zoukankan      html  css  js  c++  java
  • WPF中用于Path的Geometry MiniLanguage

    我们可以用下面的xaml代码画一个三角形
    <Path Stroke="Blue">
        
    <Path.Data>
            
    <PathGeometry>
                
    <PathFigure IsClosed="True" StartPoint="10,100">
                    
    <LineSegment Point="100,100" />
                    
    <LineSegment Point="100,50" />
                
    </PathFigure>
            
    </PathGeometry>
        
    </Path.Data>
    </Path>
    下面的xaml代码会画一个和上面代码相同的三角形
    <Path Stroke="Blue" Data="M 10,100 L 100,100 L 100,50 Z"/>
    第二段代码里面Data属性的值就是用Mini-Language定义的。下面是Geometry Mini-Language的命令说明
    Command           Description
    F                  value Sets the Geometry.FillRule property. Use 0 for EvenOdd, or 1 for NonZero.
                       This command must appear at the beginning of the string (if you decide to use it).
    M x,y               Creates a new PathFigure for the geometry and sets its start point. This
                       command must be used before any other commands except F. However, you
                       can also use it during your drawing sequence to move the origin of your
                       coordinate system. (The M stands for move.)
    L x,y                Creates a LineSegment to the specified point.
    H x                 Creates a horizontal LineSegment using the specified X value and keeping the
                       Y value constant.
    V y                 Creates a vertical LineSegment using the specified Y value and keeping the
                       X value constant.
    A radiusX, radiusY     Creates an ArcSegment to the indicated point. You specify the radii of the
    degrees isLargeArc,    ellipse that describes the arc, the number of degrees the arc is rotated, and
    isClockwise x,y        Boolean flags that set the IsLargeArc and SweepDirection properties
                       described earlier.
    C x1,y1 x2,y2 x,y      Creates a BezierSegment to the indicated point, using control points at
                       (x1, y1) and (x2, y2).
    Q x1, y1 x,y          Creates a QuadraticBezierSegment to the indicated point, with one control
                       point at (x1, y1).
    S x2,y2 x,y           Creates a smooth BezierSegment by using the second control point from the
                       previous BezierSegment as the first control point in the new BezierSegment.
    Z                  Ends the current PathFigure and sets IsClosed to true. You don’t need to use
                       this command if you don’t want to set IsClosed to true—instead, simply use M
                       if you want to start a new PathFigure or end the string.

  • 相关阅读:
    phpStudy for Linux (lnmp+lamp一键安装包)
    eq,neq,gt,lt等表达式缩写
    lnmp环境的使用
    lnmp环境的搭建
    箭头函数中的this
    Vue中实现路由懒加载及组件懒加载
    Vue项目中实现路由按需加载(路由懒加载)的3中方式:
    判断数据类型的方式以及各自的优缺点
    最近工作中踩的坑
    7种方法实现CSS左侧固定,右侧自适应布局
  • 原文地址:https://www.cnblogs.com/pdfw/p/1562063.html
Copyright © 2011-2022 走看看