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• 4.0.25
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• AutocropOps.java

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com.sksamuel.scrimage.AutocropOps Maven / Gradle / Ivy

package com.sksamuel.scrimage;

import com.sksamuel.scrimage.pixels.PixelTools;
import com.sksamuel.scrimage.pixels.PixelsExtractor;

import java.awt.*;

public class AutocropOps {

   /**
    * Starting with the given column index, will return the first column index
    * which contains a colour that does not match the given color.
    */
   public static int scanright(Color color, int height, int width, int col, PixelsExtractor f, int tolerance) {
      if (col == width || !PixelTools.colorMatches(color, tolerance, f.apply(new Rectangle(col, 0, 1, height))))
         return col;
      else
         return scanright(color, height, width, col + 1, f, tolerance);
   }

   public static int scanleft(Color color, int height, int col, PixelsExtractor f, int tolerance) {
      if (col == 0 || !PixelTools.colorMatches(color, tolerance, f.apply(new Rectangle(col, 0, 1, height))))
         return col;
      else
         return scanleft(color, height,  col - 1, f, tolerance);
   }

   public static int scandown(Color color, int height, int width, int row, PixelsExtractor f, int tolerance) {
      if (row == height || !PixelTools.colorMatches(color, tolerance, f.apply(new Rectangle(0, row, width, 1))))
         return row;
      else
         return scandown(color, height, width, row + 1, f, tolerance);
   }

   public static int scanup(Color color, int width, int row, PixelsExtractor f, int tolerance) {
      if (row == 0 || !PixelTools.colorMatches(color, tolerance, f.apply(new Rectangle(0, row, width, 1))))
         return row;
      else
         return scanup(color, width, row - 1, f, tolerance);
   }
}