Add MinPrecision parameter for minimum offset distance

RDFPlugin/CRDFPlugin.cpp

@@ -324,6 +324,15 @@ auto CRDFPlugin::LoadDrawingSettings(const std::optional<std::shared_ptr<CRDFScr
 				PLOGV << SETTING_HIGH_ALTITUDE << ": " << currentDrawSettings->highAltitude;
 			}
 		}
+		auto cstrMinPrecision = GetSetting(SETTING_MIN_PRECISION);
+		if (cstrMinPrecision.size())
+		{
+			int parsedPrecision = std::stoi(cstrMinPrecision);
+			if (parsedPrecision >= 0) {
+				currentDrawSettings->minPrecision = parsedPrecision;
+				PLOGV << SETTING_MIN_PRECISION << ": " << currentDrawSettings->minPrecision;
+			}
+		}
 		auto cstrLowPrecision = GetSetting(SETTING_LOW_PRECISION);
 		if (cstrLowPrecision.size())
 		{
@@ -443,6 +452,12 @@ auto CRDFPlugin::LoadDrawingStyle(const std::string& styleName) -> bool
 						PLOGV << SETTING_HIGH_ALTITUDE << ": " << currentDrawSettings->highAltitude;
 					}
 				}
+				else if (key == SETTING_MIN_PRECISION) {
+					if (val >= 0) {
+						currentDrawSettings->minPrecision = val;
+						PLOGV << SETTING_MIN_PRECISION << ": " << currentDrawSettings->minPrecision;
+					}
+				}
 				else if (key == SETTING_LOW_PRECISION) {
 					currentDrawSettings->lowPrecision = val;
 					PLOGV << SETTING_LOW_PRECISION << ": " << currentDrawSettings->lowPrecision;
@@ -565,8 +580,12 @@ auto CRDFPlugin::GenerateDrawPosition(const std::string& callsign) -> RDFCommon:
 						}
 						radius = offset;
 					}
-					if (offset > 0) { // add random offset
-						double distance = abs(disDistance(rdGenerator)) / 3.0 * offset;
+					if (offset > 0) {
+						double effectiveOffset = offset;
+						if (minPrecision > 0 && effectiveOffset < minPrecision) {
+							effectiveOffset = minPrecision;
+						}
+						double distance = abs(disDistance(rdGenerator)) / 3.0 * effectiveOffset;
 						double bearing = disBearing(rdGenerator);
 						RDFCommon::AddOffset(pos, bearing, distance);
 					}

RDFPlugin/CRDFScreen.cpp

@@ -178,6 +178,12 @@ auto CRDFScreen::OnCompileCommand(const char* sCommandLine) -> bool
 			return true;
 		}
 		int bufferPrecision;
+		if (sscanf_s(cmd.c_str(), "PRECISION M%d", &bufferPrecision) == 1) {
+			if (bufferPrecision >= 0) {
+				SaveDrawSetting(SETTING_MIN_PRECISION, "Precision (min)", std::to_string(bufferPrecision), asr);
+				return true;
+			}
+		}
 		if (sscanf_s(cmd.c_str(), "PRECISION L%d", &bufferPrecision) == 1) {
 			if (bufferPrecision >= 0) {
 				SaveDrawSetting(SETTING_LOW_PRECISION, "Precision (low)", std::to_string(bufferPrecision), asr);

RDFPlugin/RDFCommon.h

@@ -26,6 +26,7 @@ constexpr auto SETTING_CONCURRENT_RGB = "ConcurrentTransmissionRGB";
 constexpr auto SETTING_CIRCLE_RADIUS = "Radius";
 constexpr auto SETTING_THRESHOLD = "Threshold";
 constexpr auto SETTING_PRECISION = "Precision";
+constexpr auto SETTING_MIN_PRECISION = "MinPrecision";
 constexpr auto SETTING_LOW_ALTITUDE = "LowAltitude";
 constexpr auto SETTING_HIGH_ALTITUDE = "HighAltitude";
 constexpr auto SETTING_LOW_PRECISION = "LowPrecision";
@@ -83,6 +84,7 @@ namespace RDFCommon {
 		int circleThreshold;
 		int lowAltitude;
 		int highAltitude;
+		int minPrecision;
 		int lowPrecision;
 		int highPrecision;
 		bool drawController;
@@ -96,6 +98,7 @@ namespace RDFCommon {
 			circleThreshold = -1; // Default: -1 (always use pixel)
 			circlePrecision = 0; // Default: no offset (nautical miles), range: [0, +inf)
 			lowAltitude = 0; // Default: 0 (feet)
+			minPrecision = 0; // Default: 0 (nautical miles), range: [0, +inf)
 			lowPrecision = 0; // Default: 0 (nautical miles), range: [0, +inf)
 			highAltitude = 0; // Default: 0 (feet)
 			highPrecision = 0; // Default: 0 (nautical miles), range: [0, +inf)

README.md

@@ -104,14 +104,16 @@ This table shows all RDF drawing parameters. All entries allow per-ASR configura
   + `[Keyword]` and `[Value]` are the same as above.
   + Settings will be saved to ASR file.
   + E.g. `.RDF ASR DRAW 0` will disable RDF in current ASR.
-
 + `.RDF STYLE [Style Name]`
   + Designed for pre-defined scenarios and real-time switching.
   + Requires an **RDFStyle.json** file next to DLL file. [JSON format](#example---style)
   + `[Style Name]` is case-sensitive and must be exact match.
-  + Re-application is needed after hot-editting JSON file.
-  + STYLE settings will not be saved when exiting EuroScope.
-  + Use `.RDF STYLE OFF/0` or enter empty style name (keep the trailing ` `) to cancel style.
+  + Style will be cancelled when:
+    + using `.RDF STYLE OFF/0`.
+    + using empty style name but keep the trailing space.
+    + JSON file is broken or any error occurs.
+  + Re-application is needed after editting JSON file.
+  + STYLE settings will not be saved when exiting EuroScope. For lasting effect use per-ASR settings or plugin settings instead.
 
 ### Random Offset Schematic