geom/doc/salome/gui/GEOM/input/tui_measurement_tools.doc

/*!

\page tui_measurement_tools_page Measurement Tools

<br><h2>Point Coordinates</h2>

\code
import math
import geompy

# create a point
point = geompy.MakeVertex(15., 23., 80.)

# get the coordinates of the point and check its values
coords = geompy.PointCoordinates(point)

# check the obtained coordinate values
tolerance = 1.e-07
def IsEqual(val1, val2): return (math.fabs(val1 - val2) < tolerance)

if IsEqual(coords[0], 15.) and IsEqual(coords[1], 23.) and IsEqual(coords[2], 80.):
    print "All values are OK."
else :
    print "Coordinates of point must be (15, 23, 80), but returned (",
    print coords[0], ", ", coords[1], ", ", coords[2], ")"
    pass 
\endcode

<br><h2>Basic Properties</h2>

\code
import geompy
import math

# create a box
box = geompy.MakeBoxDXDYDZ(100,30,100)
props = geompy.BasicProperties(box)
print "\nBox 100x30x100 Basic Properties:"
print " Wires length: ", props[0]
print " Surface area: ", props[1]
print " Volume      : ", props[2]
length = math.sqrt((props[0] - 1840)*(props[0] - 1840))
area = math.sqrt((props[1] - 32000)*(props[1] - 32000))
volume = math.sqrt((props[2] - 300000)*(props[2] - 300000))
if length > 1e-7 or area > 1e-7 or volume > 1e-7:
    print "While must be:"
    print " Wires length: ", 1840
    print " Surface area: ", 32000
    print " Volume      : ", 300000.
\endcode

<br><h2>Center of masses</h2>

\code
import geompy
import math

# create a box
box = geompy.MakeBoxDXDYDZ(100,30,100)
cm = geompy.MakeCDG(box)
if cm is None:
    raise RuntimeError, "MakeCDG(box) failed"
else:
    print "\nCentre of gravity of box has been successfully obtained:"
    coords = geompy.PointCoordinates(cm)
    print "(", coords[0], ", ", coords[1], ", ", coords[2], ")"
    dx = math.sqrt((coords[0] - 50)*(coords[0] - 50))
    dy = math.sqrt((coords[1] - 15)*(coords[1] - 15))
    dz = math.sqrt((coords[2] - 50)*(coords[2] - 50))
    if dx > 1e-7 or dy > 1e-7 or dz > 1e-7:
        print "But must be (50, 15, 50)" 
\endcode

<br><h2>Inertia</h2>

\code
import geompy
import math

# create a box
box = geompy.MakeBoxDXDYDZ(100,30,100)
In = geompy.Inertia(box)
print "\nInertia matrix of box 100x30x100:"
print " (", In[0], ", ", In[1], ", ", In[2], ")"
print " (", In[3], ", ", In[4], ", ", In[5], ")"
print " (", In[6], ", ", In[7], ", ", In[8], ")"
print "Main moments of inertia of box 100x30x100:"
print " Ix = ", In[9], ", Iy = ", In[10], ", Iz = ", In[11] 
\endcode

<br><h2>Check Free Boundaries</h2>

\code
import os
import geompy
import salome
gg = salome.ImportComponentGUI("GEOM")

# create boxes
box1 = geompy.MakeBox(0,0,0,100,50,100)
box2 = geompy.MakeBox(100,0,0,250,50,100)

# make a compound
compound = geompy.MakeCompound([box1, box2])

# import from *.brep
ImportFromBREP = geompy.ImportBREP(os.getenv("DATA_DIR")+"/Shapes/Brep/flight_solid.brep")

# get a face
faces = geompy.SubShapeAllSorted(ImportFromBREP, geompy.ShapeType["FACE"])

# get the free boundary for face 32
Res = geompy.GetFreeBoundary(faces[32])
isSuccess   = Res[0]
ClosedWires = Res[1]
OpenWires   = Res[2]

if isSuccess == 1 :
    print "Checking free boudaries is OK."
else :
    print "Checking free boudaries is KO!"
print "len(ClosedWires) = ", len(ClosedWires)

i = 0
for wire in ClosedWires :
    wire_name = "Face 32 -> Close wires : WIRE %d"%(i+1)
    geompy.addToStudy(ClosedWires[i], wire_name)
    if i < len(ClosedWires) :
        i = i+ 1

print "len(OpenWires) = ", len(OpenWires)

i = 0
for wire in OpenWires :
    wire_name = "Face 32 -> Open wires : WIRE %d"%(i+1)
    geompy.addToStudy(OpenWires[i], wire_name)
    if i < len(OpenWires) :
        i = i+ 1

# get the free boundary for face 41
Res = geompy.GetFreeBoundary(faces[41])
isSuccess   = Res[0]
ClosedWires = Res[1]
OpenWires   = Res[2]

if isSuccess == 1 :
    print "Checking free boudaries is OK."
else :
    print "Checking free boudaries is KO!"
print "len(ClosedWires) = ", len(ClosedWires)

i = 0
for wire in ClosedWires :
    wire_name = "Face 41 -> Close wires : WIRE %d"%(i+1)
    geompy.addToStudy(ClosedWires[i], wire_name)
    if i < len(ClosedWires) :
        i = i+ 1

print "len(OpenWires) = ", len(OpenWires)

i = 0
for wire in OpenWires :
    wire_name = "Face 41 -> Open wires : WIRE %d"%(i+1)
    geompy.addToStudy(OpenWires[i], wire_name)
    if i < len(OpenWires) :
        i = i+ 1

# add the imported object to the study
id_ImportFromBREP = geompy.addToStudy(ImportFromBREP, "ImportFromBREP")
salome.sg.updateObjBrowser(1)
\endcode


<br><h2>Check Free Faces</h2>

\code
import geompy
import salome
gg = salome.ImportComponentGUI("GEOM")

# create a vertex and a vector
p1 = geompy.MakeVertex(35, 35, 0)
p2 = geompy.MakeVertex(35, 35, 50)
v = geompy.MakeVector(p1, p2)

# create a cylinder
cylinder = geompy.MakeCone(p1, v, 30, 20, 20)

# create a cone
cone = geompy.MakeCone(p1, v, 70, 40, 60)

# make cut
cut = geompy.MakeCut(cone, cylinder)

# get faces as sub-shapes
faces = []
faces = geompy.SubShapeAllSorted(cut, geompy.ShapeType["FACE"])
f_2 = geompy.GetSubShapeID(cut, faces[0])

# remove one face from the shape
cut_without_f_2 = geompy.SuppressFaces(cut, [f_2])

# suppress the specified wire
result = geompy.GetFreeFacesIDs(cut_without_f_2)
print "A number of free faces is ", len(result)

# add objects in the study
all_faces = geompy.SubShapeAllSorted(cut_without_f_2, geompy.ShapeType["FACE"])
for face in all_faces :
    sub_shape_id = geompy.GetSubShapeID(cut_without_f_2, face)
    if result.count(sub_shape_id) > 0 :
        face_name = "Free face %d"%(sub_shape_id)
        geompy.addToStudy(face, face_name)

# in this example all faces from cut_without_f_2 are free
id_cut_without_f_2 = geompy.addToStudy(cut_without_f_2, "Cut without f_2")

# display the results
gg.createAndDisplayGO(id_cut_without_f_2)
gg.setDisplayMode(id_cut_without_f_2,1) 
\endcode



<br><h2>Bounding Box</h2>

\code
import geompy

# create a box
box = geompy.MakeBoxDXDYDZ(100,30,100)
bb = geompy.BoundingBox(box)
print "\nBounding Box of box 100x30x100:"
print " Xmin = ", bb[0], ", Xmax = ", bb[1]
print " Ymin = ", bb[2], ", Ymax = ", bb[3]
print " Zmin = ", bb[4], ", Zmax = ", bb[5] 
\endcode

<br><h2>Minimal Distance</h2>

\code
import geompy

# create boxes
box1 = geompy.MakeBoxDXDYDZ(100,30,100)
box2 = geompy.MakeBox(105,0,0,200,30,100)
min_dist = geompy.MinDistance(box1,box2)
print "\nMinimal distance between box1 and box2 = ", min_dist 
\endcode
 
<br><h2>Tolerance</h2>

\code
import geompy

# create a box
box = geompy.MakeBoxDXDYDZ(100,30,100)
Toler = geompy.Tolerance(box)
print "\nBox 100x30x100 tolerance:"
print " Face min. tolerance: ", Toler[0]
print " Face max. tolerance: ", Toler[1]
print " Edge min. tolerance: ", Toler[2]
print " Edge max. tolerance: ", Toler[3]
print " Vertex min. tolerance: ", Toler[4]
print " Vertex max. tolerance: ", Toler[5] 
\endcode

<br><h2>Angle</h2>

\code
import salome
salome.salome_init()

import math
import geompy
geompy.init_geom(salome.myStudy)

OX  = geompy.MakeVectorDXDYDZ(10, 0,0)
OXY = geompy.MakeVectorDXDYDZ(10,10,0)

# in one plane
Angle = geompy.GetAngle(OX, OXY)

print "\nAngle between OX and OXY = ", Angle
if math.fabs(Angle - 45.0) > 1e-05:
    print "  Error: returned angle is", Angle, "while must be 45.0"
    pass

# not in one plane
OXY_shift = geompy.MakeTranslation(OXY,10,-10,20)
Angle = geompy.GetAngle(OX, OXY_shift)

print "Angle between OX and OXY_shift = ", Angle
if math.fabs(Angle - 45.0) > 1e-05:
    print "  Error: returned angle is", Angle, "while must be 45.0"
    pass

# not linear
pnt1 = geompy.MakeVertex(0, 0, 0)
pnt2 = geompy.MakeVertex(10, 0, 0)
pnt3 = geompy.MakeVertex(20, 10, 0)
arc  = geompy.MakeArc(pnt1, pnt2, pnt3)
Angle = geompy.GetAngle(OX, arc)

if (math.fabs(Angle + 1.0) > 1e-6 or geompy.MeasuOp.IsDone()):
    print "Error. Angle must not be computed on curvilinear edges"
    pass

\endcode


 
<br><h2>What Is</h2>

\code
import geompy

# create a box
box = geompy.MakeBoxDXDYDZ(100,30,100)
Descr = geompy.WhatIs(box)
print "\nBox 100x30x100 description:"
print Descr 
\endcode

<br><h2>Check Shape</h2>

\code
import geompy

# create a box
box = geompy.MakeBoxDXDYDZ(100,30,100)
IsValid = geompy.CheckShape(box)
if IsValid == 0:
    raise RuntimeError, "Invalid box created"
else:
    print "\nBox is valid" 
\endcode
 
<br><h2>Check Compound of Blocks</h2>

\code
import geompy
import salome
gg = salome.ImportComponentGUI("GEOM")

# create boxes
box1 = geompy.MakeBox(0,0,0,100,50,100)
box2 = geompy.MakeBox(100,0,0,250,50,100)

# make a compound
compound = geompy.MakeCompound([box1, box2])

# glue the faces of the compound
tolerance = 1e-5
glue = geompy.MakeGlueFaces(compound, tolerance)
IsValid = geompy.CheckCompoundOfBlocks(glue)
if IsValid == 0:
    raise RuntimeError, "Invalid compound created"
else:
    print "\nCompound is valid" 
\endcode

*/