/[escript]/trunk/escript/src/DataArray.cpp
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Annotation of /trunk/escript/src/DataArray.cpp

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Revision 82 - (hide annotations)
Tue Oct 26 06:53:54 2004 UTC (16 years, 5 months ago) by jgs
Original Path: trunk/esys2/escript/src/Data/DataArray.cpp
File size: 2931 byte(s)
Initial revision

1 jgs 82 /*
2     ******************************************************************************
3     * *
4     * COPYRIGHT ACcESS 2004 - All Rights Reserved *
5     * *
6     * This software is the property of ACcESS. No part of this code *
7     * may be copied in any form or by any means without the expressed written *
8     * consent of ACcESS. Copying, use or modification of this software *
9     * by any unauthorised person is illegal unless that person has a software *
10     * license agreement with ACcESS. *
11     * *
12     ******************************************************************************
13     */
14    
15     #include "escript/Data/DataArray.h"
16    
17     #include <boost/python/numeric.hpp>
18     #include <boost/python/extract.hpp>
19    
20     using namespace boost::python;
21     using namespace std;
22    
23     namespace escript {
24    
25     DataArray::DataArray(double value)
26     {
27     //
28     // The default is a scalar, an empty shape vector is interpreted
29     // as a scalar.
30     m_data.push_back(value);
31     //
32     // create a view with an empty shape type
33     m_dataView.reset(new DataArrayView(m_data,DataArrayView::ShapeType()));
34     }
35    
36     DataArray::DataArray(const DataArrayView::ShapeType& shape,
37     double value)
38     {
39     m_data.resize(DataArrayView::noValues(shape),value);
40     m_dataView.reset(new DataArrayView(m_data,shape));
41     }
42    
43     DataArray::DataArray(const DataArray& value):
44     m_data(value.getData())
45     {
46     m_dataView.reset(new DataArrayView(m_data,value.getView().getShape()));
47     }
48    
49     DataArray::DataArray(const DataArrayView& value):
50     m_data(value.getData())
51     {
52     m_dataView.reset(new DataArrayView(m_data,value.getShape()));
53     }
54    
55     DataArray::DataArray(const object& value)
56     {
57     //
58     // this will throw if the value cannot be represented
59     numeric::array asNumArray(value);
60     initialise(asNumArray);
61     }
62    
63     DataArray::DataArray(const boost::python::numeric::array& value)
64     {
65     initialise(value);
66     }
67    
68     void
69     DataArray::initialise(const boost::python::numeric::array& value)
70     {
71     //
72     // extract the shape from the numarray
73     DataArrayView::ShapeType tempShape;
74     for (int i=0; i<value.getrank(); ++i) {
75     tempShape.push_back(extract<int>(value.getshape()[i]));
76     }
77     //
78     // allocate the space
79     m_data.resize(DataArrayView::noValues(tempShape));
80     m_dataView.reset(new DataArrayView(m_data,tempShape));
81     m_dataView->copy(value);
82     }
83    
84     const DataArrayView&
85     DataArray::getView() const
86     {
87     return *m_dataView;
88     }
89    
90     DataArrayView&
91     DataArray::getView()
92     {
93     return *m_dataView;
94     }
95    
96     const DataArrayView::ValueType&
97     DataArray::getData() const
98     {
99     return m_data;
100     }
101    
102     DataArrayView::ValueType&
103     DataArray::getData()
104     {
105     return m_data;
106     }
107    
108     } // end of namespace

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