1 | // ---------------------------------------------------------------------------
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2 | // Includes for all the program files to see
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3 | // ---------------------------------------------------------------------------
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4 | #include <string.h>
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5 | #include <stdlib.h>
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6 | #include <iostream>
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7 | using namespace std;
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8 | #include <xercesc/util/PlatformUtils.hpp>
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9 |
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10 | // ---------------------------------------------------------------------------
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11 | // Includes
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12 | // ---------------------------------------------------------------------------
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13 | #include <xercesc/framework/StdInInputSource.hpp>
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14 | #include <xercesc/parsers/SAXParser.hpp>
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15 | #include <xercesc/util/OutOfMemoryException.hpp>
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16 |
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17 | // ---------------------------------------------------------------------------
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18 | // Includes
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19 | // ---------------------------------------------------------------------------
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20 | #include <xercesc/sax/AttributeList.hpp>
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21 | #include <xercesc/sax/SAXParseException.hpp>
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22 | #include <xercesc/sax/SAXException.hpp>
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23 |
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24 | #include "ViewCellsParser.h"
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25 |
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26 | #include "ViewCellsParserXerces.h"
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27 | #include "Mesh.h"
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28 | #include "VspBspTree.h"
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29 | #include "ViewCellBsp.h"
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30 | #include "ViewCellsManager.h"
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31 |
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32 | // ---------------------------------------------------------------------------
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33 | // Local data
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34 | //
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35 | // doNamespaces
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36 | // Indicates whether namespace processing should be enabled or not.
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37 | // The default is no, but -n overrides that.
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38 | //
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39 | // doSchema
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40 | // Indicates whether schema processing should be enabled or not.
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41 | // The default is no, but -s overrides that.
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42 | //
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43 | // schemaFullChecking
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44 | // Indicates whether full schema constraint checking should be enabled or not.
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45 | // The default is no, but -s overrides that.
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46 | //
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47 | // valScheme
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48 | // Indicates what validation scheme to use. It defaults to 'auto', but
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49 | // can be set via the -v= command.
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50 | // ---------------------------------------------------------------------------
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51 | static bool doNamespaces = false;
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52 | static bool doSchema = false;
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53 | static bool schemaFullChecking = false;
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54 | static SAXParser::ValSchemes valScheme = SAXParser::Val_Auto;
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55 |
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56 |
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57 |
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58 |
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59 |
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60 | // ---------------------------------------------------------------------------
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61 | // StdInParseHandlers: Constructors and Destructor
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62 | // ---------------------------------------------------------------------------
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63 | ViewCellsParseHandlers::ViewCellsParseHandlers(VspBspTree *tree,
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64 | ViewCellsManager *viewCells,
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65 | ObjectContainer *objects):
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66 | mElementCount(0)
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67 | , mAttrCount(0)
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68 | , mCharacterCount(0)
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69 | , mSpaceCount(0)
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70 | {
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71 | mVspBspTree = tree;
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72 | mCurrentNode = tree->GetRoot();
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73 | mViewCellsManager = viewCells;
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74 | mObjects = objects;
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75 | }
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76 |
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77 | ViewCellsParseHandlers::~ViewCellsParseHandlers()
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78 | {
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79 | }
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80 |
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81 |
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82 | // ---------------------------------------------------------------------------
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83 | // StdInParseHandlers: Implementation of the SAX DocumentHandler interface
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84 | // ---------------------------------------------------------------------------
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85 |
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86 |
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87 | void ViewCellsParseHandlers::endElement(const XMLCh* const name)
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88 | {
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89 | StrX lname(name);
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90 | string element(lname.LocalForm());
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91 | if (element == "Interior")
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92 | EndInterior();
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93 | if (element == "ViewCells")
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94 | EndViewCells();
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95 | }
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96 |
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97 |
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98 | void ViewCellsParseHandlers::EndInterior()
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99 | {
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100 | // go one up in the tree
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101 | if (mCurrentNode->GetParent())
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102 | { cout << "]";
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103 | mCurrentNode = mCurrentNode->GetParent();
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104 | }
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105 | }
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106 |
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107 |
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108 | inline bool vlt(ViewCell *v1, ViewCell *v2)
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109 | {
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110 | return v1->mId < v2->mId;
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111 | }
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112 |
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113 |
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114 | void ViewCellsParseHandlers::EndViewCells()
