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With AutoCAD drawing spline curve fitting tutorial

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  AutoAutoCAD2013 spline curve fitting refers to a fitting point drawn by specifying the spline.

  利用AutoCAD曲线拟合绘制样条曲线 三联

  Figure 01

  A draw spline:

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  Figure 02

  1.Click AutoAutoCAD2013 toolbar "Drawing" button; select "spline fit" from the pop-up menu; or execute the command: SPLINE

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  Figure 03

  2.AutoAutoCAD2013 command prompt:

  Specifies the first point (a point designated the first spline curve)

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  Figure 04

  3.Enter the next point (point designated second spline).

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  Figure 05

  4.Enter the next point (point designated third spline).

  5.Input of the next point (specified fourth spline points) Press the spacebar finish drawing.

  AutoAutoCAD2013 plotted in FIG spline:

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  Figure 06

  Second, the starting point of the tangential (T):

  Spline given tangential direction at the start of curve.Implementation of this option.

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  Figure 07

  AutoAutoCAD2013 command prompt:

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  Figure 08

  A simultaneous rubber band line between the start point and the current cursor, showing the tangential direction of the spline at the start of.At this time, a value can be entered directly represents the angle in the tangential direction, dragging the mouse may respond by way of.If "Specify starting tangential:" prompt dragging the mouse, the starting point of spline curve represents a rubber-band line tangential direction will change with the movement of the cursor point, while the shape of the respective spline curve also changes.After using this method to dynamically determine the tangential direction of the starting point of the spline, click the left mouse button.

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  Figure 09

  Third, the tolerance (L):

  The drawing spline fit tolerance given.

  Implementation of this option.

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  10

  AutoAutoCAD2013 command prompt:

  Specifying fit tolerance (e.g., 5 input after pressing the spacebar).

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  11

  Refers to a fit tolerance between the maximum allowed offset distance curve fitting and spotted.Obviously, if the fit tolerance is 0, the spline curve are drawn through the fitting point; if given fit tolerance, depicted by spline except the start and end, the other does not pass through the respective fit point.The latter method is particularly useful where a large number of fitting points of the point.

  Fourth, the mode (M)

  Which way to draw spline fitting with (as drawn in the above stated manner fit) or control points (explained in the next section drawing spline control points).

  Click Execute "mode" command:

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  12

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  13

  Fifth, the node (K)

  Control by fitting a curve shape Splines.

  Click the implementation of "nodes" option.

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  14

  AutoAutoCAD2013 command prompt:

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  15

  You can use the node parameter options selected spacing of the nodes, which will result in different curves shown in the examples.

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  16

  note

  In all cases, the best choice parameterized node does not exist.Chord length parameterization is often used, the square root of (radial) generally produce better parametric curve, depending on the data set.

  Sixth, the object (O):

  The spline fit polyline ( "spline (S)" implemented by the PEDIT command options, edit polyline Detailed tutorial) converted into equivalent spline and remove polylines.

  Click the implementation of the "Object (O)" command:

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

  17

  AutoCAD教程:利用AutoCAD曲线拟合绘制样条曲线

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  Note: please pay attention to more exciting triple AutoCAD Tutorial Tutorial section

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