Hi,
I have a problem (maybe a bug?) in loading a .dae file made with Blender
collada exporter.
I'm writing a robot simulation software that uses collada to load both 3d and
physics.
The error I get is an exception :
"Unhandled exception at 0x0049fb10 (msvcr80d.dll) in RobotSimulator.exe:
0xC0000005: Access violation reading location 0x00000000."
This occours when I try to load the collada file. Here is the code I wrote:
Code:
bool VisualModel::CreateFromColladaFileAndFillDAE(std::string & filename,DAE
*dae)
{
osg::ref_ptr<osgDB::ReaderWriter::Options> rwoptions(new
osgDB::ReaderWriter::Options());
rwoptions->setPluginData("DAE",dae);
modelnode = osgDB::readNodeFile(filename,rwoptions);
if(!modelnode) return false;
return true;
}
Here is the stack trace:
Code:
> msvcr80d.dll!strlen(unsigned char * buf=0x0012e760) Line 81 Asm
msvcp80d.dll!std::char_traits<char>::length(const char *
_First=0x00000000) Line 559 + 0x9 bytes C++
msvcp80d.dll!std::basic_string<char,std::char_traits<char>,std::allocator<char>
>::assign(const char * _Ptr=0x00000000) Line 1042 + 0x9 bytes C++
msvcp80d.dll!std::basic_string<char,std::char_traits<char>,std::allocator<char>
>::operator=(const char * _Ptr=0x00000000) Line 893 C++
osg55-osgd.dll!osg::Object::setName(const char * name=0x00000000) Line
102 + 0x21 bytes C++
osgdb_daed.dll!osgdae::daeReader::processSinglePPrimitive<domTriangles>(osg::Geode
* geode=0x05c08620, domTriangles * group=0x05c1cbe8, std::map<daeElement
*,osgdae::domSourceReader,std::less<daeElement
*>,std::allocator<std::pair<daeElement * const,osgdae::domSourceReader> > > &
sources=[2](...,...), unsigned int mode=4) Line 243 + 0x14 bytes C++
osgdb_daed.dll!osgdae::daeReader::processGeometry(domGeometry *
geo=0x05c1a3e8) Line 219 C++
osgdb_daed.dll!osgdae::daeReader::processInstanceGeometry(domInstance_geometry
* ig=0x05c1ee98) Line 47 + 0xc bytes C++
osgdb_daed.dll!osgdae::daeReader::processNode(domNode *
node=0x05c1e310) Line 366 + 0x22 bytes C++
osgdb_daed.dll!osgdae::daeReader::processVisualScene(domVisual_scene *
scene=0x05c1dd58) Line 156 + 0x23 bytes C++
osgdb_daed.dll!osgdae::daeReader::convert(const
std::basic_string<char,std::char_traits<char>,std::allocator<char> > &
fileURI="./simpleworld.dae") Line 123 + 0xc bytes C++
osgdb_daed.dll!ReaderWriterDAE::readNode(const
std::basic_string<char,std::char_traits<char>,std::allocator<char> > &
fname=".\simpleworld.dae", const osgDB::ReaderWriter::Options *
options=0x05c07100) Line 65 + 0x12 bytes C++
osg55-osgDBd.dll!osgDB::Registry::ReadNodeFunctor::doRead(osgDB::ReaderWriter &
rw={...}) Line 1399 + 0x40 bytes C++
osg55-osgDBd.dll!osgDB::Registry::read(const
osgDB::Registry::ReadFunctor & readFunctor={...}) Line 1537 + 0x22 bytes C++
osg55-osgDBd.dll!osgDB::Registry::readImplementation(const
osgDB::Registry::ReadFunctor & readFunctor={...}, bool useObjectCache=false)
Line 1645 + 0x13 bytes C++
osg55-osgDBd.dll!osgDB::Registry::readNodeImplementation(const
std::basic_string<char,std::char_traits<char>,std::allocator<char> > &
fileName=".\simpleworld.dae", const osgDB::ReaderWriter::Options *
options=0x05c07100) Line 1850 + 0x57 bytes C++
osg55-osgDBd.dll!osgDB::Registry::readNode(const
std::basic_string<char,std::char_traits<char>,std::allocator<char> > &
fileName=".\simpleworld.dae", const osgDB::ReaderWriter::Options *
options=0x05c07100, bool buildKdTreeIfRequired=true) Line 237 + 0x98 bytes C++
osg55-osgDBd.dll!osgDB::readNodeFile(const
std::basic_string<char,std::char_traits<char>,std::allocator<char> > &
filename=".\simpleworld.dae", const osgDB::ReaderWriter::Options *
options=0x05c07100) Line 69 + 0x1f bytes C++
RobotSimulator.exe!RobotSimulator::VisualModel::CreateFromColladaFileAndFillDAE(std::basic_string<char,std::char_traits<char>,std::allocator<char>
> & filename=".\simpleworld.dae", DAE * dae=0x0012f958) Line 10 + 0x15 bytes
C++
RobotSimulator.exe!RobotSimulator::Simulable::LoadModel(RobotSimulator::Model
model={...}) Line 21 + 0x16 bytes C++
RobotSimulator.exe!RobotSimulator::Simulator::LoadSimulation(const char
* pfilename=0x05b4d9c1) Line 93 + 0x28 bytes C++
RobotSimulator.exe!main(int argc=2, char * * argv=0x05b4d968) Line 54
+ 0x20 bytes C++
RobotSimulator.exe!__tmainCRTStartup() Line 586 + 0x19 bytes C
RobotSimulator.exe!mainCRTStartup() Line 403 C
kernel32.dll!7c817077()
The collada model is made by Blender 2.48a using the default startup scene with
the cube with assigned a green material and esported with Triangles option and
DisablePhisics option (for testing). You can find it in attachments.
