# example how to use the scripting API of the drawing module
#
# first of all you need the Part and the Drawing module:
import FreeCAD, Part, Drawing

# create a small sample part
Part.show(
    Part.makeBox(100, 100, 100)
    .cut(Part.makeCylinder(80, 100))
    .cut(Part.makeBox(90, 40, 100))
    .cut(Part.makeBox(20, 85, 100))
)

# direct projection. The G0 means hard edge, the G1 is tangend continues.
Shape = App.ActiveDocument.Shape.Shape
[visiblyG0, visiblyG1, hiddenG0, hiddenG1] = Drawing.project(Shape)
print("visible edges:", len(visiblyG0.Edges))
print("hidden edges:", len(hiddenG0.Edges))
# all was projected on the Z-plane:
print(
    "Bnd Box shape: X=",
    Shape.BoundBox.XLength,
    " Y=",
    Shape.BoundBox.YLength,
    " Z=",
    Shape.BoundBox.ZLength,
)
print(
    "Bnd Box project: X=",
    visiblyG0.BoundBox.XLength,
    " Y=",
    visiblyG0.BoundBox.YLength,
    " Z=",
    visiblyG0.BoundBox.ZLength,
)

# different projection vector
[visiblyG0, visiblyG1, hiddenG0, hiddenG1] = Drawing.project(Shape, Base.Vector(1, 1, 1))

# project to SVG
resultSVG = Drawing.projectToSVG(Shape, App.Vector(1, 1, 1))
print(resultSVG)

# And now the parametric way
#
# insert a Page object and assign a template
App.activeDocument().addObject("Drawing::FeaturePage", "Page")
App.activeDocument().Page.Template = (
    App.ConfigGet("AppHomePath") + "Mod/Drawing/Templates/A3_Landscape.svg"
)

# create a view on the "Shape" object, define the position and scale and assign it to a Page
App.activeDocument().addObject("Drawing::FeatureViewPart", "View")
App.activeDocument().View.Source = App.activeDocument().Shape
App.activeDocument().View.Direction = (0.0, 0.0, 1.0)
App.activeDocument().View.X = 10.0
App.activeDocument().View.Y = 10.0
App.activeDocument().Page.addObject(App.activeDocument().View)

# create a second view on the same object but the view is
# rotatet 90 degrees.
App.activeDocument().addObject("Drawing::FeatureViewPart", "ViewRot")
App.activeDocument().ViewRot.Source = App.activeDocument().Shape
App.activeDocument().ViewRot.Direction = (0.0, 0.0, 1.0)
App.activeDocument().ViewRot.X = 290.0
App.activeDocument().ViewRot.Y = 30.0
App.activeDocument().ViewRot.Scale = 1.0
App.activeDocument().ViewRot.Rotation = 90.0
App.activeDocument().Page.addObject(App.activeDocument().ViewRot)

# create a third view on the same object but with an isometric
# view direction. Also the hidden lines are activated.

App.activeDocument().addObject("Drawing::FeatureViewPart", "ViewIso")
App.activeDocument().ViewIso.Source = App.activeDocument().Shape
App.activeDocument().ViewIso.Direction = (1.0, 1.0, 1.0)
App.activeDocument().ViewIso.X = 335.0
App.activeDocument().ViewIso.Y = 140.0
App.activeDocument().ViewIso.ShowHiddenLines = True
App.activeDocument().Page.addObject(App.activeDocument().ViewIso)

# change something and update.
# The update process change the view and the page
App.activeDocument().View.X = 30.0
App.activeDocument().View.Y = 30.0
App.activeDocument().View.Scale = 1.5
App.activeDocument().recompute()

# Accessing the bits and peaces:
# get the SVG fragment of a single view
ViewSVG = App.activeDocument().View.ViewResult
print(ViewSVG)

# get the hole result page (its a file in the document temp dir, only read allowed)
print("Resulting SVG document: ", App.activeDocument().Page.PageResult)
file = open(App.activeDocument().Page.PageResult, "r")
print("Result page is ", len(file.readlines()), " lines long")
# important, give free the file!
del file

# insert a view with your own content:
App.activeDocument().addObject("Drawing::FeatureView", "ViewSelf")
App.activeDocument().ViewSelf.ViewResult = """<g id="ViewSelf"
  stroke="rgb(0, 0, 0)"
  stroke-width="0.35"
  stroke-linecap="butt"
  stroke-linejoin="miter"
  transform="translate(30,30)"
  fill="#00cc00"
 >

<ellipse cx="40" cy="40" rx="30" ry="15"/>
</g>
"""
App.activeDocument().Page.addObject(App.activeDocument().ViewSelf)

App.activeDocument().recompute()

del Shape, ViewSVG, resultSVG