Esempio n. 1
0
void TransformerFunc::execute() {
    
    ComValue objv(stack_arg(0));
    ComValue transv(stack_arg(0));
    reset_stack();
    if (objv.object_compview()) {
      ComponentView* compview = (ComponentView*)objv.obj_val();
      if (compview && compview->GetSubject()) {
	OverlayComp* comp = (OverlayComp*)compview->GetSubject();
	Graphic* gr = comp->GetGraphic();
	if (gr) {
	  Transformer* trans = gr->GetTransformer();
	  if (transv.is_unknown() || !transv.is_array() || transv.array_val()->Number()!=6) {
	    AttributeValueList* avl = new AttributeValueList();
	    float a00, a01, a10, a11, a20, a21;
	    trans->matrix(a00, a01, a10, a11, a20, a21);
	    avl->Append(new AttributeValue(a00));
	    avl->Append(new AttributeValue(a01));
	    avl->Append(new AttributeValue(a10));
	    avl->Append(new AttributeValue(a11));
	    avl->Append(new AttributeValue(a20));
	    avl->Append(new AttributeValue(a21));
	    ComValue retval(avl);
	    push_stack(retval);

	  } else {
	    float a00, a01, a10, a11, a20, a21;
	    AttributeValueList* avl = transv.array_val();
	    Iterator it;
	    AttributeValue* av;

	    avl->First(it);
	    av = avl->GetAttrVal(it);
	    a00 = av->float_val();
	    avl->Next(it);
	    av = avl->GetAttrVal(it);
	    a01 = av->float_val();
	    avl->Next(it);
	    av = avl->GetAttrVal(it);
	    a10 = av->float_val();
	    avl->Next(it);
	    av = avl->GetAttrVal(it);
	    a11 = av->float_val();
	    avl->Next(it);
	    av = avl->GetAttrVal(it);
	    a20 = av->float_val();
	    avl->Next(it);
	    av = avl->GetAttrVal(it);
	    a21 = av->float_val();

	    Transformer t(a00, a01, a10, a11, a20, a21);
	    *gr->GetTransformer()=t;

	    ComValue compval(new OverlayViewRef(comp), comp->class_symid());
	    push_stack(compval);
	  }
	}
      } 	
    }
}
    inline inverse_transformer(Transformer const& input)
    {
        typedef boost::numeric::ublas::matrix<T> matrix_type;

        // create a working copy of the input
        matrix_type copy(input.matrix());

        // create a permutation matrix for the LU-factorization
        typedef boost::numeric::ublas::permutation_matrix<> permutation_matrix;
        permutation_matrix pm(copy.size1());

        // perform LU-factorization
        int res = boost::numeric::ublas::lu_factorize<matrix_type>(copy, pm);
        if( res == 0 )
        {
            // create identity matrix
            this->m_matrix.assign(boost::numeric::ublas::identity_matrix<T>(copy.size1()));

            // backsubstitute to get the inverse
            boost::numeric::ublas::lu_substitute(copy, pm, this->m_matrix);
        }
    }
Esempio n. 3
0
void print_t(const char* s, const Transformer& t) {
    float a00, a01, a10, a11, a20, a21;
    t.matrix(a00, a01, a10, a11, a20, a21);
    printf("%s transform %g %g %g %g %g %g\n", s, a00, a01, a10, a11, a20, a21);
}