/*! \page create_curve_page Curve To create a \b Curve in the <b>Main Menu</b> select <b>New Entity - > Basic - > Curve</b> There are three <b>Curve Construction</b> menu choices corresponding to three possible types of curves: Polyline, Besier or B-spline (Interpolated). The curve is defined by a list of \b Points through which it passes. \n There are two ways to define these <b>Points</b>: <ul> <li> <b>By Selection</b> manual picking of the points in the Object Browser or 3D Viewer. <li> <b>Analytical</b> parametric definition of the points through python expressions. </ul> \n The \b Result of each operation will be a GEOM_Object (edge). <b>Polyline</b> \image html polyline.png Polyline or polygonal chain is a connected series of line segments. It can be defined by the following parameters: \image html curve2.png <ul> <li><b>Points</b> at least 2 points which will serve as nodes on the curve.</li> <li><b>Build a closed wire</b> checkbox allows creating the curve as closed wire.</li> </ul> \n <b>TUI Command:</b> <em>geompy.MakePolyline(ListOfShapes,isClosed)</em> <b>Bezier</b> \image html bezier.png Bezier curve is a curve completely contained in a convex hull of its control points. It can be defined by the following parameters: \image html curve3.png <ul> <li><b>Points</b> at least 2 points used to approximate the curve.</li> <li><b>Build a closed edge</b> checkbox allows creating the curve as closed edge.</li> </ul> \n <b>TUI Command:</b> <em>geompy.MakeBezier(ListOfShapes,isClosed)</em> <b>B-spline</b> \image html interpol.png B-spline is a union of curve segments defined at each node span. It can be defined by the following parameters: \image html curve4.png <ul> <li><b>Points</b> at least 2 points which will serve as nodes on the curve.</li> <li><b>Build a closed edge</b> checkbox allows creating the curve as closed edge.</li> <li> If <b>Reorder vertices taking into account distances</b> is checked, the interpolation algorithm does not follow the order of vertices but searches for the closest vertex.</li> </ul> \n <b>TUI Command:</b> <em>geompy.MakeInterpol(ListOfShapes,isClosed,doReordering)</em> <b>Analytical Definition</b> The input parameters for analytical definition are common for all types of curves. \image html curve1.png <ul> <li><b>X(t)equation, Y(t)equation, Z(t)equation</b> are python expressions for X, Y and Z coordinates of the basic points of the curve.</li> <li><b>Min t, Max t</b> are minimum and maximum values of the parameter \b t.</li> <li><b>Step</b> is the number of steps of the parameter \b t.</li> </ul> \n <b>TUI Command:</b> <em>geompy.MakeCurveParametric(XExpr, YExpt, ZExpt, tMin, tMax, nbSteps, curveType, True)</em> \n<b>Advanced options</b> \ref preview_anchor "Preview" Our <b>TUI Scripts</b> provide you with useful examples of creation of \ref tui_creation_curve "Basic Geometric Objects". */