/
DraftTrackers.py
1059 lines (951 loc) · 40.8 KB
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DraftTrackers.py
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#***************************************************************************
#* *
#* Copyright (c) 2011 *
#* Yorik van Havre <yorik@uncreated.net> *
#* *
#* This program is free software; you can redistribute it and/or modify *
#* it under the terms of the GNU Lesser General Public License (LGPL) *
#* as published by the Free Software Foundation; either version 2 of *
#* the License, or (at your option) any later version. *
#* for detail see the LICENCE text file. *
#* *
#* This program is distributed in the hope that it will be useful, *
#* but WITHOUT ANY WARRANTY; without even the implied warranty of *
#* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
#* GNU Library General Public License for more details. *
#* *
#* You should have received a copy of the GNU Library General Public *
#* License along with this program; if not, write to the Free Software *
#* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
#* USA *
#* *
#***************************************************************************
__title__="FreeCAD Draft Trackers"
__author__ = "Yorik van Havre"
__url__ = "http://www.freecadweb.org"
## @package DraftTrackers
# \ingroup DRAFT
# \brief Custom Pivy-based objects used by the Draft workbench
#
# This module contains a collection of Coin3D (pivy)-based objects
# that are used by the Draft workbench to draw temporary geometry
# on the 3D view
import FreeCAD,FreeCADGui,math,Draft, DraftVecUtils
from FreeCAD import Vector
from pivy import coin
class Tracker:
"A generic Draft Tracker, to be used by other specific trackers"
def __init__(self,dotted=False,scolor=None,swidth=None,children=[],ontop=False,name=None):
global Part, DraftGeomUtils
import Part, DraftGeomUtils
self.ontop = ontop
color = coin.SoBaseColor()
color.rgb = scolor or FreeCADGui.draftToolBar.getDefaultColor("ui")
drawstyle = coin.SoDrawStyle()
if swidth:
drawstyle.lineWidth = swidth
if dotted:
drawstyle.style = coin.SoDrawStyle.LINES
drawstyle.lineWeight = 3
drawstyle.linePattern = 0x0f0f #0xaa
node = coin.SoSeparator()
for c in [drawstyle, color] + children:
node.addChild(c)
self.switch = coin.SoSwitch() # this is the on/off switch
if name:
self.switch.setName(name)
self.switch.addChild(node)
self.switch.whichChild = -1
self.Visible = False
from DraftGui import todo
todo.delay(self._insertSwitch, self.switch)
def finalize(self):
from DraftGui import todo
todo.delay(self._removeSwitch, self.switch)
self.switch = None
def _insertSwitch(self, switch):
'''insert self.switch into the scene graph. Must not be called
from an event handler (or other scene graph traversal).'''
sg=Draft.get3DView().getSceneGraph()
if self.ontop:
sg.insertChild(switch,0)
else:
sg.addChild(switch)
def _removeSwitch(self, switch):
'''remove self.switch from the scene graph. As with _insertSwitch,
must not be called during scene graph traversal).'''
sg=Draft.get3DView().getSceneGraph()
if sg.findChild(switch) >= 0:
sg.removeChild(switch)
def on(self):
self.switch.whichChild = 0
self.Visible = True
def off(self):
self.switch.whichChild = -1
self.Visible = False
def lowerTracker(self):
'''lowers the tracker to the bottom of the scenegraph, so
it doesn't obscure the other objects'''
if self.switch:
sg=Draft.get3DView().getSceneGraph()
sg.removeChild(self.switch)
sg.addChild(self.switch)
def raiseTracker(self):
'''raises the tracker to the top of the scenegraph, so
it obscures the other objects'''
if self.switch:
sg=Draft.get3DView().getSceneGraph()
sg.removeChild(self.switch)
sg.insertChild(self.switch,0)
class snapTracker(Tracker):
"A Snap Mark tracker, used by tools that support snapping"
def __init__(self):
color = coin.SoBaseColor()
color.rgb = FreeCADGui.draftToolBar.getDefaultColor("snap")
self.marker = coin.SoMarkerSet() # this is the marker symbol
