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me-main #1

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Nate Rupsis merged 123 commits from me-main into main 2023-02-13 18:39:11 +01:00
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1 changed files with 85 additions and 41 deletions
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source/blender/blenlib/tests/BLI_polyfill_2d_test.cc
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@ -33,6 +33,12 @@ static void polyfill_to_obj(const char *id,
const uint tris[][3],
const uint tris_num);
using ePolyFill2DTestFlag = enum ePolyFill2DTestFlag {
POLYFILL2D_TEST_IS_DEGENERATE = (1 << 0),
POLYFILL2D_TEST_NO_ZERO_AREA_TRIS = (1 << 1),
POLYFILL2D_TEST_NOP = 0,
};
/* -------------------------------------------------------------------- */
/* test utility functions */
@ -159,13 +165,31 @@ static void test_polyfill_area(const float poly[][2],
EXPECT_NEAR(area_total, area_total_tris, eps);
}
/**
* Check that none of the tessellated triangles are zero area.
*/
static void test_polyfill_area_tri_nonzero(const float poly[][2],
const uint /*poly_num*/,
const uint tris[][3],
const uint tris_num)
{
uint i;
uint total = 0;
for (i = 0; i < tris_num; i++) {
if (area_tri_v2(poly[tris[i][0]], poly[tris[i][1]], poly[tris[i][2]]) < 1e-6f) {
total += 1;
}
}
EXPECT_EQ(total, 0);
}
/* -------------------------------------------------------------------- */
/* Macro and helpers to manage checking */
/**
* Main template for polyfill testing.
*/
static void test_polyfill_template_check(const char *id,
bool is_degenerate,
const ePolyFill2DTestFlag test_flag,
const float poly[][2],
const uint poly_num,
const uint tris[][3],
@ -173,16 +197,22 @@ static void test_polyfill_template_check(const char *id,
{
test_polyfill_simple(poly, poly_num, tris, tris_num);
test_polyfill_topology(poly, poly_num, tris, tris_num);
if (!is_degenerate) {
if (!(test_flag & POLYFILL2D_TEST_IS_DEGENERATE)) {
test_polyfill_winding(poly, poly_num, tris, tris_num);
test_polyfill_area(poly, poly_num, tris, tris_num);
/* Only check when non-degenerate, because the number of zero area triangles
* are undefined for degenerate polygons as there is no correct solution. */
if (test_flag & POLYFILL2D_TEST_NO_ZERO_AREA_TRIS) {
test_polyfill_area_tri_nonzero(poly, poly_num, tris, tris_num);
}
}
polyfill_to_obj(id, poly, poly_num, tris, tris_num);
}
static void test_polyfill_template(const char *id,
bool is_degenerate,
const ePolyFill2DTestFlag test_flag,
const float poly[][2],
const uint poly_num,
uint tris[][3],
@ -192,7 +222,7 @@ static void test_polyfill_template(const char *id,
BLI_polyfill_calc(poly, poly_num, 0, tris);
/* check all went well */
test_polyfill_template_check(id, is_degenerate, poly, poly_num, tris, tris_num);
test_polyfill_template_check(id, test_flag, poly, poly_num, tris, tris_num);
#ifdef USE_BEAUTIFY
/* check beautify gives good results too */
@ -202,7 +232,7 @@ static void test_polyfill_template(const char *id,
BLI_polyfill_beautify(poly, poly_num, tris, pf_arena, pf_heap);
test_polyfill_template_check(id, is_degenerate, poly, poly_num, tris, tris_num);
test_polyfill_template_check(id, test_flag, poly, poly_num, tris, tris_num);
BLI_memarena_free(pf_arena);
BLI_heap_free(pf_heap, nullptr);
@ -211,7 +241,7 @@ static void test_polyfill_template(const char *id,
}
static void test_polyfill_template_flip_sign(const char *id,
bool is_degenerate,
const ePolyFill2DTestFlag test_flag,
const float poly[][2],
const uint poly_num,
uint tris[][3],
@ -226,7 +256,7 @@ static void test_polyfill_template_flip_sign(const char *id,
poly_copy[i][0] = poly[i][0] * sign_x;
poly_copy[i][1] = poly[i][1] * sign_y;
}
test_polyfill_template(id, is_degenerate, poly_copy, poly_num, tris, tris_num);
test_polyfill_template(id, test_flag, poly_copy, poly_num, tris, tris_num);
}
}
MEM_freeN(poly_copy);
@ -234,7 +264,7 @@ static void test_polyfill_template_flip_sign(const char *id,
#ifdef USE_COMBINATIONS_ALL
static void test_polyfill_template_main(const char *id,
bool is_degenerate,
const ePolyFill2DTestFlag test_flag,
