def test_triangle_area():
a = geom.Point2D( [0.0, 0.0] )
b = geom.Point2D( [1.0, 0.0] )
c = geom.Point2D( [1.0, 1.0] )
triangle2D_1 = geom.Triangle2D( a, b, c )
if geom.triangle_area2D( triangle2D_1 ) != 0.5:
raise ValueError( "[Test] Wrong result for triangle_area with query triangle triangle2D_1" )
triangle2D_2 = geom.Triangle2D( a, b, a )
if geom.triangle_area2D( triangle2D_2 ) != 0.0:
raise ValueError( "[Test] Wrong result for triangle_area with query triangle triangle2D_2" )
def test_point_triangle_distance():
a = geom.Point2D([0.0, 0.0])
b = geom.Point2D([1.0, 0.0])
c = geom.Point2D([1.0, 1.0])
triangle2D = geom.Triangle2D(a, b, c)
distance, closest_point = geom.point_triangle_distance2D(a, triangle2D)
if distance != 0 or closest_point != a:
raise ValueError(
"[Test] Wrong result for point_triangle_distance2D with query point a"
)
distance, closest_point = geom.point_triangle_distance2D(b, triangle2D)
if distance != 0 or closest_point != b:
raise ValueError(
"[Test] Wrong result for point_triangle_distance2D with query point b"
)
q1 = geom.Point2D([0.5, 0.5])
distance, closest_point = geom.point_triangle_distance2D(q1, triangle2D)
if distance != 0 or closest_point != q1:
raise ValueError(
"[Test] Wrong result for point_triangle_distance2D with query point q1"
)
q2 = geom.Point2D([0.0, 1.0])
distance, closest_point = geom.point_triangle_distance2D(q2, triangle2D)
result_q2 = geom.Point2D([0.5, 0.5])
if distance != math.sqrt(2) / 2. or closest_point != result_q2:
raise ValueError(
"[Test] Wrong result for point_triangle_distance2D with query point q2"
)
q3 = geom.Point2D([2.0, 1.0])
distance, closest_point = geom.point_triangle_distance2D(q3, triangle2D)
if distance != 1 or closest_point != c:
raise ValueError(
"[Test] Wrong result for point_triangle_distance2D with query point q3"
)
q4 = geom.Point2D([0.5, 0.5])
distance, closest_point = geom.point_triangle_distance2D(q4, triangle2D)
if distance != 0 or closest_point != q4:
raise ValueError(
"[Test] Wrong result for point_triangle_distance2D with query point q4"
)
def test_triangle_barycentric_coordinates():
a = geom.Point2D([0.0, 0.0])
b = geom.Point2D([1.0, 0.0])
c = geom.Point2D([1.0, 1.0])
triangle2D = geom.Triangle2D(a, b, c)
if not check_triangle_bary_coords(
geom.triangle_barycentric_coordinates2D(a, triangle2D), [1, 0, 0]):
raise ValueError(
"[Test] Wrong result for triangle_barycentric_coordinates with query point a"
)
if not check_triangle_bary_coords(
geom.triangle_barycentric_coordinates2D(b, triangle2D), [0, 1, 0]):
raise ValueError(
"[Test] Wrong result for triangle_barycentric_coordinates with query point b"
)
if not check_triangle_bary_coords(
geom.triangle_barycentric_coordinates2D(c, triangle2D), [0, 0, 1]):
raise ValueError(
"[Test] Wrong result for triangle_barycentric_coordinates with query point c"
)
q1 = geom.Point2D([0.25, 0.0])
if not check_triangle_bary_coords(
geom.triangle_barycentric_coordinates2D(q1, triangle2D),
[0.75, 0.25, 0]):
raise ValueError(
"[Test] Wrong result for triangle_barycentric_coordinates with query point q1"
)
q2 = geom.Point2D([0.5, 0.25])
if not check_triangle_bary_coords(
geom.triangle_barycentric_coordinates2D(q2, triangle2D),
[0.5, 0.25, 0.25]):
raise ValueError(
"[Test] Wrong result for triangle_barycentric_coordinates with query point q2"
)
q3 = geom.Point2D([0.0, 1.0])
if not check_triangle_bary_coords(
geom.triangle_barycentric_coordinates2D(q3, triangle2D),
[1, -1, 1]):
raise ValueError(
"[Test] Wrong result for triangle_barycentric_coordinates with query point q3"
)