1 #include <cxxtest/TestSuite.h>
3 #include <cmath>
4 #include <libnr/nr-matrix.h>
5 #include <libnr/nr-matrix-ops.h>
6 #include <libnr/nr-matrix-fns.h> /* identity, matrix_equalp */
7 #include <libnr/nr-point-fns.h>
8 #include <libnr/nr-rotate.h>
9 #include <libnr/nr-rotate-fns.h>
10 #include <libnr/nr-rotate-ops.h>
13 class NrRotateTest : public CxxTest::TestSuite
14 {
15 public:
17 NrRotateTest() :
18 m_id( NR::identity() ),
19 r_id( 0.0 ),
20 rot234( .234 ),
21 b( -2.0, 3.0 ),
22 rot180( NR::Point(-1.0, 0.0) )
23 {
24 }
25 virtual ~NrRotateTest() {}
27 // createSuite and destroySuite get us per-suite setup and teardown
28 // without us having to worry about static initialization order, etc.
29 static NrRotateTest *createSuite() { return new NrRotateTest(); }
30 static void destroySuite( NrRotateTest *suite ) { delete suite; }
32 NR::Matrix const m_id;
33 NR::rotate const r_id;
34 NR::rotate const rot234;
35 NR::Point const b;
36 NR::rotate const rot180;
41 void testCtorsCompares(void)
42 {
43 TS_ASSERT_EQUALS( r_id, r_id );
44 TS_ASSERT_EQUALS( rot234, rot234 );
45 TS_ASSERT_DIFFERS( rot234, r_id );
46 TS_ASSERT_EQUALS( r_id, NR::rotate(NR::Point(1.0, 0.0)) );
47 TS_ASSERT_EQUALS( NR::Matrix(r_id), m_id );
48 TS_ASSERT( NR::Matrix(r_id).test_identity() );
50 TS_ASSERT(rotate_equalp(rot234, NR::rotate(NR::Point(cos(.234), sin(.234))), 1e-12));
51 }
53 void testAssignmentOp(void)
54 {
55 NR::rotate rot234_eq(r_id);
56 rot234_eq = rot234;
57 TS_ASSERT_EQUALS( rot234, rot234_eq );
58 TS_ASSERT_DIFFERS( rot234_eq, r_id );
59 }
61 void testInverse(void)
62 {
63 TS_ASSERT_EQUALS( r_id.inverse(), r_id );
64 TS_ASSERT_EQUALS( rot234.inverse(), NR::rotate(-.234) );
65 }
67 void testOpStarPointRotate(void)
68 {
69 TS_ASSERT_EQUALS( b * r_id, b );
70 TS_ASSERT_EQUALS( b * rot180, -b );
71 TS_ASSERT_EQUALS( b * rot234, b * NR::Matrix(rot234) );
72 TS_ASSERT(point_equalp(b * NR::rotate(M_PI / 2),
73 NR::rot90(b),
74 1e-14));
75 TS_ASSERT_EQUALS( b * rotate_degrees(90.), NR::rot90(b) );
76 }
78 void testOpStarRotateRotate(void)
79 {
80 TS_ASSERT_EQUALS( r_id * r_id, r_id );
81 TS_ASSERT_EQUALS( rot180 * rot180, r_id );
82 TS_ASSERT_EQUALS( rot234 * r_id, rot234 );
83 TS_ASSERT_EQUALS( r_id * rot234, rot234 );
84 TS_ASSERT( rotate_equalp(rot234 * rot234.inverse(), r_id, 1e-14) );
85 TS_ASSERT( rotate_equalp(rot234.inverse() * rot234, r_id, 1e-14) );
86 TS_ASSERT( rotate_equalp(( NR::rotate(0.25) * NR::rotate(.5) ),
87 NR::rotate(.75),
88 1e-10) );
89 }
91 void testOpDivRotateRotate(void)
92 {
93 TS_ASSERT_EQUALS( rot234 / r_id, rot234 );
94 TS_ASSERT_EQUALS( rot234 / rot180, rot234 * rot180 );
95 TS_ASSERT( rotate_equalp(rot234 / rot234, r_id, 1e-14) );
96 TS_ASSERT( rotate_equalp(r_id / rot234, rot234.inverse(), 1e-14) );
97 }
99 };
101 /*
102 Local Variables:
103 mode:c++
104 c-file-style:"stroustrup"
105 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
106 indent-tabs-mode:nil
107 fill-column:99
108 End:
109 */
110 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :