CSheetSimulator::ComputeForces

/* CSheetSimulator::ComputeForces() */

void __thiscall CSheetSimulator::ComputeForces(CSheetSimulator *this)

{
  uint uVar1;
  int iVar2;
  float *pfVar3;
  int *piVar4;
  int iVar5;
  int iVar6;
  int iVar7;
  float fVar8;
  float fVar9;
  float fVar10;
  float fVar11;
  float fVar12;
  float fVar13;
  float fVar14;
  int local_30;
  float local_2c;
  float local_28;
  int local_20;
  
  if (0 < *(int *)(this + 0x28)) {
    iVar7 = 0;
    local_20 = 0;
    do {
      local_28 = *(float *)(this + 0x50);
      piVar4 = (int *)(*(int *)(this + 0x1c) + iVar7);
      uVar1 = piVar4[1];
      if ((int)uVar1 < 0) {
        pfVar3 = (float *)(*(int *)(this + 0x18) + ~uVar1 * 0xc);
        local_30 = *piVar4;
        iVar6 = *(int *)(this + 8);
        iVar2 = local_30 * 0x34 + iVar6;
        local_2c = *(float *)(iVar2 + 0x10);
        fVar12 = *(float *)(iVar2 + 4) - *pfVar3;
        fVar11 = *(float *)(iVar2 + 8) - pfVar3[1];
        fVar9 = *(float *)(iVar2 + 0xc) - pfVar3[2];
        fVar13 = *(float *)(iVar2 + 0x14);
        fVar10 = *(float *)(iVar2 + 0x18);
        local_28 = *(float *)(this + 0x4c);
      }
      else {
        iVar6 = *(int *)(this + 8);
        local_30 = *piVar4;
        iVar2 = uVar1 * 0x34 + iVar6;
        iVar5 = local_30 * 0x34 + iVar6;
        local_2c = *(float *)(iVar5 + 0x10) - *(float *)(iVar2 + 0x10);
        fVar12 = *(float *)(iVar5 + 4) - *(float *)(iVar2 + 4);
        fVar11 = *(float *)(iVar5 + 8) - *(float *)(iVar2 + 8);
        fVar9 = *(float *)(iVar5 + 0xc) - *(float *)(iVar2 + 0xc);
        fVar13 = *(float *)(iVar5 + 0x14) - *(float *)(iVar2 + 0x14);
        fVar10 = *(float *)(iVar5 + 0x18) - *(float *)(iVar2 + 0x18);
      }
      fVar8 = SQRT(fVar11 * fVar11 + fVar12 * fVar12 + fVar9 * fVar9);
      if (1e-06 <= fVar8) {
        fVar14 = 1.0 / fVar8;
        iVar6 = iVar6 + local_30 * 0x34;
        fVar13 = -((fVar13 * fVar11 * fVar14 + local_2c * fVar12 * fVar14 + fVar10 * fVar9 * fVar14)
                   * *(float *)(this + 0x54) + (fVar8 - (float)piVar4[2]) * local_28);
        fVar12 = fVar12 * fVar14 * fVar13;
        fVar10 = fVar11 * fVar14 * fVar13;
        fVar13 = fVar9 * fVar14 * fVar13;
        *(float *)(iVar6 + 0x1c) = *(float *)(iVar6 + 0x1c) + fVar12;
        *(float *)(iVar6 + 0x20) = *(float *)(iVar6 + 0x20) + fVar10;
        *(float *)(iVar6 + 0x24) = *(float *)(iVar6 + 0x24) + fVar13;
        iVar6 = *(int *)(*(int *)(this + 0x1c) + 4 + iVar7);
        if (-1 < iVar6) {
          iVar6 = iVar6 * 0x34 + *(int *)(this + 8);
          *(float *)(iVar6 + 0x1c) = *(float *)(iVar6 + 0x1c) - fVar12;
          *(float *)(iVar6 + 0x20) = *(float *)(iVar6 + 0x20) - fVar10;
          *(float *)(iVar6 + 0x24) = *(float *)(iVar6 + 0x24) - fVar13;
        }
      }
      local_20 = local_20 + 1;
      iVar7 = iVar7 + 0xc;
    } while (local_20 < *(int *)(this + 0x28));
  }
  iVar7 = 0;
  if (0 < *(int *)(this + 0x3c)) {
    do {
      iVar6 = iVar7 * 4;
      iVar7 = iVar7 + 1;
      pfVar3 = (float *)(*(int *)(*(int *)(this + 0x30) + iVar6) * 0x34 + *(int *)(this + 8));
      pfVar3[9] = pfVar3[9] - *(float *)(this + 0xa4) * *pfVar3;
    } while (iVar7 < *(int *)(this + 0x3c));
  }
  iVar7 = 0;
  iVar6 = 0;
  if (0 < *(int *)this * *(int *)(this + 4)) {
    do {
      iVar2 = *(int *)(this + 8) + iVar7;
      if (*(int *)(iVar2 + 0x2c) < 0) {
        fVar9 = *(float *)(iVar2 + 0x1c);
        fVar11 = *(float *)(iVar2 + 0x20);
        fVar12 = *(float *)(iVar2 + 0x24);
      }
      else {
        fVar9 = *(float *)(iVar2 + 0x1c);
        fVar11 = *(float *)(iVar2 + 0x20);
        fVar12 = *(float *)(iVar2 + 0x24);
        pfVar3 = (float *)(*(int *)(this + 0x90) + *(int *)(iVar2 + 0x2c) * 0x14);
        fVar13 = pfVar3[1];
        fVar10 = pfVar3[2];
        fVar8 = fVar13 * fVar11 + *pfVar3 * fVar9 + fVar10 * fVar12;
        if (fVar8 < 0.0) {
          *(float *)(iVar2 + 0x1c) = fVar9 - *pfVar3 * fVar8;
          *(float *)(iVar2 + 0x20) = fVar11 - fVar13 * fVar8;
          *(float *)(iVar2 + 0x24) = fVar12 - fVar8 * fVar10;
          iVar2 = *(int *)(this + 8) + iVar7;
          fVar9 = *(float *)(iVar2 + 0x1c);
          fVar11 = *(float *)(iVar2 + 0x20);
          fVar12 = *(float *)(iVar2 + 0x24);
        }
      }
      fVar13 = *(float *)(this + 0x58);
      iVar6 = iVar6 + 1;
      iVar7 = iVar7 + 0x34;
      *(float *)(iVar2 + 0x20) = fVar11 - *(float *)(iVar2 + 0x14) * fVar13;
      *(float *)(iVar2 + 0x24) = fVar12 - *(float *)(iVar2 + 0x18) * fVar13;
      *(float *)(iVar2 + 0x1c) = fVar9 - fVar13 * *(float *)(iVar2 + 0x10);
    } while (iVar6 < *(int *)this * *(int *)(this + 4));
  }
  return;
}