def test_composite_vr(self): ds = fake_random_ds(64) dd = ds.sphere(ds.domain_center, 0.45 * ds.domain_width[0]) ds.field_info[ds.field_list[0]].take_log = False sc = Scene() cam = sc.add_camera(ds) cam.resolution = (512, 512) vr = VolumeSource(dd, field=ds.field_list[0]) vr.transfer_function.clear() vr.transfer_function.grey_opacity = True vr.transfer_function.map_to_colormap(0.0, 1.0, scale=10.0, colormap="Reds") sc.add_source(vr) cam.set_width(1.8 * ds.domain_width) cam.lens.setup_box_properties(cam) # Create Arbitrary Z-buffer empty = cam.lens.new_image(cam) z = np.empty(empty.shape[:2], dtype="float64") # Let's put a blue plane right through the center z[:] = cam.width[2] / 2.0 empty[:, :, 2] = 1.0 # Set blue to 1's empty[:, :, 3] = 1.0 # Set alpha to 1's zbuffer = ZBuffer(empty, z) zsource = OpaqueSource() zsource.set_zbuffer(zbuffer) sc.add_source(zsource) im = sc.render() im.write_png("composite.png")
def doit(plotfile): ds = yt.load(plotfile) ds.periodicity = (True, True, True) field = ('boxlib', 'radial_velocity') ds._get_field_info(field).take_log = False sc = Scene() # add a volume: select a sphere center = (0, 0, 0) R = (5.e8, 'cm') dd = ds.sphere(center, R) vol = VolumeSource(dd, field=field) vol.use_ghost_zones = True sc.add_source(vol) # transfer function vals = [-5.e6, -2.5e6, -1.25e6, 1.25e6, 2.5e6, 5.e6] sigma = 3.e5 tf = yt.ColorTransferFunction((min(vals), max(vals))) tf.clear() cm = "coolwarm" for v in vals: tf.sample_colormap(v, sigma**2, colormap=cm) #, alpha=0.2) sc.get_source(0).transfer_function = tf cam = sc.add_camera(ds, lens_type="perspective") cam.resolution = (1280, 720) cam.position = 1.5 * ds.arr(np.array([5.e8, 5.e8, 5.e8]), 'cm') # look toward the center -- we are dealing with an octant center = ds.domain_left_edge normal = (center - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0., 0., 1.]) cam.set_width(ds.domain_width) #sc.annotate_axes() #sc.annotate_domain(ds) sc.render() sc.save("subchandra_test.png", sigma_clip=6.0) sc.save_annotated( "subchandra_test_annotated.png", text_annotate=[[(0.05, 0.05), "t = {}".format(ds.current_time.d), dict(horizontalalignment="left")], [(0.5, 0.95), "Maestro simulation of He convection on a white dwarf", dict(color="y", fontsize="24", horizontalalignment="center")]])
def test_points_vr(self): ds = fake_random_ds(64) dd = ds.sphere(ds.domain_center, 0.45 * ds.domain_width[0]) ds.field_info[ds.field_list[0]].take_log = False sc = Scene() cam = sc.add_camera(ds) cam.resolution = (512, 512) vr = VolumeSource(dd, field=ds.field_list[0]) vr.transfer_function.clear() vr.transfer_function.grey_opacity = False vr.transfer_function.map_to_colormap(0.0, 1.0, scale=10., colormap="Reds") sc.add_source(vr) cam.set_width(1.8 * ds.domain_width) cam.lens.setup_box_properties(cam) # DRAW SOME POINTS npoints = 1000 vertices = np.random.random([npoints, 3]) colors = np.random.random([npoints, 4]) colors[:, 3] = 0.10 points_source = PointSource(vertices, colors=colors) sc.add_source(points_source) im = sc.render() im.write_png("points.png") return im
def test_perspective_lens(self): sc = Scene() cam = sc.add_camera(self.ds, lens_type="perspective") cam.position = self.ds.arr(np.array([1.0, 1.0, 1.0]), "code_length") vol = VolumeSource(self.ds, field=self.field) tf = vol.transfer_function tf.grey_opacity = True sc.add_source(vol) sc.save("test_perspective_%s.png" % self.field[1], sigma_clip=6.0)
def test_spherical_lens(self): sc = Scene() cam = sc.add_camera(self.ds, lens_type="spherical") cam.resolution = [256, 128] cam.position = self.ds.arr(np.array([0.6, 0.5, 0.5]), "code_length") vol = VolumeSource(self.ds, field=self.field) tf = vol.transfer_function tf.grey_opacity = True sc.add_source(vol) sc.save("test_spherical_%s.png" % self.field[1], sigma_clip=6.0)
