1 files changed, 125 insertions, 0 deletions
diff --git a/java/tests/VrDemo/src/com/example/android/rs/vr/engine/TriData.java b/java/tests/VrDemo/src/com/example/android/rs/vr/engine/TriData.java
new file mode 100644
index 00000000..316475a9
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+++ b/java/tests/VrDemo/src/com/example/android/rs/vr/engine/TriData.java
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2015 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 com.example.android.rs.vr.engine;
+
+import android.util.Log;
+
+import java.io.FileReader;
+import java.io.LineNumberReader;
+import java.text.DecimalFormat;
+import java.util.Arrays;
+
+/**
+ * Simple representation triangulated surface
+ */
+public class TriData {
+    private static final String LOGTAG = "TriData";
+    protected float[] mVert;
+    protected int[] mIndex;
+
+    public TriData() {
+     }
+
+    public void print() {
+        class Fmt extends DecimalFormat {
+            public Fmt() {
+                super("      ##0.000");
+            }
+
+            public String f(double number) {
+                String ret = "           "+super.format(number);
+                return ret.substring(ret.length() - 7);
+            }
+        }
+        Fmt df = new Fmt();
+        for (int i = 0; i < mVert.length; i += 3) {
+
+            String s = (i / 3 + "[ " + df.f(mVert[i]));
+            s += (", " + df.f(mVert[i + 1]));
+            Log.v(LOGTAG, s + ", " + df.f(mVert[i + 2]) + "]");
+        }
+    }
+
+    public TriData(TriData clone) {
+
+        mVert = Arrays.copyOf(clone.mVert, clone.mVert.length);
+        mIndex = Arrays.copyOf(clone.mIndex, clone.mIndex.length);
+    }
+
+    public void scale(float[] s) {
+        for (int i = 0; i < mVert.length; i += 3) {
+            mVert[i] *= s[0];
+            mVert[i + 1] *= s[1];
+            mVert[i + 2] *= s[2];
+        }
+    }
+
+    public void scale(double[] s) {
+        for (int i = 0; i < mVert.length; i += 3) {
+            mVert[i] *= s[0];
+            mVert[i + 1] *= s[1];
+            mVert[i + 2] *= s[2];
+        }
+    }
+
+    public void transform(Matrix m) {
+        for (int i = 0; i < mVert.length; i += 3) {
+            m.mult3(mVert, i, mVert, i);
+        }
+    }
+
+    public void transform(Matrix m, TriData out) {
+
+        for (int i = 0; i < mVert.length; i += 3) {
+            m.mult3(mVert, i, out.mVert, i);
+        }
+    }
+
+    /**
+     * Read some simple triangle format used in testing
+     * @param fileName
+     */
+    public void read(String fileName) {
+        try {
+            FileReader fr = new FileReader(fileName);
+            LineNumberReader lnr = new LineNumberReader(fr);
+            int num_verts = Integer.parseInt(lnr.readLine());
+            Log.v(LOGTAG, "verts =" + num_verts);
+            mVert = new float[num_verts * 3];
+            int k = 0;
+            for (int i = 0; i < num_verts; i++) {
+                String[] s = lnr.readLine().split("\\s");
+
+                for (int j = 0; j < s.length; j++) {
+                    mVert[k++] = Float.parseFloat(s[j]);
+                }
+            }
+            int num_tri = Integer.parseInt(lnr.readLine());
+            Log.v(LOGTAG, "tri =" + num_tri);
+            mIndex = new int[3 * num_tri];
+            k = 0;
+            for (int i = 0; i < num_tri; i++) {
+                String[] s = lnr.readLine().split("\\s");
+                for (int j = 0; j < s.length; j++) {
+                    mIndex[k++] = Integer.parseInt(s[j]);
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}