Ejemplo n.º 1
0
 def LoadLosCameraFromFile(self, file_path):  #{{{
     fname = basename(file_path)
     ext = fname[-3:]
     if (ext == ".h5" or ext == ".hdf5"):
         self.LoadLosCamera(Camera.from_HDF5(file_path))
     else:
         self.LoadLosCamera(Camera.from_csv(file_path))
Ejemplo n.º 2
0
    def update_cameras_dict(self, nxys):  #{{{
        uaxis, vaxis = self.GetUVAxes()
        waxis = self.GetLosAxis()

        self.region_center[:] = self.cross_center[:]
        cc = self.region_center

        if (self.zoom_size is not None):
            self.region_size = self.region_size * self.zoom_size
        rs = self.region_size
        self.cam_dict['los'] = Camera(center=cc, line_of_sight_axis=waxis, up_vector=vaxis, region_size=[rs, rs], \
           distance=(rs/2.), far_cut_depth=(rs/2.), map_max_size=nxys["los"])
        self.cam_dict['u'] = Camera(center=cc, line_of_sight_axis=uaxis, up_vector=vaxis, region_size=[rs, rs], \
           distance=(rs/2.), far_cut_depth=(rs/2.), map_max_size=nxys["u"])
        self.cam_dict['v'] = Camera(center=cc, line_of_sight_axis=-vaxis, up_vector=waxis, region_size=[rs, rs], \
           distance=(rs/2.), far_cut_depth=(rs/2.), map_max_size=nxys["v"])
Ejemplo n.º 3
0
 def edit_cam(self, evt):
     self.model.update_cameras_dict(self.GetWindowSizesDict())
     EditCameraDlg = EditCameraDialog(self.model.cam_dict["los"])
     EditCameraDlg.ShowModal()
     if EditCameraDlg.ok:
         center = eval(EditCameraDlg.center.GetValue())
         line_of_sight_axis = eval(
             EditCameraDlg.line_of_sight_axis.GetValue())
         rs = float(EditCameraDlg.region_size.GetValue())
         new_cam = Camera(center=center, line_of_sight_axis=line_of_sight_axis, \
           region_size=[rs, rs], \
           distance=(rs/2.), far_cut_depth=(rs/2.), \
           map_max_size=self.model.cam_dict["los"].map_max_size)
         self.model.LoadLosCamera(new_cam)
         self.controller.gui.reset()
     EditCameraDlg.Destroy()
Ejemplo n.º 4
0
def myplot(path='.',output=-1,sink=False,center=[0.5,0.5,0.5],los='x',size=[0.5,0.5], \
           minimum=None,maximum=None,typlot='rho',record=False,igrp=-1,plot_velocity=False,slice=False):

    filerep = path
    if (record):
        savedir = os.path.join(filerep, "results")
        if not os.path.exists(savedir):
            os.makedirs(savedir)
        #mu,alpha,lmax = parseDirSink(directory)
        #savedir       = checkDir(savedir, "mu" + mu)
        #savedir       = checkDir(savedir, "lmax" + lmax)

    # if output=-1, take last output
    if output == -1:
        outputname = np.sort(glob.glob(os.path.join(filerep,
                                                    "output_?????")))[-1]
        output = int(outputname.split('_')[-1])

    # Define the file
    ro = pm.RamsesOutput(filerep, output)

    if igrp != -1 and (igrp > ro.info["ngrp"] or igrp < 0):
        print(bold + 'PROBLEM:' + reset + ' igrp=' + str(igrp) +
              '  but simulation with ngrp=' + str(ro.info["ngrp"]))
        sys.exit(1)

    # Define the output data structure (to use with pymses5)
    ro.define_amr_scalar_field("hydro", "rho", 0)
    ro.define_amr_vector_field("hydro", "vel", [1, 2, 3])
    ro.define_amr_vector_field("hydro", "Bl", [4, 5, 6])
    ro.define_amr_vector_field("hydro", "Br", [7, 8, 9])
    ro.define_amr_scalar_field("hydro", "P", 10)
    ro.define_amr_multivalued_field("hydro", "Er", 11, ro.info["ngrp"])
    ro.define_amr_vector_field(
        "hydro", "J",
        [11 + ro.info["ngrp"], 12 + ro.info["ngrp"], 13 + ro.info["ngrp"]])
    ro.define_amr_scalar_field("hydro", "eint", 14 + ro.info["ngrp"])
    if ro.info["eos"]:
        ro.define_amr_scalar_field("hydro", "T", 15 + ro.info["ngrp"])
    ro.define_amr_vector_field("grav", "g", [0, 1, 2])

