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Started the restructuring of the Collada parser. Now it is correctly recursive and it is able to get geometry also from controller.

This commit is contained in:
Paolo Cignoni 2008-07-15 07:27:08 +00:00
parent 437d258a22
commit c1c51913d3
2 changed files with 215 additions and 102 deletions
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34
wrap/dae/util_dae.h
View File

@ -26,6 +26,8 @@
#include <wrap/io_trimesh/additionalinfo.h>
#include <vcg/complex/trimesh/update/normal.h>
#include <vcg/complex/trimesh/update/position.h>
#include <vcg/complex/trimesh/append.h>
#include <vcg/complex/trimesh/allocate.h>
#include <wrap/io_trimesh/io_mask.h>
@ -252,6 +254,12 @@ namespace io {
else return dae_error_msg[error];
};
protected:
// This function take care of removing the standard '#' from the beginning of the url
// For example
// <instance_geometry url="#shape0-lib">
// means that you have to search in the <library_geometries> for a node <geometry> with id = "shape0-lib"
// you have to call this function to get ther right refernece name
inline static void referenceToANodeAttribute(const QDomNode n,const QString& attr,QString& url_st)
{
url_st = n.toElement().attribute(attr);
@ -299,7 +307,7 @@ namespace io {
return isThereTag(n.elementsByTagName(tagname));
}
// Very important function that given a <vertices> element find one of the its attribute (like position, color etc)
inline static QDomNode attributeSourcePerSimplex(const QDomNode n,const QDomDocument startpoint,const QString& sem)
{
QDomNodeList vertattr = n.toElement().elementsByTagName("input");
@ -383,8 +391,9 @@ namespace io {
m = m * rotTmp;
}
static void AddTranslation(vcg::Matrix44f& m,const QDomNode t)
static void ParseTranslation(vcg::Matrix44f& m,const QDomNode t)
{
assert(t.toElement().tagName() == "translate");
QDomNode tr = t.firstChild();
QString coord = tr.nodeValue();
QStringList coordlist = coord.split(" ");
@ -399,6 +408,25 @@ namespace io {
m[1][3] = coordlist.at(1).toFloat();
m[2][3] = coordlist.at(2).toFloat();
}
static void ParseMatrixNode(vcg::Matrix44f& m,const QDomNode t)
{
assert(t.toElement().tagName() == "matrix");
QDomNode tr = t.firstChild();
QString coord = tr.nodeValue().simplified();
qDebug("Parsing matrix node; text value is '%s'",qPrintable(coord));
QStringList coordlist = coord.split(" ");
if (coordlist.last() == "")
coordlist.removeLast();
assert(coordlist.size() == 16);
for(int i=0;i<4;++i)
{
m[i][0] = coordlist.at(i*4+0).toFloat();
m[i][1] = coordlist.at(i*4+1).toFloat();
m[i][2] = coordlist.at(i*4+2).toFloat();
m[i][3] = coordlist.at(i*4+3).toFloat();
}
}
static void TransfMatrix(const QDomNode parentnode,const QDomNode presentnode,vcg::Matrix44f& m)
{
@ -419,7 +447,7 @@ namespace io {
}
vcg::Matrix44f tmp;
tmp.SetIdentity();
if (!trans.isNull()) AddTranslation(tmp,trans);
if (!trans.isNull()) ParseTranslation(tmp,trans);
ParseRotationMatrix(tmp,rotlist);
m = m * tmp;
TransfMatrix(parentnode,par,m);

283
wrap/io_trimesh/import_dae.h
View File

@ -28,6 +28,10 @@
#include<wrap/dae/util_dae.h>
// uncomment one of the following line to enable the Verbose Trace for Crease
//#define QDEBUG if(1) ; else printf
#define QDEBUG qDebug
namespace vcg {
namespace tri {
namespace io {
@ -225,9 +229,26 @@ namespace io {
return E_NOERROR;
}
