638 lines
43 KiB
HTML
638 lines
43 KiB
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<div class="headertitle"><div class="title">FrustumClass Class Reference</div></div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="pub-methods" name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a3e4fb03cda7e5382639522186908d673" id="r_a3e4fb03cda7e5382639522186908d673"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#a3e4fb03cda7e5382639522186908d673">FrustumClass</a> (const <a class="el" href="class_frustum_class.html">FrustumClass</a> &)</td></tr>
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<tr class="memitem:adeaf533105109b2a56940f8692aab123" id="r_adeaf533105109b2a56940f8692aab123"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="#adeaf533105109b2a56940f8692aab123">ConstructFrustum</a> (XMMATRIX, XMMATRIX, float)</td></tr>
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<tr class="memitem:a61f780ff4f06d82d0d466f12f8cbbe76" id="r_a61f780ff4f06d82d0d466f12f8cbbe76"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#a61f780ff4f06d82d0d466f12f8cbbe76">CheckPoint</a> (float, float, float)</td></tr>
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<tr class="memitem:a066f37260b949abb5d0fefd06c0c6817" id="r_a066f37260b949abb5d0fefd06c0c6817"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#a066f37260b949abb5d0fefd06c0c6817">CheckCube</a> (float, float, float, float)</td></tr>
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<tr class="separator:a066f37260b949abb5d0fefd06c0c6817"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a7806a6d95944f6794d90cd941d7860b2" id="r_a7806a6d95944f6794d90cd941d7860b2"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#a7806a6d95944f6794d90cd941d7860b2">CheckSphere</a> (float, float, float, float)</td></tr>
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<tr class="separator:a7806a6d95944f6794d90cd941d7860b2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a36ef6fb28871b148f1b17be30de2a084" id="r_a36ef6fb28871b148f1b17be30de2a084"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#a36ef6fb28871b148f1b17be30de2a084">CheckRectangle</a> (float, float, float, float, float, float)</td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock">
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<p class="definition">Definition at line <a class="el" href="frustumclass_8h_source.html#l00015">15</a> of file <a class="el" href="frustumclass_8h_source.html">frustumclass.h</a>.</p>
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</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<a id="a62130bf46eceff05f1fd7362d826a518" name="a62130bf46eceff05f1fd7362d826a518"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a62130bf46eceff05f1fd7362d826a518">◆ </a></span>FrustumClass() <span class="overload">[1/2]</span></h2>
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<td class="memname">FrustumClass::FrustumClass </td>
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<td>(</td>
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<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
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<td></td>
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<p class="definition">Definition at line <a class="el" href="frustumclass_8cpp_source.html#l00004">4</a> of file <a class="el" href="frustumclass_8cpp_source.html">frustumclass.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 5</span>{</div>
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<div class="line"><span class="lineno"> 6</span>}</div>
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</div><!-- fragment -->
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<a id="a3e4fb03cda7e5382639522186908d673" name="a3e4fb03cda7e5382639522186908d673"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a3e4fb03cda7e5382639522186908d673">◆ </a></span>FrustumClass() <span class="overload">[2/2]</span></h2>
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<td class="memname">FrustumClass::FrustumClass </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="class_frustum_class.html">FrustumClass</a> &</td> <td class="paramname"><span class="paramname"><em>other</em></span></td><td>)</td>
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<td></td>
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<p class="definition">Definition at line <a class="el" href="frustumclass_8cpp_source.html#l00009">9</a> of file <a class="el" href="frustumclass_8cpp_source.html">frustumclass.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 10</span>{</div>
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<div class="line"><span class="lineno"> 11</span>}</div>
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</div><!-- fragment -->
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<a id="ad109f05c5a62469d444de601de6caa72" name="ad109f05c5a62469d444de601de6caa72"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ad109f05c5a62469d444de601de6caa72">◆ </a></span>~FrustumClass()</h2>
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<td class="memname">FrustumClass::~FrustumClass </td>
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<td>(</td>
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<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
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<td></td>
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<p class="definition">Definition at line <a class="el" href="frustumclass_8cpp_source.html#l00014">14</a> of file <a class="el" href="frustumclass_8cpp_source.html">frustumclass.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 15</span>{</div>
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<div class="line"><span class="lineno"> 16</span>}</div>
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</div><!-- fragment -->
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</div>
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</div>
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<h2 class="groupheader">Member Function Documentation</h2>
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<a id="a066f37260b949abb5d0fefd06c0c6817" name="a066f37260b949abb5d0fefd06c0c6817"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a066f37260b949abb5d0fefd06c0c6817">◆ </a></span>CheckCube()</h2>
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<td class="memname">bool FrustumClass::CheckCube </td>