Note that with collada-dom viewer the model is loaded adn displayed correctly
and with osgviewer the model is loaded witout exceptions but nothing is
displayed into the scene.
I think the problem is related to the call (you can see in the stack trace)
osg55-osgd.dll!osg::Object::setName(const char * name=0x00000000)� Line 102 +
0x21 bytes
Can you tell me why this appens and how to correct ?
Thank you!!
Bye :D
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=13834#13834
<?xml version="1.0" encoding="utf-8"?>
<COLLADA version="1.4.0" xmlns="http://www.collada.org/2005/11/COLLADASchema";>
<asset>
<contributor>
<author>Illusoft Collada 1.4.0 plugin for Blender -
http://colladablender.illusoft.com</author>
<authoring_tool>Blender v:248 - Illusoft Collada
Exporter v:0.3.160</authoring_tool>
<comments></comments>
<copyright></copyright>
<source_data>file://C:/000TESI/ROBOTSIMULATOR/Models/simpleworld.blend</source_data>
</contributor>
<created>2009-06-10T16:00:03.375000</created>
<modified>2009-06-10T16:00:03.375000</modified>
<unit meter="0.01" name="centimeter"/>
<up_axis>Z_UP</up_axis>
</asset>
<library_cameras>
<camera id="Camera-Camera" name="Camera-Camera">
<optics>
<technique_common>
<perspective>
<yfov>49.13434</yfov>
<znear>0.1</znear>
<zfar>100.0</zfar>
</perspective>
</technique_common>
</optics>
</camera>
</library_cameras>
<library_lights>
<light id="Spot" name="Spot">
<technique_common>
<point>
<color>1.00000 1.00000 1.00000</color>
<constant_attenuation>1.0</constant_attenuation>
<linear_attenuation>0.0</linear_attenuation>
<quadratic_attenuation>0.0</quadratic_attenuation>
</point>
</technique_common>
</light>
</library_lights>
<library_geometries>
<geometry id="Cube_001" name="Cube_001">
<mesh>
<source id="Cube_001-Position">
<float_array count="24"
id="Cube_001-Position-array">1.00000 1.00000 -1.00000 1.00000 -1.00000 -1.00000
-1.00000 -1.00000 -1.00000 -1.00000 1.00000 -1.00000 1.00000 1.00000 1.00000
1.00000 -1.00000 1.00000 -1.00000 -1.00000 1.00000 -1.00000 1.00000
1.00000</float_array>
<technique_common>
<accessor count="8"
source="#Cube_001-Position-array" stride="3">
<param type="float"
name="X"></param>
<param type="float"
name="Y"></param>
<param type="float"
name="Z"></param>
</accessor>
</technique_common>
</source>
<source id="Cube_001-Normals">
<float_array count="18"
id="Cube_001-Normals-array">0.00000 0.00000 -1.00000 0.00000 -0.00000 1.00000
1.00000 -0.00000 0.00000 -0.00000 -1.00000 -0.00000 -1.00000 0.00000 -0.00000
0.00000 1.00000 0.00000</float_array>
<technique_common>
<accessor count="6"
source="#Cube_001-Normals-array" stride="3">
<param type="float"
name="X"></param>
<param type="float"
name="Y"></param>
<param type="float"
name="Z"></param>
</accessor>
</technique_common>
</source>
<vertices id="Cube_001-Vertex">
<input semantic="POSITION"
source="#Cube_001-Position"/>
</vertices>
<triangles count="12">
<input offset="0" semantic="VERTEX"
source="#Cube_001-Vertex"/>
<input offset="1" semantic="NORMAL"
source="#Cube_001-Normals"/>
<p>0 0 1 0 2 0 2 0 3 0 0 0 4 1 7 1 6 1
6 1 5 1 4 1 0 2 4 2 5 2 5 2 1 2 0 2 1 3 5 3 6 3 6 3 2 3 1 3 2 4 6 4 7 4 7 4 3 4
2 4 4 5 0 5 3 5 3 5 7 5 4 5</p>
</triangles>
</mesh>
</geometry>
</library_geometries>
<library_visual_scenes>
<visual_scene id="Scene" name="Scene">
<node layer="L1" id="Cube" name="Cube">
<translate sid="translate">0.00000 0.00000
0.00000</translate>
<rotate sid="rotateZ">0 0 1 0.00000</rotate>
<rotate sid="rotateY">0 1 0 -0.00000</rotate>
<rotate sid="rotateX">1 0 0 0.00000</rotate>
<scale sid="scale">1.00000 1.00000
1.00000</scale>
<instance_geometry url="#Cube_001"/>
</node>
<node layer="L1" id="Lamp" name="Lamp">
<translate sid="translate">4.07625 1.00545
5.90386</translate>
<rotate sid="rotateZ">0 0 1 106.93632</rotate>
<rotate sid="rotateY">0 1 0 3.16371</rotate>
<rotate sid="rotateX">1 0 0 37.26105</rotate>
<scale sid="scale">1.00000 1.00000
1.00000</scale>
<instance_light url="#Spot"/>
</node>
<node layer="L1" id="Camera" name="Camera">
<translate sid="translate">7.48113 -6.50764
5.34367</translate>
<rotate sid="rotateZ">0 0 1 46.69194</rotate>
<rotate sid="rotateY">0 1 0 0.61977</rotate>
<rotate sid="rotateX">1 0 0 63.55930</rotate>
<scale sid="scale">1.00000 1.00000
1.00000</scale>
<instance_camera url="#Camera-Camera"/>
</node>
</visual_scene>
</library_visual_scenes>
<scene>
<instance_visual_scene url="#Scene"/>
</scene>
</COLLADA>_______________________________________________
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