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  1. JDK
  2. JDK-4690476

NegativeArraySizeException from AffineTransformOp with shear

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    Details

    • Type: Bug
    • Status: Open
    • Priority: P4
    • Resolution: Unresolved
    • Affects Version/s: 1.4.0
    • Fix Version/s: None
    • Component/s: client-libs
    • Labels:
    • Subcomponent:
      2d
    • CPU:
      x86
    • OS:
      windows_98

      Description



      Name: rmT116609 Date: 05/23/2002


      FULL PRODUCT VERSION :
      java version "1.4.0"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
      Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)


      FULL OPERATING SYSTEM VERSION :
      Windows 98 [Version 4.10.2222]

      A DESCRIPTION OF THE PROBLEM :
      I get a java.lang.NegativeArraySizeException at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:41)
      when using an java.awt.image.AffineTransformOp with the following:

      affine transformation with shear large image (2552 x 3300) indexed color space

      Changing the affine transformation to the identity matrix or to a scaled-only matrix works fine.

      This is with bilinear interpolation. Nearest neighbor throws an exception in a different place.

      One theory is that 1-bit images aren't supported as well, so the transformation try to create a hug image of more standard format, and it is so big that width times height overflows int thus giving a negative number.


      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1. see sample source code below


      EXPECTED VERSUS ACTUAL BEHAVIOR :
      Expected sheared and scaled image, actually get exception thrown.

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      java.lang.NegativeArraySizeException
      at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:41)
      at java.awt.image.Raster.createPackedRaster(Raster.java:452)
      at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Direct
      ColorModel.java:1015)
      at java.awt.image.BufferedImage.<init>(BufferedImage.java:259)
      at java.awt.image.AffineTransformOp.createCompatibleDestImage(AffineTran
      sformOp.java:440)
      at java.awt.image.AffineTransformOp.filter(AffineTransformOp.java:204)
      at AOPTest.testAOP(AOPTest.java:48)
      at AOPTest.main(AOPTest.java:54)


      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      import java.awt.*;
      import java.awt.image.*;
      import java.awt.geom.*;

      /**
      AffineTransformOp on 1-bit image throws java.lang.NegativeArraySizeException.

      Creates array of size width * height, which in this case is 2552 * 3300,
      which is not a negative number and furthermore width and height are checked
      to be non-negative in a couple places before the point of the exception.
      */
      public class AOPTest {
        static void testAOP() {
      int w = 2552, h=3300;

      DataBufferByte db = new DataBufferByte(w/8 * h);

      WritableRaster r = Raster.createPackedRaster(db, w,h, 1, null);;
      ColorModel cm = new IndexColorModel(1, 2, new int[] { 0x00ffffff, 0xff000000 },
      0, true, 0, DataBuffer.TYPE_BYTE);

      BufferedImage img = new BufferedImage(cm, r, false, new java.util.Hashtable());

      AffineTransform at = new AffineTransform(0.239879937304075, 23.7487, 18.3669,
      0.240187545454545, 0.0, 0.0);
      double determinant = at.getDeterminant(); // from Javadoc: " If the determinant
      is non-zero, then this transform is invertible..."
      if (determinant==0.0) System.out.println("matrix not invertable!"); else
      System.out.println(determinant+"!=0.0, so invertable, so not bug 4348056");
      //at = new AffineTransform(); // identity transform OK
      //at = new AffineTransform(0.239879937304075, 0.0, 0.0, 0.240187545454545, 0.0,
      0.0); // no shears OK

      AffineTransformOp aop = new AffineTransformOp(at, AffineTransformOp.TYPE_BILINEAR);

      //AffineTransformOp aop = new AffineTransformOp(at,
      AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
      // nearest neighbor gives:
      // java.lang.IllegalArgumentException: Dimensions (width=61223 height=61400) are
      too large
      // at java.awt.image.SampleModel.<init>(SampleModel.java:112)

      img = aop.filter(img, null);
        }


        public static void main(String[] args) {
      try {
      testAOP();
      } catch (Exception e) {
      e.printStackTrace();
      System.out.println(e);
      }
        }
      }

      ---------- END SOURCE ----------

      CUSTOMER WORKAROUND :
      Set m01 and m10 to 0.0. You don't get shearing, but you get scaling and you don't get an exception.
      (Review ID: 146939)
      ======================================================================

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              Assignee:
              campbell Christopher Campbell (Inactive)
              Reporter:
              rmandalasunw Ranjith Mandala (Inactive)
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