self.marker.markerIndex = FreeCADGui.getMarkerIndex("", 9)
self.coords = coin.SoCoordinate3() # this is the coordinate
self.coords.point.setValue((0,0,0))
node = coin.SoAnnotation()
node.addChild(self.coords)
node.addChild(color)
node.addChild(self.marker)
Tracker.__init__(self,children=[node],name="snapTracker")
def setMarker(self,style):
self.marker.markerIndex = FreeCADGui.getMarkerIndex(style, 9)
def setCoords(self,point):
self.coords.point.setValue((point.x,point.y,point.z))
def addCoords(self,point):
l = self.coords.point.getValues()
l.append(coin.SbVec3f(point.x,point.y,point.z))
self.coords.point.setValues(l)
def clear(self):
self.coords.point.deleteValues(0)
class lineTracker(Tracker):
"A Line tracker, used by the tools that need to draw temporary lines"
def __init__(self,dotted=False,scolor=None,swidth=None,ontop=False):
line = coin.SoLineSet()
line.numVertices.setValue(2)
self.coords = coin.SoCoordinate3() # this is the coordinate
self.coords.point.setValues(0,2,[[0,0,0],[1,0,0]])
Tracker.__init__(self,dotted,scolor,swidth,[self.coords,line],ontop,name="lineTracker")
def p1(self,point=None):
"sets or gets the first point of the line"
if point:
if self.coords.point.getValues()[0].getValue() != tuple(point):
self.coords.point.set1Value(0,point.x,point.y,point.z)
else:
return Vector(self.coords.point.getValues()[0].getValue())
def p2(self,point=None):
"sets or gets the second point of the line"
if point:
if self.coords.point.getValues()[-1].getValue() != tuple(point):
self.coords.point.set1Value(1,point.x,point.y,point.z)
else:
return Vector(self.coords.point.getValues()[-1].getValue())
def getLength(self):
"returns the length of the line"
p1 = Vector(self.coords.point.getValues()[0].getValue())
p2 = Vector(self.coords.point.getValues()[-1].getValue())
return (p2.sub(p1)).Length
class rectangleTracker(Tracker):
"A Rectangle tracker, used by the rectangle tool"
def __init__(self,dotted=False,scolor=None,swidth=None,face=False):
self.origin = Vector(0,0,0)
line = coin.SoLineSet()
line.numVertices.setValue(5)
self.coords = coin.SoCoordinate3() # this is the coordinate
self.coords.point.setValues(0,50,[[0,0,0],[2,0,0],[2,2,0],[0,2,0],[0,0,0]])
if face:
m1 = coin.SoMaterial()
m1.transparency.setValue(0.5)
m1.diffuseColor.setValue([0.5,0.5,1.0])
f = coin.SoIndexedFaceSet()
f.coordIndex.setValues([0,1,2,3])
Tracker.__init__(self,dotted,scolor,swidth,[self.coords,line,m1,f],name="rectangleTracker")
else:
Tracker.__init__(self,dotted,scolor,swidth,[self.coords,line],name="rectangleTracker")
self.u = FreeCAD.DraftWorkingPlane.u
self.v = FreeCAD.DraftWorkingPlane.v
def setorigin(self,point):
"sets the base point of the rectangle"
self.coords.point.set1Value(0,point.x,point.y,point.z)
self.coords.point.set1Value(4,point.x,point.y,point.z)
self.origin = point
def update(self,point):
"sets the opposite (diagonal) point of the rectangle"
diagonal = point.sub(self.origin)
inpoint1 = self.origin.add(DraftVecUtils.project(diagonal,self.v))
inpoint2 = self.origin.add(DraftVecUtils.project(diagonal,self.u))
self.coords.point.set1Value(1,inpoint1.x,inpoint1.y,inpoint1.z)
self.coords.point.set1Value(2,point.x,point.y,point.z)
self.coords.point.set1Value(3,inpoint2.x,inpoint2.y,inpoint2.z)
def setPlane(self,u,v=None):
'''sets given (u,v) vectors as working plane. You can give only u
and v will be deduced automatically given current workplane'''
self.u = u
if v:
self.v = v
else:
norm = FreeCAD.DraftWorkingPlane.u.cross(FreeCAD.DraftWorkingPlane.v)
self.v = self.u.cross(norm)
def p1(self,point=None):
"sets or gets the base point of the rectangle"
if point:
self.setorigin(point)
else:
return Vector(self.coords.point.getValues()[0].getValue())
def p2(self):
"gets the second point (on u axis) of the rectangle"
return Vector(self.coords.point.getValues()[3].getValue())
def p3(self,point=None):
"sets or gets the opposite (diagonal) point of the rectangle"
if point:
self.update(point)
else:
return Vector(self.coords.point.getValues()[2].getValue())
def p4(self):
"gets the fourth point (on v axis) of the rectangle"
return Vector(self.coords.point.getValues()[1].getValue())
def getSize(self):
"returns (length,width) of the rectangle"
p1 = Vector(self.coords.point.getValues()[0].getValue())
p2 = Vector(self.coords.point.getValues()[2].getValue())
diag = p2.sub(p1)
return ((DraftVecUtils.project(diag,self.u)).Length,(DraftVecUtils.project(diag,self.v)).Length)
def getNormal(self):
"returns the normal of the rectangle"
return (self.u.cross(self.v)).normalize()
def isInside(self,point):
"returns True if the given point is inside the rectangle"
vp = point.sub(self.p1())
uv = self.p2().sub(self.p1())
vv = self.p4().sub(self.p1())
uvp = DraftVecUtils.project(vp,uv)
vvp = DraftVecUtils.project(vp,vv)
if uvp.getAngle(uv) < 1:
if vvp.getAngle(vv) < 1:
if uvp.Length <= uv.Length:
if vvp.Length <= vv.Length:
return True
return False
class dimTracker(Tracker):
"A Dimension tracker, used by the dimension tool"
def __init__(self,dotted=False,scolor=None,swidth=None):
line = coin.SoLineSet()
line.numVertices.setValue(4)
self.coords = coin.SoCoordinate3() # this is the coordinate
self.coords.point.setValues(0,4,[[0,0,0],[0,0,0],[0,0,0],[0,0,0]])
Tracker.__init__(self,dotted,scolor,swidth,[self.coords,line],name="dimTracker")
self.p1 = self.p2 = self.p3 = None
def update(self,pts):
if not pts:
return
elif len(pts) == 1:
self.p3 = pts[0]
else:
self.p1 = pts[0]
self.p2 = pts[1]
if len(pts) > 2:
self.p3 = pts[2]
self.calc()
def calc(self):
import Part
if (self.p1 != None) and (self.p2 != None):
points = [DraftVecUtils.tup(self.p1,True),DraftVecUtils.tup(self.p2,True),\
DraftVecUtils.tup(self.p1,True),DraftVecUtils.tup(self.p2,True)]
if self.p3 != None:
p1 = self.p1
p4 = self.p2
if DraftVecUtils.equals(p1,p4):
proj = None
else:
base = Part.LineSegment(p1,p4).toShape()
proj = DraftGeomUtils.findDistance(self.p3,base)
if not proj:
p2 = p1
p3 = p4
else:
p2 = p1.add(proj.negative())
p3 = p4.add(proj.negative())
points = [DraftVecUtils.tup(p1),DraftVecUtils.tup(p2),DraftVecUtils.tup(p3),DraftVecUtils.tup(p4)]
self.coords.point.setValues(0,4,points)
class bsplineTracker(Tracker):
"A bspline tracker"
def __init__(self,dotted=False,scolor=None,swidth=None,points = []):
self.bspline = None
self.points = points
self.trans = coin.SoTransform()
self.sep = coin.SoSeparator()
self.recompute()
Tracker.__init__(self,dotted,scolor,swidth,[self.trans,self.sep],name="bsplineTracker")
def update(self, points):
self.points = points
self.recompute()
def recompute(self):
if (len(self.points) >= 2):
if self.bspline: self.sep.removeChild(self.bspline)
self.bspline = None
c = Part.BSplineCurve()
# DNC: allows to close the curve by placing ends close to each other
if ( len(self.points) >= 3 ) and ( (self.points[0] - self.points[-1]).Length < Draft.tolerance() ):
# YVH: Added a try to bypass some hazardous situations
try:
c.interpolate(self.points[:-1], True)
except Part.OCCError:
pass
elif self.points:
try:
c.interpolate(self.points, False)
except Part.OCCError:
pass
c = c.toShape()
buf=c.writeInventor(2,0.01)
#fp=open("spline.iv","w")
#fp.write(buf)
#fp.close()
try:
ivin = coin.SoInput()
ivin.setBuffer(buf)
ivob = coin.SoDB.readAll(ivin)
except:
# workaround for pivy SoInput.setBuffer() bug
import re
buf = buf.replace("\n","")
pts = re.findall("point \[(.*?)\]",buf)[0]
pts = pts.split(",")
pc = []
for p in pts:
v = p.strip().split()
pc.append([float(v[0]),float(v[1]),float(v[2])])
coords = coin.SoCoordinate3()
coords.point.setValues(0,len(pc),pc)
line = coin.SoLineSet()
line.numVertices.setValue(-1)
self.bspline = coin.SoSeparator()
self.bspline.addChild(coords)
self.bspline.addChild(line)
self.sep.addChild(self.bspline)
else:
if ivob and ivob.getNumChildren() > 1:
self.bspline = ivob.getChild(1).getChild(0)
