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<div id="projectbrief">C Image Processing Library</div>
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<h1>boxfunc1.c File Reference</h1> </div>
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<p><a class="el" href="struct_box.html">Box</a> intersection, union, containment; <a class="el" href="struct_boxa.html">Boxa</a> union, extent, permutation.
<a href="#_details">More...</a></p>
<div class="textblock"><code>#include "<a class="el" href="allheaders_8h_source.html">allheaders.h</a>"</code><br/>
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Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a77d61926edc3fd6a9c9dc835215446df">boxContains</a> (<a class="el" href="struct_box.html">BOX</a> *box1, <a class="el" href="struct_box.html">BOX</a> *box2, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *presult)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a53d6bcaba9d945e014ded0f6a8797a87">boxIntersects</a> (<a class="el" href="struct_box.html">BOX</a> *box1, <a class="el" href="struct_box.html">BOX</a> *box2, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *presult)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_boxa.html">BOXA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a34c4b4f11b13c40d6461822c7153fa20">boxaContainedInBox</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxas, <a class="el" href="struct_box.html">BOX</a> *box)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_boxa.html">BOXA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a58d630acf422576941d2e4f54cb3b277">boxaIntersectsBox</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxas, <a class="el" href="struct_box.html">BOX</a> *box)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_boxa.html">BOXA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a8fbbe8c99cfc171cc5449bb8f623b0b8">boxaClipToBox</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxas, <a class="el" href="struct_box.html">BOX</a> *box)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_boxa.html">BOXA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a42ee9e3a7bfd5168b4fcb70f3ea8ad3c">boxaCombineOverlaps</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxas)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_box.html">BOX</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a8647c990ccaecd8f886a8e5c1c9300cb">boxOverlapRegion</a> (<a class="el" href="struct_box.html">BOX</a> *box1, <a class="el" href="struct_box.html">BOX</a> *box2)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_box.html">BOX</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#ac89cee48fb0fa3843d568fdbdb26a162">boxBoundingRegion</a> (<a class="el" href="struct_box.html">BOX</a> *box1, <a class="el" href="struct_box.html">BOX</a> *box2)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a9e2c1c99eda405f1117dfdd2bd92d8f8">boxOverlapFraction</a> (<a class="el" href="struct_box.html">BOX</a> *box1, <a class="el" href="struct_box.html">BOX</a> *box2, <a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> *pfract)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#ad4bfe780cc3ba8ad6b8e82be17f28386">boxContainsPt</a> (<a class="el" href="struct_box.html">BOX</a> *box, <a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> x, <a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> y, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pcontains)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_box.html">BOX</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a1cbfbd753cab482c7ac00023db910034">boxaGetNearestToPt</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxa, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> x, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> y)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a15f4760d5f1aa46dbd3688a2b33d89a3">boxGetCenter</a> (<a class="el" href="struct_box.html">BOX</a> *box, <a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> *pcx, <a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> *pcy)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a00e5892f9c6c64b127c72229b1f5efd2">boxIntersectByLine</a> (<a class="el" href="struct_box.html">BOX</a> *box, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> x, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> y, <a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> slope, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *px1, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *py1, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *px2, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *py2, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pn)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_box.html">BOX</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a474167386fb9f702208ace3de6fc8e09">boxClipToRectangle</a> (<a class="el" href="struct_box.html">BOX</a> *box, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> wi, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> hi)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_box.html">BOX</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a24e42510b722e8805689f82522455cc3">boxRelocateOneSide</a> (<a class="el" href="struct_box.html">BOX</a> *boxd, <a class="el" href="struct_box.html">BOX</a> *boxs, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> loc, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> sideflag)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_box.html">BOX</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#aed8fcef2e9caac631fb5bd65a018175e">boxAdjustSides</a> (<a class="el" href="struct_box.html">BOX</a> *boxd, <a class="el" href="struct_box.html">BOX</a> *boxs, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> delleft, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> delright, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> deltop, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> delbot)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#aa56c130d5c545e703d0a008fa55c1310">boxEqual</a> (<a class="el" href="struct_box.html">BOX</a> *box1, <a