/** astra_mex_data2d('change_geometry', id, geom);
*
* Change the associated geometry of a 2d data object (volume or sinogram)
* id: identifier of the 2d data object as stored in the astra-library.
* geom: the new geometry struct, as created by astra_create_vol/proj_geom
*/
void astra_mex_data2d_change_geometry(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
{
// step1: check input
if (nrhs < 3) {
mexErrMsgTxt("Not enough arguments. See the help document for a detailed argument list. \n");
return;
}
if (!mxIsDouble(prhs[1])) {
mexErrMsgTxt("Identifier should be a scalar value. \n");
return;
}
// step2: get data object
int iDataID = (int)(mxGetScalar(prhs[1]));
CFloat32Data2D* pDataObject = astra::CData2DManager::getSingleton().get(iDataID);
if (!pDataObject || !pDataObject->isInitialized()) {
mexErrMsgTxt("Data object not found or not initialized properly.\n");
return;
}
CFloat32ProjectionData2D* pSinogram = dynamic_cast<CFloat32ProjectionData2D*>(pDataObject);
if (pSinogram) {
// Projection data
// Read geometry
if (!mxIsStruct(prhs[2])) {
mexErrMsgTxt("Argument 3 is not a valid MATLAB struct.\n");
}
XMLDocument* xml = struct2XML("ProjectionGeometry", prhs[2]);
Config cfg;
cfg.self = xml->getRootNode();
// FIXME: Change how the base class is created. (This is duplicated
// in 'create' and Projector2D.cpp.)
std::string type = cfg.self->getAttribute("type");
CProjectionGeometry2D* pGeometry;
if (type == "sparse_matrix") {
pGeometry = new CSparseMatrixProjectionGeometry2D();
} else if (type == "fanflat") {
//CFanFlatProjectionGeometry2D* pFanFlatProjectionGeometry = new CFanFlatProjectionGeometry2D();
//pFanFlatProjectionGeometry->initialize(Config(node));
//m_pProjectionGeometry = pFanFlatProjectionGeometry;
pGeometry = new CFanFlatProjectionGeometry2D();
} else if (type == "fanflat_vec") {
pGeometry = new CFanFlatVecProjectionGeometry2D();
} else {
pGeometry = new CParallelProjectionGeometry2D();
}
if (!pGeometry->initialize(cfg)) {
mexErrMsgTxt("Geometry class not initialized. \n");
delete pGeometry;
delete xml;
return;
}
// If data is specified, check dimensions
if (pGeometry->getDetectorCount() != pSinogram->getDetectorCount() || pGeometry->getProjectionAngleCount() != pSinogram->getAngleCount()) {
mexErrMsgTxt("The dimensions of the data do not match those specified in the geometry. \n");
delete pGeometry;
delete xml;
return;
}
// If ok, change geometry
pSinogram->changeGeometry(pGeometry);
delete pGeometry;
delete xml;
return;
}
CFloat32VolumeData2D* pVolume = dynamic_cast<CFloat32VolumeData2D*>(pDataObject);
if (pVolume) {
// Volume data
// Read geometry
if (!mxIsStruct(prhs[2])) {
mexErrMsgTxt("Argument 3 is not a valid MATLAB struct.\n");
}
XMLDocument* xml = struct2XML(string("VolumeGeometry"), prhs[2]);
Config cfg;
cfg.self = xml->getRootNode();
CVolumeGeometry2D* pGeometry = new CVolumeGeometry2D();
if (!pGeometry->initialize(cfg)) {
mexErrMsgTxt("Geometry class not initialized. \n");
delete xml;
delete pGeometry;
return;
}
// If data is specified, check dimensions
if (pGeometry->getGridColCount() != pVolume->getWidth() || pGeometry->getGridRowCount() != pVolume->getHeight()) {
mexErrMsgTxt("The dimensions of the data do not match those specified in the geometry. \n");
delete xml;
delete pGeometry;
return;
}
// If ok, change geometry
pVolume->changeGeometry(pGeometry);
delete xml;
delete pGeometry;
}
mexErrMsgTxt("Data object not found or not initialized properly.\n");
return;
}
/** id = astra_mex_data2d('create', datatype, geometry, data);
*
* Create a new data 2d object in the astra-library.
* type: '-vol' for volume data, '-sino' for projection data
* geom: MATLAB struct with the geometry for the data
* data: Optional. Can be either a MATLAB matrix containing the data. In that case the dimensions
* should match that of the geometry of the object. It can also be a single value, in which case
* the entire data will be set to that value. If this isn't specified all values are set to 0.
* id: identifier of the 2d data object as it is now stored in the astra-library.