self.bspline.removeChild(self.bspline.getChild(0))
self.bspline.removeChild(self.bspline.getChild(0))
self.sep.addChild(self.bspline)
else:
FreeCAD.Console.PrintWarning("bsplineTracker.recompute() failed to read-in Inventor string\n")
#######################################
class bezcurveTracker(Tracker):
"A bezcurve tracker"
def __init__(self,dotted=False,scolor=None,swidth=None,points = []):
self.bezcurve = None
self.points = points
self.degree = None
self.trans = coin.SoTransform()
self.sep = coin.SoSeparator()
self.recompute()
Tracker.__init__(self,dotted,scolor,swidth,[self.trans,self.sep],name="bezcurveTracker")
def update(self, points, degree=None):
self.points = points
if degree:
self.degree = degree
self.recompute()
def recompute(self):
if self.bezcurve:
for seg in self.bezcurve:
self.sep.removeChild(seg)
seg = None
self.bezcurve = []
if (len(self.points) >= 2):
if self.degree:
poles=self.points[1:]
segpoleslst = [poles[x:x+self.degree] for x in range(0, len(poles), (self.degree or 1))]
else:
segpoleslst = [self.points]
startpoint=self.points[0]
for segpoles in segpoleslst:
c = Part.BezierCurve() #last segment may have lower degree
c.increase(len(segpoles))
c.setPoles([startpoint]+segpoles)
c = c.toShape()
startpoint = segpoles[-1]
buf=c.writeInventor(2,0.01)
#fp=open("spline.iv","w")
#fp.write(buf)
#fp.close()
try:
ivin = coin.SoInput()
ivin.setBuffer(buf)
ivob = coin.SoDB.readAll(ivin)
except:
# workaround for pivy SoInput.setBuffer() bug
import re
buf = buf.replace("\n","")
pts = re.findall("point \[(.*?)\]",buf)[0]
pts = pts.split(",")
pc = []
for p in pts:
v = p.strip().split()
pc.append([float(v[0]),float(v[1]),float(v[2])])
coords = coin.SoCoordinate3()
coords.point.setValues(0,len(pc),pc)
line = coin.SoLineSet()
line.numVertices.setValue(-1)
bezcurveseg = coin.SoSeparator()
bezcurveseg.addChild(coords)
bezcurveseg.addChild(line)
self.sep.addChild(bezcurveseg)
else:
if ivob and ivob.getNumChildren() > 1:
bezcurveseg = ivob.getChild(1).getChild(0)
bezcurveseg.removeChild(bezcurveseg.getChild(0))
bezcurveseg.removeChild(bezcurveseg.getChild(0))
self.sep.addChild(bezcurveseg)
else:
FreeCAD.Console.PrintWarning("bezcurveTracker.recompute() failed to read-in Inventor string\n")
self.bezcurve.append(bezcurveseg)
#######################################
class arcTracker(Tracker):
"An arc tracker"
def __init__(self,dotted=False,scolor=None,swidth=None,start=0,end=math.pi*2,normal=None):
self.circle = None
self.startangle = math.degrees(start)
self.endangle = math.degrees(end)
self.trans = coin.SoTransform()
self.trans.translation.setValue([0,0,0])
self.sep = coin.SoSeparator()
self.autoinvert = True
if normal:
self.normal = normal
else:
self.normal = FreeCAD.DraftWorkingPlane.axis
self.basevector = self.getDeviation()
self.recompute()
Tracker.__init__(self,dotted,scolor,swidth,[self.trans, self.sep],name="arcTracker")
def getDeviation(self):
"returns a deviation vector that represents the base of the circle"
import Part
c = Part.makeCircle(1,Vector(0,0,0),self.normal)
return c.Vertexes[0].Point
def setCenter(self,cen):
"sets the center point"
self.trans.translation.setValue([cen.x,cen.y,cen.z])
def setRadius(self,rad):
"sets the radius"
self.trans.scaleFactor.setValue([rad,rad,rad])
def getRadius(self):
"returns the current radius"
return self.trans.scaleFactor.getValue()[0]
def setStartAngle(self,ang):
"sets the start angle"
self.startangle = math.degrees(ang)
self.recompute()
def setEndAngle(self,ang):
"sets the end angle"
self.endangle = math.degrees(ang)
self.recompute()
def getAngle(self,pt):
"returns the angle of a given vector"
c = self.trans.translation.getValue()
center = Vector(c[0],c[1],c[2])
rad = pt.sub(center)
a = DraftVecUtils.angle(rad,self.basevector,self.normal)
#print(a)
return(a)
def getAngles(self):
"returns the start and end angles"
return(self.startangle,self.endangle)
def setStartPoint(self,pt):
"sets the start angle from a point"
