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next collada-iteration

pull/2966/head
Kim Kulling 2020-08-24 07:44:54 +02:00
parent 7adfe1f2d8
commit 904f17f29f
2 changed files with 254 additions and 401 deletions
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634
code/AssetLib/Collada/ColladaParser.cpp
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@ -826,12 +826,12 @@ void ColladaParser::ReadImage(XmlNode &node, Collada::Image &pImage) {
// we don't support, but which could confuse the loader if
// they're not skipped.
int v = currentNode.attribute("ref").as_int();
/* if (v y) {
/* if (v y) {
ASSIMP_LOG_WARN("Collada: Ignoring texture array index");
continue;
}*/
v = currentNode.attribute("mip_index").as_int();
v = currentNode.attribute("mip_index").as_int();
/*if (attrib != -1 && v > 0) {
ASSIMP_LOG_WARN("Collada: Ignoring MIP map layer");
continue;
@ -1023,7 +1023,6 @@ void ColladaParser::ReadLight(XmlNode &node, Collada::Light &pLight) {
pLight.mOuterAngle = ReadFloatFromTextContent();
}
}
}
// ------------------------------------------------------------------------------------------------
@ -1093,10 +1092,10 @@ void ColladaParser::ReadEffectProfileCommon(XmlNode &node, Collada::Effect &pEff
// save ID
std::string sid = currentNode.attribute("sid").as_string();
//std::string sid = GetAttribute("sid");
//= mReader->getAttributeValue(attrSID);
//= mReader->getAttributeValue(attrSID);
pEffect.mParams[sid] = EffectParam();
ReadEffectParam(currentNode, pEffect.mParams[sid]);
} else if (currentName == "technique" || currentName == "extra" ) {
} else if (currentName == "technique" || currentName == "extra") {
// just syntactic sugar
} else if (mFormat == FV_1_4_n && currentName == "image") {
// read ID. Another entry which is "optional" by design but obligatory in reality
@ -1196,15 +1195,15 @@ void ColladaParser::ReadSamplerProperties(XmlNode &node, Sampler &out) {
out.mMirrorU = ReadBoolFromTextContent();
} else if (currentName == "mirrorV") {
out.mMirrorV = ReadBoolFromTextContent();
} else if (currentName == "repeatU") {
} else if (currentName == "repeatU") {
out.mTransform.mScaling.x = ReadFloatFromTextContent();
} else if (currentName == "repeatV") {
out.mTransform.mScaling.y = ReadFloatFromTextContent();
} else if (currentName == "offsetU") {
} else if (currentName == "offsetU") {
out.mTransform.mTranslation.x = ReadFloatFromTextContent();
} else if (currentName == "offsetV") {
} else if (currentName == "offsetV") {
out.mTransform.mTranslation.y = ReadFloatFromTextContent();
} else if (currentName == "rotateUV") {
} else if (currentName == "rotateUV") {
out.mTransform.mRotation = ReadFloatFromTextContent();
} else if (currentName == "blend_mode") {
@ -1225,12 +1224,12 @@ void ColladaParser::ReadSamplerProperties(XmlNode &node, Sampler &out) {
// -------------------------------------------------------
else if (currentName == "weighting") {
out.mWeighting = ReadFloatFromTextContent();
} else if (currentName == "mix_with_previous_layer") {
} else if (currentName == "mix_with_previous_layer") {
out.mMixWithPrevious = ReadFloatFromTextContent();
}
// MAX3D extensions
// -------------------------------------------------------
else if (currentName == "amount") {
else if (currentName == "amount") {
out.mWeighting = ReadFloatFromTextContent();
}
}
@ -1262,84 +1261,26 @@ void ColladaParser::ReadEffectColor(XmlNode &node, aiColor4D &pColor, Sampler &p
SkipSpacesAndLineEnd(&content);
} else if (currentName == "texture") {
// get name of source texture/sampler
int attrTex = GetAttribute("texture");
pSampler.mName = mReader->getAttributeValue(attrTex);
XmlParser::getStdStrAttribute(currentNode, "texture", pSampler.mName);
// get name of UV source channel. Specification demands it to be there, but some exporters
// don't write it. It will be the default UV channel in case it's missing.