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<td>(</td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>xCenter</em></span>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>yCenter</em></span>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>zCenter</em></span>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>radius</em></span> )</td>
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<p class="definition">Definition at line <a class="el" href="frustumclass_8cpp_source.html#l00140">140</a> of file <a class="el" href="frustumclass_8cpp_source.html">frustumclass.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 141</span>{</div>
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<div class="line"><span class="lineno"> 142</span> <span class="keywordtype">int</span> i;</div>
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<div class="line"><span class="lineno"> 143</span> </div>
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<div class="line"><span class="lineno"> 144</span> </div>
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<div class="line"><span class="lineno"> 145</span> <span class="comment">// Check if any one point of the cube is in the view frustum.</span></div>
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<div class="line"><span class="lineno"> 146</span> <span class="keywordflow">for</span> (i = 0; i < 6; i++)</div>
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<div class="line"><span class="lineno"> 147</span> {</div>
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<div class="line"><span class="lineno"> 148</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter - radius) +</div>
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<div class="line"><span class="lineno"> 149</span> m_planes[i].y * (yCenter - radius) +</div>
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<div class="line"><span class="lineno"> 150</span> m_planes[i].z * (zCenter - radius) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 151</span> {</div>
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<div class="line"><span class="lineno"> 152</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 153</span> }</div>
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<div class="line"><span class="lineno"> 154</span> </div>
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<div class="line"><span class="lineno"> 155</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter + radius) +</div>
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<div class="line"><span class="lineno"> 156</span> m_planes[i].y * (yCenter - radius) +</div>
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<div class="line"><span class="lineno"> 157</span> m_planes[i].z * (zCenter - radius) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 158</span> {</div>
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<div class="line"><span class="lineno"> 159</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 160</span> }</div>
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<div class="line"><span class="lineno"> 161</span> </div>
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<div class="line"><span class="lineno"> 162</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter - radius) +</div>
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<div class="line"><span class="lineno"> 163</span> m_planes[i].y * (yCenter + radius) +</div>
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<div class="line"><span class="lineno"> 164</span> m_planes[i].z * (zCenter - radius) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 165</span> {</div>
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<div class="line"><span class="lineno"> 166</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 167</span> }</div>
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<div class="line"><span class="lineno"> 168</span> </div>
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<div class="line"><span class="lineno"> 169</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter + radius) +</div>
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<div class="line"><span class="lineno"> 170</span> m_planes[i].y * (yCenter + radius) +</div>
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<div class="line"><span class="lineno"> 171</span> m_planes[i].z * (zCenter - radius) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 172</span> {</div>
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<div class="line"><span class="lineno"> 173</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 174</span> }</div>
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<div class="line"><span class="lineno"> 175</span> </div>
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<div class="line"><span class="lineno"> 176</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter - radius) +</div>
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<div class="line"><span class="lineno"> 177</span> m_planes[i].y * (yCenter - radius) +</div>
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<div class="line"><span class="lineno"> 178</span> m_planes[i].z * (zCenter + radius) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 179</span> {</div>
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<div class="line"><span class="lineno"> 180</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 181</span> }</div>
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<div class="line"><span class="lineno"> 182</span> </div>
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<div class="line"><span class="lineno"> 183</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter + radius) +</div>
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<div class="line"><span class="lineno"> 184</span> m_planes[i].y * (yCenter - radius) +</div>
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<div class="line"><span class="lineno"> 185</span> m_planes[i].z * (zCenter + radius) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 186</span> {</div>
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<div class="line"><span class="lineno"> 187</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 188</span> }</div>
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<div class="line"><span class="lineno"> 189</span> </div>
