def __init__(self):
plotocc.__init__(self)
self.shell = read_step_file(self.tmpdir + "SurfUV.stp")
print(self.shell)
top = TopExp_Explorer(self.shell, TopAbs_FACE)
self.face = top.Current()
print(top.Depth())
print(self.face)
self.surf = BRep_Tool.Surface(self.face)
u0, u1, v0, v1 = shapeanalysis_GetFaceUVBounds(self.face)
print(u0, u1, v0, v1)
sas = ShapeAnalysis_Surface(self.surf)
print(sas.Value(u0, v0))
print(sas.Value(u0, v1))
print(sas.Value(u1, v0))
print(sas.Value(u1, v1))
u = u0
while u <= u1:
v = v0
while v <= v1:
p = sas.Value(u, v)
self.display.DisplayShape(p, update=False)
v += 1 / 3
u += 1 / 4
def build_points_network(self):
""" Creates a list of gp_Pnt points from a bspline surface
"""
# get face uv bounds
umin, umax, vmin, vmax = shapeanalysis_GetFaceUVBounds(self.bspl_face)
print(umin, umax, vmin, vmax)
pnts = []
sas = ShapeAnalysis_Surface(self.bspl_surf)
u = umin
while u < umax:
v = vmin
while v < vmax:
p = sas.Value(u, v)
print("u=", u, " v=", v, "->X=", p.X(), " Y=", p.Y(), " Z=",
p.Z())
self.display.DisplayShape(p, update=False)
pnts.append(p)
v += 0.1
u += 0.1
def generate_TCP():
global tool_tcp_pnts, tool_tcp_vxs, tool_tcp_vys, tool_tcp_vzs
tool_tcp_pnts = []
tool_tcp_vxs = []
tool_tcp_vys = []
tool_tcp_vzs = []
numperface = 1
num1 = round(abs(math.sqrt(numperface)))
num2 = round(abs(math.sqrt(numperface)))
numofrots = 8
for sur in surf:
umin, umax, vmin, vmax = shapeanalysis_GetFaceUVBounds(sur)
bsur = BRepAdaptor_Surface(sur, True)
for i in range(0, num1 + 1):
for j in range(0, num2 + 1):
u = umin + i * (umax - umin) / num1
v = vmin + j * (vmax - vmin) / num2
point, Vx, Vy, Vz = get_point(bsur, u, v)
flag = 0
for apoint in tool_tcp_pnts:
if abs(point.Distance(apoint)) < 0.1:
flag = 1
break
if flag == 0:
for k in range(0, numofrots):
ang = 2 * math.pi / numofrots
tool_tcp_pnts.append(point)
Vx = Vx.Rotated(gp_Ax1(point, gp_Dir(Vz)), ang)
tool_tcp_vxs.append(Vx)
Vy = Vy.Rotated(gp_Ax1(point, gp_Dir(Vz)), ang)
tool_tcp_vys.append(Vy)
tool_tcp_vzs.append(Vz)
display_coord(tool_tcp_pnts, tool_tcp_vxs, tool_tcp_vys, tool_tcp_vzs)
display.DisplayMessage(gp_Pnt(100, 100, 100),
'TCP #:' + str(len(tool_tcp_pnts)),
height=None,
message_color=(1, 1, 1),
update=True)
def build_points_network(bspl_srf):
""" Creates a list of gp_Pnt points from a bspline surface
"""
# first create a face
face = BRepBuilderAPI_MakeFace(bspl_srf, 1e-6).Face()
# get face uv bounds
umin, umax, vmin, vmax = shapeanalysis_GetFaceUVBounds(face)
print(umin, umax, vmin, vmax)
pnts = []
sas = ShapeAnalysis_Surface(bspl_srf)
u = umin
while u < umax:
v = vmin
while v < vmax:
p = sas.Value(u, v)
print("u=", u, " v=", v, "->X=", p.X(), " Y=", p.Y(), " Z=", p.Z())
pnts.append(p)
v += 0.1
u += 0.1
return pnts
from OCC.Core.gp import gp_Pnt
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeFace
from OCC.Core.TColgp import TColgp_Array2OfPnt
from OCC.Core.GeomAPI import GeomAPI_PointsToBSplineSurface
from OCC.Core.GeomAbs import GeomAbs_C2
from OCC.Core.ShapeAnalysis import ShapeAnalysis_Surface, shapeanalysis_GetFaceUVBounds
p1 = gp_Pnt(-15, 200, 10)
p2 = gp_Pnt(5, 204, 0)
p3 = gp_Pnt(15, 200, 0)
p4 = gp_Pnt(-15, 20, 15)
p5 = gp_Pnt(-5, 20, 0)
p6 = gp_Pnt(15, 20, 35)
array = TColgp_Array2OfPnt(1, 3, 1, 2)
array.SetValue(1, 1, p1)
array.SetValue(2, 1, p2)
array.SetValue(3, 1, p3)
array.SetValue(1, 2, p4)
array.SetValue(2, 2, p5)
array.SetValue(3, 2, p6)
bspl_surf = GeomAPI_PointsToBSplineSurface(array, 3, 8, GeomAbs_C2,
0.001).Surface()
face = BRepBuilderAPI_MakeFace(bspl_surf, 1e-6).Face()
umin, umax, vmin, vmax = shapeanalysis_GetFaceUVBounds(face)
print(umin, umax, vmin, vmax)