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115 | {
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116 | // sort view cells for easily finding id
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117 | stable_sort(mViewCells.begin(), mViewCells.end(), vlt);
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118 | }
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119 |
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120 |
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121 | void ViewCellsParseHandlers::startElement(const XMLCh* const name,
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122 | AttributeList& attributes)
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123 | {
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124 | StrX lname(name);
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125 | string element(lname.LocalForm());
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126 |
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127 | if (element == "ViewCell")
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128 | {
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129 | cout << "v";
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130 | StartViewCell(attributes);
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131 | }
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132 |
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133 | if (element == "Interior")
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134 | {
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135 | cout << "[";
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136 | StartInterior(attributes);
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137 | }
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138 |
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139 | if (element == "Leaf")
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140 | {
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141 | StartLeaf(attributes);
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142 | }
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143 |
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144 | ++ mElementCount;
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145 | mAttrCount += attributes.getLength();
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146 | }
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147 |
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148 |
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149 | inline bool ilt(Intersectable *obj1, Intersectable *obj2)
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150 | {
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151 | return obj1->mId < obj2->mId;
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152 | }
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153 |
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154 |
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155 | void ViewCellsParseHandlers::StartViewCell(AttributeList& attributes)
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156 | {
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157 | int len = attributes.getLength();
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158 | vector<int> objIndices;
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159 |
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160 | ViewCell *viewCell = mViewCellsManager->GenerateViewCell();
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161 | mViewCells.push_back(viewCell);
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162 |
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163 | for (int i = 0; i < len; ++ i)
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164 | {
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165 | string attrName(StrX(attributes.getName(i)).LocalForm());
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166 |
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167 | if (attrName == "pvs")
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168 | {
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169 | StrX attrValue(attributes.getValue(i));
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170 |
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171 | // handle coordIndex
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172 | objIndices.clear();
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173 | const char *ptr = attrValue.LocalForm();
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174 | char *endptr;
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175 |
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176 | while (1)
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177 | {
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178 | int index = strtol(ptr, &endptr, 10);
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179 |
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180 | if (ptr == endptr)
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181 | break;
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182 |
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183 | objIndices.push_back(index);
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184 |
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185 | ptr = endptr;
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186 | }
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187 |
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188 | //TODO: find objects and add them to pvs
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189 | // TODO: get view cell with specified id
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190 | MeshInstance dummyInst(NULL);
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191 |
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192 | vector<int>::const_iterator it, it_end = objIndices.end();
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193 | for (it = objIndices.begin(); it != it_end; ++ it)
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194 | {
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195 | const int objId = *it;
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196 | dummyInst.SetId(objId);
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197 |
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198 | ObjectContainer::iterator oit =
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199 | lower_bound(mObjects->begin(), mObjects->end(), &dummyInst, ilt);
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200 |
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201 | Intersectable *obj = *oit;
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202 |
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203 | if (obj->GetId() == objId)
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204 | {
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205 | // $$JB we should store a float a per object which corresponds
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206 | // to sumof pdfs, i.e. its relative visibility
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207 | // temporarily set to 1.0f
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208 | viewCell->GetPvs().AddSample(obj, 1.0f);
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209 | }
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210 | else
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211 | {
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212 | Debug << "error: object does not exist" << endl;
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213 | }
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214 | }
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215 | }
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216 | else if (attrName == "id")
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217 | {
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218 | StrX attrValue(attributes.getValue(i));
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219 |
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220 | const char *ptr = attrValue.LocalForm();
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221 | char *endptr = NULL;
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222 | const int id = strtol(ptr, &endptr, 10);
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223 |
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224 | viewCell->SetId(id);
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225 | }
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226 | }
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227 | }
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228 |
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229 |
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230 | void ViewCellsParseHandlers::StartLeaf(AttributeList& attributes)
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231 | {
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232 | BspLeaf * leaf =
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233 | new BspLeaf(dynamic_cast<BspInterior *>(mCurrentNode), NULL);
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234 |
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235 | if (mCurrentNode) // replace front or (if not NULL) back child
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236 | {
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237 | dynamic_cast<BspInterior *>(mCurrentNode)->ReplaceChildLink(NULL, leaf);
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238 | }
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239 | else
