Return the distance between the given two points described vector v1 and v2. - Java java.lang

Java examples for java.lang:Math Vector

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Description

Return the distance between the given two points described vector v1 and v2.

Demo Code

/**// www .ja v  a  2 s.c om
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import java.util.ArrayList;

public class Main{
    /**
     * Return the distance between the given two points described vector v1 and v2.
     */
    public static float distVec3(final float[] v1, final float[] v2) {
        return FloatUtil.sqrt(distSquareVec3(v1, v2));
    }
    /**
     * Return the squared distance between the given two points described vector v1 and v2.
     * <p>
     * When comparing the relative distance between two points it is usually sufficient to compare the squared
     * distances, thus avoiding an expensive square root operation.
     * </p>
     */
    public static float distSquareVec3(final float[] v1, final float[] v2) {
        final float dx = v1[0] - v2[0];
        final float dy = v1[1] - v2[1];
        final float dz = v1[2] - v2[2];
        return dx * dx + dy * dy + dz * dz;
    }
}

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