def build_tri_grid(verts, nedge, bnds):
verts = list_to_c(concat(verts), float)
nedge = ct.c_int(nedge)
bnds = list_to_c(supplement(bnds, 3), int)
ret = ct.c_void_p()
ccall(cport.g2_tri_grid, verts, nedge, bnds, ct.byref(ret))
return ret
def contour_partition(obj, step, algo, a0, keepbnd,
nedges, crosses, keeppts, start, end):
""" step: [double]*n, where n dependes on algo:
algo = "const" => n = 1,
algo = "ref_points" => n = 3*k
algo = "ref_weights/lengths" => n = 2*k
nedges: None or forced number of resulting edges
"""
# options
nstep = ct.c_int(len(step))
step = list_to_c(step, "float")
a0 = ct.c_double(a0)
keepbnd = ct.c_int(keepbnd)
nedges = ct.c_int(nedges) if nedges is not None else ct.c_int(-1)
ncrosses = ct.c_int(len(crosses))
crosses = list_to_c(crosses, "void*")
nkeeppts = ct.c_int(len(keeppts))
keeppts = list_to_c(concat(keeppts), float)
start = list_to_c(start, float) if start is not None else None
end = list_to_c(end, float) if end is not None else None
# call
ret = ct.c_void_p()
ccall(cport.c2_partition, obj, algo,
nstep, step, a0, keepbnd, nedges,
ncrosses, crosses,
nkeeppts, keeppts,
start, end,
ct.byref(ret))
return ret
def stripe_grid(obj, partition, tipalgo, bnd, cb):
npartition = ct.c_int(len(partition))
partition = list_to_c(partition, float)
bnd = list_to_c(supplement(bnd, 4), int)
ret = ct.c_void_p()
ccall_cb(cport.g2_stripe_grid, cb, obj, npartition, partition, tipalgo,
bnd, ct.byref(ret))
return ret
def snap_to_contour(g, c, p1, p2, p3, p4, algo):
p1 = list_to_c(p1, float)
p2 = list_to_c(p2, float)
p3 = list_to_c(p3, float)
p4 = list_to_c(p4, float)
ret = ct.c_void_p()
ccall(cport.g2_snap_to_contour, g, c, p1, p2, p3, p4, algo, ct.byref(ret))
return ret
def spline(pts, bnds, nedges):
bnds = list_to_c(supplement(bnds, len(pts)), int)
npts = ct.c_int(len(pts))
pts = list_to_c(concat(pts), float)
nedges = ct.c_int(nedges)
ret = ct.c_void_p()
ccall(cport.c2_spline, npts, pts, nedges, bnds, ct.byref(ret))
return ret
def build_from_points(pts, force_closed, bnds):
bnds = list_to_c(supplement(bnds, len(pts)), int)
force_closed = ct.c_int(force_closed)
npts = ct.c_int(len(pts))
pts = list_to_c(concat(pts), float)
ret = ct.c_void_p()
ccall(cport.c2_frompoints, npts, pts, bnds, force_closed, ct.byref(ret))
return ret
def build_rect_grid(xdata, ydata, bnds):
nx = ct.c_int(len(xdata))
xdata = list_to_c(xdata, float)
ny = ct.c_int(len(ydata))
ydata = list_to_c(ydata, float)
bnds = list_to_c(supplement(bnds, 4), 'int')
ret = ct.c_void_p()
ccall(cport.g2_rect_grid, nx, xdata, ny, ydata, bnds, ct.byref(ret))
return ret
def build_ring_grid(p0, rdata, adata, bnds):
p0 = list_to_c(p0, float)
nr = ct.c_int(len(rdata))
rdata = list_to_c(rdata, float)
na = ct.c_int(len(adata))
adata = list_to_c(adata, float)
bnds = list_to_c(supplement(bnds, 2), int)
ret = ct.c_void_p()
ccall(cport.g2_ring_grid, p0, nr, rdata, na, adata, bnds, ct.byref(ret))
return ret
def connect_subcontours(objs, fx, close, shift):
nobjs = ct.c_int(len(objs))
objs = list_to_c(objs, "void*")
nfx = ct.c_int(len(fx))
fx = list_to_c(fx, int)
shift = ct.c_int(shift)
ret = ct.c_void_p()
ccall(cport.c2_connect_subcontours, nobjs, objs, nfx, fx, shift, close,
ct.byref(ret))
return ret
def extrude(g2obj, zvals, bbot, btop, bside=None):
d2 = g2.dims(g2obj)
nzvals = ct.c_int(len(zvals))
zvals = list_to_c(zvals, float)
bbot = list_to_c(supplement(bbot, d2[2]), int)
btop = list_to_c(supplement(btop, d2[2]), int)
bside = ct.c_int(bside if bside is not None else -1)
ret = ct.c_void_p()
ccall(cport.g3_extrude, g2obj, nzvals, zvals, bbot, btop, bside,
ct.byref(ret))
return ret
def revolve(g2obj, vec, phivals, center_tri, bt1, bt2):
