Question

is it possible to loop through bitmap and set each color value to an array? at the moment only top row of array is getting written to dst bitmap. eg

.

Bitmap dst = Bitmap.createBitmap(width, height,input.getConfig() ); //output pic


          int origPixel = 0;
          int []arr = new int[input.getWidth()*input.getHeight()];
          int color = 0;

          for(int j=0;j<dst.getHeight();j++){
              for(int i=0;i<dst.getWidth();i++){

           origPixel= input.getPixel(i,j);

           color = ........do something special with that pixel transform it whatever



           if(  Math.pow(i - centerX, 2) + ( Math.pow(j - centerY, 2) )  <= 22500 ){

                arr[i]=color;

            }else{

                arr[i]=origPixel;
            }
  }

}

    Bitmap dst2 = Bitmap.createBitmap(arr,width,height,input.getConfig());
    return dst2;

Answer 1

you need to update arr[k] where k initialize before first loop and increment in the second loop see the modified code a hunk of your code:

int k =0;
 for(int j=0;j<dst.getHeight();j++){
              for(int i=0;i<dst.getWidth();i++, k++){

           origPixel= input.getPixel(i,j);

           color = ........do something special with that pixel transform it whatever



           if(  Math.pow(i - centerX, 2) + ( Math.pow(j - centerY, 2) )  <= 22500 ){

                arr[k]=color;

            }else{

                arr[k]=origPixel;
            }

you are overriding values in array.