git.gag.com Git - sw/motorsim/blob - src/com/billkuker/rocketry/motorsim/visual/NozzlePanel.java

   1 package com.billkuker.rocketry.motorsim.visual;\r
   2 \r
   3 import java.awt.BasicStroke;\r
   4 import java.awt.Color;\r
   5 import java.awt.Graphics;\r
   6 import java.awt.Graphics2D;\r
   7 import java.awt.Rectangle;\r
   8 import java.awt.Shape;\r
   9 import java.beans.PropertyChangeEvent;\r
  10 import java.beans.PropertyChangeListener;\r
  11 \r
  12 import javax.measure.unit.SI;\r
  13 import javax.swing.JFrame;\r
  14 import javax.swing.JPanel;\r
  15 import javax.swing.WindowConstants;\r
  16 \r
  17 import org.jscience.physics.amount.Amount;\r
  18 \r
  19 import com.billkuker.rocketry.motorsim.ChangeListening;\r
  20 import com.billkuker.rocketry.motorsim.ConvergentDivergentNozzle;\r
  21 import com.billkuker.rocketry.motorsim.Nozzle;\r
  22 \r
  23 public class NozzlePanel extends JPanel {\r
  24         private static final long serialVersionUID = 1L;\r
  25         private Nozzle nozzle;\r
  26         public NozzlePanel(Nozzle n){\r
  27                 nozzle = n;\r
  28                 \r
  29                 if ( n instanceof ChangeListening.Subject ){\r
  30                         ((ChangeListening.Subject)n).addPropertyChangeListener(new PropertyChangeListener(){\r
  31                                 public void propertyChange(PropertyChangeEvent evt) {\r
  32                                         repaint();\r
  33                                 }\r
  34                         });\r
  35                 }\r
  36         }\r
  37         \r
  38         public void paint(Graphics g){\r
  39                 super.paint(g);\r
  40                 Graphics2D g2d = (Graphics2D)g;\r
  41                 g2d.translate(10, 10);\r
  42 \r
  43                 g2d.setColor(Color.black);\r
  44                 \r
  45                 \r
  46                 Shape a = nozzle.nozzleShape(Amount.valueOf(30, SI.MILLIMETER));\r
  47                 \r
  48                 Rectangle bounds = a.getBounds();\r
  49                 double max = bounds.getWidth();\r
  50                 if ( bounds.getHeight() > max )\r
  51                         max = bounds.getHeight();\r
  52                 \r
  53                 g2d.scale(200 / max, 200 / max);\r
  54                 g2d.translate(-bounds.getX(), -bounds.getY());\r
  55                 \r
  56                 g2d.setStroke(new BasicStroke(4*(float)max/200f));\r
  57                 \r
  58                 g2d.draw( a );\r
  59         }\r
  60         \r
  61         public void showAsWindow(){\r
  62                 JFrame f = new JFrame();\r
  63                 f.setSize(220,250);\r
  64                 f.setContentPane(this);\r
  65                 f.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);\r
  66                 f.setVisible(true);\r
  67         }\r
  68         \r
  69         public static void main(String args[]) throws Exception{\r
  70                 ConvergentDivergentNozzle n = new ConvergentDivergentNozzle();\r
  71                 n.setThroatDiameter(Amount.valueOf(5, SI.MILLIMETER));\r
  72                 n.setExitDiameter(Amount.valueOf(9, SI.MILLIMETER));\r
  73                 new Editor(n).showAsWindow();\r
  74                 new NozzlePanel(n).showAsWindow();\r
  75         }\r
  76 }\r