ucar.ma2.Index1D Maven / Gradle / Ivy
/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
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package ucar.ma2;
/**
* Specialization of Index for rank 1 arrays.
*
* @see Index
* @author caron
*/
public class Index1D extends Index {
/** current element's indices */
private int curr0;
/** array strides */
private int stride0;
/** array shapes */
private int shape0;
Index1D() { super(1);}
public Index1D( int[] shape) {
super(shape);
precalc();
}
public String toString() {
return Integer.toString(curr0);
}
protected void precalc() {
shape0 = shape[0];
stride0 = stride[0];
curr0 = current[0];
}
public int [] getCurrentCounter() {
current[0] = curr0;
return current.clone();
}
public int currentElement() {
return offset + curr0*stride0;
}
public int incr() {
if (++curr0 >= shape0)
curr0 = 0; // rollover !
return offset + curr0*stride0;
}
public void setDim(int dim, int value) {
if (value < 0 || value >= shape[dim]) // check index here
throw new ArrayIndexOutOfBoundsException();
curr0 = value;
}
public Index set0(int v) {
if (v < 0 || v >= shape0) // check index here
throw new ArrayIndexOutOfBoundsException();
curr0 = v;
return this;
}
public Index set(int v0) {
set0(v0);
return this;
}
public Index set(int[] index){
if (index.length != rank)
throw new ArrayIndexOutOfBoundsException();
set0(index[0]);
return this;
}
public Object clone() {
return super.clone();
}
int setDirect(int v0) {
if (v0 < 0 || v0 >= shape0)
throw new ArrayIndexOutOfBoundsException();
return offset + v0*stride0;
}
}
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