def test_stereoperspective_lens(self): sc = Scene() cam = sc.add_camera(self.ds, lens_type="stereo-perspective") cam.resolution = [256, 128] cam.position = self.ds.arr(np.array([0.7, 0.7, 0.7]), "code_length") vol = create_volume_source(self.ds, field=self.field) tf = vol.transfer_function tf.grey_opacity = True sc.add_source(vol) sc.save(f"test_stereoperspective_{self.field[1]}.png", sigma_clip=6.0)
def test_plane_lens(self): dd = self.ds.sphere(self.ds.domain_center, self.ds.domain_width[0] / 10) sc = Scene() cam = sc.add_camera(dd, lens_type="plane-parallel") cam.set_width(self.ds.domain_width * 1e-2) v, c = self.ds.find_max("density") vol = create_volume_source(dd, field=self.field) tf = vol.transfer_function tf.grey_opacity = True sc.add_source(vol) sc.save(f"test_plane_{self.field[1]}.png", sigma_clip=6.0)
def test_spherical_lens(self): sc = Scene() cam = sc.add_camera(self.ds, lens_type='spherical') cam.resolution = [512, 256] cam.position = self.ds.arr(np.array([0.6, 0.5, 0.5]), 'code_length') vol = VolumeSource(self.ds, field=self.field) tf = vol.transfer_function tf.grey_opacity = True sc.add_source(vol) sc.render() sc.save('test_spherical_%s.png' % self.field[1], sigma_clip=6.0)
def test_stereoperspective_lens(self): sc = Scene() cam = sc.add_camera(self.ds, lens_type='stereo-perspective') cam.resolution = [1024, 512] cam.position = self.ds.arr(np.array([0.7, 0.7, 0.7]), 'code_length') vol = VolumeSource(self.ds, field=self.field) tf = vol.transfer_function tf.grey_opacity = True sc.add_source(vol) sc.render() sc.save('test_stereoperspective_%s.png' % self.field[1], sigma_clip=6.0)
def doit(plotfile): ds = yt.load(plotfile) ds.periodicity = (True, True, True) cm = "coolwarm" field = ('boxlib', 'radial_velocity') ds._get_field_info(field).take_log = False sc = Scene() # add a volume: select a sphere #center = (0, 0, 0) #R = (5.e8, 'cm') #dd = ds.sphere(center, R) vol = VolumeSource(ds, field=field) sc.add_source(vol) # transfer function vals = [-5.e5, -2.5e5, -1.25e5, 1.25e5, 2.5e5, 5.e5] sigma = 3.e4 tf = yt.ColorTransferFunction((min(vals), max(vals))) tf.clear() cm = "coolwarm" for v in vals: tf.sample_colormap(v, sigma**2, colormap=cm) #, alpha=0.2) sc.get_source(0).transfer_function = tf cam = sc.add_camera(ds, lens_type="perspective") cam.resolution = (1080, 1080) cam.position = 1.0 * ds.domain_right_edge # look toward the center -- we are dealing with an octant center = ds.domain_left_edge normal = (center - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0., 0., 1.]) cam.set_width(ds.domain_width) sc.camera = cam #sc.annotate_axes(alpha=0.05) #sc.annotate_domain(ds, color=np.array([0.05, 0.05, 0.05, 0.05])) #sc.annotate_grids(ds, alpha=0.05) sc.render() sc.save("{}_radvel".format(plotfile), sigma_clip=4.0)
def test_stereospherical_lens(self): w = (self.ds.domain_width).in_units("code_length") w = self.ds.arr(w, "code_length") sc = Scene() cam = sc.add_camera(self.ds, lens_type="stereo-spherical") cam.resolution = [256, 256] cam.position = self.ds.arr(np.array([0.6, 0.5, 0.5]), "code_length") vol = create_volume_source(self.ds, field=self.field) tf = vol.transfer_function tf.grey_opacity = True sc.add_source(vol) sc.save(f"test_stereospherical_{self.field[1]}.png", sigma_clip=6.0)
def test_fisheye_lens(self): dd = self.ds.sphere(self.ds.domain_center, self.ds.domain_width[0] / 10) sc = Scene() cam = sc.add_camera(dd, lens_type="fisheye") cam.lens.fov = 360.0 cam.set_width(self.ds.domain_width) v, c = self.ds.find_max("density") cam.set_position(c - 0.0005 * self.ds.domain_width) vol = create_volume_source(dd, field=self.field) tf = vol.transfer_function tf.grey_opacity = True sc.add_source(vol) sc.save(f"test_fisheye_{self.field[1]}.png", sigma_clip=6.0)
