[2267] | 1 | /* |
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| 2 | * Additional functions used by the VTK visualiser |
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| 3 | * currently not used, since it is a pain to link on windows |
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| 4 | * |
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| 5 | */ |
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| 6 | |
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[2266] | 7 | #include "Python.h" |
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| 8 | #include "Numeric/arrayobject.h" |
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| 9 | |
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| 10 | #include "vtkPoints.h" |
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| 11 | #include "vtkPythonUtil.h" |
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| 12 | |
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| 13 | #include <malloc.h> |
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| 14 | |
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| 15 | static PyObject * make_vtkpoints(PyObject *self, PyObject *args); |
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| 16 | |
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| 17 | static PyMethodDef methods[] = { |
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| 18 | {"make_vtkpoints", make_vtkpoints, METH_VARARGS, "make vtkPoints structure"}, |
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| 19 | {NULL , NULL , 0 , NULL } |
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| 20 | }; |
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| 21 | |
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| 22 | PyMODINIT_FUNC initvtk_visualiser_ext(void){ |
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| 23 | (void) Py_InitModule("vtk_visualiser_ext", methods); |
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| 24 | import_array(); |
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| 25 | } |
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| 26 | |
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| 27 | /* Construct a vtkPoints object, given the number of triangles, |
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| 28 | * an array of vertex quantity values, an array of vertex x |
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| 29 | * and y coordinates and an array of triangle data. |
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| 30 | */ |
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| 31 | static PyObject * make_vtkpoints(PyObject *self, PyObject * args){ |
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| 32 | int i, j; |
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| 33 | int n_tri; |
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| 34 | int n_vert; |
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| 35 | double scale; |
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| 36 | PyArrayObject * qty_values; |
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| 37 | PyArrayObject * vertex_values; |
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| 38 | PyArrayObject * triangles; |
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| 39 | double * qty_index; |
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| 40 | vtkPoints * grid; |
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| 41 | int dims[1]; |
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| 42 | if(!PyArg_ParseTuple(args, "iidOOO", &n_tri, &n_vert, &scale, &qty_values, &vertex_values, &triangles)) |
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| 43 | return NULL; |
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| 44 | |
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| 45 | dims[0] = n_vert; |
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| 46 | qty_index = (double*)malloc(n_vert * sizeof(double)); |
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| 47 | if(qty_index == NULL) |
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| 48 | return NULL; |
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| 49 | |
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| 50 | for(i = 0 ; i < n_tri ; i++) |
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| 51 | for(j = 0 ; j < 3 ; j++) |
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| 52 | qty_index[*(int*)((triangles->data) + i*(triangles->strides[0]) + j*(triangles->strides[1]))] = |
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| 53 | *(double*)((qty_values->data) + i*(qty_values->strides[0]) + j*(qty_values->strides[1])) * scale; |
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| 54 | |
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| 55 | grid = vtkPoints::New(); |
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| 56 | for(i = 0 ; i < n_vert ; i++) |
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| 57 | grid->InsertNextPoint(*(double*)((vertex_values->data) + i*(vertex_values->strides[0])), |
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| 58 | *(double*)((vertex_values->data) + i*(vertex_values->strides[0]) + (vertex_values->strides[1])), |
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| 59 | qty_index[i]); |
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| 60 | free(qty_index); |
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| 61 | return Py_BuildValue("O", vtkPythonGetObjectFromPointer(grid)); |
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| 62 | } |
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