working version

data_acq_and_processing/common_cpp/config/include/run_config.hpp

@@ -116,15 +116,20 @@ struct PreprocessConfig {
 };
 
 struct GprTxGeometry {
-    // Transmitter geometry keyed by output switch position.
+    // Transmitter geometry keyed by output switch position. y_m/z_m default to 0 so
+    // legacy 1D configs continue to render in the y=0, z=0 plane.
     std::uint32_t output_pos = 0;
     float x_m = 0.0F;
+    float y_m = 0.0F;
+    float z_m = 0.0F;
 };
 
 struct GprRxGeometry {
-    // Receiver geometry keyed by input switch position.
+    // Receiver geometry keyed by input switch position. y_m/z_m default to 0.
     std::uint32_t input_pos = 0;
     float x_m = 0.0F;
+    float y_m = 0.0F;
+    float z_m = 0.0F;
 };
 
 struct GprConfig {

data_acq_and_processing/common_cpp/config/src/run_config.cpp

@@ -309,6 +309,8 @@ void validate_gpr_config(const GprConfig& config, const RunConfig& run_config) {
             GprTxGeometry entry{};
             entry.output_pos = optional_u32(*entry_obj, "output_pos", 0U);
             entry.x_m = optional_f32(*entry_obj, "x_m", 0.0F);
+            entry.y_m = optional_f32(*entry_obj, "y_m", 0.0F);
+            entry.z_m = optional_f32(*entry_obj, "z_m", 0.0F);
             config.tx_geometry.push_back(std::move(entry));
         }
     }
@@ -321,6 +323,8 @@ void validate_gpr_config(const GprConfig& config, const RunConfig& run_config) {
             GprRxGeometry entry{};
             entry.input_pos = optional_u32(*entry_obj, "input_pos", 0U);
             entry.x_m = optional_f32(*entry_obj, "x_m", 0.0F);
+            entry.y_m = optional_f32(*entry_obj, "y_m", 0.0F);
+            entry.z_m = optional_f32(*entry_obj, "z_m", 0.0F);
             config.rx_geometry.push_back(std::move(entry));
         }
     }