Java Utililty Methods Distance Calculate

List of utility methods to do Distance Calculate

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Description

The list of methods to do Distance Calculate are organized into topic(s).

Method

doublesquareDist31TileMetric(int x1, int y1, int x2, int y2)
square Dist Tile Metric 
double dy = convert31YToMeters(y1, y2);
double dx = convert31XToMeters(x1, x2);
return dx * dx + dy * dy;
doublesquareDistance(double pointAX, double pointAY, double pointBX, double pointBY)
Returns the square distance between two points. 
return (pointAX - pointBX) * (pointAX - pointBX) + (pointAY - pointBY) * (pointAY - pointBY);
doublesquareDistance(double x1, double y1, double x2, double y2)
Computes the distance between two points squared. 
double xDiff = x1 - x2;
double yDiff = y1 - y2;
return xDiff * xDiff + yDiff * yDiff;
doublesquaredistance(double[] v1, double[] v2)
returns distance between two points 
double dx = v1[0] - v2[0];
double dy = v1[1] - v2[1];
double dz = v1[2] - v2[2];
return (dx * dx + dy * dy + dz * dz);
doublesquareDistance(final double[] a, final double[] b)
get the squared length of (a - b). 
assert rows(a) == rows(b);
final int rows = rows(a);
double squ_len = 0.0;
for (int i = 0; i < rows; ++i)
    squ_len += (a[i] - b[i]) * (a[i] - b[i]);
return squ_len;
floatsquareLength(final float x1, final float y1, final float z1, final float x2, final float y2, final float z2)
square Length 
final float dx = x1 - x2;
final float dy = y1 - y2;
final float dz = z1 - z2;
return dx * dx + dy * dy + dz * dz;
floatsquareSegmentDistance(float[] p, int a, int b, int c)
square distance from a point a to a segment b,c 
float x = p[b];
float y = p[b + 1];
float dx = p[c] - x;
float dy = p[c + 1] - y;
if (dx != 0 || dy != 0) {
    float t = ((p[a] - x) * dx + (p[a + 1] - y) * dy) / (dx * dx + dy * dy);
    if (t > 1) {
        x = p[c];
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