mirror of
https://github.com/c-sooyoung/fold_slice.git
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144 lines
3.9 KiB
C++
144 lines
3.9 KiB
C++
/*
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-----------------------------------------------------------------------
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Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp
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2014-2015, CWI, Amsterdam
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Contact: astra@uantwerpen.be
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Website: http://sf.net/projects/astra-toolbox
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This file is part of the ASTRA Toolbox.
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The ASTRA Toolbox is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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The ASTRA Toolbox is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
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-----------------------------------------------------------------------
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$Id$
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*/
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#ifndef _INC_ASTRA_GEOMETRYUTIL3D
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#define _INC_ASTRA_GEOMETRYUTIL3D
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namespace astra {
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struct SConeProjection {
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// the source
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double fSrcX, fSrcY, fSrcZ;
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// the origin ("bottom left") of the (flat-panel) detector
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double fDetSX, fDetSY, fDetSZ;
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// the U-edge of a detector pixel
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double fDetUX, fDetUY, fDetUZ;
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// the V-edge of a detector pixel
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double fDetVX, fDetVY, fDetVZ;
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void translate(double dx, double dy, double dz) {
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fSrcX += dx;
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fSrcY += dy;
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fSrcZ += dz;
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fDetSX += dx;
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fDetSY += dy;
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fDetSZ += dz;
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}
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void scale(double factor) {
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fSrcX *= factor;
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fSrcY *= factor;
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fSrcZ *= factor;
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fDetSX *= factor;
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fDetSY *= factor;
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fDetSZ *= factor;
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fDetUX *= factor;
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fDetUY *= factor;
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fDetUZ *= factor;
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fDetVX *= factor;
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fDetVY *= factor;
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fDetVZ *= factor;
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}
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};
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struct SPar3DProjection {
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// the ray direction
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double fRayX, fRayY, fRayZ;
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// the origin ("bottom left") of the (flat-panel) detector
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double fDetSX, fDetSY, fDetSZ;
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// the U-edge of a detector pixel
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double fDetUX, fDetUY, fDetUZ;
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// the V-edge of a detector pixel
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double fDetVX, fDetVY, fDetVZ;
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void translate(double dx, double dy, double dz) {
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fDetSX += dx;
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fDetSY += dy;
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fDetSZ += dz;
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}
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void scale(double factor) {
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fRayX *= factor;
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fRayY *= factor;
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fRayZ *= factor;
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fDetSX *= factor;
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fDetSY *= factor;
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fDetSZ *= factor;
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fDetUX *= factor;
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fDetUY *= factor;
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fDetUZ *= factor;
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fDetVX *= factor;
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fDetVY *= factor;
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fDetVZ *= factor;
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}
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};
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void computeBP_UV_Coeffs(const SPar3DProjection& proj,
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double &fUX, double &fUY, double &fUZ, double &fUC,
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double &fVX, double &fVY, double &fVZ, double &fVC);
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void computeBP_UV_Coeffs(const SConeProjection& proj,
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double &fUX, double &fUY, double &fUZ, double &fUC,
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double &fVX, double &fVY, double &fVZ, double &fVC,
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double &fDX, double &fDY, double &fDZ, double &fDC);
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SConeProjection* genConeProjections(unsigned int iProjAngles,
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unsigned int iProjU,
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unsigned int iProjV,
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double fOriginSourceDistance,
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double fOriginDetectorDistance,
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double fDetUSize,
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double fDetVSize,
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const float *pfAngles);
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SPar3DProjection* genPar3DProjections(unsigned int iProjAngles,
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unsigned int iProjU,
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unsigned int iProjV,
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double fDetUSize,
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double fDetVSize,
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const float *pfAngles);
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}
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#endif
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