CDispCollTri::CalcPlane

/* CDispCollTri::CalcPlane(CDispVector<Vector>&) */

void __thiscall CDispCollTri::CalcPlane(CDispCollTri *this,CDispVector *param_1)

{
  Vector *pVVar1;
  float *pfVar2;
  float *pfVar3;
  int iVar4;
  uint uVar5;
  float fVar6;
  float fVar7;
  float fVar8;
  float fVar9;
  float fVar10;
  float fVar11;
  
  pVVar1 = (Vector *)(this + 8);
  iVar4 = *(int *)param_1;
  pfVar2 = (float *)(iVar4 + (*(ushort *)this & 0x1ff) * 0xc);
  pfVar3 = (float *)(iVar4 + (*(ushort *)(this + 2) & 0x1ff) * 0xc);
  fVar6 = *pfVar3 - *pfVar2;
  fVar8 = pfVar3[1] - pfVar2[1];
  fVar10 = pfVar3[2] - pfVar2[2];
  pfVar3 = (float *)(iVar4 + (*(ushort *)(this + 4) & 0x1ff) * 0xc);
  fVar9 = *pfVar3 - *pfVar2;
  fVar7 = pfVar3[1] - pfVar2[1];
  fVar11 = pfVar3[2] - pfVar2[2];
  *(float *)(this + 8) = fVar7 * fVar10 - fVar11 * fVar8;
  *(float *)(this + 0xc) = fVar11 * fVar6 - fVar10 * fVar9;
  *(float *)(this + 0x10) = fVar8 * fVar9 - fVar6 * fVar7;
  VectorNormalize(pVVar1);
  uVar5 = 0;
  pfVar2 = (float *)(*(int *)param_1 + (*(ushort *)this & 0x1ff) * 0xc);
  fVar6 = pfVar2[1];
  fVar7 = *pfVar2;
  fVar8 = pfVar2[2];
  this[6] = (CDispCollTri)((byte)this[6] & 0xc0 | 0x28);
  *(float *)(this + 0x14) =
       fVar6 * *(float *)(this + 0xc) + fVar7 * *(float *)(this + 8) +
       fVar8 * *(float *)(this + 0x10);
  do {
    fVar6 = *(float *)(pVVar1 + uVar5 * 4);
    if (fVar6 < 0.0) {
      this[6] = (CDispCollTri)
                ((byte)this[6] & 0xf8 | ((byte)(1 << ((byte)uVar5 & 0x1f)) | (byte)this[6]) & 7);
      fVar6 = *(float *)(pVVar1 + uVar5 * 4);
    }
    if (fVar6 == 1.0) {
      this[6] = (CDispCollTri)((byte)this[6] & 199 | (byte)((uVar5 & 7) << 3));
    }
    uVar5 = uVar5 + 1;
  } while (uVar5 != 3);
  return;
}