    time = ro.info["time"] * ro.info["unit_time"].express(ct.kyr)
    if (sink):
        # Read sink particles
        sink_filename = os.path.join(
            filerep, 'output_%05d' % output + '/sink_%05d' % output + '.csv')
        print("Reading sinks     : " + reset + sink_filename)
        sinkp = np.loadtxt(sink_filename,
                           dtype={
                               'names':
                               ('Id', 'mass', 'x', 'y', 'z', 'vx', 'vy', 'vz',
                                'rot_period', 'lx', 'ly', 'lz', 'acc_rate',
                                'acc_lum', 'age', 'int_lum', 'Teff'),
                               'formats':
                               ('i', 'f', 'f', 'f', 'f', 'f', 'f', 'f', 'f',
                                'f', 'f', 'f', 'f', 'f', 'f', 'f', 'f')
                           },
                           delimiter=',')
        sinkp = np.atleast_1d(sinkp)  # to work even if only 1 sink
        nsink = sinkp.size

        # Define the accretion radius
        if ("ncell_racc" in ro.info):
            ncell_racc = ro.info['ncell_racc']
        else:
            ncell_racc = 4

        dxmin = 0.5**ro.info['levelmax'] * ro.info["unit_length"].express(
            ct.au)
        r_acc = dxmin * ncell_racc
        #area  = np.pi*r_acc**2

        xc, yc, zc = sinkp['x'] / ro.info['boxlen'], sinkp['y'] / ro.info[
            'boxlen'], sinkp['z'] / ro.info['boxlen']
    else:
        nsink = 0

    if nsink == 0:
        nsink = 1
        # Center
        xc, yc, zc = np.atleast_1d(center[0]), np.atleast_1d(
            center[1]), np.atleast_1d(center[2])

    cmap = pl.cm.get_cmap('seismic', 100)
    if typlot == 'rho':
        cmap = pl.cm.get_cmap('jet', 100)
    elif typlot == 'Tr':
        cmap = pl.cm.get_cmap('hot', 100)
    elif typlot == 'B':
        cmap = pl.cm.get_cmap('PuOr', 100)
    elif typlot == 'beta_plasma':
        cmap = pl.cm.get_cmap('seismic', 100)
    else:
        cmap = pl.cm.get_cmap('jet', 100)

    # Width of the region to plot
    xr, yr = size[0], size[1]
    xbl = (-xr / 2. * ro.info["unit_length"]).express(ct.au)
    xbr = (+xr / 2. * ro.info["unit_length"]).express(ct.au)
    ybl = (-yr / 2. * ro.info["unit_length"]).express(ct.au)
    ybr = (+yr / 2. * ro.info["unit_length"]).express(ct.au)
    extent = [xbl, xbr, ybl, ybr]

    # Define camera
    if los == 'x':
        upvec = "z"
        vx = 1
        vy = 2
        labelx = 'Y (AU)'
        labely = 'Z (AU)'
        plane = 'yz'
    elif los == 'y':
        upvec = "x"
        vx = 2
        vy = 0
        labelx = 'Z (AU)'
        labely = 'X (AU)'
        plane = 'zx'
    elif los == 'z':
        upvec = "y"
        vx = 0
        vy = 1
        labelx = 'X (AU)'
        labely = 'Y (AU)'
        plane = 'xy'

    def plot_func(dset):
        if typlot == 'rho':
            return dset['rho'] * ro.info["unit_density"].express(
                ct.g / ct.cm**3)
        if typlot == 'eint':
            return dset['eint'] * (ro.info["unit_density"] *
                                   ro.info["unit_velocity"]**2).express(
                                       ct.erg / ct.cm**3)
        if typlot == 'T':
            if ro.info["eos"]:
                return dset['T']
            else:
                return dset['P'] / dset['rho'] * ro.info[
                    "unit_temperature"].express(ct.K) * ro.info["mu_gas"]
        if typlot == 'B':
            B = 1./4*( (dset['Bl'][:,0]+dset['Br'][:,0])**2  \
                      +(dset['Bl'][:,1]+dset['Br'][:,1])**2  \
                      +(dset['Bl'][:,2]+dset['Br'][:,2])**2)
            return B
        # To use with pymses5
        if typlot == 'Er' or typlot == 'Tr':
            if igrp == -1:
                Er = np.sum(dset['Er'], axis=-1) * (
                    ro.info["unit_density"] *
                    ro.info["unit_velocity"]**2).express(ct.erg / ct.cm**3)
            else:
                Er = dset['Er'][:, igrp - 1] * (
                    ro.info["unit_density"] *
                    ro.info["unit_velocity"]**2).express(ct.erg / ct.cm**3)

