axis.java

著名IT公司ILog的APS高级排产优化引擎

package com.power.util.graph2D;

import java.awt.*;
import java.util.*;
import java.awt.geom.*;
/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: Paraster ,INC</p>
 * @author Huang Yu
 * @version 1.0
 */

public class axis {
   /**
 *    Constant flagging Horizontal Axis
 */
      static final int  HORIZONTAL = 0;
/**
 *    Constant flagging Vertical Axis
 */
      static final int  VERTICAL   = 1;
/**
 *    define the color of the axis
*/
      private Color axisColor = null ;
/**
 *    The number of label
 */
      private int label_count = 0;
/**
 *    The direction of the axis
 */
      private int orientation = 0;
/**
 *    The title of the axis
 */
      private String axisTitle ;
/**
 *    The length of the axis
 */
      private double axisLength = 400 ;
/**
 *    The original point the axis
 */
      private Point2D original = null;
  /*
*********************
** Constructors
********************/
 /**
   *  Instantiate the class. The default type is a Horizontal axis
   *  The default label_count is 10.
   *  The default axistitle is 'X axis'
   *  positioned at the bottom of the graph.
   */
      public  axis(){
        this.axisColor = Color.black ;
        this.label_count = 10 ;
        this.orientation = HORIZONTAL ;
        this.axisTitle = "X axis";
      }
  /**
   * a constructor with param
   * @param i integer  which indicates the type of axis is VERTICAL
   */
      public  axis(int i) {
        this.orientation = VERTICAL ;
        this.label_count =10 ;
        this.axisColor = Color.black ;
        this.axisTitle = "Y axis";
      }
  /**
   * set the color of the axis
   * @param color
   */
      public  void setAxisColor(Color color){

        this.axisColor = color;
      }
      public Color getAxisColor(){
        return this.axisColor ;
      }
/**
 * set the number of the label
 * @param i
 */
      public void setLabelCount(int i){
        this.label_count = i ;
      }
      public int getLabelCount(){
        return this.label_count ;
      }
  /**
   * set the title of the axis
   * @param s
   */
      public void setAxisTitle(String s){
        this.axisTitle = s;
      }
      public String getAxisTitle(){
        return this.axisTitle ;
      }
 /**
  * set the length of the axis
  * @param length
  */
      public void setAxisLength(double length){
        this.axisLength = length ;
      }
      public double getAxisLength(){
        return this.axisLength ;
      }
/**
 * set the original point of the axis
 * @param point  Point2D  type
 */
      public void setOriginal(Point2D point){
        this.original = point ;
      }
      public Point2D getOriginal(){
        return this.original  ;
      }
/**
 *    draw the axis
 * @param g
 */
      public void drawAxis(Graphics g){
        Graphics2D g2=(Graphics2D)g ;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        Point2D endPoint;
        g2.setColor(this.axisColor);
        if(this.orientation==HORIZONTAL){
          endPoint = new Point2D.Double(this.original.getX()+ this.axisLength , this.original .getY() );
        }else{
          endPoint = new Point2D.Double(this.original.getX() ,this.original.getY()- this.axisLength );
       }
        g2.draw(new Line2D.Double(this.original ,endPoint));

        int i=1;
        double sizeUnit = this.axisLength / this.label_count ;
        while(i<=this.label_count ) {
            if(this.orientation == HORIZONTAL){
                 Line2D xLine = new Line2D.Double(original.getX()+sizeUnit*i ,original.getY(),original.getX()+sizeUnit*i ,original.getY()-5);
                 g2.draw(xLine);
            }
            else{
                   Line2D yLine = new Line2D.Double(original.getX(),original.getY()-sizeUnit*i,original.getX()+5,original.getY()-sizeUnit*i);
                   g2.draw(yLine);
            }
              i++;
          }

        if(this.orientation == HORIZONTAL){
            g2.drawString(this.axisTitle ,(float)(original.getX()+ this.axisLength/2), (float)(original.getY() + 20));
        }
        else{

            g2.drawString(this.axisTitle ,(float)(original.getX()-30), (float)(original.getY() - this.axisLength-2));
        }
      }

}