class="el" href="struct_box.html">BOX</a> *box2, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *psame)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a5e9b2d2e1921e6710db3c935ccc114e1">boxaEqual</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxa1, <a class="el" href="struct_boxa.html">BOXA</a> *boxa2, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> maxdist, <a class="el" href="struct_numa.html">NUMA</a> **pnaindex, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *psame)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a4c7b344ce775177418eaee2b0a03bd47">boxaJoin</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxad, <a class="el" href="struct_boxa.html">BOXA</a> *boxas, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> istart, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> iend)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a1adc6888b47fedf51f5866ddc8407694">boxaGetExtent</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxa, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pw, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *ph, <a class="el" href="struct_box.html">BOX</a> **pbox)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a2d9b1f0e5e9fe1dcf4b10b0ca8e5470c">boxaGetCoverage</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxa, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> wc, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> hc, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> exactflag, <a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> *pfract)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a5a1705b57be6f7b8f3da4f04f326999b">boxaSizeRange</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxa, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pminw, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pminh, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pmaxw, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pmaxh)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#ad2a8deb180f3c2ef8dcb6e133bdec53f">boxaLocationRange</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxa, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pminx, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pminy, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pmaxx, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pmaxy)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_boxa.html">BOXA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a2f7eac861b2be231f1377d4506692bc0">boxaSelectBySize</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxas, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> width, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> height, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> type, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> relation, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pchanged)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_numa.html">NUMA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#ab5748c529e993aadb996c31b4edcebea">boxaMakeSizeIndicator</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxa, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> width, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> height, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> type, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> relation)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_boxa.html">BOXA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#af001464bd491da0df682929d9929ed41">boxaSelectWithIndicator</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxas, <a class="el" href="struct_numa.html">NUMA</a> *na, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> *pchanged)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_boxa.html">BOXA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#ad4c4475be2ec50ae2a28db76b2cee3d2">boxaPermutePseudorandom</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxas)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_boxa.html">BOXA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#abef3f3424719a3398b063ed4c257fea8">boxaPermuteRandom</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxad, <a class="el" href="struct_boxa.html">BOXA</a> *boxas)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a563a7308bbc44e9a2725480ee895a145">boxaSwapBoxes</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxa, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> i, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> j)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_pta.html">PTA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#ab9afde5d4487662c8976c0c04d1aa28d">boxaConvertToPta</a> (<a class="el" href="struct_boxa.html">BOXA</a> *boxa, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> ncorners)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_boxa.html">BOXA</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="boxfunc1_8c.html#a42208dc68600e013f45365ad9ebb63aa">ptaConvertToBoxa</a> (<a class="el" href="struct_pta.html">PTA</a> *pta, <a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> ncorners)</td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<div class="textblock"><p><a class="el" href="struct_box.html">Box</a> intersection, union, containment; <a class="el" href="struct_boxa.html">Boxa</a> union, extent, permutation. </p>
<div class="fragment"><pre class="fragment"> <a class="code" href="struct_box.html">Box</a> geometry
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a77d61926edc3fd6a9c9dc835215446df">boxContains</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a53d6bcaba9d945e014ded0f6a8797a87">boxIntersects</a>()
<a class="code" href="struct_boxa.html">BOXA</a> *<a class="code" href="boxfunc1_8c.html#a34c4b4f11b13c40d6461822c7153fa20">boxaContainedInBox</a>()
<a class="code" href="struct_boxa.html">BOXA</a> *<a class="code" href="boxfunc1_8c.html#a58d630acf422576941d2e4f54cb3b277">boxaIntersectsBox</a>()
<a class="code" href="struct_boxa.html">BOXA</a> *<a class="code" href="boxfunc1_8c.html#a8fbbe8c99cfc171cc5449bb8f623b0b8">boxaClipToBox</a>()
<a class="code" href="struct_boxa.html">BOXA</a> *<a class="code" href="boxfunc1_8c.html#a42ee9e3a7bfd5168b4fcb70f3ea8ad3c">boxaCombineOverlaps</a>()