self.setStartAngle(-self.getAngle(pt))
def setEndPoint(self,pt):
"sets the end angle from a point"
self.setEndAngle(-self.getAngle(pt))
def setApertureAngle(self,ang):
"sets the end angle by giving the aperture angle"
ap = math.degrees(ang)
self.endangle = self.startangle + ap
self.recompute()
def recompute(self):
import Part,re
if self.circle:
self.sep.removeChild(self.circle)
self.circle = None
if (self.endangle < self.startangle) or not self.autoinvert:
c = Part.makeCircle(1,Vector(0,0,0),self.normal,self.endangle,self.startangle)
else:
c = Part.makeCircle(1,Vector(0,0,0),self.normal,self.startangle,self.endangle)
buf=c.writeInventor(2,0.01)
try:
ivin = coin.SoInput()
ivin.setBuffer(buf)
ivob = coin.SoDB.readAll(ivin)
except:
# workaround for pivy SoInput.setBuffer() bug
buf = buf.replace("\n","")
pts = re.findall("point \[(.*?)\]",buf)[0]
pts = pts.split(",")
pc = []
for p in pts:
v = p.strip().split()
pc.append([float(v[0]),float(v[1]),float(v[2])])
coords = coin.SoCoordinate3()
coords.point.setValues(0,len(pc),pc)
line = coin.SoLineSet()
line.numVertices.setValue(-1)
self.circle = coin.SoSeparator()
self.circle.addChild(coords)
self.circle.addChild(line)
self.sep.addChild(self.circle)
else:
if ivob and ivob.getNumChildren() > 1:
self.circle = ivob.getChild(1).getChild(0)
self.circle.removeChild(self.circle.getChild(0))
self.circle.removeChild(self.circle.getChild(0))
self.sep.addChild(self.circle)
else:
FreeCAD.Console.PrintWarning("arcTracker.recompute() failed to read-in Inventor string\n")
class ghostTracker(Tracker):
'''A Ghost tracker, that allows to copy whole object representations.
You can pass it an object or a list of objects, or a shape.'''
def __init__(self,sel,dotted=False,scolor=None,swidth=None):
self.trans = coin.SoTransform()
self.trans.translation.setValue([0,0,0])
self.children = [self.trans]
rootsep = coin.SoSeparator()
if not isinstance(sel,list):
sel = [sel]
for obj in sel:
rootsep.addChild(self.getNode(obj))
self.children.append(rootsep)
Tracker.__init__(self,dotted,scolor,swidth,children=self.children,name="ghostTracker")
def update(self,obj):
"recreates the ghost from a new object"
obj.ViewObject.show()
self.finalize()
sep = self.getNode(obj)
Tracker.__init__(self,children=[self.sep])
self.on()
obj.ViewObject.hide()
def move(self,delta):
"moves the ghost to a given position, relative from its start position"
self.trans.translation.setValue([delta.x,delta.y,delta.z])
def rotate(self,axis,angle):
"rotates the ghost of a given angle"
self.trans.rotation.setValue(coin.SbVec3f(DraftVecUtils.tup(axis)),angle)
def center(self,point):
"sets the rotation/scale center of the ghost"
self.trans.center.setValue(point.x,point.y,point.z)
def scale(self,delta):
"scales the ghost by the given factor"
self.trans.scaleFactor.setValue([delta.x,delta.y,delta.z])
def getNode(self,obj):
"returns a coin node representing the given object"
import Part
if isinstance(obj,Part.Shape):
return self.getNodeLight(obj)
elif obj.isDerivedFrom("Part::Feature"):
return self.getNodeFull(obj)
else:
return self.getNodeFull(obj)
def getNodeFull(self,obj):
"gets a coin node which is a full copy of the current representation"
sep = coin.SoSeparator()
try:
sep.addChild(obj.ViewObject.RootNode.copy())
# add Part container offset
if hasattr(obj,"getGlobalPlacement"):
if obj.Placement != obj.getGlobalPlacement():
if sep.getChild(0).getNumChildren() > 0:
if isinstance(sep.getChild(0).getChild(0),coin.SoTransform):
gpl = obj.getGlobalPlacement()
sep.getChild(0).getChild(0).translation.setValue(tuple(gpl.Base))
sep.getChild(0).getChild(0).rotation.setValue(gpl.Rotation.Q)
except:
print("ghostTracker: Error retrieving coin node (full)")
return sep
def getNodeLight(self,shape):
"extract a lighter version directly from a shape"
# error-prone
sep = coin.SoSeparator()
try:
inputstr = coin.SoInput()
inputstr.setBuffer(shape.writeInventor())
coinobj = coin.SoDB.readAll(inputstr)