*/
void astra_mex_data2d_create(int& nlhs, mxArray* plhs[], int& nrhs, const mxArray* prhs[])
{
// step1: get datatype
if (nrhs < 3) {
mexErrMsgTxt("Not enough arguments. See the help document for a detailed argument list. \n");
return;
}
string sDataType = mex_util_get_string(prhs[1]);
CFloat32Data2D* pDataObject2D = NULL;
if (nrhs >= 4 && !(mex_is_scalar(prhs[3])|| mxIsDouble(prhs[3]) || mxIsLogical(prhs[3]) || mxIsSingle(prhs[3]) )) {
mexErrMsgTxt("Data must be single, double or logical.");
return;
}
if (mxIsSparse(prhs[2])) {
mexErrMsgTxt("Data may not be sparse.");
return;
}
// SWITCH DataType
if (sDataType == "-vol") {
// Read geometry
if (!mxIsStruct(prhs[2])) {
mexErrMsgTxt("Argument 3 is not a valid MATLAB struct.\n");
}
XMLDocument* xml = struct2XML(string("VolumeGeometry"), prhs[2]);
if (!xml)
return;
Config cfg;
cfg.self = xml->getRootNode();
CVolumeGeometry2D* pGeometry = new CVolumeGeometry2D();
if (!pGeometry->initialize(cfg)) {
mexErrMsgTxt("Geometry class not initialized. \n");
delete xml;
delete pGeometry;
return;
}
// If data is specified, check dimensions
if (nrhs >= 4 && !mex_is_scalar(prhs[3])) {
if (pGeometry->getGridColCount() != mxGetN(prhs[3]) || pGeometry->getGridRowCount() != mxGetM(prhs[3])) {
mexErrMsgTxt("The dimensions of the data do not match those specified in the geometry. \n");
delete xml;
delete pGeometry;
return;
}
}
// Initialize data object
pDataObject2D = new CFloat32VolumeData2D(pGeometry);
delete pGeometry;
delete xml;
}
else if (sDataType == "-sino") {
// Read geometry
if (!mxIsStruct(prhs[2])) {
mexErrMsgTxt("Argument 3 is not a valid MATLAB struct.\n");
}
XMLDocument* xml = struct2XML("ProjectionGeometry", prhs[2]);
if (!xml)
return;
Config cfg;
cfg.self = xml->getRootNode();
// FIXME: Change how the base class is created. (This is duplicated
// in 'change_geometry' and Projector2D.cpp.)
std::string type = cfg.self->getAttribute("type");
CProjectionGeometry2D* pGeometry;
if (type == "sparse_matrix") {
pGeometry = new CSparseMatrixProjectionGeometry2D();
} else if (type == "fanflat") {
//CFanFlatProjectionGeometry2D* pFanFlatProjectionGeometry = new CFanFlatProjectionGeometry2D();
//pFanFlatProjectionGeometry->initialize(Config(node));
//m_pProjectionGeometry = pFanFlatProjectionGeometry;
pGeometry = new CFanFlatProjectionGeometry2D();
} else if (type == "fanflat_vec") {
pGeometry = new CFanFlatVecProjectionGeometry2D();
} else {
pGeometry = new CParallelProjectionGeometry2D();
}
if (!pGeometry->initialize(cfg)) {
mexErrMsgTxt("Geometry class not initialized. \n");
delete pGeometry;
delete xml;
return;
}
// If data is specified, check dimensions
if (nrhs >= 4 && !mex_is_scalar(prhs[3])) {
if (pGeometry->getDetectorCount() != mxGetN(prhs[3]) || pGeometry->getProjectionAngleCount() != mxGetM(prhs[3])) {
mexErrMsgTxt("The dimensions of the data do not match those specified in the geometry. \n");
delete pGeometry;
delete xml;
return;
}
}
// Initialize data object
pDataObject2D = new CFloat32ProjectionData2D(pGeometry);
delete pGeometry;
delete xml;
}
else {
mexErrMsgTxt("Invalid datatype. Please specify '-vol' or '-sino'. \n");
return;
}
// Check initialization
if (!pDataObject2D->isInitialized()) {
mexErrMsgTxt("Couldn't initialize data object.\n");
delete pDataObject2D;
return;
}
// Store data
if (nrhs == 3) {
for (int i = 0; i < pDataObject2D->getSize(); ++i) {
pDataObject2D->getData()[i] = 0.0f;
}
}
// Store data
if (nrhs >= 4) {
// fill with scalar value
if (mex_is_scalar(prhs[3])) {
float32 fValue = (float32)mxGetScalar(prhs[3]);
for (int i = 0; i < pDataObject2D->getSize(); ++i) {
pDataObject2D->getData()[i] = fValue;
}
}
// fill with array value
else {
const mwSize* dims = mxGetDimensions(prhs[3]);
// Check Data dimensions
if (pDataObject2D->getWidth() != mxGetN(prhs[3]) || pDataObject2D->getHeight() != mxGetM(prhs[3])) {
mexErrMsgTxt("The dimensions of the data do not match those specified in the geometry. \n");
return;
}
// logical data
if (mxIsLogical(prhs[3])) {
bool* pbMatlabData = mxGetLogicals(prhs[3]);
int i = 0;
int col, row;
for (col = 0; col < dims[1]; ++col) {
for (row = 0; row < dims[0]; ++row) {
pDataObject2D->getData2D()[row][col] = (float32)pbMatlabData[i];
++i;
}
}
// double data
} else if (mxIsDouble(prhs[3])) {
double* pdMatlabData = mxGetPr(prhs[3]);
int i = 0;
int col, row;
for (col = 0; col < dims[1]; ++col) {
for (row = 0; row < dims[0]; ++row) {
pDataObject2D->getData2D()[row][col] = pdMatlabData[i];
++i;
}
}
// single data
} else if (mxIsSingle(prhs[3])) {
const float* pfMatlabData = (const float *)mxGetData(prhs[3]);
int i = 0;
int col, row;
for (col = 0; col < dims[1]; ++col) {
for (row = 0; row < dims[0]; ++row) {
pDataObject2D->getData2D()[row][col] = pfMatlabData[i];
++i;
}
}
} else {
ASTRA_ASSERT(false);
}
}
}
// step4: store data object
int iIndex = CData2DManager::getSingleton().store(pDataObject2D);
// step5: return data id
if (1 <= nlhs) {
plhs[0] = mxCreateDoubleScalar(iIndex);
}
}
CVolumeGeometry2D * CVolumeGeometry3D::createVolumeGeometry2D() const
{
CVolumeGeometry2D * pOutput = new CVolumeGeometry2D();
pOutput->initialize(getGridColCount(), getGridRowCount());
return pOutput;
}