Java tutorial
package org.opencv.core; //javadoc:Scalar_ public class Scalar { public double val[]; public Scalar(double v0, double v1, double v2, double v3) { val = new double[] { v0, v1, v2, v3 }; } public Scalar(double v0, double v1, double v2) { val = new double[] { v0, v1, v2, 0 }; } public Scalar(double v0, double v1) { val = new double[] { v0, v1, 0, 0 }; } public Scalar(double v0) { val = new double[] { v0, 0, 0, 0 }; } public Scalar(double[] vals) { if (vals != null && vals.length == 4) val = vals.clone(); else { val = new double[4]; set(vals); } } public void set(double[] vals) { if (vals != null) { val[0] = vals.length > 0 ? vals[0] : 0; val[1] = vals.length > 1 ? vals[1] : 0; val[2] = vals.length > 2 ? vals[2] : 0; val[3] = vals.length > 3 ? vals[3] : 0; } else val[0] = val[1] = val[2] = val[3] = 0; } public static Scalar all(double v) { return new Scalar(v, v, v, v); } public Scalar clone() { return new Scalar(val); } public Scalar mul(Scalar it, double scale) { return new Scalar(val[0] * it.val[0] * scale, val[1] * it.val[1] * scale, val[2] * it.val[2] * scale, val[3] * it.val[3] * scale); } public Scalar mul(Scalar it) { return mul(it, 1); } public Scalar conj() { return new Scalar(val[0], -val[1], -val[2], -val[3]); } public boolean isReal() { return val[1] == 0 && val[2] == 0 && val[3] == 0; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + java.util.Arrays.hashCode(val); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (!(obj instanceof Scalar)) return false; Scalar it = (Scalar) obj; if (!java.util.Arrays.equals(val, it.val)) return false; return true; } @Override public String toString() { return "[" + val[0] + ", " + val[1] + ", " + val[2] + ", " + val[3] + "]"; } }