NLDClient-yudde/ProjectNLD/Assets/ThirdParty/TerrainGridSystem/Scripts/PolyTri/P2T.cs

81 lines
3.1 KiB
C#
Raw Normal View History

2023-08-22 19:08:45 +08:00
/* Poly2Tri
* Copyright (c) 2009-2010, Poly2Tri Contributors
* http://code.google.com/p/poly2tri/
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Poly2Tri nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
namespace TGS.Poly2Tri {
public static class P2T {
private static TriangulationAlgorithm _defaultAlgorithm = TriangulationAlgorithm.DTSweep;
public static void Triangulate(PolygonSet ps) {
foreach (Polygon p in ps.Polygons) {
Triangulate(p);
}
}
public static void Triangulate(Polygon p) {
Triangulate(_defaultAlgorithm, p);
}
public static void Triangulate(ConstrainedPointSet cps) {
Triangulate(_defaultAlgorithm, cps);
}
public static void Triangulate(PointSet ps) {
Triangulate(_defaultAlgorithm, ps);
}
public static TriangulationContext CreateContext(TriangulationAlgorithm algorithm) {
switch (algorithm) {
case TriangulationAlgorithm.DTSweep:
default:
return new DTSweepContext();
}
}
public static void Triangulate(TriangulationAlgorithm algorithm, ITriangulatable t) {
TriangulationContext tcx;
tcx = CreateContext(algorithm);
tcx.PrepareTriangulation(t);
Triangulate(tcx);
}
public static void Triangulate(TriangulationContext tcx) {
switch (tcx.Algorithm) {
case TriangulationAlgorithm.DTSweep:
default:
DTSweep.Triangulate((DTSweepContext)tcx);
break;
}
}
}
}