861 lines
46 KiB
HTML
861 lines
46 KiB
HTML
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<li class="navelem"><a class="el" href="namespacegeos.html">geos</a></li><li class="navelem"><a class="el" href="namespacegeos_1_1operation.html">operation</a></li><li class="navelem"><a class="el" href="namespacegeos_1_1operation_1_1buffer.html">buffer</a></li><li class="navelem"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html">BufferParameters</a></li> </ul>
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<a href="#pub-types">Public Types</a> |
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<div class="title">geos::operation::buffer::BufferParameters Class Reference</div> </div>
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<p>Contains the parameters which describe how a buffer should be constructed.
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<a href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#details">More...</a></p>
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<p><code>#include <<a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>></code></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
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Public Types</h2></td></tr>
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<tr class="memitem:a4712bec3a5a2bb5c28ab43b3fe327950"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> { <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950a2115b456f33264168ae298f31cd10e84">CAP_ROUND</a> = 1,
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<a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950aedd88ac809cfcc7b2cc5e0300d6056a0">CAP_FLAT</a> = 2,
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<a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950a1915b38145310e6c86cb0dc5231dd545">CAP_SQUARE</a> = 3
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}<tr class="memdesc:a4712bec3a5a2bb5c28ab43b3fe327950"><td class="mdescLeft"> </td><td class="mdescRight">End cap styles. <a href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">More...</a><br /></td></tr>
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<tr class="separator:a4712bec3a5a2bb5c28ab43b3fe327950"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae40a3908d24a3ac91212b35f8464b9c7"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">JoinStyle</a> { <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7a9ded695910037ff23c849ddc68e73023">JOIN_ROUND</a> = 1,
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<a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7a4f2854d8ec73a4843a22a51b8a2ecc09">JOIN_MITRE</a> = 2,
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<a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7ac2a1117219d301712e949c2257f7b3d1">JOIN_BEVEL</a> = 3
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}<tr class="memdesc:ae40a3908d24a3ac91212b35f8464b9c7"><td class="mdescLeft"> </td><td class="mdescRight">Join styles. <a href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">More...</a><br /></td></tr>
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</td></tr>
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<tr class="separator:ae40a3908d24a3ac91212b35f8464b9c7"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:ac5ad430885bae6431cc81818c8e829ca"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ac5ad430885bae6431cc81818c8e829ca">BufferParameters</a> ()</td></tr>
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<tr class="memdesc:ac5ad430885bae6431cc81818c8e829ca"><td class="mdescLeft"> </td><td class="mdescRight">Creates a default set of parameters. <a href="#ac5ad430885bae6431cc81818c8e829ca">More...</a><br /></td></tr>
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<tr class="separator:ac5ad430885bae6431cc81818c8e829ca"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a29406a15c6e0e7dbf2f76e909b270a42"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a29406a15c6e0e7dbf2f76e909b270a42">BufferParameters</a> (int <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ac46bc8d9ac2364226a11268fcdd1224f">quadrantSegments</a>)</td></tr>
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<tr class="separator:a29406a15c6e0e7dbf2f76e909b270a42"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad45740900f2767cb6308ce5a269518fe"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ad45740900f2767cb6308ce5a269518fe">BufferParameters</a> (int <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ac46bc8d9ac2364226a11268fcdd1224f">quadrantSegments</a>, <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae5a906a6cdb63784d2f7f7453b2052f7">endCapStyle</a>)</td></tr>
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<tr class="memdesc:ad45740900f2767cb6308ce5a269518fe"><td class="mdescLeft"> </td><td class="mdescRight">Creates a set of parameters with the given quadrantSegments and endCapStyle values. <a href="#ad45740900f2767cb6308ce5a269518fe">More...</a><br /></td></tr>
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<tr class="separator:ad45740900f2767cb6308ce5a269518fe"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a7c4bf23175c28f4f1463f1e53c88ee94"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a7c4bf23175c28f4f1463f1e53c88ee94">BufferParameters</a> (int <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ac46bc8d9ac2364226a11268fcdd1224f">quadrantSegments</a>, <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae5a906a6cdb63784d2f7f7453b2052f7">endCapStyle</a>, <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">JoinStyle</a> <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a6812973372f9efb911bcfd76b3997c0a">joinStyle</a>, double <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a0ee5ab7164407bfa06efce132d371ec0">mitreLimit</a>)</td></tr>
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<tr class="memdesc:a7c4bf23175c28f4f1463f1e53c88ee94"><td class="mdescLeft"> </td><td class="mdescRight">Creates a set of parameters with the given parameter values. <a href="#a7c4bf23175c28f4f1463f1e53c88ee94">More...</a><br /></td></tr>
