1 files changed, 0 insertions, 119 deletions
diff --git a/core/java/android/util/MatrixUtils.java b/core/java/android/util/MatrixUtils.java
deleted file mode 100644
index c443d6c..0000000
--- a/core/java/android/util/MatrixUtils.java
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.util;
-
-import java.util.Arrays;
-
-/**
- * A class that contains utility methods related to matrices.
- *
- * @hide
- */
-public class MatrixUtils {
-    private MatrixUtils() {
-        // This class is non-instantiable.
-    }
-
-    /**
-     * Sets a matrix to the identity matrix.
-     *
-     * @param out output matrix of size n*m
-     * @param n number of rows in the output matrix
-     * @param m number of columns in the output matrix
-     */
-    public static void setIdentityM(float[] out, int n, int m) {
-        final int size = n * m;
-        if (out.length != size) {
-            throw new IllegalArgumentException("Invalid dimensions for output matrix");
-        }
-
-        Arrays.fill(out, 0, size, 0);
-        for (int i = Math.min(m,n) - 1; i >= 0; i--) {
-            out[i * (m + 1)] = 1;
-        }
-    }
-
-    /**
-     * Add two matrices. May be used in-place by specifying the same value for
-     * the out matrix and one of the input matrices.
-     *
-     * @param ab output matrix of size n*m
-     * @param a left-hand matrix of size n*m
-     * @param n number of rows in the left-hand matrix
-     * @param m number of columns in the left-hand matrix
-     * @param b right-hand matrix of size n*m
-     */
-    public static void addMM(float[] ab, float[] a, int n, int m, float[] b) {
-        final int size = n * m;
-        if (a.length != size) {
-            throw new IllegalArgumentException("Invalid dimensions for matrix a");
-        } else if (b.length != size) {
-            throw new IllegalArgumentException("Invalid dimensions for matrix b");
-        } else if (ab.length != size) {
-            throw new IllegalArgumentException("Invalid dimensions for matrix ab");
-        }
-
-        for (int i = 0; i < size; i++) {
-            ab[i] = a[i] + b[i];
-        }
-    }
-
-    /**
-     * Multiply two matrices.
-     *
-     * @param ab output matrix of size n*p
-     * @param a left-hand matrix of size n*m
-     * @param n number of rows in the left-hand matrix
-     * @param m number of columns in the left-hand matrix
-     * @param b right-hand matrix of size m*p
-     * @param p number of columns in the right-hand matrix
-     */
-    public static void multiplyMM(float[] ab, float[] a, int n, int m, float[] b, int p) {
-        if (a.length != n * m) {
-            throw new IllegalArgumentException("Invalid dimensions for matrix a");
-        } else if (b.length != m * p) {
-            throw new IllegalArgumentException("Invalid dimensions for matrix b");
-        } else if (ab.length != n * p) {
-            throw new IllegalArgumentException("Invalid dimensions for matrix ab");
-        }
-
-        for (int i = 0; i < n; i++) {
-            for (int j = 0; j < p; j++) {
-                float sum = 0;
-                for (int k = 0; k < m; k++) {
-                    sum += a[i * m + k] * b[k * p + j];
-                }
-                ab[i * p + j] = sum;
-            }
-        }
-    }
-
-    /**
-     * Multiply a matrix by a scalar value. May be used in-place by specifying
-     * the same value for the input and output matrices.
-     *
-     * @param out output matrix
-     * @param in input matrix
-     * @param scalar scalar value
-     */
-    public static void multiplyMS(float[] out, float[] in, float scalar) {
-        final int n = out.length;
-        for (int i = 0; i < n; i++) {
-            out[i] = in[i] * scalar;
-        }
-    }
-}