<a class="code" href="struct_box.html">BOX</a> *<a class="code" href="boxfunc1_8c.html#a8647c990ccaecd8f886a8e5c1c9300cb">boxOverlapRegion</a>()
<a class="code" href="struct_box.html">BOX</a> *<a class="code" href="boxfunc1_8c.html#ac89cee48fb0fa3843d568fdbdb26a162">boxBoundingRegion</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a9e2c1c99eda405f1117dfdd2bd92d8f8">boxOverlapFraction</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#ad4bfe780cc3ba8ad6b8e82be17f28386">boxContainsPt</a>()
<a class="code" href="struct_box.html">BOX</a> *<a class="code" href="boxfunc1_8c.html#a1cbfbd753cab482c7ac00023db910034">boxaGetNearestToPt</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a00e5892f9c6c64b127c72229b1f5efd2">boxIntersectByLine</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a15f4760d5f1aa46dbd3688a2b33d89a3">boxGetCenter</a>()
<a class="code" href="struct_box.html">BOX</a> *<a class="code" href="boxfunc1_8c.html#a474167386fb9f702208ace3de6fc8e09">boxClipToRectangle</a>()
<a class="code" href="struct_box.html">BOX</a> *<a class="code" href="boxfunc1_8c.html#a24e42510b722e8805689f82522455cc3">boxRelocateOneSide</a>()
<a class="code" href="struct_box.html">BOX</a> *<a class="code" href="boxfunc1_8c.html#aed8fcef2e9caac631fb5bd65a018175e">boxAdjustSides</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#aa56c130d5c545e703d0a008fa55c1310">boxEqual</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a5e9b2d2e1921e6710db3c935ccc114e1">boxaEqual</a>()
<a class="code" href="struct_boxa.html">Boxa</a> combination
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a4c7b344ce775177418eaee2b0a03bd47">boxaJoin</a>()
Other boxa functions
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a1adc6888b47fedf51f5866ddc8407694">boxaGetExtent</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a2d9b1f0e5e9fe1dcf4b10b0ca8e5470c">boxaGetCoverage</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a5a1705b57be6f7b8f3da4f04f326999b">boxaSizeRange</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#ad2a8deb180f3c2ef8dcb6e133bdec53f">boxaLocationRange</a>()
<a class="code" href="struct_boxa.html">BOXA</a> *<a class="code" href="boxfunc1_8c.html#a2f7eac861b2be231f1377d4506692bc0">boxaSelectBySize</a>()
<a class="code" href="struct_numa.html">NUMA</a> *<a class="code" href="boxfunc1_8c.html#ab5748c529e993aadb996c31b4edcebea">boxaMakeSizeIndicator</a>()
<a class="code" href="struct_boxa.html">BOXA</a> *<a class="code" href="boxfunc1_8c.html#af001464bd491da0df682929d9929ed41">boxaSelectWithIndicator</a>()
<a class="code" href="struct_boxa.html">BOXA</a> *<a class="code" href="boxfunc1_8c.html#ad4c4475be2ec50ae2a28db76b2cee3d2">boxaPermutePseudorandom</a>()
<a class="code" href="struct_boxa.html">BOXA</a> *<a class="code" href="boxfunc1_8c.html#abef3f3424719a3398b063ed4c257fea8">boxaPermuteRandom</a>()
<a class="code" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> <a class="code" href="boxfunc1_8c.html#a563a7308bbc44e9a2725480ee895a145">boxaSwapBoxes</a>()
<a class="code" href="struct_pta.html">PTA</a> *<a class="code" href="boxfunc1_8c.html#ab9afde5d4487662c8976c0c04d1aa28d">boxaConvertToPta</a>()
<a class="code" href="struct_boxa.html">BOXA</a> *<a class="code" href="boxfunc1_8c.html#a42208dc68600e013f45365ad9ebb63aa">ptaConvertToBoxa</a>()
</pre></div>
<p>Definition in file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
</div><hr/><h2>Function Documentation</h2>
<a class="anchor" id="a77d61926edc3fd6a9c9dc835215446df"></a><!-- doxytag: member="boxfunc1.c::boxContains" ref="a77d61926edc3fd6a9c9dc835215446df" args="(BOX *box1, BOX *box2, l_int32 *presult)" -->
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<td class="memname"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> boxContains </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box1</em>, </td>
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<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box2</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> * </td>
<td class="paramname"><em>presult</em> </td>
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<p><a class="el" href="boxfunc1_8c.html#a77d61926edc3fd6a9c9dc835215446df">boxContains()</a></p>
<p>Input: box1, box2 &result (<return> 1 if box2 is entirely contained within box1, and 0 otherwise) Return: 0 if OK, 1 on error </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00072">72</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="environ_8h_source.html#l00251">ERROR_INT</a>, <a class="el" href="pix_8h_source.html#l00392">Box::h</a>, <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>, <a class="el" href="pix_8h_source.html#l00391">Box::w</a>, <a class="el" href="pix_8h_source.html#l00389">Box::x</a>, and <a class="el" href="pix_8h_source.html#l00390">Box::y</a>.</p>
<p>Referenced by <a class="el" href="boxfunc1_8c_source.html#l00142">boxaContainedInBox()</a>.</p>
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<a class="anchor" id="a53d6bcaba9d945e014ded0f6a8797a87"></a><!-- doxytag: member="boxfunc1.c::boxIntersects" ref="a53d6bcaba9d945e014ded0f6a8797a87" args="(BOX *box1, BOX *box2, l_int32 *presult)" -->
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<td class="memname"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> boxIntersects </td>
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<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box1</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box2</em>, </td>
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<td></td>
<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> * </td>
<td class="paramname"><em>presult</em> </td>
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<p><a class="el" href="boxfunc1_8c.html#a53d6bcaba9d945e014ded0f6a8797a87">boxIntersects()</a></p>
<p>Input: box1, box2 &result (<return> 1 if any part of box2 is contained in box1, and 0 otherwise) Return: 0 if OK, 1 on error </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00102">102</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="environ_8h_source.html#l00251">ERROR_INT</a>, <a class="el" href="pix_8h_source.html#l00392">Box::h</a>, <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>, <a class="el" href="pix_8h_source.html#l00391">Box::w</a>, <a class="el" href="pix_8h_source.html#l00389">Box::x</a>, and <a class="el" href="pix_8h_source.html#l00390">Box::y</a>.</p>
