1 files changed, 76 insertions, 0 deletions
diff --git a/libs/rs/rsMatrix3x3.cpp b/libs/rs/rsMatrix3x3.cpp
new file mode 100644
index 0000000..3f9a2d1
--- /dev/null
+++ b/libs/rs/rsMatrix3x3.cpp
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+#include "rsMatrix2x2.h"
+#include "rsMatrix3x3.h"
+#include "rsMatrix4x4.h"
+
+#include "stdlib.h"
+#include "string.h"
+#include "math.h"
+
+using namespace android;
+using namespace android::renderscript;
+
+void Matrix3x3::loadIdentity() {
+    m[0] = 1.f;
+    m[1] = 0.f;
+    m[2] = 0.f;
+    m[3] = 0.f;
+    m[4] = 1.f;
+    m[5] = 0.f;
+    m[6] = 0.f;
+    m[7] = 0.f;
+    m[8] = 1.f;
+}
+
+void Matrix3x3::load(const float *v) {
+    memcpy(m, v, sizeof(m));
+}
+
+void Matrix3x3::load(const rs_matrix3x3 *v) {
+    memcpy(m, v->m, sizeof(m));
+}
+
+void Matrix3x3::loadMultiply(const rs_matrix3x3 *lhs, const rs_matrix3x3 *rhs) {
+    for (int i=0 ; i<3 ; i++) {
+        float ri0 = 0;
+        float ri1 = 0;
+        float ri2 = 0;
+        for (int j=0 ; j<3 ; j++) {
+            const float rhs_ij = ((const Matrix3x3 *)rhs)->get(i, j);
+            ri0 += ((const Matrix3x3 *)lhs)->get(j, 0) * rhs_ij;
+            ri1 += ((const Matrix3x3 *)lhs)->get(j, 1) * rhs_ij;
+            ri2 += ((const Matrix3x3 *)lhs)->get(j, 2) * rhs_ij;
+        }
+        set(i, 0, ri0);
+        set(i, 1, ri1);
+        set(i, 2, ri2);
+    }
+}
+
+void Matrix3x3::transpose() {
+    int i, j;
+    float temp;
+    for (i = 0; i < 2; ++i) {
+        for (j = i + 1; j < 3; ++j) {
+            temp = get(i, j);
+            set(i, j, get(j, i));
+            set(j, i, temp);
+        }
+    }
+}
+