            if typlot == 'Er':
                return Er
            else:
                return (Er / ct.a_R.express(ct.erg / ct.cm**3 / ct.K**4))**0.25

        if typlot == 'entropy':
            return dset['P'] / dset['rho']**ro.hydro_info["gamma"]

        if typlot == 'Pth_Pdyn':
            return dset['P'] / (0.5 * dset['rho'] *
                                np.sum(dset['vel']**2, axis=-1))

        if typlot == 'beta_plasma':
            B = 1./4.*( (dset['Bl'][:,0]+dset['Br'][:,0])**2  \
                      +(dset['Bl'][:,1]+dset['Br'][:,1])**2  \
                      +(dset['Bl'][:,2]+dset['Br'][:,2])**2)
            if igrp == -1:
                Er = np.sum(
                    dset['Er'], axis=-1
                )  #*(ro.info["unit_density"]*ro.info["unit_velocity"]**2).express(ct.erg/ct.cm**3)
            else:
                Er = dset[
                    'Er'][:, igrp -
                          1]  #*(ro.info["unit_density"]*ro.info["unit_velocity"]**2).express(ct.erg/ct.cm**3)

            return dset['P'] / (B)  #/dset['rho'])

        else:
            print(bold + 'Problem in typlot')
            sys.exit()

    # Fields to be read
    fields_to_read = []
    if (not ro.info["eos"] and typlot == 'T') or typlot == 'entropy':
        fields_to_read = ["rho", "P"]
    elif typlot == 'Tr':
        fields_to_read = ["Er"]
    elif typlot == 'Pth_Pdyn':
        fields_to_read = ["P", "rho", "vel"]
    elif typlot == 'B':
        fields_to_read = ["Bl", "Br"]
    elif typlot == 'beta_plasma':
        fields_to_read = ["Bl", "Br", "rho", "P", "Er"]
    else:
        fields_to_read = [typlot]
    if (plot_velocity):
        fields_to_read.append("vel")
    if not slice:
        fields_to_read.append("rho")

    fields_to_read = list(set(fields_to_read))  #to remove duplicates

    if slice:
        source = ro.amr_source(fields_to_read)
        varplot_op = ScalarOperator(plot_func)
    else:
        rt = raytracing.RayTracer(ro, fields_to_read)

        if typlot == 'rho':
            func = lambda dset: plot_func(dset) * ro.info["unit_length"
                                                          ].express(ct.cm)
            varplot_op = ScalarOperator(func)
        else:
            up_func = lambda dset: (dset["rho"] * ro.info["unit_density"].
                                    express(ct.g / ct.cm**3) * plot_func(dset))
            down_func = lambda dset: (dset["rho"] * ro.info["unit_density"].
                                      express(ct.g / ct.cm**3))
            varplot_op = FractionOperator(up_func, down_func)

    for i in range(nsink):
        fig = pl.figure()
        ax = pl.subplot(111)

        pl.xlabel(labelx)
        pl.ylabel(labely)

        cam = Camera(center=[xc[i], yc[i], zc[i]],line_of_sight_axis=los,region_size=[xr, yr] \
                         , up_vector=upvec,map_max_size=512, log_sensitive=True)

        if slice:
            mapx = SliceMap(source, cam, varplot_op, z=0.)
        else:
            # WARNING! surf_qty=True to get an integral over dz and not dSdz
            # so that if typlot=='rho', get surface density map
            # and if not, get a density-weighted map (and not a mass-weighted map)
            mapx = rt.process(varplot_op, cam, surf_qty=True)

        if typlot == 'Pth_Pdyn':
            imx    = pl.imshow(mapx.transpose(), extent = extent, origin='lower' \
                                   , vmin = minimum, vmax = maximum,cmap=cmap)
            #imx    = pl.contourf(mapx.transpose(), extent = extent, origin='lower' \
            #                       , vmin = minimum, vmax = maximum)
            cbar = pl.colorbar()
            cbar.set_label(typlot)
        else:
            imx    = pl.imshow(np.log10(mapx.transpose()), extent = extent, origin='lower' \
                                   , vmin = minimum, vmax = maximum,cmap=cmap)
            #imx    = pl.contourf(np.log10(mapx.transpose()), extent = extent, origin='lower' \
            #                       , vmin = minimum, vmax = maximum)
            cbar = pl.colorbar()