<p>Referenced by <a class="el" href="boxfunc1_8c_source.html#l00275">boxaCombineOverlaps()</a>, <a class="el" href="boxfunc1_8c_source.html#l00184">boxaIntersectsBox()</a>, and <a class="el" href="blend_8c_source.html#l00902">pixBlendGrayAdapt()</a>.</p>
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<a class="anchor" id="a34c4b4f11b13c40d6461822c7153fa20"></a><!-- doxytag: member="boxfunc1.c::boxaContainedInBox" ref="a34c4b4f11b13c40d6461822c7153fa20" args="(BOXA *boxas, BOX *box)" -->
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<td class="memname"><a class="el" href="struct_boxa.html">BOXA</a>* boxaContainedInBox </td>
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<td class="paramtype"><a class="el" href="struct_boxa.html">BOXA</a> * </td>
<td class="paramname"><em>boxas</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box</em> </td>
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<p><a class="el" href="boxfunc1_8c.html#a34c4b4f11b13c40d6461822c7153fa20">boxaContainedInBox()</a></p>
<p>Input: boxas box (for containment) Return: boxad (boxa with all boxes in boxas that are entirely contained in box), or null on error</p>
<p>Notes: (1) All boxes in boxa that are entirely outside box are removed. </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00142">142</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00474">boxaAddBox()</a>, <a class="el" href="boxbasic_8c_source.html#l00358">boxaCreate()</a>, <a class="el" href="boxbasic_8c_source.html#l00615">boxaGetBox()</a>, <a class="el" href="boxbasic_8c_source.html#l00570">boxaGetCount()</a>, <a class="el" href="boxfunc1_8c_source.html#l00072">boxContains()</a>, <a class="el" href="boxbasic_8c_source.html#l00242">boxDestroy()</a>, <a class="el" href="environ_8h_source.html#l00250">ERROR_PTR</a>, <a class="el" href="pix_8h_source.html#l00598">L_CLONE</a>, <a class="el" href="pix_8h_source.html#l00597">L_COPY</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, and <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>.</p>
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<a class="anchor" id="a58d630acf422576941d2e4f54cb3b277"></a><!-- doxytag: member="boxfunc1.c::boxaIntersectsBox" ref="a58d630acf422576941d2e4f54cb3b277" args="(BOXA *boxas, BOX *box)" -->
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<td class="memname"><a class="el" href="struct_boxa.html">BOXA</a>* boxaIntersectsBox </td>
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<td class="paramtype"><a class="el" href="struct_boxa.html">BOXA</a> * </td>
<td class="paramname"><em>boxas</em>, </td>
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<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box</em> </td>
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<p><a class="el" href="boxfunc1_8c.html#a58d630acf422576941d2e4f54cb3b277">boxaIntersectsBox()</a></p>
<p>Input: boxas box (for intersecting) Return boxad (boxa with all boxes in boxas that intersect box), or null on error</p>
<p>Notes: (1) All boxes in boxa that intersect with box (i.e., are completely or partially contained in box) are retained. </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00184">184</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00474">boxaAddBox()</a>, <a class="el" href="boxbasic_8c_source.html#l00358">boxaCreate()</a>, <a class="el" href="boxbasic_8c_source.html#l00615">boxaGetBox()</a>, <a class="el" href="boxbasic_8c_source.html#l00570">boxaGetCount()</a>, <a class="el" href="boxbasic_8c_source.html#l00242">boxDestroy()</a>, <a class="el" href="boxfunc1_8c_source.html#l00102">boxIntersects()</a>, <a class="el" href="environ_8h_source.html#l00250">ERROR_PTR</a>, <a class="el" href="pix_8h_source.html#l00598">L_CLONE</a>, <a class="el" href="pix_8h_source.html#l00597">L_COPY</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, and <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>.</p>
<p>Referenced by <a class="el" href="partition_8c_source.html#l00168">boxaGetWhiteblocks()</a>.</p>
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<a class="anchor" id="a8fbbe8c99cfc171cc5449bb8f623b0b8"></a><!-- doxytag: member="boxfunc1.c::boxaClipToBox" ref="a8fbbe8c99cfc171cc5449bb8f623b0b8" args="(BOXA *boxas, BOX *box)" -->
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<td class="memname"><a class="el" href="struct_boxa.html">BOXA</a>* boxaClipToBox </td>
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<td class="paramtype"><a class="el" href="struct_boxa.html">BOXA</a> * </td>
<td class="paramname"><em>boxas</em>, </td>
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<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box</em> </td>
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<p><a class="el" href="boxfunc1_8c.html#a8fbbe8c99cfc171cc5449bb8f623b0b8">boxaClipToBox()</a></p>
<p>Input: boxas box (for clipping) Return boxad (boxa with boxes in boxas clipped to box), or null on error</p>
<p>Notes: (1) All boxes in boxa not intersecting with box are removed, and the remaining boxes are clipped to box. </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00226">226</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00474">boxaAddBox()</a>, <a class="el" href="boxbasic_8c_source.html#l00358">boxaCreate()</a>, <a class="el" href="boxbasic_8c_source.html#l00615">boxaGetBox()</a>, <a class="el" href="boxbasic_8c_source.html#l00570">boxaGetCount()</a>, <a class="el" href="boxbasic_8c_source.html#l00242">boxDestroy()</a>, <a class="el" href="boxfunc1_8c_source.html#l00345">boxOverlapRegion()</a>, <a class="el" href="environ_8h_source.html#l00250">ERROR_PTR</a>, <a class="el" href="pix_8h_source.html#l00598">L_CLONE</a>, <a class="el" href="pix_8h_source.html#l00596">L_INSERT</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, and <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>.</p>
