/**
* Convert a point to a grid index.
*/
private int pointToGridIdx(Grid grid, float[] point)
{
int[] idx = new int[3];
float[] size = grid.getSize();
for (int i = 0; i < 3; ++i)
{
idx [i] = (int)Math.Floor((point [i] - grid.getMin() [i]) / size [i]);
if (idx [i] >= grid.getDivision() [i])
{
idx [i] = grid.getDivision() [i] - 1;
}
}
return(idx [0] + grid.getDivision() [0] * (idx [1] + grid.getDivision() [1] * idx [2]));
}
/**
* Convert a grid index to a point (the min x/y/z for the given grid box).
*/
public static float[] gridIdxToPoint(Grid grid, int idx)
{
int[] gridIdx = new int[3];
int ydiv = grid.getDivision()[0];
int zdiv = ydiv * grid.getDivision()[1];
gridIdx[2] = idx / zdiv;
idx -= gridIdx[2] * zdiv;
gridIdx[1] = idx / ydiv;
idx -= gridIdx[1] * ydiv;
gridIdx[0] = idx;
float[] size = grid.getSize();
float[] point = new float[3];
for (int i = 0; i < 3; ++i)
{
point[i] = gridIdx[i] * size[i] + grid.getMin()[i];
}
return(point);
}
/**
* Convert a point to a grid index.
*/
private int pointToGridIdx(Grid grid, float[] point)
{
int[] idx = new int[3];
float[] size = grid.getSize ();
for (int i = 0; i < 3; ++i) {
idx [i] = (int)Math.Floor ((point [i] - grid.getMin () [i]) / size [i]);
if (idx [i] >= grid.getDivision () [i]) {
idx [i] = grid.getDivision () [i] - 1;
}
}
return idx [0] + grid.getDivision () [0] * (idx [1] + grid.getDivision () [1] * idx [2]);
}