            #            cmap = pl.cm.get_cmap('jet',100)

            if typlot == 'rho':
                cbar.set_label(r'$\mathrm{log(}\rho)$', fontsize=15)
            elif typlot == 'Tr':
                cbar.set_label(r'$\mathrm{log(T_r)}$', fontsize=15)
            elif typlot == 'Pth_Pdyn':
                cbar.set_label('Pth/Pdyn')
            elif typlot == 'B':
                cbar.set_label('log(|B|)')
            elif typlot == 'beta_plasma':
                cbar.set_label(r'$\mathrm{log(}\beta)$', fontsize=15)
            else:
                cbar.set_label('Log(' + typlot + ')')

        if (sink):
            for isink in range(nsink):
                # Plot sinks position
                mass = sinkp[isink]["mass"]
                col = cmap(int(mass * 100))
                xp = (sinkp[isink]['x'] / ro.info['boxlen'] -
                      xc[i]) * ro.info["unit_length"].express(ct.au)
                yp = (sinkp[isink]['y'] / ro.info['boxlen'] -
                      yc[i]) * ro.info["unit_length"].express(ct.au)
                zp = (sinkp[isink]['z'] / ro.info['boxlen'] -
                      zc[i]) * ro.info["unit_length"].express(ct.au)

                if los == 'x':
                    ax.add_patch(
                        pl.Circle((yp, zp),
                                  radius=r_acc,
                                  fc='white',
                                  alpha=0.65))
                    ax.add_patch(
                        pl.Circle((yp, zp),
                                  radius=(r_acc / ncell_racc),
                                  fc=col,
                                  ec=col))
                #pl.plot(yp,zp,'k+',mew=2,ms=10)
                elif los == 'y':
                    ax.add_patch(
                        pl.Circle((zp, xp),
                                  radius=r_acc,
                                  fc='white',
                                  alpha=0.65))
                    ax.add_patch(
                        pl.Circle((zp, xp),
                                  radius=(r_acc / ncell_racc),
                                  fc=col,
                                  ec=col))
                #pl.plot(zp,xp,'k+',mew=2,ms=10)
                elif los == 'z':
                    ax.add_patch(
                        pl.Circle((xp, yp),
                                  radius=r_acc,
                                  fc='white',
                                  alpha=0.65))
                    ax.add_patch(
                        pl.Circle((xp, yp),
                                  radius=(r_acc / ncell_racc),
                                  fc=col,
                                  ec=col))
                #pl.plot(xp,yp,'k+',mew=2,ms=10)

        # Plot velocity field
        if (slice and plot_velocity):
            p = cam.get_slice_points(0.0)
            nx, ny = cam.get_map_size()
            dset = pm.analysis.sample_points(source, p)
            vel = dset["vel"] * ro.info["unit_velocity"].express(ct.km / ct.s)
            rs = 32
            x = np.linspace(xbl, xbr, nx)
            y = np.linspace(ybl, ybr, ny)
            u, v = np.zeros((nx, ny)), np.zeros((nx, ny))
            mask = np.zeros((nx, ny))
            for ii in range(nx):
                for jj in range(ny):
                    if (ii % rs == 0 and jj % rs == 0):
                        u[ii, jj] = vel[:, vx].reshape(nx, ny)[ii, jj]
                        v[ii, jj] = vel[:, vy].reshape(nx, ny)[ii, jj]
                    else:
                        u[ii, jj] = 'Inf'
                        v[ii, jj] = 'Inf'
                        mask[ii, jj] = 1

            u2 = u[::rs, ::rs]
            v2 = v[::rs, ::rs]
            x2 = x[::rs]
            y2 = y[::rs]

            vel_mean = np.mean(np.sqrt(u2**2 + v2**2))
            vel_max = np.max(np.sqrt(u2**2 + v2**2))

            #pl.quiver(x,y,u.transpose(),v.transpose(),scale=20*nx)
            #Q=pl.quiver(x,y,u.transpose(),v.transpose(),scale=100,pivot='mid')
            #u_masked=np.ma.masked_array(u,mask=mask)
            #v_masked=np.ma.masked_array(v,mask=mask)
            #vel_mean=np.mean(np.sqrt(u_masked**2+v_masked**2))

