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<hr><h1>viewport.cpp</h1><a href="viewport_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025
00026 <font class="preprocessor">#include "<a class="code" href="std3d_8h.html">std3d.h</a>"</font>
00027
00028 <font class="preprocessor">#include "<a class="code" href="viewport_8h.html">nel/3d/viewport.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="common_8h.html">nel/misc/common.h</a>"</font>
00030
00031 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00032
00033
00034 <font class="keyword">namespace </font>NL3D
00035 {
00036
<a name="l00037"></a><a class="code" href="classNL3D_1_1CViewport.html#a0">00037</a> CViewport::CViewport()
00038 {
00039 <a class="code" href="viewport_8h.html#a0">NL3D_MEM_VIEWPORT</a>
00040 <a class="code" href="classNL3D_1_1CViewport.html#a2">initFullScreen</a> ();
00041 }
00042
00043
<a name="l00044"></a><a class="code" href="classNL3D_1_1CViewport.html#a1">00044</a> <font class="keywordtype">void</font> CViewport::init (<font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a>, <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>)
00045 {
00046 <a class="code" href="viewport_8h.html#a0">NL3D_MEM_VIEWPORT</a>
00047 <font class="comment">// Simply copy</font>
00048 <a class="code" href="classNL3D_1_1CViewport.html#o0">_X</a>=<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>;
00049 <a class="code" href="namespaceNLMISC.html#a215">clamp</a> (<a class="code" href="classNL3D_1_1CViewport.html#o0">_X</a>, 0.f, 1.f);
00050 <a class="code" href="classNL3D_1_1CViewport.html#o1">_Y</a>=<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>;
00051 <a class="code" href="namespaceNLMISC.html#a215">clamp</a> (<a class="code" href="classNL3D_1_1CViewport.html#o1">_Y</a>, 0.f, 1.f);
00052 <a class="code" href="classNL3D_1_1CViewport.html#o2">_Width</a>=<a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a>;
00053 <a class="code" href="namespaceNLMISC.html#a215">clamp</a> (<a class="code" href="classNL3D_1_1CViewport.html#o2">_Width</a>, 0.f, 1.f-<a class="code" href="classNL3D_1_1CViewport.html#o0">_X</a>);
00054 <a class="code" href="classNL3D_1_1CViewport.html#o3">_Height</a>=<a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>;
00055 <a class="code" href="namespaceNLMISC.html#a215">clamp</a> (<a class="code" href="classNL3D_1_1CViewport.html#o3">_Height</a>, 0.f, 1.f-<a class="code" href="classNL3D_1_1CViewport.html#o1">_Y</a>);
00056 }
00057
00058
<a name="l00059"></a><a class="code" href="classNL3D_1_1CViewport.html#a2">00059</a> <font class="keywordtype">void</font> CViewport::initFullScreen ()
00060 {
00061 <a class="code" href="viewport_8h.html#a0">NL3D_MEM_VIEWPORT</a>
00062 <font class="comment">// Very easy</font>
00063 <a class="code" href="classNL3D_1_1CViewport.html#o0">_X</a>=0.f;
00064 <a class="code" href="classNL3D_1_1CViewport.html#o1">_Y</a>=0.f;
00065 <a class="code" href="classNL3D_1_1CViewport.html#o2">_Width</a>=1.f;
00066 <a class="code" href="classNL3D_1_1CViewport.html#o3">_Height</a>=1.f;
00067 }
00068
00069
<a name="l00070"></a><a class="code" href="classNL3D_1_1CViewport.html#a3">00070</a> <font class="keywordtype">void</font> CViewport::init16_9 ()
00071 {
00072 <a class="code" href="viewport_8h.html#a0">NL3D_MEM_VIEWPORT</a>
00073 <font class="comment">// Very easy</font>
00074 <a class="code" href="classNL3D_1_1CViewport.html#o0">_X</a>=0.f;
00075 <a class="code" href="classNL3D_1_1CViewport.html#o1">_Y</a>=(1.f-0.75f)/2;
00076 <a class="code" href="classNL3D_1_1CViewport.html#o2">_Width</a>=1.f;
00077 <a class="code" href="classNL3D_1_1CViewport.html#o3">_Height</a>=0.75f;
00078 }
00079
00080
<a name="l00081"></a><a class="code" href="classNL3D_1_1CViewport.html#a4">00081</a> <font class="keywordtype">void</font> CViewport::getRayWithPoint (<font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>, <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>, CVector& pos, CVector& dir, <font class="keyword">const</font> CMatrix& camMatrix, <font class="keyword">const</font> CFrustum& camFrust)<font class="keyword"> const</font>
00082 <font class="keyword"></font>{
00083 <a class="code" href="viewport_8h.html#a0">NL3D_MEM_VIEWPORT</a>
00084 <font class="keywordtype">float</font> xVP=(<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>-<a class="code" href="classNL3D_1_1CViewport.html#o0">_X</a>)/<a class="code" href="classNL3D_1_1CViewport.html#o2">_Width</a>;
00085 <font class="keywordtype">float</font> yVP=(<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>-<a class="code" href="classNL3D_1_1CViewport.html#o1">_Y</a>)/<a class="code" href="classNL3D_1_1CViewport.html#o3">_Height</a>;
00086
00087 <font class="comment">// Pos of the ray</font>
00088 pos= camMatrix.getPos();
00089
00090 <font class="comment">// Get camera frustrum</font>
00091 <font class="keywordtype">float</font> left;
00092 <font class="keywordtype">float</font> right;
00093 <font class="keywordtype">float</font> bottom;
00094 <font class="keywordtype">float</font> top;
00095 <font class="keywordtype">float</font> znear;
00096 <font class="keywordtype">float</font> zfar;
00097 camFrust.getValues (left, right, bottom, top, znear, zfar);
00098
00099 <font class="comment">// Get a local direction</font>
00100 dir.x=left+(right-left)*xVP;
00101 dir.y=znear;
00102 dir.z=bottom+(top-bottom)*yVP;
00103
00104 <font class="comment">// Get a world direction</font>
00105 CMatrix mat=camMatrix;
00106 mat.setPos (CVector (0,0,0));
00107 dir=mat*dir;
00108 }
00109
00110
00111 } <font class="comment">// NL3D</font>
00112
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