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<a class="anchor" id="a42ee9e3a7bfd5168b4fcb70f3ea8ad3c"></a><!-- doxytag: member="boxfunc1.c::boxaCombineOverlaps" ref="a42ee9e3a7bfd5168b4fcb70f3ea8ad3c" args="(BOXA *boxas)" -->
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<td class="memname"><a class="el" href="struct_boxa.html">BOXA</a>* boxaCombineOverlaps </td>
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<td class="paramname"><em>boxas</em></td><td>)</td>
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<p><a class="el" href="boxfunc1_8c.html#a42ee9e3a7bfd5168b4fcb70f3ea8ad3c">boxaCombineOverlaps()</a></p>
<p>Input: boxas Return: boxad (where each set of boxes in boxas that overlap are combined into a single bounding box in boxad), or null on error.</p>
<p>Notes: (1) If there are no overlapping boxes, it simply returns a copy of . (2) The alternative method of painting each rectanle and finding the 4-connected components gives the wrong result, because two non-overlapping rectangles, when rendered, can still be 4-connected, and hence they will be joined. (3) A bad case is to have n boxes, none of which overlap. Then you have one iteration with O(n^2) compares. This is still faster than painting each rectangle and finding the connected components, even for thousands of rectangles. </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00275">275</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00474">boxaAddBox()</a>, <a class="el" href="boxbasic_8c_source.html#l00392">boxaCopy()</a>, <a class="el" href="boxbasic_8c_source.html#l00358">boxaCreate()</a>, <a class="el" href="boxbasic_8c_source.html#l00436">boxaDestroy()</a>, <a class="el" href="boxbasic_8c_source.html#l00615">boxaGetBox()</a>, <a class="el" href="boxbasic_8c_source.html#l00570">boxaGetCount()</a>, <a class="el" href="boxbasic_8c_source.html#l00726">boxaReplaceBox()</a>, <a class="el" href="boxfunc1_8c_source.html#l00385">boxBoundingRegion()</a>, <a class="el" href="boxbasic_8c_source.html#l00242">boxDestroy()</a>, <a class="el" href="boxfunc1_8c_source.html#l00102">boxIntersects()</a>, <a class="el" href="environ_8h_source.html#l00250">ERROR_PTR</a>, <a class="el" href="environ_8h_source.html#l00179">FALSE</a>, <a class="el" href="pix_8h_source.html#l00598">L_CLONE</a>, <a class="el" href="pix_8h_source.html#l00597">L_COPY</a>, <a class="el" href="pix_8h_source.html#l00596">L_INSERT</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>, and <a class="el" href="environ_8h_source.html#l00175">TRUE</a>.</p>
<p>Referenced by <a class="el" href="overlap__reg_8c_source.html#l00029">main()</a>.</p>
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<a class="anchor" id="a8647c990ccaecd8f886a8e5c1c9300cb"></a><!-- doxytag: member="boxfunc1.c::boxOverlapRegion" ref="a8647c990ccaecd8f886a8e5c1c9300cb" args="(BOX *box1, BOX *box2)" -->
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<td class="memname"><a class="el" href="struct_box.html">BOX</a>* boxOverlapRegion </td>
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<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box1</em>, </td>
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<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box2</em> </td>
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<p><a class="el" href="boxfunc1_8c.html#a8647c990ccaecd8f886a8e5c1c9300cb">boxOverlapRegion()</a></p>
<p>Input: box1, box2 (two boxes) Return: box (of overlap region between input boxes), or null if no overlap or on error </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00345">345</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00133">boxCreate()</a>, <a class="el" href="environ_8h_source.html#l00250">ERROR_PTR</a>, <a class="el" href="pix_8h_source.html#l00392">Box::h</a>, <a class="el" href="environ_8h_source.html#l00151">L_MIN</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>, <a class="el" href="pix_8h_source.html#l00391">Box::w</a>, <a class="el" href="pix_8h_source.html#l00389">Box::x</a>, and <a class="el" href="pix_8h_source.html#l00390">Box::y</a>.</p>
<p>Referenced by <a class="el" href="boxfunc1_8c_source.html#l00226">boxaClipToBox()</a>, and <a class="el" href="boxfunc1_8c_source.html#l00421">boxOverlapFraction()</a>.</p>
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<a class="anchor" id="ac89cee48fb0fa3843d568fdbdb26a162"></a><!-- doxytag: member="boxfunc1.c::boxBoundingRegion" ref="ac89cee48fb0fa3843d568fdbdb26a162" args="(BOX *box1, BOX *box2)" -->
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<td class="memname"><a class="el" href="struct_box.html">BOX</a>* boxBoundingRegion </td>
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<td class="paramname"><em>box1</em>, </td>
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<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box2</em> </td>
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<p><a class="el" href="boxfunc1_8c.html#ac89cee48fb0fa3843d568fdbdb26a162">boxBoundingRegion()</a></p>
<p>Input: box1, box2 (two boxes) Return: box (of bounding region containing the input boxes), or null on error </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00385">385</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00133">boxCreate()</a>, <a class="el" href="environ_8h_source.html#l00250">ERROR_PTR</a>, <a class="el" href="pix_8h_source.html#l00392">Box::h</a>, <a class="el" href="environ_8h_source.html#l00155">L_MAX</a>, <a class="el" href="environ_8h_source.html#l00151">L_MIN</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>, <a class="el" href="pix_8h_source.html#l00391">Box::w</a>, <a class="el" href="pix_8h_source.html#l00389">Box::x</a>, and <a class="el" href="pix_8h_source.html#l00390">Box::y</a>.</p>
<p>Referenced by <a class="el" href="boxfunc1_8c_source.html#l00275">boxaCombineOverlaps()</a>.</p>
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<a class="anchor" id="a9e2c1c99eda405f1117dfdd2bd92d8f8"></a><!-- doxytag: member="boxfunc1.c::boxOverlapFraction" ref="a9e2c1c99eda405f1117dfdd2bd92d8f8" args="(BOX *box1, BOX *box2, l_float32 *pfract)" -->
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<td class="paramname"><em>box1</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> * </td>
