--- a
+++ b/TrajectoriesSetting.h
@@ -0,0 +1,31 @@
+#pragma once
+
+
+// TrajectoriesSetting dialog
+
+class TrajectoriesSetting : public CDialogEx
+{
+	DECLARE_DYNAMIC(TrajectoriesSetting)
+
+public:
+	TrajectoriesSetting(CWnd* pParent = NULL);   // standard constructor
+	virtual ~TrajectoriesSetting();
+
+    int   m_nb_traj;
+    float m_starting_distance;
+    float m_step_size;
+    int m_col[3];
+
+// Dialog Data
+#ifdef AFX_DESIGN_TIME
+	enum { IDD = IDD_TRAJECTORIES_SETTING };
+#endif
+
+protected:
+	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
+    HBRUSH OnCtlColor(CDC* pDC, CWnd *pWnd, UINT nCtlColor);
+	DECLARE_MESSAGE_MAP()
+public:
+    afx_msg void OnBnClickedOk();
+    afx_msg void OnBnClickedButtonTrajColor();
+};