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<div class="line"><span class="lineno"> 190</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter - radius) +</div>
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<div class="line"><span class="lineno"> 191</span> m_planes[i].y * (yCenter + radius) +</div>
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<div class="line"><span class="lineno"> 192</span> m_planes[i].z * (zCenter + radius) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 193</span> {</div>
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<div class="line"><span class="lineno"> 194</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 195</span> }</div>
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<div class="line"><span class="lineno"> 196</span> </div>
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<div class="line"><span class="lineno"> 197</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter + radius) +</div>
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<div class="line"><span class="lineno"> 198</span> m_planes[i].y * (yCenter + radius) +</div>
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<div class="line"><span class="lineno"> 199</span> m_planes[i].z * (zCenter + radius) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 200</span> {</div>
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<div class="line"><span class="lineno"> 201</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 202</span> }</div>
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<div class="line"><span class="lineno"> 203</span> </div>
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<div class="line"><span class="lineno"> 204</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><span class="lineno"> 205</span> }</div>
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<div class="line"><span class="lineno"> 206</span> </div>
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<div class="line"><span class="lineno"> 207</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><span class="lineno"> 208</span>}</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a61f780ff4f06d82d0d466f12f8cbbe76">◆ </a></span>CheckPoint()</h2>
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<td class="memname">bool FrustumClass::CheckPoint </td>
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<td>(</td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>x</em></span>, </td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>y</em></span>, </td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>z</em></span> )</td>
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<p class="definition">Definition at line <a class="el" href="frustumclass_8cpp_source.html#l00123">123</a> of file <a class="el" href="frustumclass_8cpp_source.html">frustumclass.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 124</span>{</div>
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<div class="line"><span class="lineno"> 125</span> <span class="keywordtype">int</span> i;</div>
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<div class="line"><span class="lineno"> 126</span> </div>
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<div class="line"><span class="lineno"> 127</span> </div>
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<div class="line"><span class="lineno"> 128</span> <span class="comment">// Check if the point is inside all six planes of the view frustum.</span></div>
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<div class="line"><span class="lineno"> 129</span> <span class="keywordflow">for</span> (i = 0; i < 6; i++)</div>
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<div class="line"><span class="lineno"> 130</span> {</div>
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<div class="line"><span class="lineno"> 131</span> <span class="keywordflow">if</span> (((m_planes[i].x * x) + (m_planes[i].y * y) + (m_planes[i].z * z) + m_planes[i].w) < 0.0f)</div>
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<div class="line"><span class="lineno"> 132</span> {</div>
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<div class="line"><span class="lineno"> 133</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><span class="lineno"> 134</span> }</div>
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<div class="line"><span class="lineno"> 135</span> }</div>
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<div class="line"><span class="lineno"> 136</span> </div>
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<div class="line"><span class="lineno"> 137</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><span class="lineno"> 138</span>}</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a36ef6fb28871b148f1b17be30de2a084">◆ </a></span>CheckRectangle()</h2>
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<td class="memname">bool FrustumClass::CheckRectangle </td>
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<td>(</td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>xCenter</em></span>, </td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>yCenter</em></span>, </td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>zCenter</em></span>, </td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>xSize</em></span>, </td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>ySize</em></span>, </td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>zSize</em></span> )</td>
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<p class="definition">Definition at line <a class="el" href="frustumclass_8cpp_source.html#l00227">227</a> of file <a class="el" href="frustumclass_8cpp_source.html">frustumclass.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 228</span>{</div>
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<div class="line"><span class="lineno"> 229</span> <span class="keywordtype">int</span> i;</div>
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<div class="line"><span class="lineno"> 230</span> </div>
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<div class="line"><span class="lineno"> 231</span> </div>
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<div class="line"><span class="lineno"> 232</span> <span class="comment">// Check if any of the 6 planes of the rectangle are inside the view frustum.</span></div>