vec = list_to_c(concat(vec), float)
nphivals = ct.c_int(len(phivals))
phivals = list_to_c(phivals, float)
center_tri = ct.c_int(center_tri)
bt1 = ct.c_int(bt1)
bt2 = ct.c_int(bt2)
ret = ct.c_void_p()
ccall(cport.g3_revolve, g2obj, vec, nphivals, phivals, center_tri, bt1,
bt2, ct.byref(ret))
return ret
def build_circ_grid(p0, rdata, adata, istrian, bnd):
p0 = list_to_c(p0, float)
nr = ct.c_int(len(rdata))
rdata = list_to_c(rdata, float)
na = ct.c_int(len(adata))
adata = list_to_c(adata, float)
istrian = ct.c_int(istrian)
bnd = ct.c_int(bnd)
ret = ct.c_void_p()
ccall(cport.g2_circ_grid, p0, nr, rdata, na, adata, istrian, bnd,
ct.byref(ret))
return ret
def tetrahedral_fill(sobjs, constrs, pts, pt_sizes, cb):
nsobjs = ct.c_int(len(sobjs))
sobjs = list_to_c(sobjs, 'void*')
nconstrs = ct.c_int(len(constrs))
constrs = list_to_c(constrs, 'void*')
npts = ct.c_int(len(pts))
pts = list_to_c(concat(pts), float)
pt_sizes = list_to_c(pt_sizes, float)
ret = ct.c_void_p()
ccall_cb(cport.g3_tetrahedral_fill, cb, nsobjs, sobjs, nconstrs, constrs,
npts, pts, pt_sizes, ct.byref(ret))
return ret
def from_points_edges(points, eds):
""" eds = [[p0, p1, cleft, cright, btype], ....] """
npoints = ct.c_int(len(points))
points = list_to_c(concat(points), float)
neds = ct.c_int(len(eds))
eds = list_to_c(concat(eds), int)
ret = ct.c_void_p()
ccall(cport.g2_from_points_edges, npoints, points, neds, eds,
ct.byref(ret))
return ret
def matched_partition(obj, conts, pts, step, infdist, power, a0):
nconts = ct.c_int(len(conts))
conts = list_to_c(conts, "void*")
npts = ct.c_int(len(pts) / 3)
pts = list_to_c(pts, float)
step = ct.c_double(step)
infdist = ct.c_double(infdist)
power = ct.c_double(power)
a0 = ct.c_double(a0)
ret = ct.c_void_p()
ccall(cport.c2_matched_partition, obj, nconts, conts,
npts, pts, step, infdist, power, a0,
ct.byref(ret))
return ret
def closest_points(obj, pts, proj):
npts = ct.c_int(len(pts))
pts = list_to_c(concat(pts), 'float')
ret = (ct.c_double * len(pts))()
ccall(cport.c2_closest_points, obj, npts, pts, proj, ret)
it = iter(ret)
return [[a, b] for a, b in zip(it, it)]
def unstructed_fill(domain, constraint, embpts, filler):
nembpts = ct.c_int(len(embpts) / 3)
embpts = list_to_c(embpts, float)
ret = ct.c_void_p()
ccall(cport.g2_unstructured_fill, domain, constraint, nembpts, embpts,
filler, ct.byref(ret))
return ret
def regular_hex_grid(area, crad, strict):
area = list_to_c(area, float)
crad = ct.c_double(crad)
areatype = "hex" if len(area) == 3 else "rect"
strict = ct.c_int(strict)
ret = ct.c_void_p()
ccall(cport.g2_hex_grid, areatype, area, crad, strict, ct.byref(ret))
return ret
def custom_rectangular_grid(algo, left, bottom, right, top, herw, rinvalid,
cb):
herw = list_to_c(supplement(herw, 4), float)
rinvalid = ct.c_int(rinvalid)
ret = ct.c_void_p()
ccall_cb(cport.g2_custom_rect_grid, cb, algo, left, bottom, right, top,
herw, rinvalid, ct.byref(ret))
return ret
def map_grid(base_obj, target_obj, base_points, target_points, snap,
bt_from_contour, algo, is_reversed, rinvalid, cb):
npoints = min(len(base_points), len(target_points))
base_points = base_points[:npoints]
target_points = target_points[:npoints]
npoints = ct.c_int(npoints)
base_points = list_to_c(concat(base_points), float)
target_points = list_to_c(concat(target_points), float)
bt_from_contour = ct.c_int(bt_from_contour)
is_reversed = ct.c_int(is_reversed)
rinvalid = ct.c_int(rinvalid)
ret = ct.c_void_p()
ccall_cb(cport.g2_map_grid, cb, base_obj, target_obj, npoints, base_points,
target_points, snap, bt_from_contour, algo, is_reversed, rinvalid,
ct.byref(ret))
return ret
def from_points_cells(points, cls, bedges):
"""
cls = [[p1, p2, p3, ...], [p1, p2, ....]]
