chipmunk-rs 0.1.1

Rust bindings to the Chipmunk2D physics engine.
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<a href="#pub-methods">Instance Methods</a> &#124;
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<p>Simple class to implement multitouch grabbing of physics objects.  
 <a href="interface_chipmunk_multi_grab.html#details">More...</a></p>

<p><code>#import &lt;<a class="el" href="_chipmunk_multi_grab_8h_source.html">ChipmunkMultiGrab.h</a>&gt;</code></p>

<p>Inherits NSObject.</p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Instance Methods</h2></td></tr>
<tr class="memitem:ab6fe5ecc2e4de8eb9eb6f2051004028c"><td class="memItemLeft" align="right" valign="top">(id)&#160;</td><td class="memItemRight" valign="bottom">- <a class="el" href="interface_chipmunk_multi_grab.html#ab6fe5ecc2e4de8eb9eb6f2051004028c">initForSpace:withSmoothing:withGrabForce:</a></td></tr>
<tr class="memdesc:ab6fe5ecc2e4de8eb9eb6f2051004028c"><td class="mdescLeft">&#160;</td><td class="mdescRight"><code>space</code> is the space to grab shapes in.  <a href="#ab6fe5ecc2e4de8eb9eb6f2051004028c">More...</a><br/></td></tr>
<tr class="separator:ab6fe5ecc2e4de8eb9eb6f2051004028c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa443c25702e7ed8b696e524db5ea5296"><td class="memItemLeft" align="right" valign="top">(<a class="el" href="interface_chipmunk_grab.html">ChipmunkGrab</a> *)&#160;</td><td class="memItemRight" valign="bottom">- <a class="el" href="interface_chipmunk_multi_grab.html#aa443c25702e7ed8b696e524db5ea5296">beginLocation:</a></td></tr>
<tr class="memdesc:aa443c25702e7ed8b696e524db5ea5296"><td class="mdescLeft">&#160;</td><td class="mdescRight">Start tracking a new grab point Returns the <a class="el" href="interface_chipmunk_grab.html">ChipmunkGrab</a> that is tracking the touch, but only if a shape was grabbed.  <a href="#aa443c25702e7ed8b696e524db5ea5296">More...</a><br/></td></tr>
<tr class="separator:aa443c25702e7ed8b696e524db5ea5296"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab3663a7c9a0590c9e5bb80410b0b5d30"><td class="memItemLeft" align="right" valign="top">(<a class="el" href="interface_chipmunk_grab.html">ChipmunkGrab</a> *)&#160;</td><td class="memItemRight" valign="bottom">- <a class="el" href="interface_chipmunk_multi_grab.html#ab3663a7c9a0590c9e5bb80410b0b5d30">updateLocation:</a></td></tr>
<tr class="memdesc:ab3663a7c9a0590c9e5bb80410b0b5d30"><td class="mdescLeft">&#160;</td><td class="mdescRight">Update a grab point.  <a href="#ab3663a7c9a0590c9e5bb80410b0b5d30">More...</a><br/></td></tr>
<tr class="separator:ab3663a7c9a0590c9e5bb80410b0b5d30"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a742f251a8c1ad9227b8607491184b091"><td class="memItemLeft" align="right" valign="top">(<a class="el" href="interface_chipmunk_grab.html">ChipmunkGrab</a> *)&#160;</td><td class="memItemRight" valign="bottom">- <a class="el" href="interface_chipmunk_multi_grab.html#a742f251a8c1ad9227b8607491184b091">endLocation:</a></td></tr>
<tr class="memdesc:a742f251a8c1ad9227b8607491184b091"><td class="mdescLeft">&#160;</td><td class="mdescRight">End a grab point.  <a href="#a742f251a8c1ad9227b8607491184b091">More...</a><br/></td></tr>
<tr class="separator:a742f251a8c1ad9227b8607491184b091"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="properties"></a>
Properties</h2></td></tr>
<tr class="memitem:aa494a368c4c817b4613555ad15a2ac70"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa494a368c4c817b4613555ad15a2ac70"></a>
<a class="el" href="structcp_shape_filter.html">cpShapeFilter</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="interface_chipmunk_multi_grab.html#aa494a368c4c817b4613555ad15a2ac70">filter</a></td></tr>
<tr class="memdesc:aa494a368c4c817b4613555ad15a2ac70"><td class="mdescLeft">&#160;</td><td class="mdescRight">Layers used for the point query when grabbing objects. <br/></td></tr>
<tr class="separator:aa494a368c4c817b4613555ad15a2ac70"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afe154eaecb6f4ba3dd70867721e8844c"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="afe154eaecb6f4ba3dd70867721e8844c"></a>
<a class="el" href="group__basic_types.html#gacd811b1135a8f4a3e5cc019552b18b1a">cpGroup</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="interface_chipmunk_multi_grab.html#afe154eaecb6f4ba3dd70867721e8844c">group</a></td></tr>
