/**
* Create a buffer for one patch of the given double matrix. The returned buffer encompasses
* <TT>theRowRange</TT> of rows, and <TT>theColRange</TT> of columns, in <TT>theMatrix</TT>. Each
* range's stride may be 1 or greater than 1.
*
* @param theMatrix Matrix.
* @param theRowRange Range of rows to include.
* @param theColRange Range of columns to include.
* @return Buffer.
* @exception NullPointerException (unchecked exception) Thrown if <TT>theMatrix</TT> is null,
* <TT>theRowRange</TT> is null, or <TT>theColRange</TT> is null.
* @exception IndexOutOfBoundsException (unchecked exception) Thrown if <TT>theMatrix</TT>'s
* allocation does not include <TT>theRowRange</TT> and <TT>theColRange</TT>.
*/
public static DoubleBuf patchBuffer(double[][] theMatrix, Range theRowRange, Range theColRange) {
if (theMatrix == null) {
throw new NullPointerException("DoubleBuf.patchBuffer(): theMatrix is null");
}
int nr = Arrays.rowLength(theMatrix);
if (0 > theRowRange.lb() || theRowRange.ub() >= nr) {
throw new IndexOutOfBoundsException(
"DoubleBuf.patchBuffer(): theMatrix row index range = 0.."
+ (nr - 1)
+ ", theRowRange = "
+ theRowRange);
}
int nc = Arrays.colLength(theMatrix, theRowRange.lb());
if (0 > theColRange.lb() || theColRange.ub() >= nc) {
throw new IndexOutOfBoundsException(
"DoubleBuf.patchBuffer(): theMatrix column index range = 0.."
+ (nc - 1)
+ ", theColRange = "
+ theColRange);
}
if (theRowRange.stride() == 1 && theColRange.stride() == 1) {
return new DoubleMatrixBuf_1(theMatrix, theRowRange, theColRange);
} else {
return new DoubleMatrixBuf(theMatrix, theRowRange, theColRange);
}
}
/**
* Create a buffer for one slice of the given shared double array. The returned buffer encompasses
* <TT>theRange</TT> of elements in <TT>theArray</TT>. The range's stride may be 1 or greater than
* 1.
*
* @param theArray Array.
* @param theRange Range of elements to include.
* @return Buffer.
* @exception NullPointerException (unchecked exception) Thrown if <TT>theArray</TT> is null or
* <TT>theRange</TT> is null.
* @exception IndexOutOfBoundsException (unchecked exception) Thrown if <TT>theArray</TT> does not
* include all the indexes in <TT>theRange</TT>.
*/
public static DoubleBuf sliceBuffer(SharedDoubleArray theArray, Range theRange) {
if (theArray == null) {
throw new NullPointerException("DoubleBuf.sliceBuffer(): theArray is null");
}
int nr = theArray.length();
if (0 > theRange.lb() || theRange.ub() >= nr) {
throw new IndexOutOfBoundsException(
"DoubleBuf.sliceBuffer(): theArray index range = 0.."
+ (nr - 1)
+ ", theRange = "
+ theRange);
}
if (theRange.stride() == 1) {
return new SharedDoubleArrayBuf_1(theArray, theRange);
} else {
return new SharedDoubleArrayBuf(theArray, theRange);
}
}
