Function PyUtilGetFrameData

Code/Source/PythonAPI/PyUtils.cxx:729–787

-------------------- PyUtilGetFrameData -------------------- Get the data used to define a coordinate frame. The input data can be 1) center and normal 2) PathFrame object Returns: pathPoint

// Returns: pathPoint
//
bool
PyUtilGetFrameData(PyUtilApiFunction& api, PyObject* centerArg, std::array<double,3>& center, 
     PyObject* normalArg, std::array<double,3>& normal, PyObject* frameObj, sv3::PathElement::PathPoint& pathPoint)
{
  // Get the center and normal data.
  //
  bool haveCenter = false;

  if ((centerArg != nullptr) || (normalArg != nullptr)) { 
      if ((centerArg == nullptr) || (normalArg == nullptr)) { 
          api.error("Both a 'center' and a 'normal' argument must be given.");
          return false;
      }
      std::string emsg;
      double cval[3];
      if (!PyUtilGetPointData(centerArg, emsg, cval)) { 
          api.error("The 'center' argument " + emsg);
          return false;
      }
      double nval[3];
      if (!PyUtilGetPointData(normalArg, emsg, nval)) { 
          api.error("The 'normal' argument " + emsg);
          return false;
      }

      for (int i = 0; i < 3; i++) {
         center[i] = cval[i];
         normal[i] = nval[i];
      }
      haveCenter = true;
  }

  if ((frameObj != nullptr) && haveCenter) {
      api.error("Both a 'center/normal' and 'frame' argument was given; only one is allowed.");
      return false;
  }

  if (haveCenter) {
      return true;
  }

  // Get the frame argument value.
  //
  if (frameObj != nullptr) {
      std::string emsg;
      if (!PyPathFrameGetData(frameObj, pathPoint.id, pathPoint.pos, pathPoint.rotation, pathPoint.tangent, emsg)) {
          api.error("The 'frame' argument " + emsg);
          return false;
      }
      center[0] = pathPoint.pos[0];
      center[1] = pathPoint.pos[1];
      center[2] = pathPoint.pos[2];
  } else {
      api.error("A 'center/normal' or 'frame' argument must be given.");
      return false;
  }

  return true;