attrTex = TestAttribute("texcoord");
if (attrTex >= 0)
pSampler.mUVChannel = mReader->getAttributeValue(attrTex);
//SkipElement();
XmlParser::getStdStrAttribute(currentNode, "texcoord", pSampler.mUVChannel);
// as we've read texture, the color needs to be 1,1,1,1
pColor = aiColor4D(1.f, 1.f, 1.f, 1.f);
} else if (currentName == "technique" ) {
const int _profile = GetAttribute("profile");
const char *profile = mReader->getAttributeValue(_profile);
} else if (currentName == "technique") {
std::string profile;
XmlParser::getStdStrAttribute(currentNode, "profile", profile);
//const int _profile = GetAttribute("profile");
//const char *profile = mReader->getAttributeValue(_profile);
// Some extensions are quite useful ... ReadSamplerProperties processes
// several extensions in MAYA, OKINO and MAX3D profiles.
if (!::strcmp(profile, "MAYA") || !::strcmp(profile, "MAX3D") || !::strcmp(profile, "OKINO")) {
if (!::strcmp(profile.c_str(), "MAYA") || !::strcmp(profile.c_str(), "MAX3D") || !::strcmp(profile.c_str(), "OKINO")) {
// get more information on this sampler
ReadSamplerProperties(pSampler);
ReadSamplerProperties(currentNode, pSampler);
}
}
}
// Save current element name
const std::string curElem = mReader->getNodeName();
while (mReader->read()) {
if (mReader->getNodeType() == irr::io::EXN_ELEMENT) {
if (IsElement("color")) {
// text content contains 4 floats
const char *content = GetTextContent();
content = fast_atoreal_move<ai_real>(content, (ai_real &)pColor.r);
SkipSpacesAndLineEnd(&content);
content = fast_atoreal_move<ai_real>(content, (ai_real &)pColor.g);
SkipSpacesAndLineEnd(&content);
content = fast_atoreal_move<ai_real>(content, (ai_real &)pColor.b);
SkipSpacesAndLineEnd(&content);
content = fast_atoreal_move<ai_real>(content, (ai_real &)pColor.a);
SkipSpacesAndLineEnd(&content);
TestClosing("color");
} else if (IsElement("texture")) {
// get name of source texture/sampler
int attrTex = GetAttribute("texture");
pSampler.mName = mReader->getAttributeValue(attrTex);
// get name of UV source channel. Specification demands it to be there, but some exporters
// don't write it. It will be the default UV channel in case it's missing.
attrTex = TestAttribute("texcoord");
if (attrTex >= 0)
pSampler.mUVChannel = mReader->getAttributeValue(attrTex);
//SkipElement();
// as we've read texture, the color needs to be 1,1,1,1
pColor = aiColor4D(1.f, 1.f, 1.f, 1.f);
} else if (IsElement("technique")) {
const int _profile = GetAttribute("profile");
const char *profile = mReader->getAttributeValue(_profile);
// Some extensions are quite useful ... ReadSamplerProperties processes
// several extensions in MAYA, OKINO and MAX3D profiles.
if (!::strcmp(profile, "MAYA") || !::strcmp(profile, "MAX3D") || !::strcmp(profile, "OKINO")) {
// get more information on this sampler
ReadSamplerProperties(pSampler);
} else
SkipElement();
} else if (!IsElement("extra")) {
// ignore the rest
SkipElement();
}
} else if (mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
if (mReader->getNodeName() == curElem)
break;
}
}
}
@ -1347,67 +1288,41 @@ void ColladaParser::ReadEffectColor(XmlNode &node, aiColor4D &pColor, Sampler &p
// ------------------------------------------------------------------------------------------------
// Reads an effect entry containing a float
void ColladaParser::ReadEffectFloat(XmlNode &node, ai_real &pFloat) {
while (mReader->read()) {
if (mReader->getNodeType() == irr::io::EXN_ELEMENT) {
if (IsElement("float")) {
// text content contains a single floats
const char *content = GetTextContent();
content = fast_atoreal_move<ai_real>(content, pFloat);
SkipSpacesAndLineEnd(&content);
TestClosing("float");
} else {
// ignore the rest
SkipElement();
}
} else if (mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
break;
}
pFloat = 0.f;
if (node.name() == "float") {
