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<hr><h1>camera.cpp</h1><a href="camera_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="camera_8h.html">3d/camera.h</a>"</font>
00029 
00030 
00031 <font class="keyword">namespace       </font>NL3D
00032 {
00033 
00034 
00035 <font class="comment">// ***************************************************************************</font>
<a name="l00036"></a><a class="code" href="classNL3D_1_1CCamera.html#d0">00036</a> <font class="keywordtype">void</font>    CCamera::registerBasic()
00037 {
00038         CMOT::registerModel(<a class="code" href="namespaceNL3D.html#a18">CameraId</a>, <a class="code" href="namespaceNL3D.html#a276">TransformId</a>, CCamera::creator);
00039 }
00040 
00041 
00042 <font class="comment">// ***************************************************************************</font>
<a name="l00043"></a><a class="code" href="classNL3D_1_1CCamera.html#b0">00043</a> CCamera::CCamera()
00044 {
00045         <a class="code" href="classNL3D_1_1CCamera.html#a0">setFrustum</a>(1.0f, 1.0f, 0.01f, 1.0f);
00046 
00047         <font class="comment">// IAnimatable.</font>
00048         IAnimatable::resize(<a class="code" href="classNL3D_1_1CCamera.html#z391_0s4">AnimValueLast</a>);
00049 
00050         <a class="code" href="classNL3D_1_1CCamera.html#o0">_FovAnimationEnabled</a>= <font class="keyword">false</font>;
00051         <a class="code" href="classNL3D_1_1CCamera.html#o1">_TargetAnimationEnabled</a>= <font class="keyword">false</font>;
00052         <a class="code" href="classNL3D_1_1CCamera.html#o2">_FovAnimationAspectRatio</a>= 4.0f/3.0f;
00053 
00054         <font class="comment">// Default Anims.</font>
00055         <a class="code" href="classNL3D_1_1CCamera.html#o3">_Fov</a>.Value= (float)NLMISC::Pi/2;
00056         <a class="code" href="classNL3D_1_1CCamera.html#o4">_Target</a>.Value= CVector::Null;
00057         <a class="code" href="classNL3D_1_1CCamera.html#o5">_Roll</a>.Value= 0;
00058 }
00059 <font class="comment">// ***************************************************************************</font>
<a name="l00060"></a><a class="code" href="classNL3D_1_1CCamera.html#a2">00060</a> <font class="keywordtype">void</font>            CCamera::setFrustum(<font class="keywordtype">float</font> left, <font class="keywordtype">float</font> right, <font class="keywordtype">float</font> bottom, <font class="keywordtype">float</font> top, <font class="keywordtype">float</font> znear, <font class="keywordtype">float</font> zfar, <font class="keywordtype">bool</font> perspective)
00061 {
00062         <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.init( left, right,bottom, top, znear, zfar, perspective);
00063 }
00064 <font class="comment">// ***************************************************************************</font>
<a name="l00065"></a><a class="code" href="classNL3D_1_1CCamera.html#a3">00065</a> <font class="keywordtype">void</font>            CCamera::setFrustum(<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>, <font class="keywordtype">float</font> znear, <font class="keywordtype">float</font> zfar, <font class="keywordtype">bool</font> perspective)
00066 {
00067         <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.init(<a class="code" href="driver__opengl__extension__def_8h.html#a389">width</a>, <a class="code" href="driver__opengl__extension__def_8h.html#a390">height</a>, znear, zfar, perspective);
00068 }
00069 <font class="comment">// ***************************************************************************</font>
<a name="l00070"></a><a class="code" href="classNL3D_1_1CCamera.html#a7">00070</a> <font class="keywordtype">void</font>            CCamera::setPerspective(<font class="keywordtype">float</font> fov, <font class="keywordtype">float</font> aspectRatio, <font class="keywordtype">float</font> znear, <font class="keywordtype">float</font> zfar)
00071 {
00072         <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.initPerspective(fov, aspectRatio, znear, zfar);
00073 }
00074 <font class="comment">// ***************************************************************************</font>
<a name="l00075"></a><a class="code" href="classNL3D_1_1CCamera.html#a4">00075</a> <font class="keywordtype">void</font>            CCamera::getFrustum(<font class="keywordtype">float</font> &amp;left, <font class="keywordtype">float</font> &amp;right, <font class="keywordtype">float</font> &amp;bottom, <font class="keywordtype">float</font> &amp;top, <font class="keywordtype">float</font> &amp;znear, <font class="keywordtype">float</font> &amp;zfar)<font class="keyword"> const</font>
00076 <font class="keyword"></font>{
00077         left= <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.Left;
00078         right= <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.Right;
00079         bottom= <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.Bottom;
00080         top= <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.Top;
00081         znear= <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.Near;
00082         zfar= <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.Far;
00083 }
00084 <font class="comment">// ***************************************************************************</font>
<a name="l00085"></a><a class="code" href="classNL3D_1_1CCamera.html#a5">00085</a> <font class="keywordtype">bool</font>            CCamera::isOrtho()<font class="keyword"> const</font>
00086 <font class="keyword"></font>{
00087         <font class="keywordflow">return</font> !<a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.Perspective;
00088 }
00089 <font class="comment">// ***************************************************************************</font>
<a name="l00090"></a><a class="code" href="classNL3D_1_1CCamera.html#a6">00090</a> <font class="keywordtype">bool</font>            CCamera::isPerspective()<font class="keyword"> const</font>
00091 <font class="keyword"></font>{
00092         <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.Perspective;
00093 }
00094 
00095 
00096 <font class="comment">// ***************************************************************************</font>
00097 <font class="comment">// ***************************************************************************</font>
00098 <font class="comment">// Anims.</font>
00099 <font class="comment">// ***************************************************************************</font>
00100 <font class="comment">// ***************************************************************************</font>
00101 
00102 
00103 
00104 <font class="comment">// ***************************************************************************</font>
<a name="l00105"></a><a class="code" href="classNL3D_1_1CCamera.html#z391_1">00105</a> IAnimatedValue* CCamera::getValue (uint valueId)
00106 {
00107         <font class="comment">// what value ?</font>
00108         <font class="keywordflow">switch</font> (valueId)
00109         {
00110         <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CCamera.html#z391_0s1">FovValue</a>:                  <font class="keywordflow">return</font> &amp;<a class="code" href="classNL3D_1_1CCamera.html#o3">_Fov</a>;
00111         <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CCamera.html#z391_0s2">TargetValue</a>:               <font class="keywordflow">return</font> &amp;<a class="code" href="classNL3D_1_1CCamera.html#o4">_Target</a>;
00112         <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CCamera.html#z391_0s3">RollValue</a>:                 <font class="keywordflow">return</font> &amp;<a class="code" href="classNL3D_1_1CCamera.html#o5">_Roll</a>;
00113         }
00114 
00115         <font class="keywordflow">return</font> CTransform::getValue(valueId);
00116 }
00117 <font class="comment">// ***************************************************************************</font>
<a name="l00118"></a><a class="code" href="classNL3D_1_1CCamera.html#z391_2">00118</a> <font class="keyword">const</font> <font class="keywordtype">char</font> *CCamera::getValueName (uint valueId)<font class="keyword"> const</font>
00119 <font class="keyword"></font>{
00120         <font class="comment">// what value ?</font>
00121         <font class="keywordflow">switch</font> (valueId)
00122         {
00123         <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CCamera.html#z391_0s1">FovValue</a>:                  <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CCamera.html#z390_0">getFovValueName</a>();
00124         <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CCamera.html#z391_0s2">TargetValue</a>:               <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CCamera.html#z390_1">getTargetValueName</a>();
00125         <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CCamera.html#z391_0s3">RollValue</a>:                 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CCamera.html#z390_2">getRollValueName</a>();
00126         }
00127 
00128         <font class="keywordflow">return</font> CTransform::getValueName(valueId);
00129 }
00130 
00131 <font class="comment">// ***************************************************************************</font>
00132 CTrackDefaultFloat              CCamera::DefaultFov( (<font class="keywordtype">float</font>)NLMISC::Pi/2 );
00133 CTrackDefaultVector             CCamera::DefaultTarget( CVector::Null );
00134 CTrackDefaultFloat              CCamera::DefaultRoll( 0 );
00135 
00136 
<a name="l00137"></a><a class="code" href="classNL3D_1_1CCamera.html#z391_3">00137</a> ITrack* CCamera::getDefaultTrack (uint valueId)
00138 {
00139         <font class="comment">// what value ?</font>
00140         <font class="keywordflow">switch</font> (valueId)
00141         {
00142         <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CCamera.html#z391_0s1">FovValue</a>:                  <font class="keywordflow">return</font> &amp;<a class="code" href="classNL3D_1_1CCamera.html#r0">DefaultFov</a>;
00143         <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CCamera.html#z391_0s2">TargetValue</a>:               <font class="keywordflow">return</font> &amp;<a class="code" href="classNL3D_1_1CCamera.html#r1">DefaultTarget</a>;
