int CloudsVisualSystemLaplacianTunnel::loadMesh(ofVbo &vbo, string path) {
char* buffer;
long size;
//cout << "path is " << path << endl;
ifstream data( ofToDataPath(path, true).c_str(), ios::in | ios::binary);
data.seekg(0, ios::end);
size = data.tellg();
data.seekg(0, ios::beg);
buffer = new char[size];
data.read(buffer, size);
data.close();
unsigned int *ints = (unsigned int *) buffer;
int numPts = ints[0];
int numTriangles = ints[1];
float *pts = (float *) (ints+2);
for(int i = 0; i < numPts; i++){
ofVec3f p(pts[i*3+0],pts[i*3+1],pts[i*3+2]);
center += p;
min = ofVec3f(MIN(min.x,p.x),
MIN(min.y,p.y),
MIN(min.z,p.z));
max = ofVec3f(MAX(max.x,p.x),
MAX(max.y,p.y),
MAX(max.z,p.z));
}
center /= numPts;
unsigned int * indices = ints + 2 + numPts*6;
//not sure what is enable or disable by default
vbo.enableIndices();
vbo.enableNormals();
vbo.disableColors();
vbo.disableTexCoords();
vbo.setVertexData(pts,3,numPts,GL_STATIC_DRAW,sizeof(float)*3);
vbo.setNormalData(pts+numPts*3,numPts,GL_STATIC_DRAW,sizeof(float)*3);
vbo.setIndexData(indices,numTriangles*3,GL_STATIC_DRAW);
//cout << "File " << path << " has " << numTriangles << " triangles " << endl;
return numTriangles*3;
}
/**
* Add a quad to the mesh with clockwise front face vertex order
*/
void addQuad(ofVec3f const & bottomLeft, ofVec3f const & topLeft, ofVec3f const & topRight, ofVec3f const & bottomRight) {
mesh.enableNormals();
vbo.enableNormals();
ofVec3f v1 = topLeft;
ofVec3f v2 = topRight;
ofVec3f v3 = bottomRight;
ofVec3f v4 = bottomLeft;
ofVec3f v1N, v2N, v3N, v4N;
v1N = crossProd(v1,v2,v3);
v3N = crossProd(v3,v4,v1);
v2N = crossProd(v2,v1,v4);
v4N = crossProd(v4,v3,v2);
mesh.addVertex(v4);
mesh.addNormal(v4N);
mesh.addVertex(v1);
mesh.addNormal(v1N);
mesh.addVertex(v2);
mesh.addNormal(v2N);
mesh.addVertex(v3);
mesh.addNormal(v3N);
}