bedges: [[p1, p2, btype], ...]
"""
npoints = ct.c_int(len(points))
points = list_to_c(concat(points), float)
ncells = ct.c_int(len(cls))
cellsizes = list_to_c(map(len, cls), int)
cellvert = list_to_c(concat(cls), int)
nbedges = ct.c_int(len(bedges))
bedges = list_to_c(concat(bedges), int)
ret = ct.c_void_p()
ccall(cport.g2_from_points_cells, npoints, points, ncells, cellsizes,
cellvert, nbedges, bedges, ct.byref(ret))
return ret
def circ4grid(algo, p0, rad, step, sqrside, rcoef):
p0 = list_to_c(p0, float)
rad = ct.c_double(rad)
step = ct.c_double(step)
sqrside = ct.c_double(sqrside)
rcoef = ct.c_double(rcoef)
ret = ct.c_void_p()
ccall(cport.g2_circ4grid, algo, p0, rad, step, sqrside, rcoef,
ct.byref(ret))
return ret
def closest_points(obj, pts, proj):
npts = ct.c_int(len(pts))
pts = list_to_c(concat(pts), 'float')
ret = (ct.c_double * len(pts))()
if proj == "vertex":
proj = ct.c_int(0)
elif proj == "edge":
proj = ct.c_int(1)
else:
raise ValueError
ccall(cport.g2_closest_points, obj, npts, pts, proj, ret)
it = iter(ret)
return [[a, b] for a, b in zip(it, it)]
def segment_partition(start, end, hstart, hend, hinternal):
start = ct.c_double(start)
end = ct.c_double(end)
hstart = ct.c_double(hstart)
hend = ct.c_double(hend)
ninternal = ct.c_int(len(hinternal) / 2)
hinternal = list_to_c(hinternal, float)
nret = ct.c_int()
ret = ct.POINTER(ct.c_double)()
ccall(cport.c2_segment_partition, start, end, hstart, hend,
ninternal, hinternal, ct.byref(nret), ct.byref(ret))
r = ret[:nret.value]
free_cside_array(ret, float)
return r
def to_msh(obj, fname, btypes, per_data, cb=None):
""" per_data : [bnd_per-0, bnd_shadow-0,
pnt_per-0 as [x, y, z], pnt_shadow-0, ...]
"""
fname = fname.encode('utf-8')
btypes = CBoundaryNames(btypes)
n_per_data = ct.c_int(len(per_data) / 4)
it = iter(per_data)
tmp = []
while 1:
try:
tmp.append(next(it))
tmp.append(next(it))
tmp.extend(next(it))
tmp.extend(next(it))
except StopIteration:
break
per_data = list_to_c(tmp, float)
ccall_cb(cport.g3_to_msh, cb, obj, fname, btypes, n_per_data, per_data)
def unite_contours(objs):
nconts = ct.c_int(len(objs))
objs = list_to_c(objs, 'void*')
ret_cont = ct.c_void_p(0)
ccall(cport.c2_unite, nconts, objs, ct.byref(ret_cont))
return ret_cont
def to_msh(obj, fname, btypes, per_data, cb=None):
fname = fname.encode('utf-8')
btypes = CBoundaryNames(btypes)
n_per_data = ct.c_int(len(per_data) / 3)
per_data = list_to_c(per_data, int)
ccall(cport.g2_to_msh, obj, fname, btypes, n_per_data, per_data)
def concatenate(objs):
objs = list_to_c(objs, "void*")
nobjs = ct.c_int(len(objs))
ret = ct.c_void_p()
ccall(cport.c2_concatenate, nobjs, objs, ct.byref(ret))
return ret
def extract_subcontours(obj, plist):
nplist = ct.c_int(len(plist))
plist = list_to_c(concat(plist), float)
ret = (ct.c_void_p * (nplist.value - 1))()
ccall(cport.c2_extract_subcontours, obj, nplist, plist, ret)
return list(ret)
