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#include "morphmesh.h"
sequence::sequence()
{
}
track::track()
{
}
/*
void track::addKey(float time,float weight)
{
keys.push_back(key(time,weight));
}
*/
float track::evaluate(float time)
{
//interpolate key track
if (time<=keys.begin()->first) return keys.begin()->second;
if (time>keys.rbegin()->first) return keys.rbegin()->second;
multimap< float,float >::iterator key2=keys.upper_bound( time );
multimap< float,float >::iterator key1=key2--;
float interval=key2->first-key1->first;
return (((1.0-((key2->first-time)/interval))*key2->second)+((1.0-((time-key1->first)/interval))*key1->second));
}
morphmesh::morphmesh()
{
loaded=false;
/*
//testing track function
track testrack;
testrack.keys.insert( pair<float,float>(0.0,2.0) );
testrack.keys.insert( pair<float,float>(1.0,4.0) );
testrack.keys.insert( pair<float,float>(0.5,10.0) );
for (float f=-0.4;f<1.4;f+=0.1) {
printf("%f : %f\n",f,testrack.evaluate(f));
}
*/
}
morphmesh::morphmesh(string filename)
{
morphmesh();
loadMesh(filename);
}
int morphmesh::getNumTargets(){
return morphs.size();
}
void morphmesh::draw() {
draw(0);
}
void morphmesh::draw(int target){
map<string,vector<ofVec3f> >::iterator it=morphs.begin();
for ( int i=0;i<target;i++ ) it++;
draw(it->first);
}
void morphmesh::draw(string target){
clearVertices();
addVertices(morphs[target]);
ofMesh::draw();
}
void morphmesh::draw(const vector<string>& targets, const vector<float>& weights){
clearVertices();
//normalise weights
int targetsNum=min(targets.size(),morphs.size());
float totalWeights=0;
for (int i=0;i<targetsNum;i++) totalWeights+=weights[i];
float weightFactor=1.0/totalWeights;
float bx,by,bz;
for (int j=0;j<morphs[targets[0]].size();j++) {
bx=by=bz=0;
for (int i=0;i<targetsNum;i++) {
bx+=morphs[targets[i]][j].x*weights[i];
by+=morphs[targets[i]][j].y*weights[i];
bz+=morphs[targets[i]][j].z*weights[i];
}
addVertex(ofVec3f(bx*weightFactor,by*weightFactor,bz*weightFactor));
}
ofMesh::draw();
}
bool morphmesh::loadMesh(string filename){
loaded=false;
ofxXmlSettings XML;
if( !XML.loadFile(filename) ){
printf("unable to load %s check data/ folder\n",filename.c_str());
}else{
if(XML.pushTag("Oak3DModelDocument")) {
if(XML.pushTag("MeshList")) {
int numMeshes=XML.getNumTags("Mesh");
vector<string> meshnames;
for (int i=0;i<numMeshes;i++) meshnames.push_back(XML.getAttribute("Mesh","Name","none",i));
for (int i=0;i<numMeshes;i++) {
XML.pushTag("Mesh",i);
if (XML.pushTag("AttributeList")) {
vector<ofVec3f> verts;
string vertstring=XML.getAttribute("Attribute","Data","none",0);
stringstream ss(vertstring);
istream_iterator<string> begin(ss);
istream_iterator<string> end;
vector<string> vstrings(begin, end);
for (int j=0;j<vstrings.size();j+=3) {
verts.push_back(ofVec3f(ofToFloat(vstrings[j]),ofToFloat(vstrings[j+1]),ofToFloat(vstrings[j+2])));
}
morphs[meshnames[i]]=verts;
if (i==0) {
addVertices(verts);
vector<ofVec3f> norms;
string normstring=XML.getAttribute("Attribute","Data","none",1);
stringstream ns(normstring);
istream_iterator<string> nbegin(ns);
istream_iterator<string> nend;
vector<string> nstrings(nbegin, nend);
for (int j=0;j<nstrings.size();j+=3) {
norms.push_back(ofVec3f(ofToFloat(nstrings[j]),ofToFloat(nstrings[j+1]),ofToFloat(nstrings[j+2])));
}
addNormals(norms);
vector<ofVec2f> texcords;
string texstring=XML.getAttribute("Attribute","Data","none",2);
stringstream ts(texstring);
istream_iterator<string> tbegin(ts);
istream_iterator<string> tend;
vector<string> tstrings(tbegin, tend);
for (int j=0;j<tstrings.size();j+=2) {
texcords.push_back(ofVec2f(ofToFloat(tstrings[j]),ofToFloat(tstrings[j+1])));
}
addTexCoords(texcords);
XML.popTag();
if (XML.pushTag("IndexList")) {
vector<ofIndexType> faces;
string facestring=XML.getAttribute("Index","Data","none",0);
stringstream fs(facestring);
istream_iterator<string> fbegin(fs);
istream_iterator<string> fend;
vector<string> fstrings(fbegin, fend);
for (int j=0;j<fstrings.size();j+=3) {
faces.push_back(ofIndexType(ofToInt(fstrings[j])));
faces.push_back(ofIndexType(ofToInt(fstrings[j+1])));
faces.push_back(ofIndexType(ofToInt(fstrings[j+2])));
}
addIndices(faces);
loaded=true;
XML.popTag();
}
}
else XML.popTag();
}
XML.popTag();
}
}
XML.popTag();
}
XML.popTag();
}
return loaded;
}
bool morphmesh::isLoaded()
{
return loaded;
}
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