XmlParser::getFloatAttribute(node, "float", pFloat);
}
}
// ------------------------------------------------------------------------------------------------
// Reads an effect parameter specification of any kind
void ColladaParser::ReadEffectParam(XmlNode &node, Collada::EffectParam &pParam) {
while (mReader->read()) {
if (mReader->getNodeType() == irr::io::EXN_ELEMENT) {
if (IsElement("surface")) {
// image ID given inside <init_from> tags
TestOpening("init_from");
const char *content = GetTextContent();
pParam.mType = Param_Surface;
pParam.mReference = content;
TestClosing("init_from");
if (node.empty()) {
return;
}
// don't care for remaining stuff
SkipElement("surface");
} else if (IsElement("sampler2D") && (FV_1_4_n == mFormat || FV_1_3_n == mFormat)) {
// surface ID is given inside <source> tags
TestOpening("source");
const char *content = GetTextContent();
pParam.mType = Param_Sampler;
pParam.mReference = content;
TestClosing("source");
for (XmlNode &currentNode : node.children()) {
const std::string &currentName = currentNode.name();
if (currentName == "surface") {
// image ID given inside <init_from> tags
const char *content = currentNode.value();
pParam.mType = Param_Surface;
pParam.mReference = content;
// don't care for remaining stuff
SkipElement("sampler2D");
} else if (IsElement("sampler2D")) {
// surface ID is given inside <instance_image> tags
TestOpening("instance_image");
int attrURL = GetAttribute("url");
const char *url = mReader->getAttributeValue(attrURL);
if (url[0] != '#')
ThrowException("Unsupported URL format in instance_image");
url++;
pParam.mType = Param_Sampler;
pParam.mReference = url;
SkipElement("sampler2D");
} else {
// ignore unknown element
SkipElement();
}
} else if (mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
break;
// don't care for remaining stuff
} else if (currentName == "sampler2D" && (FV_1_4_n == mFormat || FV_1_3_n == mFormat)) {
// surface ID is given inside <source> tags
const char *content = currentNode.value();
pParam.mType = Param_Sampler;
pParam.mReference = content;
} else if (currentName == "sampler2D") {
// surface ID is given inside <instance_image> tags
std::string url;
XmlParser::getStdStrAttribute(currentNode, "url", url);
if (url[0] != '#')
ThrowException("Unsupported URL format in instance_image");
pParam.mType = Param_Sampler;
pParam.mReference = url.c_str() + 1;
}
}
}
@ -1418,44 +1333,25 @@ void ColladaParser::ReadGeometryLibrary(XmlNode &node) {
if (node.empty()) {
return;
}
/*if (mReader->isEmptyElement())
return;*/
for (XmlNode &currentNode : node.children()) {
const std::string &currentName = currentNode.name();
if (currentName == "geometry") {
// read ID. Another entry which is "optional" by design but obligatory in reality
while (mReader->read()) {
if (mReader->getNodeType() == irr::io::EXN_ELEMENT) {
if (IsElement("geometry")) {
// read ID. Another entry which is "optional" by design but obligatory in reality
int indexID = GetAttribute("id");
std::string id = mReader->getAttributeValue(indexID);
std::string id;
XmlParser::getStdStrAttribute(currentNode, "id", id);
// create a mesh and store it in the library under its (resolved) ID
// Skip and warn if ID is not unique
if (mMeshLibrary.find(id) == mMeshLibrary.cend()) {
std::unique_ptr<Mesh> mesh(new Mesh(id));
// create a mesh and store it in the library under its (resolved) ID
// Skip and warn if ID is not unique
if (mMeshLibrary.find(id) == mMeshLibrary.cend()) {
std::unique_ptr<Mesh> mesh(new Mesh(id));
XmlParser::getStdStrAttribute(currentNode, "name", mesh->mName);
// read the mesh name if it exists
const int nameIndex = TestAttribute("name");
if (nameIndex != -1) {
mesh->mName = mReader->getAttributeValue(nameIndex);
}
// read on from there
ReadGeometry(*mesh);
// Read successfully, add to library