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<tr class="separator:a7c4bf23175c28f4f1463f1e53c88ee94"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aab767f98e62c4d1a5c85137d378e2837"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#aab767f98e62c4d1a5c85137d378e2837">getQuadrantSegments</a> () const </td></tr>
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<tr class="separator:aab767f98e62c4d1a5c85137d378e2837"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:adc5559aa27d60c7b40aba6d5c13c0c45"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#adc5559aa27d60c7b40aba6d5c13c0c45">setQuadrantSegments</a> (int quadSegs)</td></tr>
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<tr class="memdesc:adc5559aa27d60c7b40aba6d5c13c0c45"><td class="mdescLeft"> </td><td class="mdescRight">Sets the number of line segments used to approximate an angle fillet. <a href="#adc5559aa27d60c7b40aba6d5c13c0c45">More...</a><br /></td></tr>
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<tr class="separator:adc5559aa27d60c7b40aba6d5c13c0c45"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad5876a1313f20facf9bc652d9a32b2e3"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ad5876a1313f20facf9bc652d9a32b2e3">getEndCapStyle</a> () const </td></tr>
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<tr class="separator:ad5876a1313f20facf9bc652d9a32b2e3"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a1b884eaa4f6bb49cb7547f6cbf2035f7"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a1b884eaa4f6bb49cb7547f6cbf2035f7">setEndCapStyle</a> (<a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> style)</td></tr>
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<tr class="separator:a1b884eaa4f6bb49cb7547f6cbf2035f7"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a57d08288074f88337e300537912c91b4"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">JoinStyle</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a57d08288074f88337e300537912c91b4">getJoinStyle</a> () const </td></tr>
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<tr class="separator:a57d08288074f88337e300537912c91b4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a9b8fb6b023de5b70e658c81dc7a78f8e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a9b8fb6b023de5b70e658c81dc7a78f8e">setJoinStyle</a> (<a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">JoinStyle</a> style)</td></tr>
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<tr class="memdesc:a9b8fb6b023de5b70e658c81dc7a78f8e"><td class="mdescLeft"> </td><td class="mdescRight">Sets the join style for outside (reflex) corners between line segments. <a href="#a9b8fb6b023de5b70e658c81dc7a78f8e">More...</a><br /></td></tr>
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<tr class="separator:a9b8fb6b023de5b70e658c81dc7a78f8e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:acbb8b435cb2d4ed8e66e3fa7a9c377e9"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#acbb8b435cb2d4ed8e66e3fa7a9c377e9">getMitreLimit</a> () const </td></tr>
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<tr class="separator:acbb8b435cb2d4ed8e66e3fa7a9c377e9"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a1c30adfb1d8385b59b58073ec6213410"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a1c30adfb1d8385b59b58073ec6213410">setMitreLimit</a> (double limit)</td></tr>
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<tr class="separator:a1c30adfb1d8385b59b58073ec6213410"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae2a7d92145547fb6e2852c41c5353700"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae2a7d92145547fb6e2852c41c5353700">setSingleSided</a> (bool p_isSingleSided)</td></tr>
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<tr class="separator:ae2a7d92145547fb6e2852c41c5353700"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0e7cf00e4b1bb3b6a4bd5e2a3709d535"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a0e7cf00e4b1bb3b6a4bd5e2a3709d535">isSingleSided</a> () const </td></tr>
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<tr class="separator:a0e7cf00e4b1bb3b6a4bd5e2a3709d535"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
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Static Public Member Functions</h2></td></tr>
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<tr class="memitem:aa1c559bb2c9f731334878de316c1c6f1"><td class="memItemLeft" align="right" valign="top">static double </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#aa1c559bb2c9f731334878de316c1c6f1">bufferDistanceError</a> (int quadSegs)</td></tr>
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<tr class="memdesc:aa1c559bb2c9f731334878de316c1c6f1"><td class="mdescLeft"> </td><td class="mdescRight">Computes the maximum distance error due to a given level of approximation to a true arc. <a href="#aa1c559bb2c9f731334878de316c1c6f1">More...</a><br /></td></tr>
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<tr class="separator:aa1c559bb2c9f731334878de316c1c6f1"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-attribs"></a>
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Static Public Attributes</h2></td></tr>
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<tr class="memitem:ab0a64ab1030d5dc576449dbf9ecde9e8"><td class="memItemLeft" align="right" valign="top">static const int </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ab0a64ab1030d5dc576449dbf9ecde9e8">DEFAULT_QUADRANT_SEGMENTS</a> = 8</td></tr>
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<tr class="memdesc:ab0a64ab1030d5dc576449dbf9ecde9e8"><td class="mdescLeft"> </td><td class="mdescRight">The default number of facets into which to divide a fillet of 90 degrees. <a href="#ab0a64ab1030d5dc576449dbf9ecde9e8">More...</a><br /></td></tr>
