Update edge_drawing_common.hpp

Author: sturkmen72

modules/ximgproc/src/edge_drawing_common.hpp

@@ -220,18 +220,19 @@ struct mEllipse {
 // Ax^2 + Bxy + Cy^2 + Dx + Ey + F = 0
 //
 struct EllipseEquation {
-	double coeff[7];  // coeff[1] = A
-
-	EllipseEquation() {
-		for (int i = 0; i<7; i++) coeff[i] = 0;
-	}
-
-	double A() { return coeff[1]; }
-	double B() { return coeff[2]; }
-	double C() { return coeff[3]; }
-	double D() { return coeff[4]; }
-	double E() { return coeff[5]; }
-	double F() { return coeff[6]; }
+    static constexpr int COEFF_SIZE = 7;
+    double coeff[COEFF_SIZE];  // coeff[1] = A
+
+    // Constructor using an initialization list
+    EllipseEquation() : coeff{} {}
+
+    // Accessor functions marked as const
+    double A() const { return coeff[1]; }
+    double B() const { return coeff[2]; }
+    double C() const { return coeff[3]; }
+    double D() const { return coeff[4]; }
+    double E() const { return coeff[5]; }
+    double F() const { return coeff[6]; }
 };
 
 // ================================ CIRCLES ================================