<tr class="memdesc:afe154eaecb6f4ba3dd70867721e8844c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Group used for the point query when grabbing objects. <br/></td></tr>
<tr class="separator:afe154eaecb6f4ba3dd70867721e8844c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4d10069d64b9decef86ce662df308436"><td class="memItemLeft" align="right" valign="top">bool(^&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="interface_chipmunk_multi_grab.html#a4d10069d64b9decef86ce662df308436">grabFilter</a> )(<a class="el" href="interface_chipmunk_shape.html">ChipmunkShape</a> *shape)</td></tr>
<tr class="memdesc:a4d10069d64b9decef86ce662df308436"><td class="mdescLeft">&#160;</td><td class="mdescRight">Gives you the opportunity to further filter shapes.  <a href="#a4d10069d64b9decef86ce662df308436">More...</a><br/></td></tr>
<tr class="separator:a4d10069d64b9decef86ce662df308436"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a649f885a5cf2cd6eeff2dbfecee29f2c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3">cpFloat</a>(^&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="interface_chipmunk_multi_grab.html#a649f885a5cf2cd6eeff2dbfecee29f2c">grabSort</a> )(<a class="el" href="interface_chipmunk_shape.html">ChipmunkShape</a> *shape, <a class="el" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3">cpFloat</a> depth)</td></tr>
<tr class="memdesc:a649f885a5cf2cd6eeff2dbfecee29f2c"><td class="mdescLeft">&#160;</td><td class="mdescRight">When clicking on a spot where two shapes overlap, the default behavior is to grab the shape that overlaps the grab point the most.  <a href="#a649f885a5cf2cd6eeff2dbfecee29f2c">More...</a><br/></td></tr>
<tr class="separator:a649f885a5cf2cd6eeff2dbfecee29f2c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:abd196f9acd7854db3a974a460ea5817f"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3">cpFloat</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="interface_chipmunk_multi_grab.html#abd196f9acd7854db3a974a460ea5817f">grabFriction</a></td></tr>
<tr class="memdesc:abd196f9acd7854db3a974a460ea5817f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Amount of friction applied by the touch.  <a href="#abd196f9acd7854db3a974a460ea5817f">More...</a><br/></td></tr>
<tr class="separator:abd196f9acd7854db3a974a460ea5817f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a955a16ac2a02fbae8877dc7a1796f2c1"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3">cpFloat</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="interface_chipmunk_multi_grab.html#a955a16ac2a02fbae8877dc7a1796f2c1">grabRotaryFriction</a></td></tr>
<tr class="memdesc:a955a16ac2a02fbae8877dc7a1796f2c1"><td class="mdescLeft">&#160;</td><td class="mdescRight">The amount torque to apply to the grab to keep it from spinning.  <a href="#a955a16ac2a02fbae8877dc7a1796f2c1">More...</a><br/></td></tr>
<tr class="separator:a955a16ac2a02fbae8877dc7a1796f2c1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad376cd2e6cf18bf35c460752acb0618c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3">cpFloat</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="interface_chipmunk_multi_grab.html#ad376cd2e6cf18bf35c460752acb0618c">grabRadius</a></td></tr>
<tr class="memdesc:ad376cd2e6cf18bf35c460752acb0618c"><td class="mdescLeft">&#160;</td><td class="mdescRight">On a touch screen, a single point query can make it really hard to grab small objects with a fat finger.  <a href="#ad376cd2e6cf18bf35c460752acb0618c">More...</a><br/></td></tr>
<tr class="separator:ad376cd2e6cf18bf35c460752acb0618c"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Simple class to implement multitouch grabbing of physics objects. </p>
</div><h2 class="groupheader">Method Documentation</h2>
<a class="anchor" id="aa443c25702e7ed8b696e524db5ea5296"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">- (<a class="el" href="interface_chipmunk_grab.html">ChipmunkGrab</a> *) beginLocation: </td>
          <td></td>
          <td class="paramtype">(<a class="el" href="structcp_vect.html">cpVect</a>)&#160;</td>
          <td class="paramname"><em>pos</em></td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Start tracking a new grab point Returns the <a class="el" href="interface_chipmunk_grab.html">ChipmunkGrab</a> that is tracking the touch, but only if a shape was grabbed. </p>
<p>Returns nil when creating a push shape (if push mode is enabled), or when no shape is grabbed. </p>