static int LoadMesh(OpenMeshType& m,AdditionalInfoDAE* info,const QDomNode& geo,const vcg::Matrix44f& t, CallBackPos *cb=0)
static int LoadControllerMesh(OpenMeshType& m, AdditionalInfoDAE* info, const QDomElement& geo, CallBackPos *cb=0)
{
assert(geo.tagName() == "controller");
QDomNodeList skinList = geo.toElement().elementsByTagName("skin");
if(skinList.size()!=1) return E_CANTOPEN;
QDomElement skinNode = skinList.at(0).toElement();
QString geomNode_url;
referenceToANodeAttribute(skinNode,"source",geomNode_url);
QDEBUG("Found a controller referencing a skin with url '%s'", qPrintable(geomNode_url));
QDomNode refNode = findNodeBySpecificAttributeValue(*(info->dae->doc),"geometry","id",geomNode_url);
LoadMesh(m, info, refNode.toElement());
}
/*
Basic function that fills a mesh with the coord, norm and tristarting from node that is of kind <geometry>
*/
static int LoadMesh(OpenMeshType& m, AdditionalInfoDAE* info, const QDomElement& geo, CallBackPos *cb=0)
{
assert(geo.tagName() == "geometry");
if (isThereTag(geo,"mesh"))
{
if ((cb !=NULL) && (((info->numvert + info->numface)%100)==0) && !(*cb)((100*(info->numvert + info->numface))/(info->numvert + info->numface), "Vertex Loading"))
@ -236,15 +257,13 @@ namespace io {
int geosrc_size = geosrc.size();
if (geosrc_size < 1)
return E_NOVERTEXPOSITION;*/
QDEBUG("**** Loading a Geometry Mesh ****");
QDomNodeList vertices = geo.toElement().elementsByTagName("vertices");
int vertices_size = vertices.size();
if (vertices_size != 1)
return E_INCOMPATIBLECOLLADA141FORMAT;
if (vertices.size() != 1) return E_INCOMPATIBLECOLLADA141FORMAT;
QDomElement vertNode = vertices.at(0).toElement();
QDomNode srcnode = attributeSourcePerSimplex(vertices.at(0),*(info->dae->doc),"POSITION");
if (srcnode.isNull())
return E_NOVERTEXPOSITION;
QDomNode srcnode = attributeSourcePerSimplex(vertNode,*(info->dae->doc),"POSITION");
if (srcnode.isNull()) return E_NOVERTEXPOSITION;
QStringList geosrcposarr;
valueStringList(geosrcposarr,srcnode,"float_array");
@ -275,24 +294,17 @@ namespace io {
int ii = 0;
for(size_t vv = offset;vv < m.vert.size();++vv)
{
assert((ii * 3 < geosrcposarr_size) && (ii * 3 + 1 < geosrcposarr_size) && (ii * 3 + 2 < geosrcposarr_size));
vcg::Point4f tmp = t * vcg::Point4f(geosrcposarr[ii * 3].toFloat(),geosrcposarr[ii * 3 + 1].toFloat(),geosrcposarr[ii * 3 + 2].toFloat(),1.0f);
m.vert[vv].P() = vcg::Point3f(tmp.X(),tmp.Y(),tmp.Z());
{
Point3f positionCoord(geosrcposarr[ii * 3].toFloat(),geosrcposarr[ii * 3 + 1].toFloat(),geosrcposarr[ii * 3 + 2].toFloat());
m.vert[vv].P() = positionCoord;
if (!srcnodenorm.isNull())
{
assert((ii * 3 < geosrcvertnorm.size()) && (ii * 3 + 1 < geosrcvertnorm.size()) && (ii * 3 + 2 < geosrcvertnorm.size()));
vcg::Matrix44f intr44 = vcg::Inverse(t);
vcg::Transpose(intr44);
Matrix33f intr33;
for(unsigned int rr = 0; rr < 2; ++rr)
{
for(unsigned int cc = 0;cc < 2;++cc)
intr33[rr][cc] = intr44[rr][cc];
}
m.vert[vv].N() = (intr33 * vcg::Point3f(geosrcvertnorm[ii * 3].toFloat(),geosrcvertnorm[ii * 3 + 1].toFloat(),geosrcvertnorm[ii * 3 + 2].toFloat())).Normalize();
Point3f normalCoord(geosrcvertnorm[ii * 3].toFloat(),
geosrcvertnorm[ii * 3 + 1].toFloat(),
geosrcvertnorm[ii * 3 + 2].toFloat());
normalCoord.Normalize();
m.vert[vv].N() = normalCoord;
}
/*if (!srcnodecolor.isNull())
@ -351,6 +363,117 @@ namespace io {
}
}
// This recursive function add to a mesh the subtree starting from the passed node.
// When you start from a visual_scene, you can find nodes.
// nodes can be directly instanced or referred from the node library.
static void AddNodeToMesh(QDomElement node,
OpenMeshType& m, Matrix44f curTr,
AdditionalInfoDAE*& info)
{
QDEBUG("Starting processing <node> with id %s",qPrintable(node.attribute("id")));
curTr = curTr * getTransfMatrixFromNode(node);
QDomNodeList geomNodeList = node.elementsByTagName("instance_geometry");
for(int ch = 0;ch < geomNodeList.size();++ch)
{
QDomElement instGeomNode= geomNodeList.at(ch).toElement();
if(instGeomNode.parentNode()==node) // process only direct child
{
QDEBUG("Found a instance_geometry with url %s",qPrintable(instGeomNode.attribute("url")));
QString geomNode_url;
referenceToANodeAttribute(instGeomNode,"url",geomNode_url);
QDEBUG("Found a instance_geometry with url '%s'", qPrintable(geomNode_url));
QDomNode refNode = findNodeBySpecificAttributeValue(*(info->dae->doc),"geometry","id",geomNode_url);
OpenMeshType newMesh;
LoadMesh(newMesh, info, refNode.toElement());
tri::UpdatePosition<OpenMeshType>::Matrix(newMesh,curTr);
tri::Append<OpenMeshType,OpenMeshType>::Mesh(m,newMesh);
}
}
QDomNodeList controllerNodeList = node.elementsByTagName("instance_controller");
for(int ch = 0;ch < controllerNodeList.size();++ch)
{
QDomElement instContrNode= controllerNodeList.at(ch).toElement();
if(instContrNode.parentNode()==node) // process only direct child
{
QDEBUG("Found a instance_controller with url %s",qPrintable(instContrNode.attribute("url")));
QString controllerNode_url;
referenceToANodeAttribute(instContrNode,"url",controllerNode_url);
QDEBUG("Found a instance_controller with url '%s'", qPrintable(controllerNode_url));
QDomNode refNode = findNodeBySpecificAttributeValue(*(info->dae->doc),"controller","id",controllerNode_url);
OpenMeshType newMesh;
LoadControllerMesh(newMesh, info, refNode.toElement());
tri::UpdatePosition<OpenMeshType>::Matrix(newMesh,curTr);
tri::Append<OpenMeshType,OpenMeshType>::Mesh(m,newMesh);
}
}
QDomNodeList nodeNodeList = node.elementsByTagName("node");
for(int ch = 0;ch < nodeNodeList.size();++ch)
{
if(nodeNodeList.at(ch).parentNode()==node) // process only direct child
AddNodeToMesh(nodeNodeList.at(ch).toElement(), m,curTr, info);
}
QDomNodeList instanceNodeList = node.elementsByTagName("instance_node");
for(int ch = 0;ch < instanceNodeList.size();++ch)
{
if(instanceNodeList.at(ch).parentNode()==node) // process only direct child
{
QDomElement instanceNode = instanceNodeList.at(ch).toElement();
QString node_url;
referenceToANodeAttribute(instanceNode,"url",node_url);
QDEBUG("Found a instance_node with url '%s'", qPrintable(node_url));
QDomNode refNode = findNodeBySpecificAttributeValue(*(info->dae->doc),"node","id",node_url);
if(refNode.isNull())
QDEBUG("findNodeBySpecificAttributeValue returned a null node for %s",qPrintable(node_url));
AddNodeToMesh(refNode.toElement(), m,curTr, info);
}
}
}
// Retrieve the transformation matrix that is defined in the childs of a node.
// used during the recursive descent.
static Matrix44f getTransfMatrixFromNode(const QDomElement parentNode)
{
QDEBUG("getTrans form node with tag %s",qPrintable(parentNode.tagName()));
assert(parentNode.tagName() == "node");
std::vector<QDomNode> rotationList;
QDomNode matrixNode;
QDomNode translationNode;
for(int ch = 0;ch < parentNode.childNodes().size();++ch)
{
if (parentNode.childNodes().at(ch).nodeName() == "rotate")
rotationList.push_back(parentNode.childNodes().at(ch));
if (parentNode.childNodes().at(ch).nodeName() == "translate")
translationNode = parentNode.childNodes().at(ch);
if (parentNode.childNodes().at(ch).nodeName() == "matrix")
matrixNode = parentNode.childNodes().at(ch);
}
Matrix44f rotM; rotM.SetIdentity();
Matrix44f transM; transM.SetIdentity();
if (!translationNode.isNull()) ParseTranslation(transM,translationNode);
if (!rotationList.empty()) ParseRotationMatrix(rotM,rotationList);
if (!matrixNode.isNull())
{
ParseMatrixNode(transM,matrixNode);
return transM;
}
return transM*rotM;
}
public:
//merge all meshes in the collada's file in the templeted mesh m
@ -358,6 +481,7 @@ namespace io {
static int Open(OpenMeshType& m,const char* filename,AdditionalInfo*& info, CallBackPos *cb=0)
{
QDEBUG("----- Starting the processing of %s ------",filename);
AdditionalInfoDAE* inf = new AdditionalInfoDAE();
inf->dae = new InfoDAE();
@ -374,104 +498,67 @@ namespace io {
inf->dae->doc = doc;
//GetTexture(*(info->doc),inf);
//scene->instance_visual_scene
QDomNodeList scenes = inf->dae->doc->elementsByTagName("scene");
int scn_size = scenes.size();
if (scn_size == 0)
return E_NO3DSCENE;
QDEBUG("File Contains %i Scenes",scenes.size());
int problem = E_NOERROR;
bool found_a_mesh = false;
//Is there geometry in the file?
bool geoinst_found = false;
//for each scene in COLLADA FILE
// The main loading loop
// for each scene in COLLADA FILE
/*
Some notes on collada structure.
the top root is the <scene> that can contains one of more <visual_scene>.
<visual_scene> can be directly written there (check!) or instanced from their definition in the <library_visual_scene>
each <visual_scene> contains a hierarchy of <node>
each <node> contains
transformation
other node
instance of geometry
instance of controller
*/
for(int scn = 0;scn < scn_size;++scn)
{
QDomNodeList instscenes = scenes.at(scn).toElement().elementsByTagName("instance_visual_scene");
int instscn_size = instscenes.size();
if (instscn_size == 0)
return E_INCOMPATIBLECOLLADA141FORMAT;
QDEBUG("Scene %i contains %i instance_visual_scene ",scn,instscn_size);
if (instscn_size == 0) return E_INCOMPATIBLECOLLADA141FORMAT;
//for each scene instance in a COLLADA scene
for(int instscn = 0;instscn < instscn_size; ++instscn)
{
QString libscn_url;
referenceToANodeAttribute(instscenes.at(instscn),"url",libscn_url);
QDEBUG("instance_visual_scene %i refers %s ",instscn,qPrintable(libscn_url));
QDomNode nd = QDomNode(*(inf->dae->doc));
QDomNode visscn = findNodeBySpecificAttributeValue(*(inf->dae->doc),"visual_scene","id",libscn_url);
if(visscn.isNull())
return E_UNREFERENCEBLEDCOLLADAATTRIBUTE;
if(visscn.isNull()) return E_UNREFERENCEBLEDCOLLADAATTRIBUTE;
//assert (visscn.toElement().Attribute("id") == libscn_url);
//for each node in the libscn_url visual scene
QDomNodeList visscn_child = visscn.childNodes();
QDEBUG("instance_visual_scene %s has %i children",qPrintable(libscn_url),visscn_child.size());
//for each direct child of a libscn_url visual scene find if there is some geometry instance
// for each direct child of a visual scene process it
for(int chdind = 0; chdind < visscn_child.size();++chdind)
{
QDomNodeList geoinst = visscn_child.at(chdind).toElement().elementsByTagName("instance_geometry");
int geoinst_size = geoinst.size();
if (geoinst_size != 0)
{
geoinst_found |= true;
QDomNodeList geolib = inf->dae->doc->elementsByTagName("library_geometries");
assert(geolib.size() == 1);
//!!!!!!!!!!!!!!!!!here will be the code for geometry transformations!!!!!!!!!!!!!!!!!!!!!!
