TechDraw API: Difference between revisions

From FreeCAD Documentation
No edit summary
(Marked this version for translation)
(8 intermediate revisions by 2 users not shown)
Line 83: Line 83:
===DrawViewPart Cosmetics=== <!--T:12-->
===DrawViewPart Cosmetics=== <!--T:12-->


====CosmeticVertex (CV) routines accessible from Python====
====CosmeticVertex (CV) routines accessible from Python==== <!--T:18-->


<!--T:19-->
dvp = App.ActiveDocument.View #CV's belong to views <br>
dvp = App.ActiveDocument.View #CV's belong to views <br>


<!--T:20-->
add a CosmeticVertex at p1 (View coordinates). Returns unique tag.<br>
add a CosmeticVertex at p1 (View coordinates). Returns unique tag.<br>
tag = dvp.makeCosmeticVertex(vector p1)
tag = dvp.makeCosmeticVertex(vector p1)


<!--T:21-->
add a CosmeticVertex at p1 (3d model coordinates). Returns unique tag. <br>
add a CosmeticVertex at p1 (3d model coordinates). Returns unique tag. <br>
tag = dvp.makeCosmeticVertex3d(vector p1)
tag = dvp.makeCosmeticVertex3d(vector p1)


<!--T:22-->
returns CosmeticVertex with unique id.<br>
returns CosmeticVertex with unique id.<br>
cv = dvp.getCosmeticVertex(string id)
cv = dvp.getCosmeticVertex(string id)


<!--T:23-->
returns CosmeticVertex with name (Vertex6). Used in selections.<br>
returns CosmeticVertex with name (Vertex6). Used in selections.<br>
cv = dvp.getCosmeticVertexBySelection(string name)
cv = dvp.getCosmeticVertexBySelection(string name)


<!--T:25-->
replaces CosmeticVertex in View. Returns True/False.<br>
bool = dvp.replaceCosmeticVertex(object cv)

remove CosmeticVertex from View. Returns None.<br>
remove CosmeticVertex from View. Returns None.<br>
dvp.removeCosmeticVertex(object cv)
dvp.removeCosmeticVertex(object cv)


<!--T:26-->
remove all CosmeticVertices from the View. Returns None.<br>
remove all CosmeticVertices from the View. Returns None.<br>
dvp.clearCosmeticVertices()
dvp.clearCosmeticVertices()


<!--T:27-->
CosmeticView attributes
CosmeticView attributes<br>
Tag: unique identifier. String.
Tag: unique identifier. String.<br>
Point: location within view. Vector.
Point: location within view. Vector.<br>


<!--T:28-->
********************************************************************************
********************************************************************************
{{Code|code=
{{Code|code=
Line 117: Line 123:
# -*- coding: utf-8 -*-
# -*- coding: utf-8 -*-


<!--T:29-->
# Py CosmeticVertex demo
# Py CosmeticVertex demo
import FreeCAD
import FreeCAD
import TechDraw
import TechDraw


<!--T:30-->
v = App.ActiveDocument.View
v = App.ActiveDocument.View
p = App.Vector(-3.0, -3.0, 0.0)
p = App.Vector(-3.0, -3.0, 0.0)


<!--T:31-->
#make CV
#make CV
tag = v.makeCosmeticVertex(p)
tag = v.makeCosmeticVertex(p)
print("t: {}".format(tag))
print("t: {}".format(tag))


<!--T:32-->
#retrieve CV
#retrieve CV
cv = v.getCosmeticVertex(tag)
cv = v.getCosmeticVertex(tag)
Line 133: Line 143:
print("Tag: {}".format(cv.Tag))
print("Tag: {}".format(cv.Tag))


#replace CV
p2 = App.Vector(4.0, 3.0, 0.0)
cv.Point = p2
v.replaceCosmeticVertex(cv)


<!--T:34-->
cv2 = v.getCosmeticVertexBySelection("Vertex4")
cv2 = v.getCosmeticVertexBySelection("Vertex4")
print("New Point: {}".format(cv2.Point))
print("New Point: {}".format(cv2.Point))


<!--T:35-->
#make CV from 3d
#make CV from 3d
p3d = App.Vector(2.0, 2.0, 2.0)
p3d = App.Vector(2.0, 2.0, 2.0)
Line 149: Line 157:
}}
}}


====CosmeticEdge (CE) routines accessible from Python====
====CosmeticEdge (CE) routines accessible from Python==== <!--T:36-->


<!--T:37-->
dvp = App.ActiveDocument.View #CE's belong to views
dvp = App.ActiveDocument.View #CE's belong to views<br>


<!--T:38-->
Make a CosmeticEdge from p1 to p2(View coordinates). Returns unique tag.
Make a CosmeticEdge from p1 to p2(View coordinates). Returns unique tag.<br>
tag = dvp.makeCosmeticLine(p1, p2)
tag = dvp.makeCosmeticLine(p1, p2)


<!--T:39-->
Make a CosmeticEdge at center with radius radius(View coordinates). Returns unique tag.
Make a CosmeticEdge at center with radius radius(View coordinates). Returns unique tag.<br>
tag = dvp.makeCosmeticCircle(center, radius)
tag = dvp.makeCosmeticCircle(center, radius)


<!--T:40-->
Make a CosmeticEdge at center with radius radius(View coordinates) from start angle to end angle. Returns unique tag.
Make a CosmeticEdge at center with radius radius(View coordinates) from start angle to end angle. Returns unique tag.<br>
tag = dvp.makeCosmeticCircleArc(center, radius, start, end)
tag = dvp.makeCosmeticCircleArc(center, radius, start, end)


<!--T:41-->
returns CosmeticEdge with unique id.
returns CosmeticEdge with unique id.<br>
ce = dvp.getCosmeticEdge(id)
ce = dvp.getCosmeticEdge(id)


<!--T:42-->
returns CosmeticEdge by name (Edge25). Used in selections
returns CosmeticEdge by name (Edge25). Used in selections.<br>
ce = dvp.getCosmeticEdgeBySelection(name)
ce = dvp.getCosmeticEdgeBySelection(name)


<!--T:44-->
replace CosmeticEdge ce in dvp PropertyCosmeticEdgeList. ce.Tag must match an existing tag
remove CosmeticEdge ce from View. Returns None.<br>
bool = dvp.replaceCosmeticEdge(ce)

remove CosmeticEdge ce from View. Returns None.
dvp.removeCosmeticEdge(ce)
dvp.removeCosmeticEdge(ce)


<!--T:45-->
remove all CosmeticLines from the View. Returns None.
remove all CosmeticLines from the View. Returns None.<br>
dvp.clearCosmeticEdges()
dvp.clearCosmeticEdges()


<!--T:46-->
CosmeticEdge attributes
CosmeticEdge attributes<br>
Tag: unique identifier. String.
Tag: unique identifier. String.<br>
Format: appearance attributes (style, color, weight, visible). Tuple.
Format: appearance attributes (style, color, weight, visible). Tuple.<br>


<!--T:47-->
********************************************************************************
********************************************************************************
{{Code|code=
{{Code|code=
Line 186: Line 201:
# -*- coding: utf-8 -*-
# -*- coding: utf-8 -*-


<!--T:48-->
# Py CosmeticEdge demo
# Py CosmeticEdge demo
import FreeCAD
import FreeCAD
import TechDraw
import TechDraw


<!--T:49-->
#points
#points
org = App.Vector(0.0, 0.0, 0.0)
org = App.Vector(0.0, 0.0, 0.0)
Line 201: Line 218:
bottomLeft = FreeCAD.Vector(-5.0, -5.0, 0.0)
bottomLeft = FreeCAD.Vector(-5.0, -5.0, 0.0)


<!--T:50-->
#angles
#angles
arcStart = -45
arcStart = -45
arcEnd = 45
arcEnd = 45


