Add feature flags for changed scaling behaviour

2 files changed, 20 insertions, 2 deletions

diff --git a/include/astra/Features.h b/include/astra/Features.h
index d88ae71..c7ef98c 100644
--- a/include/astra/Features.h
+++ b/include/astra/Features.h
@@ -38,10 +38,22 @@ _AstraExport bool hasFeature(const std::string &feature);
 
 FEATURES:
 
-cuda: is cuda support compiled in?
+cuda
+	is cuda support compiled in?
 	NB: To check if there is also actually a usable GPU, use cudaAvailable()
 
-mex_link: is there support for the matlab command astra_mex_data3d('link')?
+mex_link
+	is there support for the matlab command astra_mex_data3d('link')?
+
+projectors_scaled_as_line_integrals
+	This is set since all 2D and 3D, CPU and GPU projectors scale their outputs
+	to approximate line integrals. (Previously, some 2D projectors were scaled
+	as area integrals.)
+
+fan_cone_BP_density_weighting_by_default
+	This is set since fan beam and cone beam BP operations perform ray density
+	weighting by default to more closely approximate the true mathematical adjoint.
+	The DensityWeighting cuda3d projector option is removed.
 
 For future backward-incompatible changes, extra features will be added here
 
diff --git a/src/Features.cpp b/src/Features.cpp
index 9114131..09a3499 100644
--- a/src/Features.cpp
+++ b/src/Features.cpp
@@ -34,6 +34,12 @@ _AstraExport bool hasFeature(const std::string &flag) {
 	if (flag == "cuda") {
 		return cudaEnabled();
 	}
+	if (flag == "projectors_scaled_as_line_integrals") {
+		return true;
+	}
+	if (flag == "fan_cone_BP_density_weighting_by_default") {
+		return true;
+	}
 
 	return false;
 }