diff options
Diffstat (limited to 'python')
| -rw-r--r-- | python/astra/PyIncludes.pxd | 15 | ||||
| -rw-r--r-- | python/astra/data3d.py | 11 | ||||
| -rw-r--r-- | python/astra/data3d_c.pyx | 55 |
3 files changed, 81 insertions, 0 deletions
diff --git a/python/astra/PyIncludes.pxd b/python/astra/PyIncludes.pxd index 7df02c5..a581f88 100644 --- a/python/astra/PyIncludes.pxd +++ b/python/astra/PyIncludes.pxd @@ -196,18 +196,29 @@ cdef extern from "astra/VolumeGeometry3D.h" namespace "astra": CVolumeGeometry3D() bool initialize(Config) Config * getConfiguration() + int getGridColCount() + int getGridRowCount() + int getGridSliceCount() cdef extern from "astra/ProjectionGeometry3D.h" namespace "astra": cdef cppclass CProjectionGeometry3D: CProjectionGeometry3D() bool initialize(Config) Config * getConfiguration() + int getProjectionCount() + int getDetectorColCount() + int getDetectorRowCount() cdef extern from "astra/Float32VolumeData3DMemory.h" namespace "astra": cdef cppclass CFloat32VolumeData3DMemory: CFloat32VolumeData3DMemory(CVolumeGeometry3D*) CVolumeGeometry3D* getGeometry() + void changeGeometry(CVolumeGeometry3D*) + int getRowCount() + int getColCount() + int getSliceCount() + cdef extern from "astra/ParallelProjectionGeometry3D.h" namespace "astra": @@ -232,6 +243,10 @@ cdef extern from "astra/Float32ProjectionData3DMemory.h" namespace "astra": CFloat32ProjectionData3DMemory(CProjectionGeometry3D*) CFloat32ProjectionData3DMemory(CConeProjectionGeometry3D*) CProjectionGeometry3D* getGeometry() + void changeGeometry(CProjectionGeometry3D*) + int getDetectorColCount() + int getDetectorRowCount() + int getAngleCount() cdef extern from "astra/Float32Data3D.h" namespace "astra": cdef cppclass CFloat32Data3D: diff --git a/python/astra/data3d.py b/python/astra/data3d.py index a2e9201..4679489 100644 --- a/python/astra/data3d.py +++ b/python/astra/data3d.py @@ -90,6 +90,17 @@ def get_geometry(i): """ return d.get_geometry(i) +def change_geometry(i, geometry): + """Change the geometry of a 3D object. + + :param i: ID of object. + :type i: :class:`int` + :param geometry: Volume or projection geometry. + :type geometry: :class:`dict` + + """ + return d.change_geometry(i, geometry) + def dimensions(i): """Get dimensions of a 3D object. diff --git a/python/astra/data3d_c.pyx b/python/astra/data3d_c.pyx index 4b069f7..48af032 100644 --- a/python/astra/data3d_c.pyx +++ b/python/astra/data3d_c.pyx @@ -122,6 +122,61 @@ def get_geometry(i): raise Exception("Not a known data object") return geom +def change_geometry(i, geom): + cdef CFloat32Data3DMemory * pDataObject = dynamic_cast_mem(getObject(i)) + cdef CFloat32ProjectionData3DMemory * pDataObject2 + cdef CFloat32VolumeData3DMemory * pDataObject3 + if pDataObject.getType() == THREEPROJECTION: + pDataObject2 = <CFloat32ProjectionData3DMemory * >pDataObject + # TODO: Reduce code duplication here + cfg = utils.dictToConfig(six.b('ProjectionGeometry'), geom) + tpe = wrap_from_bytes(cfg.self.getAttribute(six.b('type'))) + if (tpe == "parallel3d"): + ppGeometry = <CProjectionGeometry3D*> new CParallelProjectionGeometry3D(); + elif (tpe == "parallel3d_vec"): + ppGeometry = <CProjectionGeometry3D*> new CParallelVecProjectionGeometry3D(); + elif (tpe == "cone"): + ppGeometry = <CProjectionGeometry3D*> new CConeProjectionGeometry3D(); + elif (tpe == "cone_vec"): + ppGeometry = <CProjectionGeometry3D*> new CConeVecProjectionGeometry3D(); + else: + raise Exception("Invalid geometry type.") + if not ppGeometry.initialize(cfg[0]): + del cfg + del ppGeometry + raise Exception('Geometry class not initialized.') + del cfg + if (ppGeometry.getDetectorColCount() != pDataObject2.getDetectorColCount() or \ + ppGeometry.getProjectionCount() != pDataObject2.getAngleCount() or \ + ppGeometry.getDetectorRowCount() != pDataObject2.getDetectorRowCount()): + del ppGeometry + raise Exception( + "The dimensions of the data do not match those specified in the geometry.") + pDataObject2.changeGeometry(ppGeometry) + del ppGeometry + + elif pDataObject.getType() == THREEVOLUME: + pDataObject3 = <CFloat32VolumeData3DMemory * >pDataObject + cfg = utils.dictToConfig(six.b('VolumeGeometry'), geom) + pGeometry = new CVolumeGeometry3D() + if not pGeometry.initialize(cfg[0]): + del cfg + del pGeometry + raise Exception('Geometry class not initialized.') + del cfg + if (pGeometry.getGridColCount() != pDataObject3.getColCount() or \ + pGeometry.getGridRowCount() != pDataObject3.getRowCount() or \ + pGeometry.getGridSliceCount() != pDataObject3.getSliceCount()): + del pGeometry + raise Exception( + "The dimensions of the data do not match those specified in the geometry.") + pDataObject3.changeGeometry(pGeometry) + del pGeometry + + else: + raise Exception("Not a known data object") + + cdef fillDataObject(CFloat32Data3DMemory * obj, data): if data is None: fillDataObjectScalar(obj, 0) |