exportGif.FCMacro

from ast import If
import math
import time
import os
import subprocess
import glob
from FreeCAD import Base
from pivy import coin

size=(1000,1000)
doc = FreeCAD.ActiveDocument

docDir, docFilename = os.path.split(doc.FileName)
filePrefix = os.path.splitext(docFilename)[0]

for o in doc.RootObjects:
    if o.ViewObject.isVisible():
        filePrefix=filePrefix+'-'+o.Label.split('[')[0]
        break

gifdir = "gif/"
if not os.path.exists(gifdir):
  os.makedirs(gifdir)

filename = os.path.join(docDir, 'gif/', filePrefix)

steps=36
angle=2*math.pi/steps

matX=Base.Matrix()
matX.rotateX(angle)
stepsX=Base.Placement(matX).Rotation

matY=Base.Matrix()
matY.rotateY(angle)
stepsY=Base.Placement(matY).Rotation

matZ=Base.Matrix()
matZ.rotateZ(angle)
stepsZ=Base.Placement(matZ).Rotation

view=Gui.ActiveDocument.ActiveView
cam=view.getCameraNode()
rotCamera=Base.Rotation(*cam.orientation.getValue().getValue())

# this sets the lookat point to the center of circumsphere of the global bounding box
view.fitAll()

# the camera's position, i.e. the user's eye point
position=Base.Vector(*cam.position.getValue().getValue())
distance=cam.focalDistance.getValue()

# view direction
vec=rotCamera.multVec(Base.Vector(0,0,-1))

# this is the point on the screen the camera looks at
# when rotating the camera we should make this point fix
lookat=position+vec*distance

# around x axis
for i in range(steps):
    rotCamera=stepsX.multiply(rotCamera)
    cam.orientation.setValue(*rotCamera.Q)
    vec=rotCamera.multVec(Base.Vector(0,0,-1))
    pos=lookat-vec*distance
    cam.position.setValue(pos.x,pos.y,pos.z)
    Gui.updateGui()
    time.sleep(0.3)
    view.saveImage(filename+"-x-" + '{:02d}'.format(i) + ".png",*size)
if subprocess.call("convert " + filename + "-x-*.png " + filename + "-x.gif",shell=True) == 0:
    subprocess.call("rm " + filename + "-x-*.png",shell=True)

# around y axis
for i in range(steps):
    rotCamera=stepsY.multiply(rotCamera)
    cam.orientation.setValue(*rotCamera.Q)
    vec=rotCamera.multVec(Base.Vector(0,0,-1))
    pos=lookat-vec*distance
    cam.position.setValue(pos.x,pos.y,pos.z)
    Gui.updateGui()
    time.sleep(0.3)
    view.saveImage(filename+"-y-" + '{:02d}'.format(i) + ".png",*size)
if subprocess.call("convert " + filename + "-y-*.png " + filename + "-y.gif",shell=True) == 0:
    subprocess.call("rm " + filename + "-y-*.png",shell=True)

# around z axis
for i in range(steps):
    rotCamera=stepsZ.multiply(rotCamera)
    cam.orientation.setValue(*rotCamera.Q)
    vec=rotCamera.multVec(Base.Vector(0,0,-1))
    pos=lookat-vec*distance
    cam.position.setValue(pos.x,pos.y,pos.z)
    Gui.updateGui()
    time.sleep(0.3)
    view.saveImage(filename+"-z-" + '{:02d}'.format(i) + ".png",*size)
if subprocess.call("convert " + filename + "-z-*.png " + filename + "-z.gif",shell=True) == 0:
    subprocess.call("rm " + filename + "-z-*.png",shell=True)