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240 | {
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241 | mVspBspTree->mRoot = leaf;
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242 | }
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243 |
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244 | //-- find associated view cell
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245 | int viewCellId;
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246 |
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247 | int len = attributes.getLength();
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248 |
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249 | for (int i = 0; i < len; ++ i)
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250 | {
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251 | string attrName(StrX(attributes.getName(i)).LocalForm());
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252 | StrX attrValue(attributes.getValue(i));
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253 |
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254 | const char *ptr = attrValue.LocalForm();
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255 | char *endptr = NULL;
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256 |
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257 | if (attrName == "viewCellId")
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258 | {
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259 | viewCellId = strtol(ptr, &endptr, 10);
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260 | }
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261 | }
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262 |
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263 | if (viewCellId >= 0) // valid view cell
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264 | {
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265 | // TODO: get view cell with specified id
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266 | ViewCell dummyVc;
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267 | dummyVc.SetId(viewCellId);
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268 |
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269 | ViewCellContainer::iterator vit =
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270 | lower_bound(mViewCells.begin(), mViewCells.end(), &dummyVc, vlt);
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271 |
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272 | BspViewCell *viewCell = dynamic_cast<BspViewCell *>(*vit);
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273 | if (viewCell->GetId() == viewCellId)
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274 | {
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275 | leaf->SetViewCell(viewCell);
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276 | }
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277 | else
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278 | {
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279 | Debug << "error: view cell does not exist" << endl;
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280 | }
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281 | }
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282 | else
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283 | {
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284 | leaf->SetViewCell(mVspBspTree->GetOrCreateOutOfBoundsCell());
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285 | leaf->SetTreeValid(false);
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286 | mVspBspTree->PropagateUpValidity(leaf);
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287 | }
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288 | }
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289 |
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290 |
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291 | void ViewCellsParseHandlers::StartInterior(AttributeList& attributes)
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292 | {
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293 | Plane3 plane;
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294 | int len = attributes.getLength();
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295 |
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296 | for (int i = 0; i < len; ++ i)
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297 | {
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298 | string attrName(StrX(attributes.getName(i)).LocalForm());
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299 | StrX attrValue(attributes.getValue(i));
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300 | const char *ptr = attrValue.LocalForm();
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301 |
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302 | if (attrName == "plane")
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303 | {
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304 | sscanf(ptr, "%f %f %f %f",
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305 | &plane.mNormal.x, &plane.mNormal.y, &plane.mNormal.z, &plane.mD);
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306 | }
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307 | }
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308 |
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309 | BspInterior* interior = new BspInterior(plane);
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310 |
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311 | if (mCurrentNode) // replace NULL child of parent with current node
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312 | {
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313 | BspInterior *current = dynamic_cast<BspInterior *>(mCurrentNode);
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314 |
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315 | current->ReplaceChildLink(NULL, interior);
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316 | interior->SetParent(current);
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317 | }
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318 | else
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319 | {
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320 | mVspBspTree->mRoot = interior;
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321 | }
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322 |
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323 | mCurrentNode = interior;
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324 | }
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325 |
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326 |
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327 | void ViewCellsParseHandlers::characters(const XMLCh* const chars,
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328 | const unsigned int length)
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329 | {
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330 | mCharacterCount += length;
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331 | }
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332 |
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333 |
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334 | void ViewCellsParseHandlers::ignorableWhitespace(const XMLCh* const chars,
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335 | const unsigned int length)
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336 | {
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337 | mSpaceCount += length;
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338 | }
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339 |
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340 |
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341 | void ViewCellsParseHandlers::resetDocument()
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342 | {
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343 | mAttrCount = 0;
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344 | mCharacterCount = 0;
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345 | mElementCount = 0;
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346 | mSpaceCount = 0;
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347 | }
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348 |
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349 |
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350 | // ---------------------------------------------------------------------------
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351 | // StdInParseHandlers: Overrides of the SAX ErrorHandler interface
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352 | // ---------------------------------------------------------------------------
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353 | void
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354 | ViewCellsParseHandlers::error(const SAXParseException& e)
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355 | {
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356 | XERCES_STD_QUALIFIER cerr << "\nError at (file " << StrX(e.getSystemId())
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357 | << ", line " << e.getLineNumber()
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358 | << ", char " << e.getColumnNumber()
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359 | << "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
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360 | }
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361 |
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362 | void