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<p><a class="el" href="boxfunc1_8c.html#a9e2c1c99eda405f1117dfdd2bd92d8f8">boxOverlapFraction()</a></p>
<p>Input: box1, box2 (two boxes) &fract (<return> the fraction of box2 overlapped by box1) Return: 0 if OK, 1 on error.</p>
<p>Notes: (1) The result depends on the order of the input boxes, because the overlap is taken as a fraction of box2. </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00421">421</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00242">boxDestroy()</a>, <a class="el" href="boxbasic_8c_source.html#l00274">boxGetGeometry()</a>, <a class="el" href="boxfunc1_8c_source.html#l00345">boxOverlapRegion()</a>, <a class="el" href="environ_8h_source.html#l00251">ERROR_INT</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, and <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>.</p>
<p>Referenced by <a class="el" href="partition_8c_source.html#l00593">boxaPruneSortedOnOverlap()</a>, and <a class="el" href="partition_8c_source.html#l00540">boxCheckIfOverlapIsBig()</a>.</p>
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<a class="anchor" id="ad4bfe780cc3ba8ad6b8e82be17f28386"></a><!-- doxytag: member="boxfunc1.c::boxContainsPt" ref="ad4bfe780cc3ba8ad6b8e82be17f28386" args="(BOX *box, l_float32 x, l_float32 y, l_int32 *pcontains)" -->
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<td class="memname"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> boxContainsPt </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> </td>
<td class="paramname"><em>x</em>, </td>
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<p><a class="el" href="boxfunc1_8c.html#ad4bfe780cc3ba8ad6b8e82be17f28386">boxContainsPt()</a></p>
<p>Input: box x, y (a point) &contains (<return> 1 if box contains point; 0 otherwise) Return: 0 if OK, 1 on error. </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00458">458</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00274">boxGetGeometry()</a>, <a class="el" href="environ_8h_source.html#l00251">ERROR_INT</a>, and <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>.</p>
<p>Referenced by <a class="el" href="ptafunc1_8c_source.html#l00537">ptaGetInsideBox()</a>.</p>
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<a class="anchor" id="a1cbfbd753cab482c7ac00023db910034"></a><!-- doxytag: member="boxfunc1.c::boxaGetNearestToPt" ref="a1cbfbd753cab482c7ac00023db910034" args="(BOXA *boxa, l_int32 x, l_int32 y)" -->
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<td class="memname"><a class="el" href="struct_box.html">BOX</a>* boxaGetNearestToPt </td>
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<td class="paramtype"><a class="el" href="struct_boxa.html">BOXA</a> * </td>
<td class="paramname"><em>boxa</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td>
<td class="paramname"><em>x</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td>
<td class="paramname"><em>y</em> </td>
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<p><a class="el" href="boxfunc1_8c.html#a1cbfbd753cab482c7ac00023db910034">boxaGetNearestToPt()</a></p>
<p>Input: boxa x, y (point) Return box (box with centroid closest to the given point [x,y]), or NULL if no boxes in boxa)</p>
<p>Notes: (1) Uses euclidean distance between centroid and point. </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00491">491</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00615">boxaGetBox()</a>, <a class="el" href="boxbasic_8c_source.html#l00570">boxaGetCount()</a>, <a class="el" href="boxbasic_8c_source.html#l00242">boxDestroy()</a>, <a class="el" href="boxfunc1_8c_source.html#l00533">boxGetCenter()</a>, <a class="el" href="environ_8h_source.html#l00250">ERROR_PTR</a>, <a class="el" href="pix_8h_source.html#l00598">L_CLONE</a>, <a class="el" href="pix_8h_source.html#l00597">L_COPY</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, and <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>.</p>
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<a class="anchor" id="a15f4760d5f1aa46dbd3688a2b33d89a3"></a><!-- doxytag: member="boxfunc1.c::boxGetCenter" ref="a15f4760d5f1aa46dbd3688a2b33d89a3" args="(BOX *box, l_float32 *pcx, l_float32 *pcy)" -->
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<td class="memname"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> boxGetCenter </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_box.html">BOX</a> * </td>
<td class="paramname"><em>box</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> * </td>
<td class="paramname"><em>pcx</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#af59419416d96ecf5fca70c8d05adb456">l_float32</a> * </td>
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<p><a class="el" href="boxfunc1_8c.html#a15f4760d5f1aa46dbd3688a2b33d89a3">boxGetCenter()</a></p>
<p>Input: box &cx, &cy (<return> location of center of box) Return 0 if OK, 1 on error </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00533">533</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00274">boxGetGeometry()</a>, <a class="el" href="environ_8h_source.html#l00251">ERROR_INT</a>, and <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>.</p>
<p>Referenced by <a class="el" href="boxfunc1_8c_source.html#l00491">boxaGetNearestToPt()</a>, and <a class="el" href="partition_8c_source.html#l00460">boxaSelectPivotBox()</a>.</p>
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<a class="anchor" id="a00e5892f9c6c64b127c72229b1f5efd2"></a><!-- doxytag: member="boxfunc1.c::boxIntersectByLine" ref="a00e5892f9c6c64b127c72229b1f5efd2" args="(BOX *box, l_int32 x, l_int32 y, l_float32 slope, l_int32 *px1, l_int32 *py1, l_int32 *px2, l_int32 *py2, l_int32 *pn)" -->
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<td class="paramname"><em>x</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> * </td>
<td class="paramname"><em>px1</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> * </td>
<td class="paramname"><em>py1</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> * </td>
<td class="paramname"><em>px2</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> * </td>
