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-rw-r--r--include/astra/ProjectionGeometry3D.h19
1 files changed, 17 insertions, 2 deletions
diff --git a/include/astra/ProjectionGeometry3D.h b/include/astra/ProjectionGeometry3D.h
index 19ac3ab..0b60287 100644
--- a/include/astra/ProjectionGeometry3D.h
+++ b/include/astra/ProjectionGeometry3D.h
@@ -317,9 +317,24 @@ public:
* @param iAngleIndex the index of the angle to use
* @param fU,fV the projected point.
*/
- virtual void projectPoint(float32 fX, float32 fY, float32 fZ,
+ virtual void projectPoint(double fX, double fY, double fZ,
int iAngleIndex,
- float32 &fU, float32 &fV) const = 0;
+ double &fU, double &fV) const = 0;
+
+ /* Backproject a point onto a plane parallel to a coordinate plane.
+ * The 2D point coordinates are the (unrounded) indices of the detector
+ * column and row. The output is in 3D coordinates in units.
+ * are in units. The output fU,fV are the (unrounded) indices of the
+ * detector column and row.
+ * This may fall outside of the actual detector.
+ */
+ virtual void backprojectPointX(int iAngleIndex, double fU, double fV,
+ double fX, double &fY, double &fZ) const = 0;
+ virtual void backprojectPointY(int iAngleIndex, double fU, double fV,
+ double fY, double &fX, double &fZ) const = 0;
+ virtual void backprojectPointZ(int iAngleIndex, double fU, double fV,
+ double fZ, double &fX, double &fY) const = 0;
+
/** Returns true if the type of geometry defined in this class is the one specified in _sType.
*