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<tr class="separator:ab0a64ab1030d5dc576449dbf9ecde9e8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a5c2777985fa44e98de4d37b49956bad7"><td class="memItemLeft" align="right" valign="top">static const double </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a5c2777985fa44e98de4d37b49956bad7">DEFAULT_MITRE_LIMIT</a></td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pri-attribs"></a>
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Private Attributes</h2></td></tr>
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<tr class="memitem:ac46bc8d9ac2364226a11268fcdd1224f"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ac46bc8d9ac2364226a11268fcdd1224f">quadrantSegments</a></td></tr>
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<tr class="memdesc:ac46bc8d9ac2364226a11268fcdd1224f"><td class="mdescLeft"> </td><td class="mdescRight">Defaults to DEFAULT_QUADRANT_SEGMENTS;. <a href="#ac46bc8d9ac2364226a11268fcdd1224f">More...</a><br /></td></tr>
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<tr class="memitem:ae5a906a6cdb63784d2f7f7453b2052f7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae5a906a6cdb63784d2f7f7453b2052f7">endCapStyle</a></td></tr>
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<tr class="memdesc:ae5a906a6cdb63784d2f7f7453b2052f7"><td class="mdescLeft"> </td><td class="mdescRight">Defaults to CAP_ROUND;. <a href="#ae5a906a6cdb63784d2f7f7453b2052f7">More...</a><br /></td></tr>
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<tr class="separator:ae5a906a6cdb63784d2f7f7453b2052f7"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6812973372f9efb911bcfd76b3997c0a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">JoinStyle</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a6812973372f9efb911bcfd76b3997c0a">joinStyle</a></td></tr>
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<tr class="memdesc:a6812973372f9efb911bcfd76b3997c0a"><td class="mdescLeft"> </td><td class="mdescRight">Defaults to JOIN_ROUND;. <a href="#a6812973372f9efb911bcfd76b3997c0a">More...</a><br /></td></tr>
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<tr class="separator:a6812973372f9efb911bcfd76b3997c0a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0ee5ab7164407bfa06efce132d371ec0"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a0ee5ab7164407bfa06efce132d371ec0">mitreLimit</a></td></tr>
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<tr class="memdesc:a0ee5ab7164407bfa06efce132d371ec0"><td class="mdescLeft"> </td><td class="mdescRight">Defaults to DEFAULT_MITRE_LIMIT;. <a href="#a0ee5ab7164407bfa06efce132d371ec0">More...</a><br /></td></tr>
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<tr class="separator:a0ee5ab7164407bfa06efce132d371ec0"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a38fe50ad39425198e3c97128a2b615c4"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a38fe50ad39425198e3c97128a2b615c4">_isSingleSided</a></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>Contains the parameters which describe how a buffer should be constructed. </p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00057">57</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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</div><h2 class="groupheader">Member Enumeration Documentation</h2>
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<td class="memname">enum <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">geos::operation::buffer::BufferParameters::EndCapStyle</a></td>
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<p>End cap styles. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a class="anchor" id="a4712bec3a5a2bb5c28ab43b3fe327950a2115b456f33264168ae298f31cd10e84"></a>CAP_ROUND </td><td class="fielddoc">
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<p>Specifies a round line buffer end cap style. </p>
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<tr><td class="fieldname"><a class="anchor" id="a4712bec3a5a2bb5c28ab43b3fe327950aedd88ac809cfcc7b2cc5e0300d6056a0"></a>CAP_FLAT </td><td class="fielddoc">
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<p>Specifies a flat line buffer end cap style. </p>
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<tr><td class="fieldname"><a class="anchor" id="a4712bec3a5a2bb5c28ab43b3fe327950a1915b38145310e6c86cb0dc5231dd545"></a>CAP_SQUARE </td><td class="fielddoc">
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<p>Specifies a square line buffer end cap style. </p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00062">62</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname">enum <a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">geos::operation::buffer::BufferParameters::JoinStyle</a></td>
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<p>Join styles. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a class="anchor" id="ae40a3908d24a3ac91212b35f8464b9c7a9ded695910037ff23c849ddc68e73023"></a>JOIN_ROUND </td><td class="fielddoc">
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<p>Specifies a round join style. </p>
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<tr><td class="fieldname"><a class="anchor" id="ae40a3908d24a3ac91212b35f8464b9c7a4f2854d8ec73a4843a22a51b8a2ecc09"></a>JOIN_MITRE </td><td class="fielddoc">
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<p>Specifies a mitre join style. </p>
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<tr><td class="fieldname"><a class="anchor" id="ae40a3908d24a3ac91212b35f8464b9c7ac2a1117219d301712e949c2257f7b3d1"></a>JOIN_BEVEL </td><td class="fielddoc">
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<p>Specifies a bevel join style. </p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00075">75</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<td class="memname">geos::operation::buffer::BufferParameters::BufferParameters </td>
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<td>(</td>
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<p>Creates a default set of parameters. </p>
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<td class="memname">geos::operation::buffer::BufferParameters::BufferParameters </td>