mMeshLibrary.insert({ id, mesh.release() });
} else {
ASSIMP_LOG_ERROR_F("Collada: Skipped duplicate geometry id: \"", id, "\"");
SkipElement();
}
} else {
// ignore the rest
SkipElement();
// read on from there
ReadGeometry(currentNode, *mesh);
// Read successfully, add to library
mMeshLibrary.insert({ id, mesh.release() });
}
} else if (mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
if (strcmp(mReader->getNodeName(), "library_geometries") != 0)
ThrowException("Expected end of <library_geometries> element.");
break;
}
}
}
@ -1466,23 +1362,10 @@ void ColladaParser::ReadGeometry(XmlNode &node, Collada::Mesh &pMesh) {
if (node.empty()) {
return;
}
/*if (mReader->isEmptyElement())
return;*/
while (mReader->read()) {
if (mReader->getNodeType() == irr::io::EXN_ELEMENT) {
if (IsElement("mesh")) {
// read on from there
ReadMesh(pMesh);
} else {
// ignore the rest
SkipElement();
}
} else if (mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
if (strcmp(mReader->getNodeName(), "geometry") != 0)
ThrowException("Expected end of <geometry> element.");
break;
for (XmlNode &currentNode : node.children()) {
const std::string &currentName = currentNode.name();
if (currentName == "mesh") {
ReadMesh(currentNode, pMesh);
}
}
}
@ -1493,34 +1376,15 @@ void ColladaParser::ReadMesh(XmlNode &node, Mesh &pMesh) {
if (node.empty()) {
return;
}
/*if (mReader->isEmptyElement())
return;*/
while (mReader->read()) {
if (mReader->getNodeType() == irr::io::EXN_ELEMENT) {
if (IsElement("source")) {
// we have professionals dealing with this
ReadSource();
} else if (IsElement("vertices")) {
// read per-vertex mesh data
ReadVertexData(pMesh);
} else if (IsElement("triangles") || IsElement("lines") || IsElement("linestrips") || IsElement("polygons") || IsElement("polylist") || IsElement("trifans") || IsElement("tristrips")) {
// read per-index mesh data and faces setup
ReadIndexData(pMesh);
} else {
// ignore the restf
SkipElement();
}
} else if (mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
if (strcmp(mReader->getNodeName(), "technique_common") == 0) {
// end of another meaningless element - read over it
} else if (strcmp(mReader->getNodeName(), "mesh") == 0) {
// end of <mesh> element - we're done here
break;
} else {
// everything else should be punished
ThrowException("Expected end of <mesh> element.");
}
for (XmlNode &currentNode : node.children()) {
const std::string &currentName = currentNode.name();
if (currentName == "source") {
ReadSource(currentNode);
} else if (currentName == "vertices") {
ReadVertexData(currentNode, pMesh);
} else if (currentName == "triangles" || currentName == "lines" || currentName == "linestrips" || currentName == "polygons" || currentName == "polylist" || currentName == "trifans" || currentName == "tristrips") {
ReadIndexData(currentNode, pMesh);
}
}
}
@ -1528,31 +1392,20 @@ void ColladaParser::ReadMesh(XmlNode &node, Mesh &pMesh) {
// ------------------------------------------------------------------------------------------------
// Reads a source element
void ColladaParser::ReadSource(XmlNode &node) {
int indexID = GetAttribute("id");
std::string sourceID = mReader->getAttributeValue(indexID);
if (node.empty()) {
return;
}
while (mReader->read()) {
if (mReader->getNodeType() == irr::io::EXN_ELEMENT) {
if (IsElement("float_array") || IsElement("IDREF_array") || IsElement("Name_array")) {
ReadDataArray();
} else if (IsElement("technique_common")) {
// I don't care for your profiles
} else if (IsElement("accessor")) {
ReadAccessor(sourceID);
} else {
// ignore the rest
SkipElement();
}
} else if (mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
if (strcmp(mReader->getNodeName(), "source") == 0) {
// end of <source> - we're done
break;
} else if (strcmp(mReader->getNodeName(), "technique_common") == 0) {
// end of another meaningless element - read over it
} else {
// everything else should be punished
ThrowException("Expected end of <source> element.");
}
std::string sourceID;
XmlParser::getStdStrAttribute(node, "id", sourceID);
for (XmlNode &currentNode : node.children()) {
const std::string &currentName = currentNode.name();
if (currentName == "float_array" || currentName == "IDREF_array" || currentName == "Name_array") {
ReadDataArray(currentNode);
} else if (currentName == "technique_common") {
// I don't care for your profiles
} else if (currentName == "accessor") {
ReadAccessor(currentNode, sourceID);
}
}
}
@ -1560,16 +1413,16 @@ void ColladaParser::ReadSource(XmlNode &node) {
// ------------------------------------------------------------------------------------------------
// Reads a data array holding a number of floats, and stores it in the global library
void ColladaParser::ReadDataArray(XmlNode &node) {
std::string elmName = mReader->getNodeName();
bool isStringArray = (elmName == "IDREF_array" || elmName == "Name_array");
bool isEmptyElement = mReader->isEmptyElement();
std::string name = node.name();
bool isStringArray = (name == "IDREF_array" || name == "Name_array");
bool isEmptyElement = node.empty();
// read attributes
int indexID = GetAttribute("id");
std::string id = mReader->getAttributeValue(indexID);
int indexCount = GetAttribute("count");
unsigned int count = (unsigned int)mReader->getAttributeValueAsInt(indexCount);
const char *content = TestTextContent();
std::string id;
XmlParser::getStdStrAttribute(node, "id", id);
int count;
XmlParser::getIntAttribute(node, "count", count);
const char *content = node.value();
// read values and store inside an array in the data library
mDataLibrary[id] = Data();
@ -1609,113 +1462,98 @@ void ColladaParser::ReadDataArray(XmlNode &node) {
}
}
}
// test for closing tag
if (!isEmptyElement)
TestClosing(elmName.c_str());
}
// ------------------------------------------------------------------------------------------------
// Reads an accessor and stores it in the global library
void ColladaParser::ReadAccessor(XmlNode &node, const std::string &pID) {
// read accessor attributes
int attrSource = GetAttribute("source");
const char *source = mReader->getAttributeValue(attrSource);
std::string source;
XmlParser::getStdStrAttribute(node, "source", source);
if (source[0] != '#')
ThrowException(format() << "Unknown reference format in url \"" << source << "\" in source attribute of <accessor> element.");
int attrCount = GetAttribute("count");
unsigned int count = (unsigned int)mReader->getAttributeValueAsInt(attrCount);
int attrOffset = TestAttribute("offset");
unsigned int offset = 0;
if (attrOffset > -1)
offset = (unsigned int)mReader->getAttributeValueAsInt(attrOffset);
int attrStride = TestAttribute("stride");
unsigned int stride = 1;
if (attrStride > -1)
stride = (unsigned int)mReader->getAttributeValueAsInt(attrStride);
int count;
XmlParser::getIntAttribute(node, "count", count);
unsigned int offset = 0;
if (XmlParser::hasAttribute(node, "offset")) {
XmlParser::getUIntAttribute(node, "offset", offset);
}
unsigned int stride = 1;
if (XmlParser::hasAttribute(node, "stride")) {
XmlParser::getUIntAttribute(node, "stride", stride);
}
// store in the library under the given ID
mAccessorLibrary[pID] = Accessor();
Accessor &acc = mAccessorLibrary[pID];
acc.mCount = count;
acc.mOffset = offset;
acc.mStride = stride;
acc.mSource = source + 1; // ignore the leading '#'
acc.mSource = source.c_str() + 1; // ignore the leading '#'
acc.mSize = 0; // gets incremented with every param
// and read the components
while (mReader->read()) {
if (mReader->getNodeType() == irr::io::EXN_ELEMENT) {
if (IsElement("param")) {
// read data param
int attrName = TestAttribute("name");
std::string name;
if (attrName > -1) {
name = mReader->getAttributeValue(attrName);
for (XmlNode &currentNode : node.children()) {
const std::string &currentName = currentNode.name();
if (currentName == "param") {
// read data param
//int attrName = TestAttribute("name");
std::string name;
if (XmlParser::hasAttribute(currentNode, "name")) {
XmlParser::getStdStrAttribute(currentNode, "name", name);
//name = mReader->getAttributeValue(attrName);
// analyse for common type components and store it's sub-offset in the corresponding field
// analyse for common type components and store it's sub-offset in the corresponding field
/* Cartesian coordinates */
if (name == "X")
acc.mSubOffset[0] = acc.mParams.size();
else if (name == "Y")
acc.mSubOffset[1] = acc.mParams.size();
else if (name == "Z")
acc.mSubOffset[2] = acc.mParams.size();
/* Cartesian coordinates */
if (name == "X")
acc.mSubOffset[0] = acc.mParams.size();
else if (name == "Y")
acc.mSubOffset[1] = acc.mParams.size();
else if (name == "Z")
acc.mSubOffset[2] = acc.mParams.size();
/* RGBA colors */
else if (name == "R")
acc.mSubOffset[0] = acc.mParams.size();
else if (name == "G")
acc.mSubOffset[1] = acc.mParams.size();
else if (name == "B")
acc.mSubOffset[2] = acc.mParams.size();
else if (name == "A")
acc.mSubOffset[3] = acc.mParams.size();
/* RGBA colors */
else if (name == "R")
acc.mSubOffset[0] = acc.mParams.size();
else if (name == "G")
acc.mSubOffset[1] = acc.mParams.size();
else if (name == "B")
acc.mSubOffset[2] = acc.mParams.size();
else if (name == "A")
acc.mSubOffset[3] = acc.mParams.size();
/* UVWQ (STPQ) texture coordinates */
else if (name == "S")
acc.mSubOffset[0] = acc.mParams.size();
else if (name == "T")
acc.mSubOffset[1] = acc.mParams.size();
else if (name == "P")
acc.mSubOffset[2] = acc.mParams.size();
// else if( name == "Q") acc.mSubOffset[3] = acc.mParams.size();
/* 4D uv coordinates are not supported in Assimp */
/* UVWQ (STPQ) texture coordinates */
else if (name == "S")
acc.mSubOffset[0] = acc.mParams.size();
else if (name == "T")
acc.mSubOffset[1] = acc.mParams.size();
else if (name == "P")
acc.mSubOffset[2] = acc.mParams.size();
// else if( name == "Q") acc.mSubOffset[3] = acc.mParams.size();
/* 4D uv coordinates are not supported in Assimp */
/* Generic extra data, interpreted as UV data, too*/
else if (name == "U")
acc.mSubOffset[0] = acc.mParams.size();
else if (name == "V")
acc.mSubOffset[1] = acc.mParams.size();
//else
// DefaultLogger::get()->warn( format() << "Unknown accessor parameter \"" << name << "\". Ignoring data channel." );
}
// read data type
int attrType = TestAttribute("type");
if (attrType > -1) {
// for the moment we only distinguish between a 4x4 matrix and anything else.
// TODO: (thom) I don't have a spec here at work. Check if there are other multi-value types
// which should be tested for here.
std::string type = mReader->getAttributeValue(attrType);
if (type == "float4x4")
acc.mSize += 16;
else
acc.mSize += 1;
}
acc.mParams.push_back(name);
// skip remaining stuff of this element, if any
SkipElement();
} else {
ThrowException(format() << "Unexpected sub element <" << mReader->getNodeName() << "> in tag <accessor>");
/* Generic extra data, interpreted as UV data, too*/
else if (name == "U")
acc.mSubOffset[0] = acc.mParams.size();
else if (name == "V")
acc.mSubOffset[1] = acc.mParams.size();
//else
// DefaultLogger::get()->warn( format() << "Unknown accessor parameter \"" << name << "\". Ignoring data channel." );
}
} else if (mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
if (strcmp(mReader->getNodeName(), "accessor") != 0)
ThrowException("Expected end of <accessor> element.");
break;
if (XmlParser::hasAttribute(currentNode, "type")) {
// read data type
// TODO: (thom) I don't have a spec here at work. Check if there are other multi-value types
// which should be tested for here.
