Transformation

VECTORPOINT Point; 

case WM_CHAR: 
switch( wParam ) 
{ 
   case 'x': 
   case 'X': 
   case 'y': 
   case 'Y': 
   case 'z': 
   case 'Z': 
   // get current rotation value 
   L_VecGetRotation ( &Vector, &Point ); 
   Point.x += ( wParam == 'x' || wParam == 'X' ) ? 5.0 : 0; 
   Point.y += ( wParam == 'y' || wParam == 'Y' ) ? 5.0 : 0; 
   Point.z += ( wParam == 'z' || wParam == 'Z' ) ? 5.0 : 0; 
   // set new rotation value 
   L_VecSetRotation ( &Vector, &Point, NULL, NULL, 0 ); 
   InvalidateRect( hWnd, NULL, FALSE ); 
   break; 
    
   case '+': 
   case '-': 
   // get current scale value 
   L_VecGetScale ( &Vector, &Point ); 
   Point.x += ( wParam == '+' ) ? 0.1 : -0.1; 
   Point.y += ( wParam == '+' ) ? 0.1 : -0.1; 
   Point.z += ( wParam == '+' ) ? 0.1 : -0.1; 
   // set new scale value 
   L_VecSetScale ( &Vector, &Point, NULL, NULL, 0 ); 
   InvalidateRect( hWnd, NULL, FALSE ); 
   break; 
} 
break; 
 
case WM_KEYDOWN: 
switch( wParam ) 
{ 
   case VK_UP: 
   case VK_DOWN: 
   case VK_LEFT: 
   case VK_RIGHT: 
   // get current translation 
   L_VecGetTranslation ( &Vector, &Point ); 
   if( wParam == VK_LEFT ) Point.x -= 1.0; 
      if( wParam == VK_RIGHT ) Point.x += 1.0; 
      if( wParam == VK_UP ) Point.y += 1.0; 
      if( wParam == VK_DOWN ) Point.y -= 1.0; 
      // set new translation value 
      L_VecSetTranslation ( &Vector, &Point, NULL, 0 ); 
   InvalidateRect( hWnd, NULL, FALSE ); 
   break; 
} 
break;