<!--T:51-->
#styles
#styles
solid = 1
solid = 1
Line 219: Line 238:
shadow = (0.1, 0.1, 0.1, 0.0)
shadow = (0.1, 0.1, 0.1, 0.0)


<!--T:52-->
radius = 5.0
radius = 5.0
style = dashed
style = dashed
weight = weight75
weight = weight75


<!--T:53-->
dvp = App.ActiveDocument.View
dvp = App.ActiveDocument.View


<!--T:54-->
print(dvp)
print(dvp)


<!--T:55-->
print("making line")
print("making line")
tag = dvp.makeCosmeticLine(midTop,midBot,style, weight, pyBlue)
tag = dvp.makeCosmeticLine(midTop,midBot,style, weight, pyBlue)
Line 232: Line 255:
print("line tag: {}".format(tag))
print("line tag: {}".format(tag))


<!--T:56-->
print("making diagonal")
print("making diagonal")
dvp.makeCosmeticLine(bottomLeft,topRight,solid, weight, pyGreen)
dvp.makeCosmeticLine(bottomLeft,topRight,solid, weight, pyGreen)


<!--T:57-->
print("making circle")
print("making circle")
tag2 = dvp.makeCosmeticCircle(center, radius, style, weight, pyRed)
tag2 = dvp.makeCosmeticCircle(center, radius, style, weight, pyRed)
ce2 = dvp.getCosmeticEdge(tag2)
ce2 = dvp.getCosmeticEdge(tag2)


<!--T:58-->
print("making circleArc")
print("making circleArc")
dvp.makeCosmeticCircleArc(arcCenter, radius, arcStart, arcEnd, style, weight, shadow)
dvp.makeCosmeticCircleArc(arcCenter, radius, arcStart, arcEnd, style, weight, shadow)


<!--T:59-->
#replace
#replace
print("making new format")
print("making new format")
Line 248: Line 275:
ce.Format = newFormat
ce.Format = newFormat


<!--T:61-->
print("replacing CE with tag: {}".format(ce.Tag))
ce = dvp.getCosmeticEdge(tag)
rc = dvp.replaceCosmeticEdge(ce)
print("replace returns: {}".format(rc))

print("removing CE with tag: {}".format(tag2))
print("removing CE with tag: {}".format(tag2))
dvp.removeCosmeticEdge(tag2)
dvp.removeCosmeticEdge(tag2)


<!--T:62-->
print("finished")
print("finished")
}}
}}


====CenterLine (CL) routines accessible from Python====
====CenterLine (CL) routines accessible from Python==== <!--T:63-->


<!--T:64-->
make a new CenterLine
make a new CenterLine<br>
tag = dvp.makeCenterLine(subObjs, mode)
tag = dvp.makeCenterLine(subObjs, mode)<br>


<!--T:65-->
retrieve CenterLine with unique tag
retrieve CenterLine with unique tag.<br>
cl = dvp.getCenterLine(tag)
cl = dvp.getCenterLine(tag)


<!--T:66-->
retrieve CenterLine by subobject name. Used in selection.
retrieve CenterLine by subobject name. Used in selection.<br>
cl = dvp.getCenterLine("Edge5")
cl = dvp.getCenterLine("Edge5")


<!--T:68-->
replace CenterLine cl in dvp PropertyCenterLineList. cl.Tag must match an existing tag
remove CenterLine cl from View. Returns None.<br>
bool = dvp.replaceCenterLine(cl)

remove CenterLine cl from View. Returns None.
dvp.removeCenterLine(cl)
dvp.removeCenterLine(cl)