std::string type;
XmlParser::getStdStrAttribute(currentNode, "type", type);
if (type == "float4x4")
acc.mSize += 16;
else
acc.mSize += 1;
}
acc.mParams.push_back(name);
}
}
}
@ -1724,22 +1562,13 @@ void ColladaParser::ReadAccessor(XmlNode &node, const std::string &pID) {
// Reads input declarations of per-vertex mesh data into the given mesh
void ColladaParser::ReadVertexData(XmlNode &node, Mesh &pMesh) {
// extract the ID of the <vertices> element. Not that we care, but to catch strange referencing schemes we should warn about
int attrID = GetAttribute("id");
pMesh.mVertexID = mReader->getAttributeValue(attrID);
// a number of <input> elements
while (mReader->read()) {
if (mReader->getNodeType() == irr::io::EXN_ELEMENT) {
if (IsElement("input")) {
ReadInputChannel(pMesh.mPerVertexData);
} else {
ThrowException(format() << "Unexpected sub element <" << mReader->getNodeName() << "> in tag <vertices>");
}
} else if (mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
if (strcmp(mReader->getNodeName(), "vertices") != 0)
ThrowException("Expected end of <vertices> element.");
break;
XmlParser::getStdStrAttribute(node, "id", pMesh.mVertexID);
for (XmlNode &currentNode : node.children()) {
const std::string &currentName = currentNode.name();
if (currentName == "input" ) {
ReadInputChannel(currentNode, pMesh.mPerVertexData);
} else {
ThrowException(format() << "Unexpected sub element <" << mReader->getNodeName() << "> in tag <vertices>");
}
}
}
@ -1750,80 +1579,76 @@ void ColladaParser::ReadIndexData(XmlNode &node, Mesh &pMesh) {
std::vector<size_t> vcount;
std::vector<InputChannel> perIndexData;
XmlParser::getIntAttribute(node, "count", (int) numPrimitives);
// read primitive count from the attribute
int attrCount = GetAttribute("count");
size_t numPrimitives = (size_t)mReader->getAttributeValueAsInt(attrCount);
//int attrCount = GetAttribute("count");
//size_t numPrimitives = (size_t)mReader->getAttributeValueAsInt(attrCount);
// some mesh types (e.g. tristrips) don't specify primitive count upfront,
// so we need to sum up the actual number of primitives while we read the <p>-tags
size_t actualPrimitives = 0;
// material subgroup
int attrMaterial = TestAttribute("material");
SubMesh subgroup;
if (attrMaterial > -1)
subgroup.mMaterial = mReader->getAttributeValue(attrMaterial);
if (XmlParser::hasAttribute("material")) {
XmlParser::getStdStrAttribute(node, "material", subgroup.mMaterial);
}
// material subgroup
// int attrMaterial = TestAttribute("material");
//if (attrMaterial > -1)
// subgroup.mMaterial = mReader->getAttributeValue(attrMaterial);
// distinguish between polys and triangles
std::string elementName = mReader->getNodeName();
std::string elementName = node.name();
PrimitiveType primType = Prim_Invalid;
if (IsElement("lines"))
if (elementName == "lines")
primType = Prim_Lines;
else if (IsElement("linestrips"))
else if (elementName == "linestrips")
primType = Prim_LineStrip;
else if (IsElement("polygons"))
else if (elementName == "polygons")
primType = Prim_Polygon;
else if (IsElement("polylist"))
else if (elementName == "polylist")
primType = Prim_Polylist;
else if (IsElement("triangles"))
else if (elementName == "triangles")
primType = Prim_Triangles;
else if (IsElement("trifans"))
else if (elementName == "trifans")
primType = Prim_TriFans;
else if (IsElement("tristrips"))
else if (elementName == "tristrips")
primType = Prim_TriStrips;
ai_assert(primType != Prim_Invalid);
// also a number of <input> elements, but in addition a <p> primitive collection and probably index counts for all primitives
while (mReader->read()) {
if (mReader->getNodeType() == irr::io::EXN_ELEMENT) {
if (IsElement("input")) {
ReadInputChannel(perIndexData);
} else if (IsElement("vcount")) {
if (!mReader->isEmptyElement()) {
if (numPrimitives) // It is possible to define a mesh without any primitives
{
// case <polylist> - specifies the number of indices for each polygon
const char *content = GetTextContent();
vcount.reserve(numPrimitives);
for (unsigned int a = 0; a < numPrimitives; a++) {
if (*content == 0)
ThrowException("Expected more values while reading <vcount> contents.");
// read a number
vcount.push_back((size_t)strtoul10(content, &content));
// skip whitespace after it
SkipSpacesAndLineEnd(&content);
}
for (XmlNode &currentNode : node.children()) {
const std::string &currentName = currentNode.name();
