def main():
ti.deactivate_all_snodes()
activate()
gui = ti.GUI('bitmasked', (n, n))
for frame in range(10000):
color = math.sin(frame * 0.05) * 0.5 + 0.5
paint_active_pixels(color)
#paint_all_pixels(color) # try this and compare the difference!
gui.set_image(x)
gui.show()
def main(self):
gui = ti.GUI('Marching cube')
while gui.running and not gui.get_event(gui.ESCAPE):
if self.use_sparse:
ti.deactivate_all_snodes()
else:
self.m.fill(0)
self.touch(*gui.get_cursor_pos())
ret_len = self.march()
ret = self.r.to_numpy()[:ret_len] / self.N
if self.dim == 2:
self.compute_grad()
gui.set_image(ti.tools.imresize(self.g, *gui.res) * 0.5 + 0.5)
gui.lines(ret[:, 0], ret[:, 1], color=0xff66cc, radius=1.5)
else:
gui.triangles(ret[:, 0, 0:2],
ret[:, 1, 0:2],
ret[:, 2, 0:2],
color=0xffcc66)
gui.lines(ret[:, 0, 0:2],
ret[:, 1, 0:2],
color=0xff66cc,
radius=0.5)
gui.lines(ret[:, 1, 0:2],
ret[:, 2, 0:2],
color=0xff66cc,
radius=0.5)
gui.lines(ret[:, 2, 0:2],
ret[:, 0, 0:2],
color=0xff66cc,
radius=0.5)
gui.text(f'Press space to save mesh to PLY ({len(ret)} faces)',
(0, 1))
if gui.is_pressed(gui.SPACE):
num = ret.shape[0]
writer = ti.tools.PLYWriter(num_vertices=num * 3,
num_faces=num)
vertices = ret.reshape(num * 3, 3) * 2 - 1
writer.add_vertex_pos(vertices[:, 0], vertices[:, 1],
vertices[:, 2])
indices = np.arange(0, num * 3)
writer.add_faces(indices)
writer.export('mciso_output.ply')
print('Mesh saved to mciso_output.ply')
gui.show()
# output: nothing
for i, j in block1:
print('Active block1: [{}, {}]'.format(i, j))
# output: Active block1: [0, 1]
print(ti.rescale_index(x, block1, ti.Vector([9, 17])))
# output = [2, 4]
# Note: ti.Vector is optional in ti.rescale_index.
print(ti.rescale_index(x, block1, [9, 17]))
# output = [2, 4]
ti.activate(block2, [1, 2])
sparse_api_demo()
@ti.kernel
def check_activity(snode: ti.template(), i: ti.i32, j: ti.i32):
print(ti.is_active(snode, [i, j]))
check_activity(block2, 1, 2) # output = 1
block2.deactivate_all()
check_activity(block2, 1, 2) # output = 0
check_activity(block1, 0, 1) # output = 1
ti.deactivate_all_snodes()
check_activity(block1, 0, 1) # output = 0
def deactivate_all():
warning(
"""'ti.root.deactivate_all()' would deactivate all finalized snodes."""
)
ti.deactivate_all_snodes()