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  • SWT:gc.drawPolyline

    千次阅读 2011-02-24 23:04:00
    //GC.drawPolyline(int[] pointArray);这条语句绘制了一系列互相连接的线段,作为参数的数组用于描述点的位置  gc.drawPolyline(pointArray);//若要形成闭合的图形,第一个点和最后一个点坐标必须一致

    //GC.drawPolyline(int[] pointArray);这条语句绘制了一系列互相连接的线段,作为参数的数组用于描述点的位置
     gc.drawPolyline(pointArray);//若要形成闭合的图形,第一个点和最后一个点坐标必须一致

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  • Qt painter drawPolyline in paintEvent

    千次阅读 2013-06-20 10:35:21
    void MainWindow::paintEvent(QPaintEvent *w) { QPainter p(this); p.setPen(QPen(Qt::red,10)); QPointF pt(19,19);... p.drawPolyline(pts,10); } 环境 Qt4.8.4 in windows vs2010
    void MainWindow::paintEvent(QPaintEvent *w)
    {
        QPainter p(this);
        p.setPen(QPen(Qt::red,10));
        QPointF pt(19,19);
        QPointF pts[10];
        int t=QTime::currentTime().second();
        qsrand(t);
        for(int i=0;i<10;i++)
        {
    
            pt.setX(qrand()%200);
            pt.setY(qrand()%300);
            pts[i]=pt;
        }
        p.drawPolyline(pts,10);
    }
    

    环境 Qt4.8.4 in windows vs2010


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  • OK, so there's a Line2D and a Rectangle2D that can be used by Graphics2D.draw() instead of Graphics.drawLine() and Graphics.drawRectangle().Is there a similar "upgrade" for Graphics.drawPolyLine()?...

    OK, so there's a Line2D and a Rectangle2D that can be used by Graphics2D.draw() instead of Graphics.drawLine() and Graphics.drawRectangle().

    Is there a similar "upgrade" for Graphics.drawPolyLine()?

    解决方案

    Have a look at Path2D. It is a Shape and should thus be able to be drawn through Graphics2D.draw().

    Example usage:

    import java.awt.*;

    import java.awt.geom.Path2D;

    import javax.swing.*;

    public class FrameTestBase extends JFrame {

    public static void main(String args[]) {

    FrameTestBase t = new FrameTestBase();

    t.add(new JComponent() {

    public void paintComponent(Graphics g) {

    Path2D p = new Path2D.Double();

    p.moveTo(15, 15);

    p.lineTo(150, 75);

    p.lineTo(100, 10);

    p.lineTo(10, 100);

    ((Graphics2D) g).draw(p);

    }

    });

    t.setDefaultCloseOperation(EXIT_ON_CLOSE);

    t.setSize(200, 200);

    t.setVisible(true);

    }

    }

    5FnZK.png

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  • 效果 多边形:drawPolygon:...折线段:drawPolyline: 代码 package Test; import javax.swing.*; import java.awt.*; public class TestFrame extends JFrame { public TestFrame(){ setTitle("DrawArcs"); ...

    效果

    多边形:drawPolygon:
    在这里插入图片描述

    折线段:drawPolyline:
    在这里插入图片描述

    代码

    package Test;
    
    
    import javax.swing.*;
    import java.awt.*;
    
    public class TestFrame extends JFrame {
        public TestFrame(){
            setTitle("DrawArcs");
            add(new ArcsPanel());
        }
    
        public static void main(String[] args) {
            TestFrame frame=new TestFrame();
            frame.setTitle("TestFigurePanel");
            frame.setSize(400,200);
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
        }
    }
    
    class ArcsPanel extends JPanel{
        protected void paintComponent(Graphics g){
            super.paintComponent(g);
    
            int x[]={40,70,60,45,20};
            int y[]={20,40,80,45,60};
            g.drawPolyline(x,y,x.length);
    
        }
    }
    

    讲解

        g.drawPolyline(x,y,x.length);
    

    表示画一个直线段,即开头和结尾是不闭合的。

        g.drawPolygon(x,y,x.length);
    

    表示绘制一个多边形,开头和结尾闭合。

    这里的x和y都是数组

    	int x[]={40,70,60,45,20};
        int y[]={20,40,80,45,60};
    

