Foto.FCMacro

# -*- coding: utf-8 -*-
# (c) microelly 2015

__Name__ = 'Foto'
__Comment__ = 'Creates a real sized 300-dpi foto of the selected part from top view'
__Author__ = 'microelly'
__Version__ = '0.1.0'
__Date__ = ''
__License__ = ''
__Web__ = ''
__Wiki__ = ''
__Icon__ = ''
__Help__ = 'Select an object'
__Status__ = 'alpha'
__Requires__ = ''
__Contact__ = 'https://forum.freecadweb.org/memberlist.php?mode=viewprofile&u=2364'
__Communication__ = ''
__Files__ = ''

import os

import FreeCADGui


def foto(fn='/tmp/fc_camera_out.jpg', width=150, height=100, x=0, y=0, res=300):
    if res <= 0:
        # TODO: add a warning about wrong res value.
        res = 300
    dpmm = 11.8110 * res / 300
    ppy = int(dpmm * height)
    ppx = int(dpmm * width)
    y -= 1
    cam = '''#Inventor V2.1 ascii
    OrthographicCamera {{
      viewportMapping ADJUST_CAMERA
      orientation 1 0 0  0.001
      nearDistance 0
      farDistance 1000
      aspectRatio 100
      focalDistance 1
      position {x} {y} 999
      height {height}
    }}

    '''.format(x=x, y=y, height=height)

    FreeCADGui.activeDocument().activeView().setCamera(cam)

    FreeCADGui.ActiveDocument.update()
    FreeCADGui.activeDocument().activeView().saveImage(fn, ppx, ppy, '#ffffff')

fn = "/tmp/fc_photo.jpg"
res = 300

sel = FreeCADGui.Selection.getSelection()
sel0 = sel[0]
sel0.ViewObject.LineWidth = 1
bbox = sel0.Shape.BoundBox
px = 0.5 * (bbox.XMin + bbox.XMax)
py = 0.5 * (bbox.YMin + bbox.YMax)
width = bbox.XMax - bbox.XMin
height = bbox.YMax - bbox.YMin

foto(fn, width, height, px, py, res)
os.system('xdg-open {}'.format(fn))