# only add wireframe or full node?
sep.addChild(coinobj.getChildren()[1])
# sep.addChild(coinobj)
except:
print("ghostTracker: Error retrieving coin node (light)")
return sep
def getMatrix(self):
r = FreeCADGui.ActiveDocument.ActiveView.getViewer().getSoRenderManager().getViewportRegion()
v = coin.SoGetMatrixAction(r)
m = self.trans.getMatrix(v)
if m:
m = m.getValue()
return FreeCAD.Matrix(m[0][0],m[0][1],m[0][2],m[0][3],
m[1][0],m[1][1],m[1][2],m[1][3],
m[2][0],m[2][1],m[2][2],m[2][3],
m[3][0],m[3][1],m[3][2],m[3][3])
else:
return FreeCAD.Matrix()
def setMatrix(self,matrix):
m = coin.SbMatrix(matrix.A11,matrix.A12,matrix.A13,matrix.A14,
matrix.A21,matrix.A22,matrix.A23,matrix.A24,
matrix.A31,matrix.A32,matrix.A33,matrix.A34,
matrix.A41,matrix.A42,matrix.A43,matrix.A44)
self.trans.setMatrix(m)
class editTracker(Tracker):
"A node edit tracker"
def __init__(self,pos=Vector(0,0,0),name=None,idx=0,objcol=None,\
marker=FreeCADGui.getMarkerIndex("quad", 9),inactive=False):
color = coin.SoBaseColor()
if objcol:
color.rgb = objcol[:3]
else:
color.rgb = FreeCADGui.draftToolBar.getDefaultColor("snap")
self.marker = coin.SoMarkerSet() # this is the marker symbol
self.marker.markerIndex = marker
self.coords = coin.SoCoordinate3() # this is the coordinate
self.coords.point.setValue((pos.x,pos.y,pos.z))
if inactive:
selnode = coin.SoSeparator()
else:
selnode = coin.SoType.fromName("SoFCSelection").createInstance()
if name:
selnode.documentName.setValue(FreeCAD.ActiveDocument.Name)
selnode.objectName.setValue(name)
selnode.subElementName.setValue("EditNode"+str(idx))
node = coin.SoAnnotation()
selnode.addChild(self.coords)
selnode.addChild(color)
selnode.addChild(self.marker)
node.addChild(selnode)
ontop = not inactive
Tracker.__init__(self,children=[node],ontop=ontop,name="editTracker")
self.on()
def set(self,pos):
self.coords.point.setValue((pos.x,pos.y,pos.z))
def get(self):
p = self.coords.point.getValues()[0]
return Vector(p[0],p[1],p[2])
def move(self,delta):
self.set(self.get().add(delta))
class PlaneTracker(Tracker):
"A working plane tracker"
def __init__(self):
# getting screen distance
p1 = Draft.get3DView().getPoint((100,100))
p2 = Draft.get3DView().getPoint((110,100))
bl = (p2.sub(p1)).Length * (Draft.getParam("snapRange",5)/2)
pick = coin.SoPickStyle()
pick.style.setValue(coin.SoPickStyle.UNPICKABLE)
self.trans = coin.SoTransform()
self.trans.translation.setValue([0,0,0])
m1 = coin.SoMaterial()
m1.transparency.setValue(0.8)
m1.diffuseColor.setValue([0.4,0.4,0.6])
c1 = coin.SoCoordinate3()
c1.point.setValues([[-bl,-bl,0],[bl,-bl,0],[bl,bl,0],[-bl,bl,0]])
f = coin.SoIndexedFaceSet()
f.coordIndex.setValues([0,1,2,3])
m2 = coin.SoMaterial()
m2.transparency.setValue(0.7)
m2.diffuseColor.setValue([0.2,0.2,0.3])
c2 = coin.SoCoordinate3()
c2.point.setValues([[0,bl,0],[0,0,0],[bl,0,0],[-.05*bl,.95*bl,0],[0,bl,0],
[.05*bl,.95*bl,0],[.95*bl,.05*bl,0],[bl,0,0],[.95*bl,-.05*bl,0]])
l = coin.SoLineSet()
l.numVertices.setValues([3,3,3])
s = coin.SoSeparator()
s.addChild(pick)
s.addChild(self.trans)
s.addChild(m1)
s.addChild(c1)
s.addChild(f)
s.addChild(m2)
s.addChild(c2)
s.addChild(l)
Tracker.__init__(self,children=[s],name="planeTracker")
def set(self,pos=None):
if pos:
Q = FreeCAD.DraftWorkingPlane.getRotation().Rotation.Q
else:
plm = FreeCAD.DraftWorkingPlane.getPlacement()
Q = plm.Rotation.Q
pos = plm.Base
self.trans.translation.setValue([pos.x,pos.y,pos.z])
self.trans.rotation.setValue([Q[0],Q[1],Q[2],Q[3]])
self.on()
class wireTracker(Tracker):
"A wire tracker"
def __init__(self,wire):
self.line = coin.SoLineSet()
self.closed = DraftGeomUtils.isReallyClosed(wire)
if self.closed:
