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<h1>dmxmotion.h File Reference</h1>
<p>
<a href="dmxmotion_8h-source.html">Go to the source code of this file.</a><table border=0 cellpadding=0 cellspacing=0>
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<tr><td class="memItemLeft" nowrap align=right valign=top>int </td><td class="memItemRight" valign=bottom><a class="el" href="dmxmotion_8h.html#a0">dmxPointerGetMotionBufferSize</a> (void)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>int </td><td class="memItemRight" valign=bottom><a class="el" href="dmxmotion_8h.html#a1">dmxPointerGetMotionEvents</a> (DeviceIntPtr pDevice, xTimecoord *coords, unsigned long start, unsigned long stop, ScreenPtr pScreen)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="dmxmotion_8h.html#a2">dmxPointerPutMotionEvent</a> (DeviceIntPtr pDevice, int firstAxis, int axesCount, int *v, unsigned long time)</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
Interface to functions supporting motion events. <dl compact><dt><b>See also:</b></dt><dd><a class="el" href="dmxmotion_8c.html">dmxmotion.c</a></dd></dl>
<hr><h2>Function Documentation</h2>
<a class="anchor" name="a0" doxytag="dmxmotion.h::dmxPointerGetMotionBufferSize" ></a><p>
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<td class="md" nowrap valign="top"> int dmxPointerGetMotionBufferSize </td>
<td class="md" valign="top">( </td>
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Return size of motion buffer. <dl compact><dt><b>See also:</b></dt><dd>DMX_MOTION_SIZE </dd></dl>
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<td class="md" nowrap valign="top"> int dmxPointerGetMotionEvents </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">DeviceIntPtr </td>
<td class="mdname" nowrap> <em>pDevice</em>, </td>
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<td class="md" nowrap>xTimecoord * </td>
<td class="mdname" nowrap> <em>coords</em>, </td>
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<td class="md" nowrap>unsigned long </td>
<td class="mdname" nowrap> <em>start</em>, </td>
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<td class="md" nowrap>unsigned long </td>
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This routine performs the same function as <em>miPointerGetMotionEvents</em>: the events in the motion history that are between the start and stop times (in mS) are placed in the coords vector, and the count of the number of items so placed is returned. This routine is called from dix/devices.c so that coords can hold valuator->numMotionEvents events. This routine is called from <em>Xi/gtmotion</em>.c with coords large enough to hold the same number of events in a variable-length extended <em>xTimecoord</em> structure. This provides sufficient data for the <em>XGetDeviceMotionEvents</em> library call, and would be identical to <em>miPointerGetMotionEvents</em> for devices with only 2 axes (i.e., core pointers) if <em>xTimecoord</em> used 32bit integers.<p>
Because DMX uses the mi* routines for all core devices, this routine only has to support extension devices using the polymorphic coords. Because compatibility with miPointerGetMotionEvents is not possible, it is not provided. </td>
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<td class="md" nowrap valign="top"> void dmxPointerPutMotionEvent </td>
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<td class="md" nowrap>unsigned long </td>
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This routine adds an event to the motion history. A similar function is performed by miPointerMove for the mi versions of these routines. </td>
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