package PEU.P.image;
//作者,著作权人： 罗瑶光，浏阳
public class Dilation{
   int[][]kernel;
   int[][]GetRegion;
   int [][]tempG;
   private void IV_Temp(int[][]thisG) {
      tempG=new int[thisG.length][thisG[0].length];
      for(int i = 0;i<thisG.length;i++){
         for(int j = 0;j<thisG[0].length;j++){
            tempG[i][j]=0;
         }
      }   
   }
   public int[][] P(int[][] g, int[][] kenel) {      
      int thisw = g.length;
      int thish = g[0].length;
      int [][]thisG = null;
      if((kenel.length%2 == 0)&&(kenel[0].length%2 == 0))
      //padding 4行 refer ReinHart 教授，他上课给我的
         thisG = new Reflection().PadImage(g
         , kenel.length+1, kenel[0].length+1); 
      if((kenel.length%2 == 0)&&(kenel[0].length%2 == 1))
         thisG = new Reflection().PadImage(g
         , kenel.length+1, kenel[0].length); 
      if((kenel.length%2 == 1)&&(kenel[0].length%2 == 0))
         thisG = new Reflection().PadImage(g
         , kenel.length, kenel[0].length+1); 
      if((kenel.length%2 == 1)&&(kenel[0].length%2 == 1))
         thisG= new Reflection().PadImage(g
         , kenel.length, kenel[0].length); 
      IV_Temp(thisG);   
      int w=kenel.length;
      int h=kenel[0].length;
      for(int i=w/2;i<thisw+w/2;i++){
         for(int j=h/2;j<thish+h/2;j++){
            for(int p=0;p<w;p++){
               for(int q=0;q<h;q++){
                  if(kenel[p][q]==1){
                     if(thisG[i][j]>0){
                        tempG[i-w/2+p][j-h/2+q]=thisG[i][j];
                     }              
                  }
               }
            }   
         }
      }
      int[][] out=new int[g.length][g[0].length];
      for(int i=0;i<out[0].length;++i) {
         for(int j=0;j<out.length;++j) {
            out[j][i]=tempG[j][i];
         }
      }
      return out;
   }
}