self.line.numVertices.setValue(len(wire.Vertexes)+1)
else:
self.line.numVertices.setValue(len(wire.Vertexes))
self.coords = coin.SoCoordinate3()
self.update(wire)
Tracker.__init__(self,children=[self.coords,self.line],name="wireTracker")
def update(self,wire,forceclosed=False):
if wire:
if self.closed or forceclosed:
self.line.numVertices.setValue(len(wire.Vertexes)+1)
else:
self.line.numVertices.setValue(len(wire.Vertexes))
for i in range(len(wire.Vertexes)):
p=wire.Vertexes[i].Point
self.coords.point.set1Value(i,[p.x,p.y,p.z])
if self.closed or forceclosed:
t = len(wire.Vertexes)
p = wire.Vertexes[0].Point
self.coords.point.set1Value(t,[p.x,p.y,p.z])
class gridTracker(Tracker):
"A grid tracker"
def __init__(self):
col = [0.2,0.2,0.3]
pick = coin.SoPickStyle()
pick.style.setValue(coin.SoPickStyle.UNPICKABLE)
self.trans = coin.SoTransform()
self.trans.translation.setValue([0,0,0])
mat1 = coin.SoMaterial()
mat1.transparency.setValue(0.7)
mat1.diffuseColor.setValue(col)
self.coords1 = coin.SoCoordinate3()
self.lines1 = coin.SoLineSet()
mat2 = coin.SoMaterial()
mat2.transparency.setValue(0.3)
mat2.diffuseColor.setValue(col)
self.coords2 = coin.SoCoordinate3()
self.lines2 = coin.SoLineSet()
mat3 = coin.SoMaterial()
mat3.transparency.setValue(0)
mat3.diffuseColor.setValue(col)
self.coords3 = coin.SoCoordinate3()
self.lines3 = coin.SoLineSet()
self.pts = []
s = coin.SoSeparator()
s.addChild(pick)
s.addChild(self.trans)
s.addChild(mat1)
s.addChild(self.coords1)
s.addChild(self.lines1)
s.addChild(mat2)
s.addChild(self.coords2)
s.addChild(self.lines2)
s.addChild(mat3)
s.addChild(self.coords3)
s.addChild(self.lines3)
Tracker.__init__(self,children=[s],name="gridTracker")
self.reset()
def update(self):
"redraws the grid"
# resize the grid to make sure it fits an exact pair number of main lines
numlines = self.numlines//self.mainlines//2*2*self.mainlines
bound = (numlines//2)*self.space
pts = []
mpts = []
apts = []
for i in range(numlines+1):
curr = -bound + i*self.space
z = 0
if i/float(self.mainlines) == i//self.mainlines:
if round(curr,4) == 0:
apts.extend([[-bound,curr,z],[bound,curr,z]])
apts.extend([[curr,-bound,z],[curr,bound,z]])
else:
mpts.extend([[-bound,curr,z],[bound,curr,z]])
mpts.extend([[curr,-bound,z],[curr,bound,z]])
else:
pts.extend([[-bound,curr,z],[bound,curr,z]])
pts.extend([[curr,-bound,z],[curr,bound,z]])
if pts != self.pts:
idx = []
midx = []
aidx = []
for p in range(0,len(pts),2):
idx.append(2)
for mp in range(0,len(mpts),2):
midx.append(2)
for ap in range(0,len(apts),2):
aidx.append(2)
self.lines1.numVertices.deleteValues(0)
self.lines2.numVertices.deleteValues(0)
self.lines3.numVertices.deleteValues(0)
self.coords1.point.setValues(pts)
self.lines1.numVertices.setValues(idx)
self.coords2.point.setValues(mpts)
self.lines2.numVertices.setValues(midx)
self.coords3.point.setValues(apts)
self.lines3.numVertices.setValues(aidx)
self.pts = pts
def setSize(self,size):
self.numlines = size
self.update()
def setSpacing(self,space):
self.space = space
self.update()
def setMainlines(self,ml):
self.mainlines = ml
self.update()
def reset(self):
"resets the grid according to preferences settings"
self.space = Draft.getParam("gridSpacing",1)
self.mainlines = Draft.getParam("gridEvery",10)
self.numlines = Draft.getParam("gridSize",100)
self.update()
def set(self):
"moves and rotates the grid according to the current WP"
self.reset()
Q = FreeCAD.DraftWorkingPlane.getRotation().Rotation.Q
P = FreeCAD.DraftWorkingPlane.position
self.trans.rotation.setValue([Q[0],Q[1],Q[2],Q[3]])
self.trans.translation.setValue([P.x,P.y,P.z])
self.on()
def getClosestNode(self,point):
"returns the closest node from the given point"