const float poly[][2],
const uint poly_num,
uint tris[][3],
@ -256,7 +286,7 @@ static void test_polyfill_template_main(const char *id,
for (poly_cycle = 0; poly_cycle < poly_num; poly_cycle++) {
// printf("polytest %s ofs=%d, reverse=%d\n", id, poly_cycle, poly_reverse);
test_polyfill_template_flip_sign(id, is_degenerate, poly, poly_num, tris, tris_num);
test_polyfill_template_flip_sign(id, test_flag, poly, poly_num, tris, tris_num);
/* cycle */
copy_v2_v2(tmp, poly_copy[0]);
@ -269,24 +299,24 @@ static void test_polyfill_template_main(const char *id,
}
#else /* USE_COMBINATIONS_ALL */
static void test_polyfill_template_main(const char *id,
bool is_degenerate,
const ePolyFill2DTestFlag test_flag,
const float poly[][2],
const uint poly_num,
uint tris[][3],
const uint tris_num)
{
test_polyfill_template_flip_sign(id, is_degenerate, poly, poly_num, tris, tris_num);
test_polyfill_template_flip_sign(id, test_flag, poly, poly_num, tris, tris_num);
}
#endif /* USE_COMBINATIONS_ALL */
#define TEST_POLYFILL_TEMPLATE_STATIC(poly, is_degenerate) \
#define TEST_POLYFILL_TEMPLATE_STATIC(poly, test_flag) \
{ \
uint tris[POLY_TRI_COUNT(ARRAY_SIZE(poly))][3]; \
const uint poly_num = ARRAY_SIZE(poly); \
const uint tris_num = ARRAY_SIZE(tris); \
const char *id = typeid(*this).name(); \
\
test_polyfill_template_main(id, is_degenerate, poly, poly_num, tris, tris_num); \
test_polyfill_template_main(id, test_flag, poly, poly_num, tris, tris_num); \
} \
(void)0
@ -380,56 +410,56 @@ static void polyfill_to_obj(const char *id,
TEST(polyfill2d, TriangleCCW)
{
const float poly[][2] = {{0, 0}, {0, 1}, {1, 0}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* A counterclockwise square */
TEST(polyfill2d, SquareCCW)
{
const float poly[][2] = {{0, 0}, {0, 1}, {1, 1}, {1, 0}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* A clockwise square */
TEST(polyfill2d, SquareCW)
{
const float poly[][2] = {{0, 0}, {1, 0}, {1, 1}, {0, 1}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Starfleet insigna */
TEST(polyfill2d, Starfleet)
{
const float poly[][2] = {{0, 0}, {0.6f, 0.4f}, {1, 0}, {0.5f, 1}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Starfleet insigna with repeated point */
TEST(polyfill2d, StarfleetDegenerate)
{
const float poly[][2] = {{0, 0}, {0.6f, 0.4f}, {0.6f, 0.4f}, {1, 0}, {0.5f, 1}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Three collinear points */
TEST(polyfill2d, 3Colinear)
{
const float poly[][2] = {{0, 0}, {1, 0}, {2, 0}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Four collinear points */
TEST(polyfill2d, 4Colinear)
{
const float poly[][2] = {{0, 0}, {1, 0}, {2, 0}, {3, 0}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Non-consecutive collinear points */
TEST(polyfill2d, UnorderedColinear)
{
const float poly[][2] = {{0, 0}, {1, 1}, {2, 0}, {3, 1}, {4, 0}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Plus shape */
@ -449,14 +479,14 @@ TEST(polyfill2d, PlusShape)
{0, 1},
{1, 1},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Star shape */
TEST(polyfill2d, StarShape)
{
const float poly[][2] = {{4, 0}, {5, 3}, {8, 4}, {5, 5}, {4, 8}, {3, 5}, {0, 4}, {3, 3}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* U shape */
@ -464,7 +494,7 @@ TEST(polyfill2d, UShape)
{
const float poly[][2] = {
{1, 0}, {2, 0}, {3, 1}, {3, 3}, {2, 3}, {2, 1}, {1, 1}, {1, 3}, {0, 3}, {0, 1}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Spiral */
@ -488,7 +518,7 @@ TEST(polyfill2d, Spiral)
{4, 1},
{0, 1},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Test case from http://www.flipcode.com/archives/Efficient_Polygon_Triangulation.shtml */
@ -511,14 +541,14 @@ TEST(polyfill2d, TestFlipCode)
{4, 3},
{2, 6},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Self-intersection */
TEST(polyfill2d, SelfIntersect)
{
const float poly[][2] = {{0, 0}, {1, 1}, {2, -1}, {3, 1}, {4, 0}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, true);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_IS_DEGENERATE);
}
/* Self-touching */
@ -538,7 +568,7 @@ TEST(polyfill2d, SelfTouch)
{2, 4},
