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| author | jaseg <git@jaseg.de> | 2021-01-24 18:44:56 +0100 |
|---|---|---|
| committer | jaseg <git@jaseg.de> | 2021-01-24 18:44:56 +0100 |
| commit | f7b4cc602b9a646fbc66f3f17d6bb9c20efc3ead (patch) | |
| tree | d7b110b65e93b87fc65472559ac74e7eb961bc7c /upstream/clipper-6.4.2/Documentation/Docs/Units/ClipperLib/Classes/ClipperBase/Methods/AddPath.htm | |
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diff --git a/upstream/clipper-6.4.2/Documentation/Docs/Units/ClipperLib/Classes/ClipperBase/Methods/AddPath.htm b/upstream/clipper-6.4.2/Documentation/Docs/Units/ClipperLib/Classes/ClipperBase/Methods/AddPath.htm new file mode 100644 index 0000000..de8c944 --- /dev/null +++ b/upstream/clipper-6.4.2/Documentation/Docs/Units/ClipperLib/Classes/ClipperBase/Methods/AddPath.htm @@ -0,0 +1,95 @@ +<html>
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+ <title>AddPath</title>
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+ <h1>ClipperBase.AddPath</h1>
+
+
+ <p class="Decl"><span class="Comment">Del.»</span> <b>function</b> AddPath(<b>const</b> path: <a href="../../../Types/Path.htm">TPath</a>; polyType: <a href="../../../Types/PolyType.htm">TPolyType</a>; Closed: Boolean): Boolean;</p>
+
+ <p class="Decl2"><span class="Comment">C++ »</span> <b>bool</b> AddPath(<b>const</b> <a href="../../../Types/Path.htm">Path</a> &pg, <a href="../../../Types/PolyType.htm">PolyType</a> polyType, <b>bool</b> closed);</p>
+
+ <p class="Decl3"><span class="Comment">C# »</span> <b>public virtual bool</b> AddPath(<a href="../../../Types/Path.htm">Path</a> pg, <a href="../../../Types/PolyType.htm">PolyType</a> polyType, <b>bool</b> closed);</p>
+<br>
+
+
+ <p class="Body"> <img src="../../../../../../Images/line_clipping.png" alt="" border="0" align="right"> Any number of subject and clip paths can be added to a clipping task, either individually via the AddPath() method, or as groups via the AddPaths() method, or even using both methods.<br><br> 'Subject' paths may be either <em>open</em> (lines) or <em>closed</em> (polygons) or even a mixture of both, but <span class="maroon"><b>'clipping' paths must always be <em>closed</em></b></span>. Clipper allows polygons to clip both lines and other polygons, but doesn't allow lines to clip either lines or polygons.<br><br> With closed paths, <a href="../../../Functions/Orientation.htm">orientation</a> should conform with the <a href="../../../Types/PolyFillType.htm">filling rule</a> that will be passed via Clippper's <a href="../../Clipper/Methods/Execute.htm">Execute</a> method.<br><br> </p>
+
+
+
+ <p class="Body"><b>Path Coordinate range</b>:<br> Path coordinates must be between ± 0x3FFFFFFFFFFFFFFF (± <b>4.6e+18</b>), otherwise a range error will be thrown when attempting to add the path to the Clipper object. If coordinates can be kept between ± 0x3FFFFFFF (± <b>1.0e+9</b>), a modest increase in performance (approx. 15-20%) over the larger range can be achieved by avoiding large integer math. If the preprocessor directive <a href="../../../PreProcessor/Defines.htm"><b>use_int32</b></a> is defined (allowing a further increase in performance of 20-30%), then the maximum range is restricted to ± 32,767. <br><br></p>
+
+
+ <p class="Body"> <b>Return Value:</b><br> The function will return false if the path is invalid for clipping. A path is invalid for clipping when:
+ <ul>
+
+ <li>it has less than 2 vertices</li>
+
+ <li>it has 2 vertices but is not an open path</li>
+
+ <li>the vertices are all co-linear and it is not an open path</li>
+
+ </ul> </p>
+
+<br>
+
+
+
+
+ <h2 id="Auto-SeeAlso">See Also</h2>
+ <p class="Body"><a href="../../../../../Overview/Example.htm">Example</a>, <a href="../../Clipper/Methods/Execute.htm">Clipper.Execute</a>, <a href="AddPaths.htm">AddPaths</a>, <a href="../../../Functions/Orientation.htm">Orientation</a>, <a href="../../../PreProcessor/Defines.htm">Defines</a>, <a href="../../../Types/Path.htm">Path</a>, <a href="../../../Types/PolyFillType.htm">PolyFillType</a>, <a href="../../../Types/PolyType.htm">PolyType</a></p>
+
+ <p class="Copyright" id="auto"> <br><br> Copyright ©2010-2014 Angus Johnson - Clipper 6.2.1 - Help file built on 1-November-2014 <br><br> </p>
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