Merge branch 'parallel_vec'

1 files changed, 66 insertions, 6 deletions

diff --git a/include/astra/GeometryUtil2D.h b/include/astra/GeometryUtil2D.h
index 6434d3c..914e40d 100644
--- a/include/astra/GeometryUtil2D.h
+++ b/include/astra/GeometryUtil2D.h
@@ -30,17 +30,77 @@ along with the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
 
 namespace astra {
 
+struct SParProjection {
+	// the ray direction
+	float fRayX, fRayY;
+
+	// the start of the (linear) detector
+	float fDetSX, fDetSY;
+
+	// the length of a single detector pixel
+	float fDetUX, fDetUY;
+
+
+	void translate(double dx, double dy) {
+		fDetSX += dx;
+		fDetSY += dy;
+	}
+	void scale(double factor) {
+		fRayX *= factor;
+		fRayY *= factor;
+		fDetSX *= factor;
+		fDetSY *= factor;
+		fDetUX *= factor;
+		fDetUY *= factor;
+	}
+};
+
+
 struct SFanProjection {
-        // the source
-        float fSrcX, fSrcY;
+	// the source
+	float fSrcX, fSrcY;
+
+	// the start of the (linear) detector
+	float fDetSX, fDetSY;
 
-        // the start of the (linear) detector
-        float fDetSX, fDetSY;
+	// the length of a single detector pixel
+	float fDetUX, fDetUY;
 
-        // the length of a single detector pixel
-        float fDetUX, fDetUY;
+	void translate(double dx, double dy) {
+		fSrcX += dx;
+		fSrcY += dy;
+		fDetSX += dx;
+		fDetSY += dy;
+	}
+	void scale(double factor) {
+		fSrcX *= factor;
+		fSrcY *= factor;
+		fDetSX *= factor;
+		fDetSY *= factor;
+		fDetUX *= factor;
+		fDetUY *= factor;
+	}
 };
 
+
+
+SParProjection* genParProjections(unsigned int iProjAngles,
+                                  unsigned int iProjDets,
+                                  double fDetSize,
+                                  const float *pfAngles,
+                                  const float *pfExtraOffsets);
+
+SFanProjection* genFanProjections(unsigned int iProjAngles,
+                                  unsigned int iProjDets,
+                                  double fOriginSource, double fOriginDetector,
+                                  double fDetSize,
+                                  const float *pfAngles);
+
+bool getParParameters(const SParProjection &proj, unsigned int iProjDets, float &fAngle, float &fDetSize, float &fOffset);
+
+bool getFanParameters(const SFanProjection &proj, unsigned int iProjDets, float &fAngle, float &fOriginSource, float &fOriginDetector, float &fDetSize, float &fOffset);
+
+
 }
 
 #endif