Method UpdateAnimStateView

editor/AnimStatesDialog.cpp:470–532

Draws the object based on the current animation state

// Draws the object based on the current animation state
void CAnimStatesDialog::UpdateAnimStateView() {
  int mc = m_current_state;
  int anim = m_current_anim;
  CWnd *objectwnd;
  RECT rect;
  int x, y, bm_handle, w, h;
  static int frame = 0;
  grHardwareSurface surf;

  if (m_anim[mc].elem[anim].used != 1)
    return;

  // Bail out if the "to" frame is less than the "from" frame (ie backwards)
  if (m_anim[mc].elem[anim].to < m_anim[mc].elem[anim].from)
    return;

  float frame_diff = (float)abs(m_anim[mc].elem[anim].to - m_anim[mc].elem[anim].from);
  float frame_start = m_anim[mc].elem[anim].from;

  frame++;
  if (frame == NUM_ANIM_FRAMES)
    frame = 0;

  objectwnd = GetDlgItem(IDC_ANIMSTATE_VIEW);
  objectwnd->GetWindowRect(&rect);
  ScreenToClient(&rect);

  Desktop_surf->attach_to_window((unsigned)m_hWnd);

  w = rect.right - rect.left;
  h = rect.bottom - rect.top;

  bm_handle = m_render_handle; // GetObjectImage(m_current_id);

  vector zero_vector;
  vector view_vector = {0, 0, -20};
  matrix id_matrix, rot_matrix;
  poly_model *pm = GetPolymodelPointer(bm_handle);

  vm_MakeZero(&zero_vector);
  vm_MakeIdentity(&id_matrix);

  float norm_angles[MAX_SUBOBJECTS];
  float keyframe = frame_start + frame_diff * ((float)frame / (float)NUM_ANIM_FRAMES);

  SetNormalizedTimeAnim(keyframe, norm_angles, pm);

  vm_AnglesToMatrix(&rot_matrix, 0, m_SpinFrame * 400, 0);
  view_vector.z = -(fabs(pm->maxs.z - pm->mins.z) * 2);

  surf.create(128, 128, BPP_16);
  grViewport *vport = new grViewport(&surf);
  StartEditorFrame(vport, &view_vector, &id_matrix, D3_DEFAULT_ZOOM);
  DrawPolygonModel(&zero_vector, &rot_matrix, bm_handle, norm_angles, 0, 1.0, 1.0, 1.0);
  EndEditorFrame();

  x = rect.left + ((rect.right - rect.left) / 2) - surf.width() / 2;
  y = rect.top + ((rect.bottom - rect.top) / 2) - surf.height() / 2;