    一共有5个点,所以只需要绘制四条线段,即x.length-1。

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  • 自学qt之QPainter

    2017-07-04 16:00:37
    drawPoint() drawArc() drawLine() drawChord() drawPolyline()drawPie() drawPoints()drawText() drawLines()drawPixmap() drawPolygon()drawPath() drawRect
  • Cesium 若干标注和绘制

    2021-06-01 14:44:05
    function DrawPolyLine(viewer, options) { this.viewer = viewer; this.ismeare = options.ismeare || false; this.positions = []; this.poly = null; this.tooltip = document.getElement...
  • 在Silverlight中利用C#来绘制图形比较简单,经常用的两种方法是直接创建对象然后添加到页面容器中和创建XAML创建对象然后利用XamlReader.Load方法加载到容器...public void DrawPolyLine() { //创建Polyline P...
  • var viewer = new Cesium.Viewer('cesiumContainer',{sceneMode:Cesium.SceneMode.SCENE2D}); var scene=viewer.scene; var primitives=scene.primitives;...function drawPolyline(id, points, color
  • 我创建的工程名字是默认的,叫MFCApplication3 首先在MFCApplication3Dlg.h这个文件中添加构造说明: public: CPen m_pen[5]; CPoint m_point[5];... void DrawPolyline(CDC *pDC); void DrawPolygon(CDC *p
  • 一、QPainter 利用QPainter绘制图形,QPainter类中包含了丰富的绘制图形的函数,常用的有以下几种。 (1)QPainter::drawLine():绘制直线 (2)QPainter::drawRect():绘制...(6)QPainter::drawPolyline():绘制多叉线
  • 很简单,只需要在前面代码里面加入几行代码就好了。 1、mainwindow.h头文件中添加#include &...void drawPolyline ( Mat &amp;im, const vector&lt;Point2f&gt; &amp;landmarks...
  • ****Dlg.h头文件加入: //为project加入画笔、点变量数组 public: CPen m_pen[5]; CPoint m_point[5];... void DrawPolyline(CDC *pDC); void DrawPolygon(CDC *pDC); void DrawRect(CDC *p...
  • google map 上画 多条线段是使用google.maps.Polyline 来实现的. javascript 代码: var polyline; //画多边形 google.maps.Polyline ... function drawPolyline(latLngArray) { var path = ne...
  • Graphics2D提供了FillPolygon ,drawPolyline来填充和绘制多边形和多义线 private void Polys() { AffineTransform mat1; /** Colors */ Color redColor = new Color(0x96ff0000, true); Color greenColor = ...
  • SWT:GC.drawPolygon

    2011-02-24 23:05:00
    GC.drawPolygon(int[] pointArray);与drawPolyline(int[])是类似的,唯一区别在于最后一个点和第一个点是连接的。   绘制闭合的多边形。
  • DrawPolyline draws a Polyline object with the symbol that must be specified before hand with the SetSymbol method. All draw methods must be enclosed between the calls to StartDrawing and ...
  • Graphics类中绘制图形的方法 一、画直线 public void drawLine(int x1,int y1,int x2,int y2) ...//点坐标Point(x1,y1),Point(x2...public void drawPolyline(int[] xPoints,int[] yPoints,int numPoints) //xPo
  • 绘制多边形并计算其面积的一个demo

    千次阅读 2010-04-09 10:01:00
    绘制多边形并计算其面积的一个demo int drawPolyline(){ Acad::ErrorStatus es = Acad::eOk; AcGePoint3dArray vertexArray; int iErrSta = 0, i = 0; while (1) { //由于是多边形,即最终要封闭,所以就不需要提示...
  • 我想实现QQ消息这种气泡框,然后我首先写了一个类 A ,包含JFrame,然后在JFrame中写了JPanel, 然后我又写了一个类 B 继承Jpanel,从类A向类B传递Jpanel和输入框中的信息,在B类中,我重写了paintComponent(Graphics ...
  • GWT本身是不支持绘制的,即没有绘制的java api 于是出现了JsGraphicsPanel...如果参考其java doc,会发现与java2D的api比较接近 经过测试发现,在绘制 polyline (public void drawPolyline (int[] xPoints, int[]...
  • 任意给定一个三角形, 对它进行平移,放大,两种变换. (1)将三角形的坐标存放到数组中  (2)先画出原始的三角形,再进行变换,画出变换后的...void CTranslationView::DrawPolyline(CPoint spt[],int n) { RedrawWin

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