for(int geoinst_ind = 0;geoinst_ind < geoinst_size;++geoinst_ind)
{
QString geo_url;
referenceToANodeAttribute(geoinst.at(geoinst_ind),"url",geo_url);
QDomNode geo = findNodeBySpecificAttributeValue(geolib.at(0),"geometry","id",geo_url);
if (geo.isNull())
return E_UNREFERENCEBLEDCOLLADAATTRIBUTE;
vcg::Matrix44f tr;
tr.SetIdentity();
TransfMatrix(visscn,geoinst.at(geoinst_ind),tr);
problem |= LoadMesh(m,inf,geo,tr);
if (problem & E_NOMESH)
found_a_mesh |= false;
else
found_a_mesh = true;
}
}
}
//if there is at least a mesh I clean the problem status variable from E_NOMESH ERROR
if (((problem & E_NOMESH) || (problem & E_NOPOLYGONALMESH)) && (found_a_mesh))
{
if (problem & E_NOMESH)
problem = problem & ~E_NOMESH;
if (problem & E_NOPOLYGONALMESH)
problem = problem & ~E_NOPOLYGONALMESH;
}
}
}
if (!geoinst_found)
{
QDomNodeList geolib = inf->dae->doc->elementsByTagName("library_geometries");
assert(geolib.size() == 1);
QDomNodeList geochild = geolib.at(0).childNodes();
int geochild_size = geochild.size();
int problem = 0;
for(int chd = 0;chd < geochild_size;++chd)
{
vcg::Matrix44f tmp;
tmp.SetIdentity();
problem |= LoadMesh(m,inf,geochild.at(chd),tmp);
}
}
//if there is at least a mesh I clean the problem status variable from E_NOMESH or E_NOPOLYGONALMESH ERROR
if (((problem & E_NOMESH) || (problem & E_NOPOLYGONALMESH)) && (found_a_mesh))
{
if (problem & E_NOMESH)
problem = problem & ~E_NOMESH;
if (problem & E_NOPOLYGONALMESH)
problem = problem & ~E_NOPOLYGONALMESH;
}
info = inf;
QDomElement node=visscn_child.at(chdind).toElement();
if(node.isNull()) continue;
QDEBUG("Processing Visual Scene child %i - of type '%s'",chdind,qPrintable(node.tagName()));
Matrix44f baseTr; baseTr.SetIdentity();
if(node.toElement().tagName()=="node")
AddNodeToMesh(node.toElement(), m, baseTr,inf);
} // end for each node of a given scene
} // end for each visual scene instance
} // end for each scene instance
return problem;
}
@ -513,8 +600,7 @@ namespace io {
{
QDomNodeList instscenes = scenes.at(scn).toElement().elementsByTagName("instance_visual_scene");
int instscn_size = instscenes.size();
if (instscn_size == 0)
return false;
if (instscn_size == 0) return false;
//for each scene instance in a COLLADA scene
for(int instscn = 0;instscn < instscn_size; ++instscn)
@ -523,8 +609,7 @@ namespace io {
referenceToANodeAttribute(instscenes.at(instscn),"url",libscn_url);
QDomNode nd = QDomNode(*(info->dae->doc));
QDomNode visscn = findNodeBySpecificAttributeValue(*(info->dae->doc),"visual_scene","id",libscn_url);
if(visscn.isNull())
return false;
if(visscn.isNull()) return false;
//for each node in the libscn_url visual scene
//QDomNodeList& visscn_child = visscn.childNodes();