            Q = pl.quiver(x2,
                          y2,
                          u2.transpose(),
                          v2.transpose(),
                          scale=100,
                          pivot='mid')
            #pl.quiverkey(Q,0.7,0.92,vel_mean,r'%.2f km/s'%vel_mean,coordinates='figure')
            pl.quiverkey(Q,
                         0.7,
                         0.92,
                         vel_max,
                         r'%.2f km/s' % vel_max,
                         coordinates='figure')
            pl.axis(extent)
            del (u, v, x, y, u2, v2, x2, y2)

            if (sink):
                # Print the mass of the sinks
                mass = 0
                for j in range(nsink):
                    mass = mass + sinkp["mass"][j]

                pl.figtext(0.01,
                           00.01,
                           "$\mathrm{M}_*=$" + "%4.1f " % mass + "$M_\odot$",
                           fontsize=15)

        pl.suptitle("%.3f kyr" % time)

        if (record):
            for format in ("png", "eps", "pdf"):
                if slice:
                    namefig = os.path.join(
                        savedir, "slice_" + typlot + "_" + plane + "_eps" +
                        "_%.3f" % size[0] + "_out" + "_%05d" % output +
                        "_isink_%05d." % sinkp['Id'][i] + format)
                else:
                    namefig = os.path.join(
                        savedir, "proj_" + typlot + "_" + plane + "_eps" +
                        "_%.3f" % size[0] + "_out" + "_%05d" % output +
                        "_isink_%05d." % sinkp['Id'][i] + format)
                print(bold + "Save figure: " + reset + namefig)
                pl.savefig(namefig)
            pl.close()
        else:
            pl.ion()
            pl.show()

    if (sink):
        # Print the mass of the sinks
        for i in range(nsink):
            mass = sinkp["mass"][i]
            print(bold + "Mass(" + str(i) + "): " + reset + "%.2e Msun" % mass)
                      (dset["rho"]))
# Colormap initialisation (ran)
# the first iteration of the following "for" loop is done separately
# to save the colormap used for the whole movie
i = 0
angle = N.pi * i / nbImgRot + N.pi * .5 / 180  # add .5 to avoid grid alignment artifact problem
axe = [N.sin(angle), 0, N.cos(angle)]
center = center_init + (zoom_focus - center_init) * (i * 1. / nbImgRot)
region_size = region_size_init * ((1. / zoom_factor - 1) / nbImgRot * i + 1)
distance = distance_init * ((1. / zoom_factor - 1) / nbImgRot * i + 1)
far_cut_depth = far_cut_depth_init * (
    (1. / zoom_factor - 1) / nbImgRot * i + 1)
cam = Camera(center=center,
             line_of_sight_axis=axe,
             up_vector="y",
             region_size=region_size,
             distance=distance,
             far_cut_depth=far_cut_depth,
             map_max_size=mms)