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<td>(</td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>quadrantSegments</em></td><td>)</td>
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<p>Creates a set of parameters with the given quadrantSegments value.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<td class="paramtype">int </td>
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<td class="paramtype"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> </td>
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<p>Creates a set of parameters with the given quadrantSegments and endCapStyle values. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">quadrantSegments</td><td>the number of quadrant segments to use </td></tr>
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<td class="paramtype"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> </td>
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<td class="paramname"><em>endCapStyle</em>, </td>
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<td class="paramtype"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">JoinStyle</a> </td>
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<p>Creates a set of parameters with the given parameter values. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">quadrantSegments</td><td>the number of quadrant segments to use </td></tr>
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<tr><td class="paramname">endCapStyle</td><td>the end cap style to use </td></tr>
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<tr><td class="paramname">joinStyle</td><td>the join style to use </td></tr>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">static double geos::operation::buffer::BufferParameters::bufferDistanceError </td>
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<td>(</td>
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<td class="paramtype">int </td>
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<p>Computes the maximum distance error due to a given level of approximation to a true arc. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">quadSegs</td><td>the number of segments used to approximate a quarter-circle </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>the error of approximation </dd></dl>
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<td class="memname"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> geos::operation::buffer::BufferParameters::getEndCapStyle </td>
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<p>Gets the end cap style.</p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00187">187</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">JoinStyle</a> geos::operation::buffer::BufferParameters::getJoinStyle </td>
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<p>Gets the join style.</p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00212">212</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<p>Gets the mitre ratio limit.</p>
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<dl class="section return"><dt>Returns</dt><dd>the limit value </dd></dl>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00237">237</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<p>Gets the number of quadrant segments which will be used</p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00138">138</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<p>Tests whether the buffer is to be generated on a single side only.</p>
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<dl class="section return"><dt>Returns</dt><dd>true if the generated buffer is to be single-sided </dd></dl>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00290">290</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname">void geos::operation::buffer::BufferParameters::setEndCapStyle </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> </td>
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<td class="paramname"><em>style</em></td><td>)</td>
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<p>Specifies the end cap style of the generated buffer.</p>
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<p>The styles supported are CAP_ROUND, CAP_BUTT, and CAP_SQUARE.</p>
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<p>The default is CAP_ROUND.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">style</td><td>the end cap style to specify </td></tr>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00202">202</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname">void geos::operation::buffer::BufferParameters::setJoinStyle </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">JoinStyle</a> </td>
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<td class="paramname"><em>style</em></td><td>)</td>
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<p>Sets the join style for outside (reflex) corners between line segments. </p>
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<p>Allowable values are JOIN_ROUND (which is the default), JOIN_MITRE and JOIN_BEVEL.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">style</td><td>the code for the join style </td></tr>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00227">227</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname">void geos::operation::buffer::BufferParameters::setMitreLimit </td>
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<td>(</td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>limit</em></td><td>)</td>
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<p>Sets the limit on the mitre ratio used for very sharp corners.</p>