{0, 4},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Self-overlapping */
@ -558,7 +588,7 @@ TEST(polyfill2d, SelfOverlap)
{3, 4},
{0, 4},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, true);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_IS_DEGENERATE);
}
/* Test case from http://www.davdata.nl/math/polygons.html */
@ -570,7 +600,7 @@ TEST(polyfill2d, TestDavData)
{410, 30}, {470, 440}, {640, 410}, {630, 140}, {590, 140}, {580, 360}, {510, 370},
{510, 60}, {650, 70}, {660, 450}, {190, 480},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Issue 815, http://code.google.com/p/libgdx/issues/detail?id=815 */
@ -586,7 +616,7 @@ TEST(polyfill2d, Issue815)
{2.0f, 1.0f},
{2.0f, 0.0f},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Issue 207, comment #1, http://code.google.com/p/libgdx/issues/detail?id=207#c1 */
@ -605,7 +635,7 @@ TEST(polyfill2d, Issue207_1)
{126.70667f, 170.07617f},
{73.22717f, 199.51062f},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, true);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_IS_DEGENERATE);
}
/* Issue 207, comment #11, http://code.google.com/p/libgdx/issues/detail?id=207#c11 */
@ -625,7 +655,7 @@ TEST(polyfill2d, Issue207_11)
{1934.0381f, 485.3833f}, {1934.5234f, 484.11328f}, {1934.9502f, 482.9663f},
{1935.3125f, 481.96875f}, {1935.6045f, 481.14697f}, {1935.8203f, 480.52734f},
{1935.9541f, 480.13623f}, {1936.0f, 480.0f}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Issue 1407, http://code.google.com/p/libgdx/issues/detail?id=1407 */
@ -637,7 +667,7 @@ TEST(polyfill2d, Issue1407)
{4.8973203f, 1.9063174f},
{5.4979978f, 1.9096732f},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Issue 1407, http://code.google.com/p/libgdx/issues/detail?id=1407, */
@ -651,7 +681,7 @@ TEST(polyfill2d, Issue1407_pt)
{5.4979978f, 1.9096732f},
{4, 4},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Simplified from Blender bug #40777 */
@ -662,7 +692,7 @@ TEST(polyfill2d, IssueT40777_colinear)
{0.88, 0.4}, {0.94, 0.4}, {0.94, 0}, {1, 0}, {1, 0.4}, {0.03, 0.62}, {0.03, 0.89},
{0.59, 0.89}, {0.03, 1}, {0, 1}, {0, 0}, {0.03, 0}, {0.03, 0.37},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Blender bug #41986 */
@ -677,7 +707,7 @@ TEST(polyfill2d, IssueT41986_axis_align)
{0.68, 0.06}, {0.57, -0.36}, {-0.25, -0.37}, {0.49, -0.74}, {-0.59, -1.21},
{-0.25, -0.15}, {-0.46, -0.52}, {-1.08, -0.83}, {-1.45, -0.33}, {-1.25, -0.04}};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Blender bug #52834 */
@ -692,7 +722,7 @@ TEST(polyfill2d, IssueT52834_axis_align_co_linear)
{18, -2}, {23, -2}, {24, -2}, {29, -2}, {30, -2}, {35, -2}, {36, -2}, {40, -2},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Blender bug #67109 (version a). */
@ -711,7 +741,7 @@ TEST(polyfill2d, IssueT67109_axis_align_co_linear_a)
{2.8720665, -2.6659985},
{2.8720665, -0.15499878},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Blender bug #67109, (version b). */
@ -729,7 +759,7 @@ TEST(polyfill2d, IssueT67109_axis_align_co_linear_b)
{25.825695, -6.320076},
{24.00582, -4.5899982},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Blender bug #67109 (version c). */
@ -747,5 +777,19 @@ TEST(polyfill2d, IssueT67109_axis_align_co_linear_c)
{-60.546703, 71.07365},
{-58.37554, 78.83239},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, false);
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NOP);
}
/* Blender bug #103913 where co-linear edges create zero area tessellation
* when a valid solution exists without zero area triangles. */
TEST(polyfill2d, Issue103913_axis_align_co_linear_no_zero_area_tri)
{
const float poly[][2] = {
{-10, 0}, {-10, 2}, {-8, 2}, {-6, 2}, {-4, 2}, {-2, 2}, {-2, 4}, {-2, 6},
{-2, 8}, {-2, 10}, {0, 10}, {2, 10}, {2, 8}, {2, 6}, {2, 4}, {2, 2},
{4, 2}, {6, 2}, {8, 2}, {10, 2}, {10, 0}, {10, -2}, {8, -2}, {6, -2},
{4, -2}, {2, -2}, {2, -4}, {2, -6}, {2, -8}, {2, -10}, {0, -10}, {-2, -10},
{-2, -8}, {-2, -6}, {-2, -4}, {-2, -2}, {-4, -2}, {-6, -2}, {-8, -2}, {-10, -2},
};
TEST_POLYFILL_TEMPLATE_STATIC(poly, POLYFILL2D_TEST_NO_ZERO_AREA_TRIS);
}