00144         <font class="keywordflow">case</font> <a class="code" href="classNL3D_1_1CCamera.html#z391_0s3">RollValue</a>:                 <font class="keywordflow">return</font> &amp;<a class="code" href="classNL3D_1_1CCamera.html#r2">DefaultRoll</a>;
00145         }
00146 
00147         <font class="keywordflow">return</font> CTransform::getDefaultTrack(valueId);
00148 }
00149 <font class="comment">// ***************************************************************************</font>
<a name="l00150"></a><a class="code" href="classNL3D_1_1CCamera.html#z391_4">00150</a> <font class="keywordtype">void</font>    CCamera::registerToChannelMixer(CChannelMixer *chanMixer, <font class="keyword">const</font> std::string &amp;prefix)
00151 {
00152         <font class="comment">// For CCamera, channels are not detailled.</font>
00153         <a class="code" href="classNL3D_1_1IAnimatable.html#b0">addValue</a>(chanMixer, <a class="code" href="classNL3D_1_1CCamera.html#z391_0s1">FovValue</a>, <a class="code" href="classNL3D_1_1CCamera.html#z391_0s0">OwnerBit</a>, prefix, <font class="keyword">false</font>);
00154         <a class="code" href="classNL3D_1_1IAnimatable.html#b0">addValue</a>(chanMixer, <a class="code" href="classNL3D_1_1CCamera.html#z391_0s2">TargetValue</a>, <a class="code" href="classNL3D_1_1CCamera.html#z391_0s0">OwnerBit</a>, prefix, <font class="keyword">false</font>);
00155         <a class="code" href="classNL3D_1_1IAnimatable.html#b0">addValue</a>(chanMixer, <a class="code" href="classNL3D_1_1CCamera.html#z391_0s3">RollValue</a>, <a class="code" href="classNL3D_1_1CCamera.html#z391_0s0">OwnerBit</a>, prefix, <font class="keyword">false</font>);
00156 
00157         CTransform::registerToChannelMixer(chanMixer, prefix);
00158 }
00159 
00160 
00161 
00162 <font class="comment">// ***************************************************************************</font>
<a name="l00163"></a><a class="code" href="classNL3D_1_1CCamera.html#b2">00163</a> <font class="keywordtype">void</font>    CCamera::update()
00164 {
00165         CTransform::update();
00166         
00167         <font class="comment">// test animations</font>
00168         <font class="keywordflow">if</font>(IAnimatable::isTouched(<a class="code" href="classNL3D_1_1CCamera.html#z391_0s0">OwnerBit</a>))
00169         {
00170                 <font class="comment">// FOV.</font>
00171                 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CCamera.html#o0">_FovAnimationEnabled</a> &amp;&amp; IAnimatable::isTouched(<a class="code" href="classNL3D_1_1CCamera.html#z391_0s1">FovValue</a>))
00172                 {
00173                         <font class="comment">// keep the same near/far.</font>
00174                         <a class="code" href="classNL3D_1_1CCamera.html#a7">setPerspective</a>(<a class="code" href="classNL3D_1_1CCamera.html#o3">_Fov</a>.Value, <a class="code" href="classNL3D_1_1CCamera.html#o2">_FovAnimationAspectRatio</a>, <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.Near, <a class="code" href="classNL3D_1_1CCamera.html#n0">_Frustum</a>.Far);
00175                 }
00176 
00177                 <font class="comment">// Target / Roll.</font>
00178                 <font class="comment">// If target/Roll is animated, compute our own quaternion.</font>
00179                 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CCamera.html#o1">_TargetAnimationEnabled</a> &amp;&amp; (IAnimatable::isTouched(<a class="code" href="classNL3D_1_1CCamera.html#z391_0s2">TargetValue</a>) || IAnimatable::isTouched(<a class="code" href="classNL3D_1_1CCamera.html#z391_0s3">RollValue</a>)) )
00180                 {
00181                         CQuat   q0, q1;
00182 
00183                         <font class="comment">// compute rotation of target.</font>
00184                         CMatrix mat;
00185                         mat.setRot(CVector::I, <a class="code" href="classNL3D_1_1CCamera.html#o4">_Target</a>.Value, CVector::K);
00186                         mat.normalize(CMatrix::YZX);
00187                         q0= mat.getRot();
00188 
00189                         <font class="comment">// compute roll rotation.</font>
00190                         q1.setAngleAxis(CVector::J, <a class="code" href="classNL3D_1_1CCamera.html#o5">_Roll</a>.Value);
00191 
00192 
00193                         <font class="comment">// combine and set rotquat!!</font>
00194                         <a class="code" href="classNL3D_1_1ITransformable.html#z869_4">setRotQuat</a>(q0*q1);
00195                 }
00196 
00197 
00198                 IAnimatable::clearFlag(<a class="code" href="classNL3D_1_1CCamera.html#z391_0s1">FovValue</a>);
00199                 IAnimatable::clearFlag(<a class="code" href="classNL3D_1_1CCamera.html#z391_0s2">TargetValue</a>);
00200                 IAnimatable::clearFlag(<a class="code" href="classNL3D_1_1CCamera.html#z391_0s3">RollValue</a>);
00201 
00202                 <font class="comment">// We are OK!</font>
00203                 IAnimatable::clearFlag(<a class="code" href="classNL3D_1_1CCamera.html#z391_0s0">OwnerBit</a>);
00204         }
00205 }
00206 
00207 
00208 }
00209 
</pre></div>

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