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;
}
void ofApp::drawRectangle(float x, float y, float w, float h)
{
static ofVbo vbo;
vector<ofVec3f> vertices = { ofVec3f(x, y, 0), ofVec3f(x + w, y, 0), ofVec3f(x + w, y + h, 0) , ofVec3f(x, y + h, 0) };
vector<ofFloatColor> colors(4, ofGetStyle().color);
if (!vbo.getIsAllocated())
{
vector<ofVec2f> texCoords = { ofVec2f(0, 0), ofVec2f(1, 0), ofVec2f(1, 1), ofVec2f(0, 1) };
vector<ofVec3f> normals(4, ofVec3f(0, 0, 1));
vector<ofIndexType> indices = { 0, 2, 1, 0, 3, 2 };
vbo.setVertexData(&vertices[0].x, 3, vertices.size(), GL_DYNAMIC_DRAW);
vbo.setColorData(&colors[0].r, colors.size(), GL_DYNAMIC_DRAW);
vbo.setTexCoordData(&texCoords[0].x, texCoords.size(), GL_STATIC_DRAW);
vbo.setNormalData(&normals[0].x, normals.size(), GL_STATIC_DRAW);
vbo.setIndexData(&indices[0], indices.size(), GL_STATIC_DRAW);
}
else
{
vbo.updateVertexData(&vertices[0].x, vertices.size());
vbo.updateColorData(&colors[0].r, colors.size());
}
vbo.drawElements(GL_TRIANGLES, vbo.getNumIndices());
}