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<div class="line"><span class="lineno"> 233</span> <span class="keywordflow">for</span> (i = 0; i < 6; i++)</div>
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<div class="line"><span class="lineno"> 234</span> {</div>
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<div class="line"><span class="lineno"> 235</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter - xSize) +</div>
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<div class="line"><span class="lineno"> 236</span> m_planes[i].y * (yCenter - ySize) +</div>
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<div class="line"><span class="lineno"> 237</span> m_planes[i].z * (zCenter - zSize) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 238</span> {</div>
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<div class="line"><span class="lineno"> 239</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 240</span> }</div>
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<div class="line"><span class="lineno"> 241</span> </div>
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<div class="line"><span class="lineno"> 242</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter + xSize) +</div>
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<div class="line"><span class="lineno"> 243</span> m_planes[i].y * (yCenter - ySize) +</div>
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<div class="line"><span class="lineno"> 244</span> m_planes[i].z * (zCenter - zSize) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 245</span> {</div>
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<div class="line"><span class="lineno"> 246</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 247</span> }</div>
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<div class="line"><span class="lineno"> 248</span> </div>
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<div class="line"><span class="lineno"> 249</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter - xSize) +</div>
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<div class="line"><span class="lineno"> 250</span> m_planes[i].y * (yCenter + ySize) +</div>
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<div class="line"><span class="lineno"> 251</span> m_planes[i].z * (zCenter - zSize) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 252</span> {</div>
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<div class="line"><span class="lineno"> 253</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 254</span> }</div>
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<div class="line"><span class="lineno"> 255</span> </div>
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<div class="line"><span class="lineno"> 256</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter - xSize) +</div>
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<div class="line"><span class="lineno"> 257</span> m_planes[i].y * (yCenter - ySize) +</div>
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<div class="line"><span class="lineno"> 258</span> m_planes[i].z * (zCenter + zSize) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 259</span> {</div>
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<div class="line"><span class="lineno"> 260</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 261</span> }</div>
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<div class="line"><span class="lineno"> 262</span> </div>
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<div class="line"><span class="lineno"> 263</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter + xSize) +</div>
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<div class="line"><span class="lineno"> 264</span> m_planes[i].y * (yCenter + ySize) +</div>
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<div class="line"><span class="lineno"> 265</span> m_planes[i].z * (zCenter - zSize) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 266</span> {</div>
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<div class="line"><span class="lineno"> 267</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 268</span> }</div>
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<div class="line"><span class="lineno"> 269</span> </div>
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<div class="line"><span class="lineno"> 270</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter + xSize) +</div>
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<div class="line"><span class="lineno"> 271</span> m_planes[i].y * (yCenter - ySize) +</div>
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<div class="line"><span class="lineno"> 272</span> m_planes[i].z * (zCenter + zSize) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 273</span> {</div>
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<div class="line"><span class="lineno"> 274</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 275</span> }</div>
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<div class="line"><span class="lineno"> 276</span> </div>
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<div class="line"><span class="lineno"> 277</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter - xSize) +</div>
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<div class="line"><span class="lineno"> 278</span> m_planes[i].y * (yCenter + ySize) +</div>
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<div class="line"><span class="lineno"> 279</span> m_planes[i].z * (zCenter + zSize) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 280</span> {</div>
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<div class="line"><span class="lineno"> 281</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 282</span> }</div>
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<div class="line"><span class="lineno"> 283</span> </div>
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<div class="line"><span class="lineno"> 284</span> <span class="keywordflow">if</span> (m_planes[i].x * (xCenter + xSize) +</div>
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<div class="line"><span class="lineno"> 285</span> m_planes[i].y * (yCenter + ySize) +</div>
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<div class="line"><span class="lineno"> 286</span> m_planes[i].z * (zCenter + zSize) + m_planes[i].w >= 0.0f)</div>
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<div class="line"><span class="lineno"> 287</span> {</div>