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<p>The mitre ratio is the ratio of the distance from the corner to the end of the mitred offset corner. When two line segments meet at a sharp angle, a miter join will extend far beyond the original geometry. (and in the extreme case will be infinitely far.) To prevent unreasonable geometry, the mitre limit allows controlling the maximum length of the join corner. Corners with a ratio which exceed the limit will be beveled.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">limit</td><td>the mitre ratio limit </td></tr>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00256">256</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname">void geos::operation::buffer::BufferParameters::setQuadrantSegments </td>
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<td>(</td>
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<p>Sets the number of line segments used to approximate an angle fillet. </p>
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<ul>
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<li>If <code>quadSegs</code> >= 1, joins are round, and <code>quadSegs</code> indicates the number of segments to use to approximate a quarter-circle.</li>
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<li>If <code>quadSegs</code> = 0, joins are bevelled (flat)</li>
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<li>If <code>quadSegs</code> < 0, joins are mitred, and the value of qs indicates the mitre ration limit as <pre>
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mitreLimit = |<code>quadSegs</code>|
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<p>For round joins, <code>quadSegs</code> determines the maximum error in the approximation to the true buffer curve.</p>
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<p>The default value of 8 gives less than 2% max error in the buffer distance.</p>
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<p>For a max error of < 1%, use QS = 12. For a max error of < 0.1%, use QS = 18. The error is always less than the buffer distance (in other words, the computed buffer curve is always inside the true curve).</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">quadSegs</td><td>the number of segments in a fillet for a quadrant </td></tr>
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<td class="memname">void geos::operation::buffer::BufferParameters::setSingleSided </td>
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<p>Sets whether the computed buffer should be single-sided. A single-sided buffer is constructed on only one side of each input line.</p>
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<p>The side used is determined by the sign of the buffer distance:</p><ul>
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<li>a positive distance indicates the left-hand side</li>
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<li>a negative distance indicates the right-hand side</li>
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</ul>
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<p>The single-sided buffer of point geometries is the same as the regular buffer.</p>
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<p>The End Cap Style for single-sided buffers is always ignored, and forced to the equivalent of <code>CAP_FLAT</code>.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">p_isSingleSided</td><td>true if a single-sided buffer should be constructed </td></tr>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00279">279</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<h2 class="groupheader">Member Data Documentation</h2>
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<td class="memname">bool geos::operation::buffer::BufferParameters::_isSingleSided</td>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00310">310</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname">const double geos::operation::buffer::BufferParameters::DEFAULT_MITRE_LIMIT</td>
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<p>The default mitre limit</p>
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<p>Allows fairly pointy mitres. </p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00101">101</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname">const int geos::operation::buffer::BufferParameters::DEFAULT_QUADRANT_SEGMENTS = 8</td>
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<p>The default number of facets into which to divide a fillet of 90 degrees. </p>
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<p>A value of 8 gives less than 2% max error in the buffer distance. For a max error of < 1%, use QS = 12. For a max error of < 0.1%, use QS = 18. </p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00095">95</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#a4712bec3a5a2bb5c28ab43b3fe327950">EndCapStyle</a> geos::operation::buffer::BufferParameters::endCapStyle</td>
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<p>Defaults to CAP_ROUND;. </p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00302">302</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname"><a class="el" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html#ae40a3908d24a3ac91212b35f8464b9c7">JoinStyle</a> geos::operation::buffer::BufferParameters::joinStyle</td>
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<p>Defaults to JOIN_ROUND;. </p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00305">305</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname">double geos::operation::buffer::BufferParameters::mitreLimit</td>
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<p>Defaults to DEFAULT_MITRE_LIMIT;. </p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00308">308</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<td class="memname">int geos::operation::buffer::BufferParameters::quadrantSegments</td>
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<p>Defaults to DEFAULT_QUADRANT_SEGMENTS;. </p>
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<p>Definition at line <a class="el" href="BufferParameters_8h_source.html#l00299">299</a> of file <a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
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<li><a class="el" href="BufferParameters_8h_source.html">BufferParameters.h</a></li>
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