TorqueEngine
/
Torque2D
镜像来自 https://github.com/TorqueGameEngines/Torque2D.git


			
				
					
						
						
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<div class="header">
  <div class="summary">
<a href="#func-members">Functions</a>  </div>
  <div class="headertitle"><div class="title">Camera functions<div class="ingroups"><a class="el" href="group__dgl.html">Cross-Platform OpenGL Support</a></div></div></div>
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Functions</h2></td></tr>
<tr class="memitem:ga812d03132c74424baa6818716aee045a" id="r_ga812d03132c74424baa6818716aee045a"><td class="memItemLeft" align="right" valign="top">F32&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__dgl__camera__func.html#ga812d03132c74424baa6818716aee045a">dglGetPixelScale</a> ()</td></tr>
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<tr class="memitem:ga2243c5de54e7084b489b3be50c96c9d1" id="r_ga2243c5de54e7084b489b3be50c96c9d1"><td class="memItemLeft" align="right" valign="top">F32&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__dgl__camera__func.html#ga2243c5de54e7084b489b3be50c96c9d1">dglGetWorldToScreenScale</a> ()</td></tr>
<tr class="memdesc:ga2243c5de54e7084b489b3be50c96c9d1"><td class="mdescLeft">&#160;</td><td class="mdescRight">The scale factor of a world unit to a screen unit.  <br /></td></tr>
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<tr class="memitem:gab44fe00837ea38ea9305e467f0497639" id="r_gab44fe00837ea38ea9305e467f0497639"><td class="memItemLeft" align="right" valign="top">F32&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__dgl__camera__func.html#gab44fe00837ea38ea9305e467f0497639">dglProjectRadius</a> (F32 dist, F32 radius)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ga812d03132c74424baa6818716aee045a">&#9670;&#160;</a></span>dglGetPixelScale()</h2>

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          <td class="memname">F32 dglGetPixelScale </td>
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<p>Returns the pixel scale, namely:</p>
<p>viewPort.extent.x / 640.0 </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ga2243c5de54e7084b489b3be50c96c9d1">&#9670;&#160;</a></span>dglGetWorldToScreenScale()</h2>

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          <td class="memname">F32 dglGetWorldToScreenScale </td>
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<p>The scale factor of a world unit to a screen unit. </p>

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<a id="gab44fe00837ea38ea9305e467f0497639" name="gab44fe00837ea38ea9305e467f0497639"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gab44fe00837ea38ea9305e467f0497639">&#9670;&#160;</a></span>dglProjectRadius()</h2>

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          <td class="memname">F32 dglProjectRadius </td>
          <td>(</td>
          <td class="paramtype">F32&#160;</td>
          <td class="paramname"><em>dist</em>, </td>
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          <td class="paramtype">F32&#160;</td>
          <td class="paramname"><em>radius</em>&#160;</td>
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          <td>)</td>
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<p>Returns the screen length of a line of distance "radius" that is "dist" units away from the camera that is perpendicular to the line of sight, namely:</p>
<p>(radius / dist) * worldToScreenScale </p>

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