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<div class="line"><span class="lineno"> 288</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><span class="lineno"> 289</span> }</div>
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<div class="line"><span class="lineno"> 290</span> </div>
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<div class="line"><span class="lineno"> 291</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><span class="lineno"> 292</span> }</div>
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<div class="line"><span class="lineno"> 293</span> </div>
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<div class="line"><span class="lineno"> 294</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><span class="lineno"> 295</span>}</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a7806a6d95944f6794d90cd941d7860b2">◆ </a></span>CheckSphere()</h2>
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<td class="memname">bool FrustumClass::CheckSphere </td>
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<td>(</td>
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<td class="paramtype">float</td> <td class="paramname"><span class="paramname"><em>radius</em></span> )</td>
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<p class="definition">Definition at line <a class="el" href="frustumclass_8cpp_source.html#l00210">210</a> of file <a class="el" href="frustumclass_8cpp_source.html">frustumclass.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 211</span>{</div>
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<div class="line"><span class="lineno"> 212</span> <span class="keywordtype">int</span> i;</div>
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<div class="line"><span class="lineno"> 213</span> </div>
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<div class="line"><span class="lineno"> 214</span> </div>
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<div class="line"><span class="lineno"> 215</span> <span class="comment">// Check if the radius of the sphere is inside the view frustum.</span></div>
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<div class="line"><span class="lineno"> 216</span> <span class="keywordflow">for</span> (i = 0; i < 6; i++)</div>
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<div class="line"><span class="lineno"> 217</span> {</div>
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<div class="line"><span class="lineno"> 218</span> <span class="keywordflow">if</span> (((m_planes[i].x * xCenter) + (m_planes[i].y * yCenter) + (m_planes[i].z * zCenter) + m_planes[i].w) < -radius)</div>
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<div class="line"><span class="lineno"> 219</span> {</div>
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<div class="line"><span class="lineno"> 220</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><span class="lineno"> 221</span> }</div>
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<div class="line"><span class="lineno"> 222</span> }</div>
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<div class="line"><span class="lineno"> 223</span> </div>
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<div class="line"><span class="lineno"> 224</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><span class="lineno"> 225</span>}</div>
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<h2 class="memtitle"><span class="permalink"><a href="#adeaf533105109b2a56940f8692aab123">◆ </a></span>ConstructFrustum()</h2>
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<p class="definition">Definition at line <a class="el" href="frustumclass_8cpp_source.html#l00018">18</a> of file <a class="el" href="frustumclass_8cpp_source.html">frustumclass.cpp</a>.</p>
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<div class="line"><span class="lineno"> 20</span> XMMATRIX finalMatrix;</div>
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<div class="line"><span class="lineno"> 21</span> XMFLOAT4X4 projMatrix, matrix;</div>
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<div class="line"><span class="lineno"> 22</span> <span class="keywordtype">float</span> zMinimum, r, t;</div>
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<div class="line"><span class="lineno"> 23</span> </div>
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<div class="line"><span class="lineno"> 24</span> <span class="comment">// Load the projection matrix into a XMFLOAT4X4 structure.</span></div>
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<div class="line"><span class="lineno"> 25</span> XMStoreFloat4x4(&projMatrix, projectionMatrix);</div>
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<div class="line"><span class="lineno"> 26</span> </div>
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<div class="line"><span class="lineno"> 27</span> <span class="comment">// Calculate the minimum Z distance in the frustum.</span></div>
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<div class="line"><span class="lineno"> 28</span> zMinimum = -projMatrix._43 / projMatrix._33;</div>
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<div class="line"><span class="lineno"> 29</span> r = screenDepth / (screenDepth - zMinimum);</div>
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<div class="line"><span class="lineno"> 30</span> projMatrix._33 = r;</div>
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<div class="line"><span class="lineno"> 31</span> projMatrix._43 = -r * zMinimum;</div>
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<div class="line"><span class="lineno"> 32</span> </div>
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<div class="line"><span class="lineno"> 33</span> <span class="comment">// Load the updated XMFLOAT4X4 back into the original projection matrix.</span></div>
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<div class="line"><span class="lineno"> 34</span> projectionMatrix = XMLoadFloat4x4(&projMatrix);</div>
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<div class="line"><span class="lineno"> 35</span> </div>
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<div class="line"><span class="lineno"> 36</span> <span class="comment">// Create the frustum matrix from the view matrix and updated projection matrix.</span></div>