</div>
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<a class="anchor" id="a742f251a8c1ad9227b8607491184b091"></a>
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      <table class="memname">
        <tr>
          <td class="memname">- (<a class="el" href="interface_chipmunk_grab.html">ChipmunkGrab</a> *) endLocation: </td>
          <td></td>
          <td class="paramtype">(<a class="el" href="structcp_vect.html">cpVect</a>)&#160;</td>
          <td class="paramname"><em>pos</em></td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>End a grab point. </p>
<p>Returns the <a class="el" href="interface_chipmunk_grab.html">ChipmunkGrab</a> that was tracking the touch, but only if the grab was tracking a shape. </p>

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<a class="anchor" id="ab6fe5ecc2e4de8eb9eb6f2051004028c"></a>
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      <table class="memname">
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          <td class="memname">- (id) initForSpace: </td>
          <td></td>
          <td class="paramtype">(<a class="el" href="interface_chipmunk_space.html">ChipmunkSpace</a> *)&#160;</td>
          <td class="paramname"><em>space</em></td>
        </tr>
        <tr>
          <td class="paramkey">withSmoothing:</td>
          <td></td>
          <td class="paramtype">(<a class="el" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3">cpFloat</a>)&#160;</td>
          <td class="paramname"><em>smoothing</em></td>
        </tr>
        <tr>
          <td class="paramkey">withGrabForce:</td>
          <td></td>
          <td class="paramtype">(<a class="el" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3">cpFloat</a>)&#160;</td>
          <td class="paramname"><em>grabForce</em>&#160;</td>
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        <tr>
          <td></td>
          <td></td>
          <td></td><td></td>
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<p><code>space</code> is the space to grab shapes in. </p>
<p><code>smoothing</code> is the amount of mouse smoothing to apply as percentage of remaining error per second. cpfpow(0.8, 60) is a good starting point that provides fast response, but smooth mouse updates. <code>force</code> is the force the grab points can apply. </p>

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<a class="anchor" id="ab3663a7c9a0590c9e5bb80410b0b5d30"></a>
<div class="memitem">
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          <td class="memname">- (<a class="el" href="interface_chipmunk_grab.html">ChipmunkGrab</a> *) updateLocation: </td>
          <td></td>
          <td class="paramtype">(<a class="el" href="structcp_vect.html">cpVect</a>)&#160;</td>
          <td class="paramname"><em>pos</em></td>
          <td></td>
        </tr>
      </table>
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<p>Update a grab point. </p>
<p>Returns the <a class="el" href="interface_chipmunk_grab.html">ChipmunkGrab</a> that is tracking the touch, but only if the grab is tracking a shape. </p>

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</div>
<h2 class="groupheader">Property Documentation</h2>
<a class="anchor" id="a4d10069d64b9decef86ce662df308436"></a>
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  <td class="mlabels-left">
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          <td class="memname">- (bool(^ grabFilter)(<a class="el" href="interface_chipmunk_shape.html">ChipmunkShape</a> *shape))</td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">read</span><span class="mlabel">write</span><span class="mlabel">nonatomic</span><span class="mlabel">copy</span></span>  </td>
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<p>Gives you the opportunity to further filter shapes. </p>
<p>Return FALSE to ignore a shape. The default implementation always returns TRUE. </p>

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<p>Amount of friction applied by the touch. </p>
<p>Should be less than the grabForce. Defaults to 0.0. </p>

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<p>On a touch screen, a single point query can make it really hard to grab small objects with a fat finger. </p>
<p>By providing a radius, it will make it much easier for users to grab objects. Defaults to 0.0. </p>

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<p>The amount torque to apply to the grab to keep it from spinning. </p>
<p>Defaults to 0.0. </p>

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          <td class="memname">- (<a class="el" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3">cpFloat</a>(^ grabSort)(<a class="el" href="interface_chipmunk_shape.html">ChipmunkShape</a> *shape, <a class="el" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3">cpFloat</a> depth))</td>
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<p>When clicking on a spot where two shapes overlap, the default behavior is to grab the shape that overlaps the grab point the most. </p>
<p>It's possible to use a custom sorting order instead however. The block is called with each shape and the grab depth. It should return a positive float. The shape with the highest value is grabbed. The block is only called if the touch location is within a shape. </p>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="_chipmunk_multi_grab_8h_source.html">ChipmunkMultiGrab.h</a></li>
</ul>
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