# get the 2D coords.
# point = FreeCAD.DraftWorkingPlane.projectPoint(point)
pt = FreeCAD.DraftWorkingPlane.getLocalCoords(point)
pu = (round(pt.x/self.space,0))*self.space
pv = (round(pt.y/self.space,0))*self.space
pt = FreeCAD.DraftWorkingPlane.getGlobalCoords(Vector(pu,pv,0))
return pt
class boxTracker(Tracker):
"A box tracker, can be based on a line object"
def __init__(self,line=None,width=0.1,height=1,shaded=False):
self.trans = coin.SoTransform()
m = coin.SoMaterial()
m.transparency.setValue(0.8)
m.diffuseColor.setValue([0.4,0.4,0.6])
w = coin.SoDrawStyle()
w.style = coin.SoDrawStyle.LINES
self.cube = coin.SoCube()
self.cube.height.setValue(width)
self.cube.depth.setValue(height)
self.baseline = None
if line:
self.baseline = line
self.update()
if shaded:
Tracker.__init__(self,children=[self.trans,m,self.cube],name="boxTracker")
else:
Tracker.__init__(self,children=[self.trans,w,self.cube],name="boxTracker")
def update(self,line=None,normal=None):
import WorkingPlane, DraftGeomUtils
if not normal:
normal = FreeCAD.DraftWorkingPlane.axis
if line:
if isinstance(line,list):
bp = line[0]
lvec = line[1].sub(line[0])
else:
lvec = DraftGeomUtils.vec(line.Shape.Edges[0])
bp = line.Shape.Edges[0].Vertexes[0].Point
elif self.baseline:
lvec = DraftGeomUtils.vec(self.baseline.Shape.Edges[0])
bp = self.baseline.Shape.Edges[0].Vertexes[0].Point
else:
return
right = lvec.cross(normal)
self.cube.width.setValue(lvec.Length)
p = WorkingPlane.getPlacementFromPoints([bp,bp.add(lvec),bp.add(right)])
if p:
self.trans.rotation.setValue(p.Rotation.Q)
bp = bp.add(lvec.multiply(0.5))
bp = bp.add(DraftVecUtils.scaleTo(normal,self.cube.depth.getValue()/2))
self.pos(bp)
def setRotation(self,rot):
self.trans.rotation.setValue(rot.Q)
def pos(self,p):
self.trans.translation.setValue(DraftVecUtils.tup(p))
def width(self,w=None):
if w:
self.cube.height.setValue(w)
else:
return self.cube.height.getValue()
def length(self,l=None):
if l:
self.cube.width.setValue(l)
else:
return self.cube.width.getValue()
def height(self,h=None):
if h:
self.cube.depth.setValue(h)
self.update()
else:
return self.cube.depth.getValue()
class radiusTracker(Tracker):
"A tracker that displays a transparent sphere to inicate a radius"
def __init__(self,position=FreeCAD.Vector(0,0,0),radius=1):
self.trans = coin.SoTransform()
self.trans.translation.setValue([position.x,position.y,position.z])
m = coin.SoMaterial()
m.transparency.setValue(0.9)
m.diffuseColor.setValue([0,1,0])
self.sphere = coin.SoSphere()
self.sphere.radius.setValue(radius)
self.baseline = None
Tracker.__init__(self,children=[self.trans,m,self.sphere],name="radiusTracker")
def update(self,arg1,arg2=None):
if isinstance(arg1,FreeCAD.Vector):
self.trans.translation.setValue([arg1.x,arg1.y,arg1.z])
else:
self.sphere.radius.setValue(arg1)