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<div class="line"><span class="lineno"> 37</span> finalMatrix = XMMatrixMultiply(viewMatrix, projectionMatrix);</div>
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<div class="line"><span class="lineno"> 38</span> </div>
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<div class="line"><span class="lineno"> 39</span> <span class="comment">// Load the final matrix into a XMFLOAT4X4 structure.</span></div>
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<div class="line"><span class="lineno"> 40</span> XMStoreFloat4x4(&matrix, finalMatrix);</div>
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<div class="line"><span class="lineno"> 41</span> </div>
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<div class="line"><span class="lineno"> 42</span> <span class="comment">// Get the near plane of the frustum.</span></div>
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<div class="line"><span class="lineno"> 43</span> m_planes[0].x = matrix._13;</div>
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<div class="line"><span class="lineno"> 44</span> m_planes[0].y = matrix._23;</div>
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<div class="line"><span class="lineno"> 45</span> m_planes[0].z = matrix._33;</div>
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<div class="line"><span class="lineno"> 46</span> m_planes[0].w = matrix._43;</div>
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<div class="line"><span class="lineno"> 47</span> </div>
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<div class="line"><span class="lineno"> 48</span> <span class="comment">// Normalize it.</span></div>
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<div class="line"><span class="lineno"> 49</span> t = (float)sqrt((m_planes[0].x * m_planes[0].x) + (m_planes[0].y * m_planes[0].y) + (m_planes[0].z * m_planes[0].z));</div>
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<div class="line"><span class="lineno"> 50</span> m_planes[0].x /= t;</div>
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<div class="line"><span class="lineno"> 51</span> m_planes[0].y /= t;</div>
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<div class="line"><span class="lineno"> 52</span> m_planes[0].z /= t;</div>
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<div class="line"><span class="lineno"> 53</span> m_planes[0].w /= t;</div>
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<div class="line"><span class="lineno"> 54</span> </div>
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<div class="line"><span class="lineno"> 55</span> <span class="comment">// Calculate the far plane of frustum.</span></div>
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<div class="line"><span class="lineno"> 56</span> m_planes[1].x = matrix._14 - matrix._13;</div>
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<div class="line"><span class="lineno"> 57</span> m_planes[1].y = matrix._24 - matrix._23;</div>
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<div class="line"><span class="lineno"> 58</span> m_planes[1].z = matrix._34 - matrix._33;</div>
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<div class="line"><span class="lineno"> 59</span> m_planes[1].w = matrix._44 - matrix._43;</div>
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<div class="line"><span class="lineno"> 60</span> </div>
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<div class="line"><span class="lineno"> 61</span> <span class="comment">// Normalize it.</span></div>
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<div class="line"><span class="lineno"> 62</span> t = (float)sqrt((m_planes[1].x * m_planes[1].x) + (m_planes[1].y * m_planes[1].y) + (m_planes[1].z * m_planes[1].z));</div>
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<div class="line"><span class="lineno"> 63</span> m_planes[1].x /= t;</div>
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<div class="line"><span class="lineno"> 64</span> m_planes[1].y /= t;</div>
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<div class="line"><span class="lineno"> 65</span> m_planes[1].z /= t;</div>
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<div class="line"><span class="lineno"> 66</span> m_planes[1].w /= t;</div>
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<div class="line"><span class="lineno"> 67</span> </div>
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<div class="line"><span class="lineno"> 68</span> <span class="comment">// Calculate the left plane of frustum.</span></div>
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<div class="line"><span class="lineno"> 69</span> m_planes[2].x = matrix._14 + matrix._11;</div>
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<div class="line"><span class="lineno"> 70</span> m_planes[2].y = matrix._24 + matrix._21;</div>
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<div class="line"><span class="lineno"> 71</span> m_planes[2].z = matrix._34 + matrix._31;</div>
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<div class="line"><span class="lineno"> 72</span> m_planes[2].w = matrix._44 + matrix._41;</div>
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<div class="line"><span class="lineno"> 73</span> </div>
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<div class="line"><span class="lineno"> 74</span> <span class="comment">// Normalize it.</span></div>
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<div class="line"><span class="lineno"> 75</span> t = (float)sqrt((m_planes[2].x * m_planes[2].x) + (m_planes[2].y * m_planes[2].y) + (m_planes[2].z * m_planes[2].z));</div>
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<div class="line"><span class="lineno"> 76</span> m_planes[2].x /= t;</div>
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<div class="line"><span class="lineno"> 77</span> m_planes[2].y /= t;</div>
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<div class="line"><span class="lineno"> 78</span> m_planes[2].z /= t;</div>
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<div class="line"><span class="lineno"> 79</span> m_planes[2].w /= t;</div>
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<div class="line"><span class="lineno"> 80</span> </div>
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<div class="line"><span class="lineno"> 81</span> <span class="comment">// Calculate the right plane of frustum.</span></div>