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363 | ViewCellsParseHandlers::fatalError(const SAXParseException& e)
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364 | {
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365 | XERCES_STD_QUALIFIER cerr << "\nFatal Error at (file " << StrX(e.getSystemId())
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366 | << ", line " << e.getLineNumber()
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367 | << ", char " << e.getColumnNumber()
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368 | << "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
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369 | }
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370 |
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371 | void
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372 | ViewCellsParseHandlers::warning(const SAXParseException& e)
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373 | {
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374 | XERCES_STD_QUALIFIER cerr << "\nWarning at (file " << StrX(e.getSystemId())
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375 | << ", line " << e.getLineNumber()
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376 | << ", char " << e.getColumnNumber()
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377 | << "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
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378 | }
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379 |
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380 |
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381 | bool ViewCellsParser::ParseFile(const string filename,
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382 | VspBspTree *tree,
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383 | ViewCellsManager *viewCells,
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384 | ObjectContainer *objects)
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385 | {
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386 | // Initialize the XML4C system
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387 | try {
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388 | XMLPlatformUtils::Initialize();
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389 | }
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390 |
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391 | catch (const XMLException& toCatch)
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392 | {
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393 | XERCES_STD_QUALIFIER cerr << "Error during initialization! Message:\n"
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394 | << StrX(toCatch.getMessage()) << XERCES_STD_QUALIFIER endl;
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395 | return false;
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396 | }
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397 |
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398 |
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399 | //
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400 | // Create a SAX parser object. Then, according to what we were told on
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401 | // the command line, set the options.
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402 | //
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403 | SAXParser* parser = new SAXParser;
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404 | parser->setValidationScheme(valScheme);
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405 | parser->setDoNamespaces(doNamespaces);
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406 | parser->setDoSchema(doSchema);
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407 | parser->setValidationSchemaFullChecking(schemaFullChecking);
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408 |
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409 |
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410 | //
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411 | // Create our SAX handler object and install it on the parser, as the
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412 | // document and error handler. We are responsible for cleaning them
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413 | // up, but since its just stack based here, there's nothing special
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414 | // to do.
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415 | //
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416 | ViewCellsParseHandlers handler(tree, viewCells, objects);
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417 | parser->setDocumentHandler(&handler);
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418 | parser->setErrorHandler(&handler);
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419 |
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420 | unsigned long duration;
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421 | int errorCount = 0;
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422 | // create a faux scope so that 'src' destructor is called before
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423 | // XMLPlatformUtils::Terminate
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424 | {
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425 | //
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426 | // Kick off the parse and catch any exceptions. Create a standard
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427 | // input input source and tell the parser to parse from that.
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428 | //
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429 | // StdInInputSource src;
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430 | try
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431 | {
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432 | const unsigned long startMillis = XMLPlatformUtils::getCurrentMillis();
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433 | parser->parse(filename.c_str());
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434 | const unsigned long endMillis = XMLPlatformUtils::getCurrentMillis();
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435 | duration = endMillis - startMillis;
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436 | errorCount = parser->getErrorCount();
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437 | }
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438 | catch (const OutOfMemoryException&)
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439 | {
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440 | XERCES_STD_QUALIFIER cerr << "OutOfMemoryException" << XERCES_STD_QUALIFIER endl;
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441 | errorCount = 2;
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442 | return false;
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443 | }
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444 | catch (const XMLException& e)
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445 | {
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446 | XERCES_STD_QUALIFIER cerr << "\nError during parsing: \n"
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447 | << StrX(e.getMessage())
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448 | << "\n" << XERCES_STD_QUALIFIER endl;
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449 | errorCount = 1;
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450 | return false;
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451 | }
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452 |
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453 |
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454 | // Print out the stats that we collected and time taken
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455 | if (!errorCount) {
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456 | XERCES_STD_QUALIFIER cout << filename << ": " << duration << " ms ("
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457 | << handler.GetElementCount() << " elems, "
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458 | << handler.GetAttrCount() << " attrs, "
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459 | << handler.GetSpaceCount() << " spaces, "
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460 | << handler.GetCharacterCount() << " chars)" << XERCES_STD_QUALIFIER endl;
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461 | }
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462 | }
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463 |
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464 | //
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465 | // Delete the parser itself. Must be done prior to calling Terminate, below.
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466 | //
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467 | delete parser;
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468 |
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469 | XMLPlatformUtils::Terminate();
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470 |
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471 | if (errorCount > 0)
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472 | return false;
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473 | else
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474 | return true;
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475 | }
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