imageset.java

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/*
 * ImageSet.java
 *
 * Created on 2005年12月13日, 上午10:27
 *
 * To change this template, choose Tools | Options and locate the template under
 * the Source Creation and Management node. Right-click the template and choose
 * Open. You can then make changes to the template in the Source Editor.
 */
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.Graphics;
import java.io.IOException;
/**
 *
 * @author YBGame_xupan
 */
public class ImageSet {
    
    //private int totalStates;
   // private Image[][] stateFrames;
    //private int[] stateAnimTime,stateFrameWidth,stateFrameHeight;
    /*
     *
    // Creates a new instance of ImageSet 
    public ImageSet(int numStates) {
        stateAnimTime=new int[numStates];
        stateFrameWidth=new int[numStates];
        stateFrameHeight=new int[numStates];
        stateFrames=new Image[numStates][];
    }
    //增加精灵
    public final void addState(Image frames[],int animTime){
        int state=totalStates++;
        if (state>=stateFrames.length){
            stateAnimTime=Tools.expandArray(stateAnimTime, 1);
            stateFrameWidth=Tools.expandArray(stateFrameWidth, 1);
            stateFrames=Tools.expandArray(stateFrames, 1);
        }
        stateAnimTime[state]=animTime;
        stateFrameWidth[state]=frames[0].getWidth();
        stateFrameHeight[state]=frames[0].getHeight();
        stateFrames[state]=frames;
    }
    public final int getTotalFrames(int state){
        return stateFrames[state].length;
    }
    public final int getAnimTime(int state){
        return stateAnimTime[state];
    }
    public final int getAnimTimePerFrame(int state){
        return stateAnimTime[state]/stateFrames[state].length;
    }
    public final void draw(Graphics target,int state,int frame,int targetX,int targetY){
        if (stateFrames[state][frame]!=null){
            target.drawImage(stateFrames[state][frame], targetX, targetY, Tools.GRAPHCS_TOP_LEFT);
        }
    }
    public final Image getFrame(int state,int frame){
        return stateFrames[state][frame];
    }
    public final static Image loadClippedImage(String filename,int originX,int originY,int width,int height){
        try{
            Image fileImage=Image.createImage(filename);
            return getImageRegion(fileImage,originX,originY,width,height);
        }catch(IOException ioe){
            System.out.println("can't load file:"+filename);
            return null;
        }
    }
    public final static Image loadClippedImage(String filename,int originX,int originY){
        try{
            Image fileImage = Image.createImage(filename);
            if (originX==0 && originY==0) return fileImage;
            return getImageRegion(fileImage,originX,originY,fileImage.getWidth(),fileImage.getHeight());
        }catch(IOException ioe){
            System.out.println("Can't load file:"+filename);
            return null;
        }
    }
     */
    public final static Image getImageRegion(Image source,int x,int y,int width,int height){
        Image result=Image.createImage(width,height);
        if (x+width>source.getWidth() || y+height>source.getHeight()){
            System.out.println("error 111");
        }
        result.getGraphics().drawImage(source, -x,-y, Tools.GRAPHCS_TOP_LEFT);
        return result;
    }
    public final static Image[] extractFrames(Image sourceImage,int sourceX,int sourceY,int framesWide,int framesHigh,int frameWidth,int frameHeight){
        Image[] frames=new Image[framesWide * framesHigh];
        int frameCount=0;
        for(int fy=0;fy<framesHigh;fy++){
            for(int fx=0;fx<framesWide;fx++){
                frames[frameCount++]=getImageRegion(sourceImage, sourceX+(fx*frameWidth), sourceY+(fy*frameHeight),frameWidth, frameHeight);
            }
        }
        return frames;
    }
}