<!--T:69-->
CenterLine Attributes
CenterLine Attributes<br>
Tag: unique identifier. String. ReadOnly.
Type: 0 - face, 1 - 2 line, 2 - 2 point. Integer. ReadOnly.
Tag: unique identifier. String. ReadOnly.<br>
Mode: 0 - vert, 1 - horiz, 2 - aligned. Integer.
Type: 0 - face, 1 - 2 line, 2 - 2 point. Integer. ReadOnly.<br>
Mode: 0 - vert, 1 - horiz, 2 - aligned. Integer.<br>
Format: appearance attributes (style, color, weight, visible). Tuple.
Format: appearance attributes (style, color, weight, visible). Tuple.<br>
HorizShift: left/right offset. Float.
VertShift: up/down offset. Float.
HorizShift: left/right offset. Float.<br>
Rotation: rotation in degrees. Float.
VertShift: up/down offset. Float.<br>
Extension: additional length to be added. Float.
Rotation: rotation in degrees. Float.<br>
Extension: additional length to be added. Float.<br>
Flip: reverse the order of points for 2 point CenterLine. Boolean.
Flip: reverse the order of points for 2 point CenterLine. Boolean.<br>
Edges: names of source edges. List of string.
Faces: names of source faces. List of string.
Edges: names of source edges. List of string.<br>
Points: names of source points (Vertices). List of string.
Faces: names of source faces. List of string.<br>
Points: names of source points (Vertices). List of string.<br>


<!--T:70-->
********************************************************************************
********************************************************************************
{{Code|code=
{{Code|code=
Line 295: Line 322:
# -*- coding: utf-8 -*-
# -*- coding: utf-8 -*-


<!--T:71-->
# Py CenterLine demo
# Py CenterLine demo
import FreeCAD
import FreeCAD
Line 300: Line 328:
import TechDraw
import TechDraw


<!--T:72-->
start = FreeCAD.Vector (1.0, 5.0, 0.0) # middle, top
start = FreeCAD.Vector (1.0, 5.0, 0.0) # middle, top
end = FreeCAD.Vector(1.0, -5.0, 0.0) # middle, bottom
end = FreeCAD.Vector(1.0, -5.0, 0.0) # middle, bottom
Line 326: Line 355:
flip = False;
flip = False;


<!--T:73-->
dvp = App.ActiveDocument.View
dvp = App.ActiveDocument.View


<!--T:74-->
print("making face CenterLine")
print("making face CenterLine")
tag = dvp.makeCenterLine(faceNames,vMode)
tag = dvp.makeCenterLine(faceNames,vMode)
Line 333: Line 364:
print("cline tag: {}".format(tag))
print("cline tag: {}".format(tag))


<!--T:75-->
#replace
#replace
print("making new format")
print("making new format")
Line 340: Line 372:
cline.Extension = 10.0
cline.Extension = 10.0


<!--T:77-->
print("replacing CL with tag: {}".format(cline.Tag))
rc = dvp.replaceCenterLine(cline)
print("replace returns: {}".format(rc))

print("making edgeCenterLine")
print("making edgeCenterLine")
cline2 = dvp.makeCenterLine(edgeNames,hMode)
cline2 = dvp.makeCenterLine(edgeNames,hMode)


<!--T:78-->
print("making vertexCenterLine")
print("making vertexCenterLine")
cline3 = dvp.makeCenterLine(vertNames,aMode)
cline3 = dvp.makeCenterLine(vertNames,aMode)


<!--T:79-->
print("finished")
print("finished")
}}
}}

===DrawViewPart Geometry=== <!--T:16-->
===DrawViewPart Geometry=== <!--T:16-->
[topoShapeEdge] = dvp.getVisibleEdges()
[topoShapeEdge] = dvp.getVisibleEdges()
Line 358: Line 390:
[topoShapeEdge] = dvp.getHiddenEdges()
[topoShapeEdge] = dvp.getHiddenEdges()


<!--T:80-->
topoShapeEdge = dvp.getEdgeByIndex(i) <br/>
topoShapeEdge = dvp.getEdgeBySelection("Edge1")


<!--T:6-->
<!--T:81-->
topoShapeVertex = dvp.getVertexByIndex(i) <br/>
{{TechDraw Tools navi}}
topoShapeVertex = dvp.getVertexBySelection("Vertex1")