<td class="paramname"><em>py2</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> * </td>
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<p><a class="el" href="boxfunc1_8c.html#a00e5892f9c6c64b127c72229b1f5efd2">boxIntersectByLine()</a></p>
<p>Input: box x, y (point that line goes through) slope (of line) (&x1, &y1) (<return> 1st point of intersection with box) (&x2, &y2) (<return> 2nd point of intersection with box) &n (<return> number of points of intersection) Return: 0 if OK, 1 on error</p>
<p>Notes: (1) If the intersection is at only one point (a corner), the coordinates are returned in (x1, y1). (2) Represent a vertical line by one with a large but finite slope. </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00571">571</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00274">boxGetGeometry()</a>, <a class="el" href="environ_8h_source.html#l00251">ERROR_INT</a>, <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>, <a class="el" href="ptabasic_8c_source.html#l00262">ptaAddPt()</a>, <a class="el" href="ptabasic_8c_source.html#l00083">ptaCreate()</a>, <a class="el" href="ptabasic_8c_source.html#l00156">ptaDestroy()</a>, <a class="el" href="ptabasic_8c_source.html#l00346">ptaGetCount()</a>, and <a class="el" href="ptabasic_8c_source.html#l00397">ptaGetIPt()</a>.</p>
<p>Referenced by <a class="el" href="graphics_8c_source.html#l00301">generatePtaHashBox()</a>.</p>
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<a class="anchor" id="a474167386fb9f702208ace3de6fc8e09"></a><!-- doxytag: member="boxfunc1.c::boxClipToRectangle" ref="a474167386fb9f702208ace3de6fc8e09" args="(BOX *box, l_int32 wi, l_int32 hi)" -->
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<td class="memname"><a class="el" href="struct_box.html">BOX</a>* boxClipToRectangle </td>
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<p><a class="el" href="boxfunc1_8c.html#a474167386fb9f702208ace3de6fc8e09">boxClipToRectangle()</a></p>
<p>Input: box wi, hi (rectangle representing image) Return: part of box within given rectangle, or NULL on error or if box is entirely outside the rectangle</p>
<p>Notes: (1) This can be used to clip a rectangle to an image. The clipping rectangle is assumed to have a UL corner at (0, 0), and a LR corner at (wi - 1, hi - 1). </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00668">668</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00196">boxCopy()</a>, <a class="el" href="environ_8h_source.html#l00250">ERROR_PTR</a>, <a class="el" href="pix_8h_source.html#l00392">Box::h</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>, <a class="el" href="pix_8h_source.html#l00391">Box::w</a>, <a class="el" href="pix_8h_source.html#l00389">Box::x</a>, and <a class="el" href="pix_8h_source.html#l00390">Box::y</a>.</p>
<p>Referenced by <a class="el" href="boxfunc1_8c_source.html#l01054">boxaGetCoverage()</a>, <a class="el" href="pix5_8c_source.html#l00698">pixClipRectangle()</a>, <a class="el" href="quadtree_8c_source.html#l00244">pixMeanInRectangle()</a>, <a class="el" href="pix5_8c_source.html#l01305">pixScanForEdge()</a>, <a class="el" href="pix5_8c_source.html#l01060">pixScanForForeground()</a>, <a class="el" href="pix2_8c_source.html#l00859">pixSetInRectArbitrary()</a>, <a class="el" href="pix3_8c_source.html#l01901">pixSumPixelValues()</a>, and <a class="el" href="quadtree_8c_source.html#l00321">pixVarianceInRectangle()</a>.</p>
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<a class="anchor" id="a24e42510b722e8805689f82522455cc3"></a><!-- doxytag: member="boxfunc1.c::boxRelocateOneSide" ref="a24e42510b722e8805689f82522455cc3" args="(BOX *boxd, BOX *boxs, l_int32 loc, l_int32 sideflag)" -->
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<p><a class="el" href="boxfunc1_8c.html#a24e42510b722e8805689f82522455cc3">boxRelocateOneSide()</a></p>
<p>Input: boxd (<optional>; this can be null, equal to boxs, or different from boxs); boxs (starting box; to have one side relocated) loc (new location of the side that is changing) sideflag (L_FROM_LEFT, etc., indicating the side that moves) Return: boxd, or null on error or if the computed boxd has width or height <= 0.</p>
<p>Notes: (1) Set boxd == NULL to get new box; boxd == boxs for in-place; or otherwise to resize existing boxd. (2) For usage, suggest one of these: boxd = boxRelocateOneSide(NULL, boxs, ...); // new boxRelocateOneSide(boxs, boxs, ...); // in-place boxRelocateOneSide(boxd, boxs, ...); // other </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00719">719</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00196">boxCopy()</a>, <a class="el" href="boxbasic_8c_source.html#l00274">boxGetGeometry()</a>, <a class="el" href="boxbasic_8c_source.html#l00304">boxSetGeometry()</a>, <a class="el" href="environ_8h_source.html#l00250">ERROR_PTR</a>, <a class="el" href="pix_8h_source.html#l00821">L_FROM_BOTTOM</a>, <a class="el" href="pix_8h_source.html#l00818">L_FROM_LEFT</a>, <a class="el" href="pix_8h_source.html#l00819">L_FROM_RIGHT</a>, <a class="el" href="pix_8h_source.html#l00820">L_FROM_TOP</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, and <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>.</p>
<p>Referenced by <a class="el" href="pix5_8c_source.html#l01177">pixClipBoxToEdges()</a>.</p>
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<a class="anchor" id="aed8fcef2e9caac631fb5bd65a018175e"></a><!-- doxytag: member="boxfunc1.c::boxAdjustSides" ref="aed8fcef2e9caac631fb5bd65a018175e" args="(BOX *boxd, BOX *boxs, l_int32 delleft, l_int32 delright, l_int32 deltop, l_int32 delbot)" -->
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<p><a class="el" href="boxfunc1_8c.html#aed8fcef2e9caac631fb5bd65a018175e">boxAdjustSides()</a></p>
<p>Input: boxd (<optional>; this can be null, equal to boxs, or different from boxs) boxs (starting box; to have sides adjusted) delleft, delright, deltop, delbot (changes in location of each side) Return: boxd, or null on error or if the computed boxd has width or height <= 0.</p>
