CCoreDispSurface::FindSurfPointStartIndex

/* CCoreDispSurface::FindSurfPointStartIndex() */

void __thiscall CCoreDispSurface::FindSurfPointStartIndex(CCoreDispSurface *this)

{
  int iVar1;
  int iVar2;
  CCoreDispSurface *pCVar3;
  float fVar4;
  float fVar5;
  
  if (*(int *)(this + 0x198) != -1) {
    return;
  }
  iVar2 = 0;
  fVar5 = 1e+09;
  iVar1 = -1;
  pCVar3 = this;
  do {
    fVar4 = (*(float *)(this + 0x19c) - *(float *)(pCVar3 + 8)) *
            (*(float *)(this + 0x19c) - *(float *)(pCVar3 + 8)) +
            (*(float *)(this + 0x1a4) - *(float *)(pCVar3 + 0x10)) *
            (*(float *)(this + 0x1a4) - *(float *)(pCVar3 + 0x10)) +
            (*(float *)(this + 0x1a0) - *(float *)(pCVar3 + 0xc)) *
            (*(float *)(this + 0x1a0) - *(float *)(pCVar3 + 0xc));
    if (fVar4 < fVar5) {
      iVar1 = iVar2;
      fVar5 = fVar4;
    }
    iVar2 = iVar2 + 1;
    pCVar3 = pCVar3 + 0xc;
  } while (iVar2 != 4);
  *(int *)(this + 0x198) = iVar1;
  return;
}