<!--T:4-->
<!--T:82-->
dvp.requestPaint() Redraw the graphic for this View.
[[Category:API]]
[[Category:Poweruser Documentation]]


</translate>
</translate>
{{TechDraw Tools navi{{#translation:}}}}
{{Userdocnavi{{#translation:}}}}
[[Category:API{{#translation:}}]]
[[Category:Poweruser Documentation{{#translation:}}]]
{{clear}}
{{clear}}

Revision as of 18:17, 9 August 2020

(November 2018) This information may be incomplete and outdated. For the latest API, see the autogenerated API documentation.

These functions are part of the TechDraw Workbench and can be used in macros and from the Python console once the TechDraw module has been imported.

Good examples of basic TechDraw scripting can be found in the unit test scripts.

See the TechDrawGui API for more functions.

Example:

import FreeCAD
import TechDraw

page = FreeCAD.ActiveDocument.addObject('TechDraw::DrawPage', 'Page')
FreeCAD.ActiveDocument.addObject('TechDraw::DrawSVGTemplate', 'Template')
FreeCAD.ActiveDocument.Template.Template = templateFileSpec
FreeCAD.ActiveDocument.Page.Template = FreeCAD.ActiveDocument.Template
page.ViewObject.show()
view = FreeCAD.ActiveDocument.addObject('TechDraw::DrawViewPart', 'View')
rc = page.addView(view)
EdgeWalker(listOfEdges, [bool])

Description: Creates wires from edges in input by planar graph traversal. Optionally exclude the OuterWire by setting optional parameter to false.

Returns: List of wires sorted by size (descending)

findOuterWire(listOfEdges)

Description: Finds the OuterWire (largest) of a list of edges (that form a planar graph).

Returns: Outer wire

findShapeOutline(TopoShape, scale, direction)

Description: Project shape in direction and find outer wire of result.

Returns: Outline wire

viewPartAsDxf(DrawViewPart)

Description: Return the edges of a DrawViewPart in Dxf format.

Returns: String

Example:

fileSpecDxf = "fcOut.dxf"
v = App.ActiveDocument.View
s = TechDraw.viewPartAsDxf(v)
dxfEnd = "0\nEOF\n"
dxfFile = open(fileSpecDxf, "w")
dxfFile.write(s)
dxfFile.write(dxfEnd)
dxfFile.close()
viewPartAsSvg(DrawViewPart)

Description: Return the edges of a DrawViewPart in Svg format.

Returns: String

Example:

fileSpecSvg = "fcOut.svg"
v = App.ActiveDocument.View
s = TechDraw.viewPartAsSvg(v)
head = '<svg\n' + \
       '	xmlns="http://www.w3.org/2000/svg" version="1.1" \n' + \
       '	xmlns:freecad="http://www.freecadweb.org/wiki/index.php?title=Svg_Namespace">\n'
tail = '\n</svg>'
svgFile = open(fileSpecSvg, "w")
svgFile.write(head)
svgFile.write(s)
svgFile.write(tail)
svgFile.close()
writeDXFView(DrawViewPart, FileName)

Description: Save the DrawViewPart in Dxf.

Returns: File

Example:

import TechDraw
TechDraw.writeDXFView(myPart,myFileName)
writeDXFPage(DrawPage, FileName)

Description: Save the DrawPage in Dxf.

Returns: File

Example:

import TechDraw
TechDraw.writeDXFPage(myPage,myFileName)

DrawViewPart Cosmetics

CosmeticVertex (CV) routines accessible from Python

dvp = App.ActiveDocument.View #CV's belong to views

add a CosmeticVertex at p1 (View coordinates). Returns unique tag.
tag = dvp.makeCosmeticVertex(vector p1)

add a CosmeticVertex at p1 (3d model coordinates). Returns unique tag.
tag = dvp.makeCosmeticVertex3d(vector p1)

returns CosmeticVertex with unique id.
cv = dvp.getCosmeticVertex(string id)

returns CosmeticVertex with name (Vertex6). Used in selections.
cv = dvp.getCosmeticVertexBySelection(string name)

remove CosmeticVertex from View. Returns None.
dvp.removeCosmeticVertex(object cv)

remove all CosmeticVertices from the View. Returns None.
dvp.clearCosmeticVertices()

CosmeticView attributes
Tag: unique identifier. String.
Point: location within view. Vector.

