def generate_surface():
lower_left = point(64, 64, 1, 1,)
upper_left = point(127,256, 1, 1)
lower_right = point(256, 127, 1, 1)
upper_right = point(496, 496, 1, 1)
def surface(u, v):
low = (1 - u) * lower_left + u * lower_right
high = (1 - u) * upper_left + u * upper_right
return (1 - v) * low + v * high
return surface
def test_micropolygon():
m = Micropolygon(
point(0, 0),
point(1, 0),
point(1, 1),
point(2, 1),
)
tests = [
[ (.5 , .5) , np.array([ 1, .5 , 1, 1 ]), ],
[ (.25, .75), np.array([ 1, .75, 1, 1 ]), ],
[ (0. , 0.) , np.array([ 0, 0 , 1, 1 ]), ],
[ (1. , 0.) , np.array([ 1, 0 , 1, 1 ]), ],
[ (0. , 1.) , np.array([ 1, 1 , 1, 1 ]), ],
[ (1. , 1.) , np.array([ 2, 1 , 1, 1 ]), ],
]
for input, expected in tests:
actual = m(*input)
np.testing.assert_array_equal(actual, expected)
def generate_surface():
lower_left = point(0, 0, 1, 1,)
# up = 128 * np.array([0, 1, 0, 0], dtype=np.float32)
# right = 128 * np.array([1, 0, 0, 0], dtype=np.float32)
# up = np.array([256, 512, 0, 0], dtype=np.float32)
# right = np.array([256, 0, 0, 0], dtype=np.float32)
up = np.array([256, 512, 0, 0], dtype=np.float32)
right = np.array([256, 0, 0, 0], dtype=np.float32)
def surface(u, v):
return lower_left + u * right + v * up
return surface
def point_from_polar(u, v):
return point(
center[0] + radius * u * cos(v * tau),
center[1] + radius * u * sin(v * tau),
1, 1
)
def surface(u, v):
return point(
center[0] + radius * u * cos(v * tau),
center[1] + radius * u * sin(v * tau),
1, 1
)
def generate_mesh():
mesh = MicropolygonMesh((1, 1))
half = 512 / 2
center = point(half, half, 1, 1)
right = point((1/2) * half, (1/6) * half, 0., 0)
up = point(0, 3/4 * half, 0, 0)
points = [
[ point(5, 10, 1, 1), point(20, 20, 1, 1) ],
[ point(0, 0, 1, 1), point(10, 0, 1, 1) ],
]
points = [
[ point(80, 160, 1, 1), point(320, 320, 1, 1) ],
[ point(0, 0, 1, 1), point(160, 0, 1, 1) ],
]
points = [
[ center + up - right, center + (up + right) ],
[ center - (up + right), center - up + 1.5 * right ],
]
colors = [
[ point(1, 0, 0, 1), point(1, 0, 1, 1) ],
[ point(0, 0, 0, 1), point(0, 0, 1, 1) ]
]
mesh.buffer[:,:]['position'] = points
mesh.buffer[:,:]['color'] = colors
return mesh