if (currentName == "input") {
ReadInputChannel(currentNode, perIndexData);
} else if (currentName == "vcount") {
if (!currentNode.empty()) {
if (numPrimitives) // It is possible to define a mesh without any primitives
{
// case <polylist> - specifies the number of indices for each polygon
const char *content = GetTextContent();
vcount.reserve(numPrimitives);
for (unsigned int a = 0; a < numPrimitives; a++) {
if (*content == 0)
ThrowException("Expected more values while reading <vcount> contents.");
// read a number
vcount.push_back((size_t)strtoul10(content, &content));
// skip whitespace after it
SkipSpacesAndLineEnd(&content);
}
TestClosing("vcount");
}
} else if (IsElement("p")) {
if (!mReader->isEmptyElement()) {
// now here the actual fun starts - these are the indices to construct the mesh data from
actualPrimitives += ReadPrimitives(pMesh, perIndexData, numPrimitives, vcount, primType);
}
} else if (IsElement("extra")) {
SkipElement("extra");
} else if (IsElement("ph")) {
SkipElement("ph");
} else {
ThrowException(format() << "Unexpected sub element <" << mReader->getNodeName() << "> in tag <" << elementName << ">");
}
} else if (mReader->getNodeType() == irr::io::EXN_ELEMENT_END) {
if (mReader->getNodeName() != elementName)
ThrowException(format() << "Expected end of <" << elementName << "> element.");
break;
} else if (currentName == "p") {
if (!currentNode.empty()) {
// now here the actual fun starts - these are the indices to construct the mesh data from
actualPrimitives += ReadPrimitives(currentNode, pMesh, perIndexData, numPrimitives, vcount, primType);
}
} else if (currentName == "extra") {
// skip
} else if (currentName == "ph") {
// skip
} else {
ThrowException(format() << "Unexpected sub element <" << mReader->getNodeName() << "> in tag <" << elementName << ">");
}
}
@ -1845,21 +1670,28 @@ void ColladaParser::ReadInputChannel(XmlNode &node, std::vector<InputChannel> &p
InputChannel channel;
// read semantic
int attrSemantic = GetAttribute("semantic");
std::string semantic = mReader->getAttributeValue(attrSemantic);
std::string semantic;
XmlParser::getStdStrAttribute(node, "semantic", semantic);
//int attrSemantic = GetAttribute("semantic");
//std::string semantic = mReader->getAttributeValue(attrSemantic);
channel.mType = GetTypeForSemantic(semantic);
// read source
int attrSource = GetAttribute("source");
const char *source = mReader->getAttributeValue(attrSource);
std::string source;
XmlParser::getStdStrAttribute(node, "source", source);
//int attrSource = GetAttribute("source");
//const char *source = mReader->getAttributeValue(attrSource);
if (source[0] != '#')
ThrowException(format() << "Unknown reference format in url \"" << source << "\" in source attribute of <input> element.");
channel.mAccessor = source + 1; // skipping the leading #, hopefully the remaining text is the accessor ID only
channel.mAccessor = source.c_str() + 1; // skipping the leading #, hopefully the remaining text is the accessor ID only
// read index offset, if per-index <input>
int attrOffset = TestAttribute("offset");
if (attrOffset > -1)
channel.mOffset = mReader->getAttributeValueAsInt(attrOffset);
if (XmlParser::hasAttribute("offset")) {
XmlParser::getStdStrAttribute(node, "offset", channel.mOffset);
}
//int attrOffset = TestAttribute("offset");
//if (attrOffset > -1)
// channel.mOffset = mReader->getAttributeValueAsInt(attrOffset);
// read set if texture coordinates
if (channel.mType == IT_Texcoord || channel.mType == IT_Color) {

21
include/assimp/XmlParser.h
View File

@ -158,6 +158,16 @@ public:
return !attr.empty();
}
static inline bool getUIntAttribute(XmlNode &xmlNode, const char *name, unsigned int &val) {
pugi::xml_attribute attr = xmlNode.attribute(name);
if (attr.empty()) {
return false;
}
val = attr.as_uint();
return true;
}
static inline bool getIntAttribute(XmlNode &xmlNode, const char *name, int &val ) {
pugi::xml_attribute attr = xmlNode.attribute(name);
if (attr.empty()) {
@ -168,6 +178,17 @@ public:
return true;
}
static inline bool getFloatAttribute( XmlNode &xmlNode, const char *name, float &val ) {
pugi::xml_attribute attr = xmlNode.attribute(name);
if (attr.empty()) {
return false;
}
val = attr.as_float();
return true;
}
static inline bool getStdStrAttribute(XmlNode &xmlNode, const char *name, std::string &val) {
pugi::xml_attribute attr = xmlNode.attribute(name);
if (attr.empty()) {