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package bezier.geom;
public class Matrix {
public final double[][] mat;
public Matrix(double[][] mat) {
this.mat = mat;
}
public Matrix add(Matrix m) {
return add(m.mat);
}
public double[] scalarMultiply(double[] vec) {
double[] ret = new double[vec.length];
for(int i = 0; i < mat[0].length; i++) {
for(int j = 0; j < mat.length; j++) {
ret[i] += mat[i][j] * vec[j];
}
}
return ret;
}
public Matrix add(double[][] matr) {
double[][] ret = new double[mat.length][mat[0].length];
for(int i = 0; i < mat.length; i++) {
for(int j = 0; j < mat[0].length; j++) {
ret[i][j] = mat[i][j] + matr[i][j];
}
}
return new Matrix(ret);
}
public Matrix multiply(Matrix m) {
return multiply(m.mat);
}
public Matrix multiply(double[][] matr) {
double[][] ret = new double[mat.length][matr[0].length];
for (int i = 0; i < mat.length; i++) {
for (int j = 0; j < matr[0].length; j++) {
for (int k = 0; k < matr.length; k++) {
ret[i][j] += mat[i][k] * matr[k][j];
}
}
}
return new Matrix(ret);
}
}
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