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<div class="line"><span class="lineno"> 82</span> m_planes[3].x = matrix._14 - matrix._11;</div>
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<div class="line"><span class="lineno"> 83</span> m_planes[3].y = matrix._24 - matrix._21;</div>
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<div class="line"><span class="lineno"> 84</span> m_planes[3].z = matrix._34 - matrix._31;</div>
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<div class="line"><span class="lineno"> 85</span> m_planes[3].w = matrix._44 - matrix._41;</div>
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<div class="line"><span class="lineno"> 86</span> </div>
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<div class="line"><span class="lineno"> 87</span> <span class="comment">// Normalize it.</span></div>
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<div class="line"><span class="lineno"> 88</span> t = (float)sqrt((m_planes[3].x * m_planes[3].x) + (m_planes[3].y * m_planes[3].y) + (m_planes[3].z * m_planes[3].z));</div>
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<div class="line"><span class="lineno"> 89</span> m_planes[3].x /= t;</div>
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<div class="line"><span class="lineno"> 90</span> m_planes[3].y /= t;</div>
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<div class="line"><span class="lineno"> 91</span> m_planes[3].z /= t;</div>
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<div class="line"><span class="lineno"> 92</span> m_planes[3].w /= t;</div>
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<div class="line"><span class="lineno"> 93</span> </div>
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<div class="line"><span class="lineno"> 94</span> <span class="comment">// Calculate the top plane of frustum.</span></div>
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<div class="line"><span class="lineno"> 95</span> m_planes[4].x = matrix._14 - matrix._12;</div>
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<div class="line"><span class="lineno"> 96</span> m_planes[4].y = matrix._24 - matrix._22;</div>
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<div class="line"><span class="lineno"> 97</span> m_planes[4].z = matrix._34 - matrix._32;</div>
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<div class="line"><span class="lineno"> 98</span> m_planes[4].w = matrix._44 - matrix._42;</div>
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<div class="line"><span class="lineno"> 99</span> </div>
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<div class="line"><span class="lineno"> 100</span> <span class="comment">// Normalize it.</span></div>
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<div class="line"><span class="lineno"> 101</span> t = (float)sqrt((m_planes[4].x * m_planes[4].x) + (m_planes[4].y * m_planes[4].y) + (m_planes[4].z * m_planes[4].z));</div>
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<div class="line"><span class="lineno"> 102</span> m_planes[4].x /= t;</div>
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<div class="line"><span class="lineno"> 103</span> m_planes[4].y /= t;</div>
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<div class="line"><span class="lineno"> 104</span> m_planes[4].z /= t;</div>
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<div class="line"><span class="lineno"> 105</span> m_planes[4].w /= t;</div>
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<div class="line"><span class="lineno"> 106</span> </div>
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<div class="line"><span class="lineno"> 107</span> <span class="comment">// Calculate the bottom plane of frustum.</span></div>
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<div class="line"><span class="lineno"> 108</span> m_planes[5].x = matrix._14 + matrix._12;</div>
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<div class="line"><span class="lineno"> 109</span> m_planes[5].y = matrix._24 + matrix._22;</div>
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<div class="line"><span class="lineno"> 110</span> m_planes[5].z = matrix._34 + matrix._32;</div>
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<div class="line"><span class="lineno"> 111</span> m_planes[5].w = matrix._44 + matrix._42;</div>
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<div class="line"><span class="lineno"> 112</span> </div>
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<div class="line"><span class="lineno"> 113</span> <span class="comment">// Normalize it.</span></div>
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<div class="line"><span class="lineno"> 114</span> t = (float)sqrt((m_planes[5].x * m_planes[5].x) + (m_planes[5].y * m_planes[5].y) + (m_planes[5].z * m_planes[5].z));</div>
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<div class="line"><span class="lineno"> 115</span> m_planes[5].x /= t;</div>
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<div class="line"><span class="lineno"> 116</span> m_planes[5].y /= t;</div>
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<div class="line"><span class="lineno"> 117</span> m_planes[5].z /= t;</div>
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<div class="line"><span class="lineno"> 118</span> m_planes[5].w /= t;</div>
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<div class="line"><span class="lineno"> 119</span> </div>
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<div class="line"><span class="lineno"> 120</span> <span class="keywordflow">return</span>;</div>
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<div class="line"><span class="lineno"> 121</span>}</div>
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</div><!-- fragment -->
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<hr/>The documentation for this class was generated from the following files:<ul>
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<li>enginecustom/src/inc/system/<a class="el" href="frustumclass_8h_source.html">frustumclass.h</a></li>
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<li>enginecustom/src/src/system/<a class="el" href="frustumclass_8cpp_source.html">frustumclass.cpp</a></li>
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