at(indtx * 2).toFloat();
 				m.face[meshfaceind].WT(component).V() = wt.at(indtx * 2 + 1).toFloat();
 				
-				m.face[meshfaceind].WT(component).N() = 1;
+				m.face[meshfaceind].WT(component).N() = ind_txt;
+				
 			}
 			return indtx;
 		}
@@ -124,11 +125,11 @@ namespace io {
 			{
 				QString mat =  tripatch.at(tript).toElement().attribute(QString("material"));
 				
-				QDomNodeList libim = info->dae->doc->elementsByTagName(QString("library_images"));
-				if (libim.size() == 1)
-				{
-					QDomNode img = findNodeBySpecificAttributeValue(libim.at(0).childNodes(),QString("id"),mat);
-				}
+				QDomNode txt_node = textureFinder(mat,*(info->dae->doc));
+				int ind_txt = -1;
+				if (!txt_node.isNull())
+					ind_txt = indexTextureByImgNode(*(info->dae->doc),txt_node);
+				
 				int nfcatt = tripatch.at(tript).toElement().elementsByTagName("input").size();
 
 				QStringList face;
@@ -152,7 +153,8 @@ namespace io {
 
 
 						int indnm = WedgeNormalAttribute(m,face,wa.wn,wa.wnsrc,ff,jj + wa.offnm,tt);
-						int indtx = WedgeTextureAttribute(m,face,mat,wa.wt,wa.wtsrc,ff,jj + wa.offtx,tt);
+						if (ind_txt != -1)
+							int indtx = WedgeTextureAttribute(m,face,ind_txt,wa.wt,wa.wtsrc,ff,jj + wa.offtx,tt);
 						int indcl = WedgeColorAttribute(m,face,wa.wc,wa.wcsrc,ff,jj + wa.offcl,tt);
 
 						jj += nfcatt;
diff --git a/wrap/io_trimesh/util_dae.h b/wrap/io_trimesh/util_dae.h
index 815f4037..5e32f976 100644
--- a/wrap/io_trimesh/util_dae.h
+++ b/wrap/io_trimesh/util_dae.h
@@ -263,7 +263,8 @@ namespace io {
 			int ind = 0;
 			while(ind < ndl_size)
 			{
-				if (ndl.at(ind).toElement().attribute(attrname) == attrvalue)
+				QString st = ndl.at(ind).toElement().attribute(attrname);
+				if (st == attrvalue)
 					return ndl.at(ind);
 				++ind;
 			}
@@ -448,6 +449,80 @@ namespace io {
 			return offset;
 		}
 
+		inline static QDomNode textureFinder(const QString& textname,const QDomDocument doc)
+		{
+			//visual_scene -> instance_material
+			QDomNodeList vis_scn = doc.elementsByTagName("library_visual_scenes");
+			if (vis_scn.size() != 1) 
+				return QDomNode();
+			QDomNode symb = findNodeBySpecificAttributeValue(vis_scn.at(0),QString("instance_material"),QString("symbol"),textname);
+			if (symb.isNull()) 
+				return QDomNode();
+			QString tar = symb.toElement().attribute("target");
+			if (tar.isNull())
+				return QDomNode();
+			tar = tar.remove('#');
+
+			//library_material -> material -> instance_effect
+			QDomNodeList lib_mat = doc.elementsByTagName("library_materials");
+			if (lib_mat.size() != 1) 
+				return QDomNode();
+			QDomNode material = findNodeBySpecificAttributeValue(lib_mat.at(0),QString("material"),QString("id"),tar);
+			if (material.isNull()) 
+				return QDomNode();
+			QDomNodeList in_eff = material.toElement().elementsByTagName("instance_effect");
+			if (vis_scn.size() == 0) 
+				return QDomNode();
+			QString url = in_eff.at(0).toElement().attribute("url");
+			if ((url.isNull()) || (url == ""))
+				return QDomNode();
+			url = url.remove('#');
+
+			//library_effects -> effect -> instance_effect
+			QDomNodeList lib_eff = doc.elementsByTagName("library_effects");
+			if (lib_eff.size() != 1) 
+				return QDomNode();
+			QDomNode effect = findNodeBySpecificAttributeValue(lib_eff.at(0),QString("effect"),QString("id"),url);
+			if (effect.isNull()) 
+				return QDomNode();
+			QDomNodeList init_from = effect.toElement().elementsByTagName("init_from");
+			if (init_from.size() == 0)
+				return QDomNode();
+			QString img_id = init_from.at(0).toElement().text();
+			if ((img_id.isNull()) || (img_id == ""))
+				return QDomNode();
+			
+			//library_images -> image
+			QDomNodeList lib_img = doc.elementsByTagName("library_images");
+			if (lib_img.size() != 1) 
+				return QDomNode();
+			QDomNode img = findNodeBySpecificAttributeValue(lib_img.at(0),QString("image"),QString("id"),img_id);
+			if (img.isNull()) 
+				return QDomNode();
+			return img;			
+		}
+
+		static int indexTextureByImgNode(const QDomDocument doc,const QDomNode node)
+		{	
+			QDomNodeList libim = doc.elementsByTagName(QString("library_images"));
+			if (libim.size() != 1)
+				return -1;
+			QDomNodeList imgs = libim.at(0).toElement().elementsByTagName("image");
+			
+			int ii = 0;
+			bool found = false;
+			while((ii < imgs.size()) && (!found))
+			{
+				if (imgs.at(ii) == node) 
+					found = true;
+				else ++ii;
+			}
+			if (found) 
+				return ii;
+			else
+				return -1;
+		}
+
 		struct WedgeAttribute
 		{
 			QDomNode wnsrc;