# Octree source creation :
source = ro.amr_source(["rho"])
# We need to add an extension to the octree box loaded in memory,
# or not (if min(distance,far_cut_depth) > max(region_size))
# as the rotation is around the "y" axis,
# to allow rotation without empty starting point ray bugs
esize = 0.5**(ro.info["levelmin"] + 1) + max(region_size)
camOctSource = cam.copy()
fullOctreeDataSource = CameraOctreeDatasource(camOctSource,
                                              esize,
                                              source,
Ejemplo n.º 6
0
	# a RAMSES output in the current directory
	fileDir = None 
	outNumber = None
	mms = 256#1920
ro = RamsesOutput(fileDir, outNumber)
outNumber = ro.iout
#if myrank == 0:time0 = time()
#if myrank == 0: print "time RamsesOutput=", (time()-time0)
center = [ 0.5, 0.5, 0.5 ]
rt = RayTracerMPI(ro, ["rho"], remember_data = True)
#if myrank == 0: print "time RamsesOutput+rt=", (time()-time0)
op = FractionOperator(lambda dset: (dset["rho"]**2), lambda dset: (dset["rho"]))
i = 0 # first iteration of the following "for" loop done separately to save the colormap
angle = N.pi*i/NB_IMG + N.pi*.5/180# add .5 to avoid grid alignment artifact problem
axe = [N.sin(angle),0,N.cos(angle)]
cam  = Camera(center=[0.5, 0.5, 0.5], line_of_sight_axis=axe, up_vector="y", 
	region_size=[.5, .28125], distance=0.2, far_cut_depth=0.2, map_max_size=mms)
t0 = time()
map=rt.process(op, cam, use_balanced_cpu_list=True)
t1=time()
if myrank == 0:
	print("myrank", myrank, "rt total time = %.1f s"%(t1-t0), "mms = ", \
		mms, "max AMR read = ", cam.get_required_resolution())
	save_map_HDF5(map, cam, map_name="img%s"%(i))
	# ran used to fix the colormap during the movie (= use first frame colormap for each frame)
	ran = save_HDF5_to_img("./img%s.h5"%(i), cmap="jet",img_path="./")
	os.remove(("./img%s.h5"%(i)))
for i in range(1, NB_IMG):
	angle = N.pi*i/NB_IMG + N.pi*.5/180
	axe = [N.sin(angle),0,N.cos(angle)]
	cam  = Camera(center=[0.5, 0.5, 0.5], line_of_sight_axis=axe, 
		up_vector="y",  region_size=[.5, .28125], distance=0.2, 
Ejemplo n.º 7
0
# Colormap initialisation (ran)
i = 0.5  # We add .5 degree to avoid the 30/60/120... degree graphic bug
# inclined the galaxy by galaxy_angle (°) :
galaxy_angle = galaxy_angle_init
angle = N.pi * i / 180
axe = [N.cos(N.pi*galaxy_angle/180)*N.cos(angle),N.cos(N.pi*galaxy_angle/180)*N.sin(angle),\
 -N.sin(N.pi*galaxy_angle/180)] # = Rz(angle) * (rotation matrix Ry(galaxy_angle) * (1,0,0))
up_vector = [N.sin(N.pi*galaxy_angle/180)*N.cos(angle),N.sin(N.pi*galaxy_angle/180)*N.sin(angle),\
 -N.cos(N.pi*galaxy_angle/180)] # = Rz(angle) * (rotation matrix Ry(galaxy_angle) * (0,0,1))
region_size = region_size_init
distance = distance_init
far_cut_depth = far_cut_depth_init
cam = Camera(center=center,
             line_of_sight_axis=axe,
             up_vector=up_vector,
             region_size=region_size,
             distance=distance,
             far_cut_depth=far_cut_depth,
             map_max_size=mms,
             perspectiveAngle=perspectiveAngle)
# Octree source creation :
source = ro.amr_source(["rho"])
# extended by max(region_size) to allow rotation :
esize = 0.5**(ro.info["levelmin"] + 1) + max(max(region_size), distance,
                                             far_cut_depth)
camOctSource = cam.copy()
fullOctreeDataSource = CameraOctreeDatasource(camOctSource,
                                              esize,
                                              source,
                                              ngrid_max=ngrid_max,
                                              include_split_cells=True).dset
OctreeRT = OctreeRayTracer(fullOctreeDataSource)
Ejemplo n.º 8
0
#print zoom
#cam  = Camera(center=center, line_of_sight_axis=los, 
#	region_size=[.25*zoom, .140625*zoom], distance=0.2*zoom, 
#	far_cut_depth=0.2*zoom, map_max_size=mms)
#cam.get_required_resolution()

if myrank == 0:time0 = time()
outnumber = 42
ro = RamsesOutput("/home/labadens", outnumber)
if myrank == 0: print("RamsesOutput time=", (time()-time0))

op = FractionOperator(lambda dset: (dset["rho"]**2), 
	lambda dset: (dset["rho"]))
# Colormap initialisation (ran)
cam  = Camera(center=center, line_of_sight_axis=los, 
	region_size=[.25*zoom, .140625*zoom], distance=0.2*zoom, 
		far_cut_depth=0.2*zoom, map_max_size=mms)

source = ro.amr_source(["rho"])
esize = 0.5**(ro.info["levelmin"]+1)
camOctSource = cam.copy()
fullOctreeDataSource = CameraOctreeDatasource(camOctSource, esize, 
	source, ngrid_max=ngrid_max, include_split_cells=True).dset
OctreeRT = OctreeRayTracer(fullOctreeDataSource)
dataset_already_loaded = True
t0 = time()
map, levelmax_map = OctreeRT.process(op, cam, rgb=False, 
	use_openCL=use_openCL)
t1=time()
if myrank == 0:
	i,img_number=0,0