ArrayBuffer* readPBFile(const std::string& _fileName) {
std::ifstream fileStream(_fileName.c_str(), std::ifstream::in);
if(!fileStream.good()) {
std::cerr << "could not open file " << _fileName << std::endl;
return NULL;
}
int vertexCount = 0;
fileStream >> vertexCount;
float* data = new float[vertexCount * 10]; // all files contain 3 pos float, 3 normal floats, 3 color floats and 1 splat size!
int pos = 0;
while(fileStream.good() && pos < (vertexCount * 10)) {
fileStream >> data[pos];
pos++;
}
fileStream.close();
ArrayBuffer* ab = new ArrayBuffer();
ab->setData(vertexCount * 10 * sizeof(float), data);
ab->defineAttribute("aPosition", GL_FLOAT, 3);
ab->defineAttribute("aNormal", GL_FLOAT, 3);
ab->defineAttribute("aColor", GL_FLOAT, 3);
ab->defineAttribute("aSplatSize", GL_FLOAT, 1);
delete[] data;
// ab holds a copy of the data on the GPU memory
return ab;
}