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Py CosmeticVertex demo
import FreeCAD
import TechDraw

v = App.ActiveDocument.View
p = App.Vector(-3.0, -3.0, 0.0)

#make CV
tag = v.makeCosmeticVertex(p)
print("t: {}".format(tag))

#retrieve CV
cv = v.getCosmeticVertex(tag)
print("cv: {}".format(cv))
print("Tag: {}".format(cv.Tag))


cv2 = v.getCosmeticVertexBySelection("Vertex4")
print("New Point: {}".format(cv2.Point))

#make CV from 3d
p3d = App.Vector(2.0, 2.0, 2.0)
print("3d point in: {}".format(p3d))
tag3d = v.makeCosmeticVertex3d(p3d)
cv3 = v.getCosmeticVertex(tag3d)
print("3d point out: {}".format(cv3.Point))

CosmeticEdge (CE) routines accessible from Python

dvp = App.ActiveDocument.View #CE's belong to views

Make a CosmeticEdge from p1 to p2(View coordinates). Returns unique tag.
tag = dvp.makeCosmeticLine(p1, p2)

Make a CosmeticEdge at center with radius radius(View coordinates). Returns unique tag.
tag = dvp.makeCosmeticCircle(center, radius)

Make a CosmeticEdge at center with radius radius(View coordinates) from start angle to end angle. Returns unique tag.
tag = dvp.makeCosmeticCircleArc(center, radius, start, end)

returns CosmeticEdge with unique id.
ce = dvp.getCosmeticEdge(id)

returns CosmeticEdge by name (Edge25). Used in selections.
ce = dvp.getCosmeticEdgeBySelection(name)

remove CosmeticEdge ce from View. Returns None.
dvp.removeCosmeticEdge(ce)

remove all CosmeticLines from the View. Returns None.
dvp.clearCosmeticEdges()

CosmeticEdge attributes
Tag: unique identifier. String.
Format: appearance attributes (style, color, weight, visible). Tuple.

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Py CosmeticEdge demo
import FreeCAD
import TechDraw

#points
org = App.Vector(0.0, 0.0, 0.0)
midTop = FreeCAD.Vector (1.0, 5.0, 0.0)   # middle, top
midBot = FreeCAD.Vector(2.0, -5.0, 0.0)      # middle, bottom
stdZ = FreeCAD.Vector(0.0, 0.0, 1.0)
center = FreeCAD.Vector(0.0, 0.0, 0.0)
arcCenter = FreeCAD.Vector(3.0, 3.0, 0.0)
vPt = FreeCAD.Vector(-3.0, 3.0, 0.0)
topRight = FreeCAD.Vector(5.0, 5.0, 0.0)
bottomLeft = FreeCAD.Vector(-5.0, -5.0, 0.0)

#angles
arcStart = -45
arcEnd = 45

#styles
solid = 1 
dashed = 2
dotted = 3
#weights
weight15 = 0.15
weight75 = 0.75
#colors
pyRed = (1.0, 0.0, 0.0, 0.0)
pyBlue = (0.0, 1.0, 0.0, 0.0)
pyGreen = (0.0, 0.0, 1.0, 0.0)
pyBlack = (0.0, 0.0, 0.0, 0.0)
shadow = (0.1, 0.1, 0.1, 0.0)

radius = 5.0
style = dashed
weight = weight75

dvp = App.ActiveDocument.View

print(dvp)

print("making line")
tag = dvp.makeCosmeticLine(midTop,midBot,style, weight, pyBlue)
ce = dvp.getCosmeticEdge(tag)
print("line tag: {}".format(tag))

print("making diagonal")
dvp.makeCosmeticLine(bottomLeft,topRight,solid, weight, pyGreen)

print("making circle")
tag2 = dvp.makeCosmeticCircle(center, radius, style, weight, pyRed)
ce2 = dvp.getCosmeticEdge(tag2)

print("making circleArc")
dvp.makeCosmeticCircleArc(arcCenter, radius, arcStart, arcEnd, style, weight, shadow)