<p>Notes: (1) Set boxd == NULL to get new box; boxd == boxs for in-place; or otherwise to resize existing boxd. (2) For usage, suggest one of these: boxd = boxAdjustSides(NULL, boxs, ...); // new boxAdjustSides(boxs, boxs, ...); // in-place boxAdjustSides(boxd, boxs, ...); // other (1) New box dimensions are cropped at left and top to x >= 0 and y >= 0. (2) For example, to expand in-place by 20 pixels on each side, use boxAdjustSides(box, box, -20, 20, -20, 20); </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00769">769</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00133">boxCreate()</a>, <a class="el" href="boxbasic_8c_source.html#l00274">boxGetGeometry()</a>, <a class="el" href="boxbasic_8c_source.html#l00304">boxSetGeometry()</a>, <a class="el" href="environ_8h_source.html#l00250">ERROR_PTR</a>, <a class="el" href="environ_8h_source.html#l00155">L_MAX</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, and <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>.</p>
<p>Referenced by <a class="el" href="pixafunc1_8c_source.html#l01181">pixaAddBorderGeneral()</a>.</p>
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<a class="anchor" id="aa56c130d5c545e703d0a008fa55c1310"></a><!-- doxytag: member="boxfunc1.c::boxEqual" ref="aa56c130d5c545e703d0a008fa55c1310" args="(BOX *box1, BOX *box2, l_int32 *psame)" -->
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<p><a class="el" href="boxfunc1_8c.html#aa56c130d5c545e703d0a008fa55c1310">boxEqual()</a></p>
<p>Input: box1 box2 &same (<return> 1 if equal; 0 otherwise) Return 0 if OK, 1 on error </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00812">812</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="environ_8h_source.html#l00251">ERROR_INT</a>, <a class="el" href="pix_8h_source.html#l00392">Box::h</a>, <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>, <a class="el" href="pix_8h_source.html#l00391">Box::w</a>, <a class="el" href="pix_8h_source.html#l00389">Box::x</a>, and <a class="el" href="pix_8h_source.html#l00390">Box::y</a>.</p>
<p>Referenced by <a class="el" href="boxfunc1_8c_source.html#l00857">boxaEqual()</a>.</p>
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<td class="memname"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> boxaEqual </td>
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<td class="paramtype"><a class="el" href="struct_boxa.html">BOXA</a> * </td>
<td class="paramname"><em>boxa1</em>, </td>
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<td class="paramtype"><a class="el" href="struct_boxa.html">BOXA</a> * </td>
<td class="paramname"><em>boxa2</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> </td>
<td class="paramname"><em>maxdist</em>, </td>
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<td class="paramtype"><a class="el" href="struct_numa.html">NUMA</a> ** </td>
<td class="paramname"><em>pnaindex</em>, </td>
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<td class="paramtype"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> * </td>
<td class="paramname"><em>psame</em> </td>
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<p><a class="el" href="boxfunc1_8c.html#a5e9b2d2e1921e6710db3c935ccc114e1">boxaEqual()</a></p>
<p>Input: boxa1 boxa2 maxdist &naindex (<optional return>=""> index array of correspondences &same (<return> 1 if equal; 0 otherwise) Return 0 if OK, 1 on error</p>
<p>Notes: (1) The two boxa are the "same" if they contain the same boxes and each box is within of its counterpart in their positions within the boxa. This allows for small rearrangements. Use 0 for maxdist if the boxa must be identical. (2) This applies only to geometry and ordering; refcounts are not considered. (3) allows some latitude in the ordering of the boxes. For the boxa to be the "same", corresponding boxes must be within of each other. Note that for large , we should use a hash function for efficiency. (4) naindex[i] gives the position of the box in boxa2 that corresponds to box i in boxa1. It is only returned if the boxa are equal. </p>
<p>Definition at line <a class="el" href="boxfunc1_8c_source.html#l00857">857</a> of file <a class="el" href="boxfunc1_8c_source.html">boxfunc1.c</a>.</p>
<p>References <a class="el" href="boxbasic_8c_source.html#l00615">boxaGetBox()</a>, <a class="el" href="boxbasic_8c_source.html#l00570">boxaGetCount()</a>, <a class="el" href="boxbasic_8c_source.html#l00242">boxDestroy()</a>, <a class="el" href="boxfunc1_8c_source.html#l00812">boxEqual()</a>, <a class="el" href="environ_8h_source.html#l00214">CALLOC</a>, <a class="el" href="environ_8h_source.html#l00251">ERROR_INT</a>, <a class="el" href="environ_8h_source.html#l00179">FALSE</a>, <a class="el" href="environ_8h_source.html#l00216">FREE</a>, <a class="el" href="pix_8h_source.html#l00598">L_CLONE</a>, <a class="el" href="environ_8h_source.html#l00155">L_MAX</a>, <a class="el" href="environ_8h_source.html#l00151">L_MIN</a>, <a class="el" href="environ_8h_source.html#l00171">NULL</a>, <a class="el" href="numabasic_8c_source.html#l00292">numaDestroy()</a>, <a class="el" href="numafunc1_8c_source.html#l00645">numaMakeConstant()</a>, <a class="el" href="numabasic_8c_source.html#l00528">numaReplaceNumber()</a>, <a class="el" href="environ_8h_source.html#l00249">PROCNAME</a>, and <a class="el" href="environ_8h_source.html#l00175">TRUE</a>.</p>
<p>Referenced by <a class="el" href="ptra2__reg_8c_source.html#l00047">BoxaSortTest()</a>, <a class="el" href="pixafunc1_8c_source.html#l01507">pixaEqual()</a>, and <a class="el" href="ptra2__reg_8c_source.html#l00166">PixaSortTest()</a>.</p>
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<a class="anchor" id="a4c7b344ce775177418eaee2b0a03bd47"></a><!-- doxytag: member="boxfunc1.c::boxaJoin" ref="a4c7b344ce775177418eaee2b0a03bd47" args="(BOXA *boxad, BOXA *boxas, l_int32 istart, l_int32 iend)" -->
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<td class="memname"><a class="el" href="environ_8h.html#a9085c7874153c280a4171244aa052e4e">l_int32</a> boxaJoin </td>
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<td class="paramtype"><a class="el" href="struct_boxa.html">BOXA</a> * </td>
<td class="paramname"><em>boxad</em>, </td>
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<td class="paramname"><em>boxas</em>, </td>
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