1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.rs.vr.engine; 18 19 import android.util.Log; 20 21 import java.io.FileReader; 22 import java.io.LineNumberReader; 23 import java.text.DecimalFormat; 24 import java.util.Arrays; 25 26 /** 27 * Simple representation triangulated surface 28 */ 29 public class TriData { 30 private static final String LOGTAG = "TriData"; 31 protected float[] mVert; 32 protected int[] mIndex; 33 34 public TriData() { 35 } 36 37 public void print() { 38 class Fmt extends DecimalFormat { 39 public Fmt() { 40 super(" ##0.000"); 41 } 42 43 public String f(double number) { 44 String ret = " "+super.format(number); 45 return ret.substring(ret.length() - 7); 46 } 47 } 48 Fmt df = new Fmt(); 49 for (int i = 0; i < mVert.length; i += 3) { 50 51 String s = (i / 3 + "[ " + df.f(mVert[i])); 52 s += (", " + df.f(mVert[i + 1])); 53 Log.v(LOGTAG, s + ", " + df.f(mVert[i + 2]) + "]"); 54 } 55 } 56 57 public TriData(TriData clone) { 58 59 mVert = Arrays.copyOf(clone.mVert, clone.mVert.length); 60 mIndex = Arrays.copyOf(clone.mIndex, clone.mIndex.length); 61 } 62 63 public void scale(float[] s) { 64 for (int i = 0; i < mVert.length; i += 3) { 65 mVert[i] *= s[0]; 66 mVert[i + 1] *= s[1]; 67 mVert[i + 2] *= s[2]; 68 } 69 } 70 71 public void scale(double[] s) { 72 for (int i = 0; i < mVert.length; i += 3) { 73 mVert[i] *= s[0]; 74 mVert[i + 1] *= s[1]; 75 mVert[i + 2] *= s[2]; 76 } 77 } 78 79 public void transform(Matrix m) { 80 for (int i = 0; i < mVert.length; i += 3) { 81 m.mult3(mVert, i, mVert, i); 82 } 83 } 84 85 public void transform(Matrix m, TriData out) { 86 87 for (int i = 0; i < mVert.length; i += 3) { 88 m.mult3(mVert, i, out.mVert, i); 89 } 90 } 91 92 /** 93 * Read some simple triangle format used in testing 94 * @param fileName 95 */ 96 public void read(String fileName) { 97 try { 98 FileReader fr = new FileReader(fileName); 99 LineNumberReader lnr = new LineNumberReader(fr); 100 int num_verts = Integer.parseInt(lnr.readLine()); 101 Log.v(LOGTAG, "verts =" + num_verts); 102 mVert = new float[num_verts * 3]; 103 int k = 0; 104 for (int i = 0; i < num_verts; i++) { 105 String[] s = lnr.readLine().split("\\s"); 106 107 for (int j = 0; j < s.length; j++) { 108 mVert[k++] = Float.parseFloat(s[j]); 109 } 110 } 111 int num_tri = Integer.parseInt(lnr.readLine()); 112 Log.v(LOGTAG, "tri =" + num_tri); 113 mIndex = new int[3 * num_tri]; 114 k = 0; 115 for (int i = 0; i < num_tri; i++) { 116 String[] s = lnr.readLine().split("\\s"); 117 for (int j = 0; j < s.length; j++) { 118 mIndex[k++] = Integer.parseInt(s[j]); 119 } 120 } 121 } catch (Exception e) { 122 e.printStackTrace(); 123 } 124 } 125 } 126