#replace
print("making new format")
oldFormat = ce.Format
newFormat = (dotted,oldFormat[1], pyRed, True)
ce.Format = newFormat

print("removing CE with tag: {}".format(tag2))
dvp.removeCosmeticEdge(tag2)

print("finished")

CenterLine (CL) routines accessible from Python

make a new CenterLine
tag = dvp.makeCenterLine(subObjs, mode)

retrieve CenterLine with unique tag.
cl = dvp.getCenterLine(tag)

retrieve CenterLine by subobject name. Used in selection.
cl = dvp.getCenterLine("Edge5")

remove CenterLine cl from View. Returns None.
dvp.removeCenterLine(cl)

CenterLine Attributes
Tag: unique identifier. String. ReadOnly.
Type: 0 - face, 1 - 2 line, 2 - 2 point. Integer. ReadOnly.
Mode: 0 - vert, 1 - horiz, 2 - aligned. Integer.
Format: appearance attributes (style, color, weight, visible). Tuple.
HorizShift: left/right offset. Float.
VertShift: up/down offset. Float.
Rotation: rotation in degrees. Float.
Extension: additional length to be added. Float.
Flip: reverse the order of points for 2 point CenterLine. Boolean.
Edges: names of source edges. List of string.
Faces: names of source faces. List of string.
Points: names of source points (Vertices). List of string.

#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Py CenterLine demo
import FreeCAD
import Part
import TechDraw

start = FreeCAD.Vector (1.0, 5.0, 0.0)   # middle, top
end = FreeCAD.Vector(1.0, -5.0, 0.0)      # middle, bottom
faceNames = ["Face0"]
edgeNames = ["Edge2", "Edge3"]
vertNames = ["Vertex1", "Vertex2"]
vMode = 0   #vertical
hMode = 1   #horizontal
aMode = 2   #aligned
#styles
solid = 1 
dashed = 2
dotted = 3
#weights
weight15 = 0.15
weight75 = 0.75
#colors
pyRed = (1.0, 0.0, 0.0, 0.0)
pyBlue = (0.0, 1.0, 0.0, 0.0)
pyBlack = (0.0, 0.0, 0.0, 0.0)
#adjustments
hShift = 1.0
vShift = 1.0
extend = 4.0
rotate = 30.0
flip = False;

dvp = App.ActiveDocument.View

print("making face CenterLine")
tag = dvp.makeCenterLine(faceNames,vMode)
cline = dvp.getCenterLine(tag)
print("cline tag: {}".format(tag))

#replace
print("making new format")
oldFormat = cline.Format
newFormat = (dotted,oldFormat[1], pyRed, True)
cline.Format = newFormat
cline.Extension = 10.0

print("making edgeCenterLine")
cline2 = dvp.makeCenterLine(edgeNames,hMode)

print("making vertexCenterLine")
cline3 = dvp.makeCenterLine(vertNames,aMode)

print("finished")

DrawViewPart Geometry

[topoShapeEdge] = dvp.getVisibleEdges()

[topoShapeEdge] = dvp.getHiddenEdges()

topoShapeEdge = dvp.getEdgeByIndex(i)
topoShapeEdge = dvp.getEdgeBySelection("Edge1")

topoShapeVertex = dvp.getVertexByIndex(i)
topoShapeVertex = dvp.getVertexBySelection("Vertex1")

dvp.requestPaint() Redraw the graphic for this View.