mPolyhedronTest.cpp

Engine/source/math/test/mPolyhedronTest.cpp
Detailed Description

 1
 2//-----------------------------------------------------------------------------
 3// Copyright (c) 2014 GarageGames, LLC
 4//
 5// Permission is hereby granted, free of charge, to any person obtaining a copy
 6// of this software and associated documentation files (the "Software"), to
 7// deal in the Software without restriction, including without limitation the
 8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 9// sell copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in
13// all copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21// IN THE SOFTWARE.
22//-----------------------------------------------------------------------------
23
24#ifdef TORQUE_TESTS_ENABLED
25#include "testing/unitTesting.h"
26#include "math/mPolyhedron.h"
27
28FIXTURE(Polyhedron)
29{
30protected:
31   Vector<PlaneF> planes;
32
33   virtual void SetUp()
34   {
35      // Build planes for a unit cube centered at the origin.
36      // Note that the normals must be facing inwards.
37      planes.push_back(PlaneF(Point3F(-0.5f,  0.f,   0.f ), Point3F( 1.f,  0.f,  0.f)));
38      planes.push_back(PlaneF(Point3F( 0.5f,  0.f,   0.f ), Point3F(-1.f,  0.f,  0.f)));
39      planes.push_back(PlaneF(Point3F( 0.f,  -0.5f,  0.f ), Point3F( 0.f,  1.f,  0.f)));
40      planes.push_back(PlaneF(Point3F( 0.f,   0.5f,  0.f ), Point3F( 0.f, -1.f,  0.f)));
41      planes.push_back(PlaneF(Point3F( 0.f,   0.f,  -0.5f), Point3F( 0.f,  0.f,  1.f)));
42      planes.push_back(PlaneF(Point3F( 0.f,   0.f,   0.5f), Point3F( 0.f,  0.f, -1.f)));
43   }
44};
45
46TEST_FIX(Polyhedron, BuildFromPlanes)
47{
48   // Turn planes into a polyhedron.
49   Polyhedron p1;
50   p1.buildFromPlanes(PlaneSetF(planes.address(), planes.size()));
51
52   // Check if we got a cube back.
53   EXPECT_EQ(p1.getNumPoints(), 8);
54   EXPECT_EQ(p1.getNumPlanes(), 6);
55   EXPECT_EQ(p1.getNumEdges(), 12);
56
57   // Add extra plane that doesn't contribute a new edge.
58   Vector<PlaneF> planes2 = planes;
59   planes2.push_back( PlaneF( Point3F( 0.5f, 0.5f, 0.5f ), Point3F( -1.f, -1.f, -1.f ) ) );
60
61   // Turn them into another polyhedron.
62   Polyhedron p2;
63   p2.buildFromPlanes(PlaneSetF(planes2.address(), planes2.size()));
64
65   // Check if we got a cube back.
66   EXPECT_EQ(p2.getNumPoints(), 8);
67   EXPECT_EQ(p2.getNumPlanes(), 6);
68   EXPECT_EQ(p2.getNumEdges(), 12);
69}
70
71#endif
72