Add extrusion rate variance percent parameter for cura Arachne.

2 files changed, 10 insertions, 0 deletions

diff --git a/GcodeProcessorLib/utilities.cpp b/GcodeProcessorLib/utilities.cpp
index dbe23fb..041f91f 100644
--- a/GcodeProcessorLib/utilities.cpp
+++ b/GcodeProcessorLib/utilities.cpp
@@ -171,6 +171,15 @@ double utilities::get_percent_change(int v1, int v2)
 	return 0;
 }
 
+double utilities::get_percent_change(double v1, double v2)
+{
+	if (v1 != 0)
+	{
+		return ((v2 - v1) / v1) * 100.0;
+	}
+	return 0;
+}
+
 std::string utilities::get_percent_change_string(int v1, int v2, int precision)
 {
 	std::stringstream format_stream;
diff --git a/GcodeProcessorLib/utilities.h b/GcodeProcessorLib/utilities.h
index 401bed4..b41d6f6 100644
--- a/GcodeProcessorLib/utilities.h
+++ b/GcodeProcessorLib/utilities.h
@@ -49,6 +49,7 @@ public:
 	static std::istream& safe_get_line(std::istream& is, std::string& t);
 	static std::string center(std::string input, int width);
 	static double get_percent_change(int v1, int v2);
+	static double get_percent_change(double v1, double v2);
 	static std::string get_percent_change_string(int v1, int v2, int precision);
 
 	static int get_num_digits(int x);