From 623e1924aeea83ea70c8ae7f645b067f17a293ea Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Wed, 28 Mar 2012 16:28:45 +0100
Subject: mesh loader and morpher working

---
 morpher/src/morphmesh.cpp | 104 +++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 99 insertions(+), 5 deletions(-)

(limited to 'morpher/src/morphmesh.cpp')

diff --git a/morpher/src/morphmesh.cpp b/morpher/src/morphmesh.cpp
index c8826f3..c617f6f 100644
--- a/morpher/src/morphmesh.cpp
+++ b/morpher/src/morphmesh.cpp
@@ -10,17 +10,111 @@ morphmesh::~morphmesh()
     //dtor
 }
 
-bool morphmesh::loadmesh(string filename){
+int morphmesh::getNumTargets(){
+	return targets.size();
+}
+
+void morphmesh::draw(int target){
+	clearVertices();
+	addVertices(targets[target]);
+	ofMesh::draw();
+}
+void morphmesh::draw(const vector<float>& targetBlend){
+	clearVertices();
+	//normalise weights
+	int weightsNum=min(targetBlend.size(),targets.size());
+	float totalWeights=0;
+	for (int i=0;i<weightsNum;i++) totalWeights+=targetBlend[i];
+	float weightFactor=1.0/totalWeights;
+	float bx,by,bz;
+	for (int j=0;j<targets[0].size();j++) {
+		bx=by=bz=0;
+		for (int i=0;i<weightsNum;i++) {
+			bx+=targets[i][j].x*targetBlend[i];
+			by+=targets[i][j].y*targetBlend[i];
+			bz+=targets[i][j].z*targetBlend[i];
+		}
+		addVertex(ofVec3f(bx*weightFactor,by*weightFactor,bz*weightFactor));
+	}
+	ofMesh::draw();
+}
+
+bool morphmesh::loadfile(string filename){
 	bool loaded=false;
 	ofxXmlSettings XML;
 	if( !XML.loadFile(filename) ){
 		printf("unable to load %s check data/ folder\n",filename.c_str());
 	}else{
-		if(XML.pushTag("MeshList")) {
-			int verts=ofToInt(XML.getAttribute("mesh","VertexCount","none",0));
-			int numMeshes=XML.getNumTags("Mesh");
-			
+		if(XML.pushTag("Oak3DModelDocument")) {
+			if(XML.pushTag("MeshList")) {
+				int numMeshes=XML.getNumTags("Mesh");
+				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])));
+							}
+							targets.push_back(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;
 }
\ No newline at end of file
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