def test_plane_lens(self): dd = self.ds.sphere(self.ds.domain_center, self.ds.domain_width[0] / 10) sc = Scene() cam = sc.add_camera(dd, lens_type='plane-parallel') cam.set_width(self.ds.domain_width * 1e-2) v, c = self.ds.find_max('density') vol = VolumeSource(dd, field=self.field) tf = vol.transfer_function tf.grey_opacity = True sc.add_source(vol) sc.render() sc.save('test_plane_%s.png' % self.field[1], sigma_clip=6.0)
def test_fisheye_lens(self): dd = self.ds.sphere(self.ds.domain_center, self.ds.domain_width[0] / 10) sc = Scene() cam = sc.add_camera(dd, lens_type='fisheye') cam.lens.fov = 360.0 cam.set_width(self.ds.domain_width) v, c = self.ds.find_max('density') cam.set_position(c - 0.0005 * self.ds.domain_width) vol = VolumeSource(dd, field=self.field) tf = vol.transfer_function tf.grey_opacity = True sc.add_source(vol) sc.render() sc.save('test_fisheye_%s.png' % self.field[1], sigma_clip=6.0)
def composite_mesh_render(engine): ytcfg["yt", "ray_tracing_engine"] = engine ds = data_dir_load(hex8) sc = Scene() cam = sc.add_camera(ds) cam.focus = ds.arr([0.0, 0.0, 0.0], 'code_length') cam.set_position(ds.arr([-3.0, 3.0, -3.0], 'code_length'), ds.arr([0.0, -1.0, 0.0], 'dimensionless')) cam.set_width = ds.arr([8.0, 8.0, 8.0], 'code_length') cam.resolution = (800, 800) ms1 = MeshSource(ds, ('connect1', 'diffused')) ms2 = MeshSource(ds, ('connect2', 'diffused')) sc.add_source(ms1) sc.add_source(ms2) im = sc.render() return compare(ds, im, "%s_composite_mesh_render" % engine)
def surface_mesh_render(): images = [] ds = fake_tetrahedral_ds() for field in ds.field_list: sc = Scene() sc.add_source(MeshSource(ds, field)) sc.add_camera() im = sc.render() images.append(im) ds = fake_hexahedral_ds() for field in ds.field_list: sc = Scene() sc.add_source(MeshSource(ds, field)) sc.add_camera() im = sc.render() images.append(im) return images
def test_composite_vr(self): ds = fake_random_ds(64) dd = ds.sphere(ds.domain_center, 0.45 * ds.domain_width[0]) ds.field_info[ds.field_list[0]].take_log = False sc = Scene() cam = sc.add_camera(ds) cam.resolution = (512, 512) vr = create_volume_source(dd, field=ds.field_list[0]) vr.transfer_function.clear() vr.transfer_function.grey_opacity = True vr.transfer_function.map_to_colormap(0.0, 1.0, scale=3.0, colormap="Reds") sc.add_source(vr) cam.set_width(1.8 * ds.domain_width) cam.lens.setup_box_properties(cam) # DRAW SOME LINES npoints = 100 vertices = np.random.random([npoints, 2, 3]) colors = np.random.random([npoints, 4]) colors[:, 3] = 0.10 box_source = BoxSource(ds.domain_left_edge, ds.domain_right_edge, color=[1.0, 1.0, 1.0, 1.0]) sc.add_source(box_source) LE = ds.domain_left_edge + np.array([0.1, 0.0, 0.3 ]) * ds.domain_left_edge.uq RE = ds.domain_right_edge - np.array([0.1, 0.2, 0.3 ]) * ds.domain_left_edge.uq color = np.array([0.0, 1.0, 0.0, 0.10]) box_source = BoxSource(LE, RE, color=color) sc.add_source(box_source) line_source = LineSource(vertices, colors) sc.add_source(line_source) im = sc.render() im = ImageArray(im.d) im.write_png("composite.png") return im
def doit(plotfile, fname): ds = yt.load(plotfile) cm = "gist_rainbow" if fname == "vz": field = ('gas', 'velocity_z') use_log = False vals = [-1.e7, -5.e6, 5.e6, 1.e7] sigma = 5.e5 fmt = None cm = "coolwarm" elif fname == "magvel": field = ('gas', 'velocity_magnitude') use_log = True vals = [1.e5, 3.16e5, 1.e6, 3.16e6, 1.e7] sigma = 0.1 elif fname == "enucdot": field = ('boxlib', 'enucdot') use_log = True vals = [1.e16, 3.162e16, 1.e17, 3.162e17, 1.e18] vals = list(10.0**numpy.array([16.5, 17.0, 17.5, 18.0, 18.5])) sigma = 0.05 fmt = "%.3g" # this is hackish, but there seems to be no better way to set whether # you are rendering logs ds._get_field_info(field).take_log = use_log # hack periodicity ds.periodicity = (True, True, True) mi = min(vals) ma = max(vals) if use_log: mi, ma = np.log10(mi), np.log10(ma) print mi, ma # setup the scene and camera sc = Scene() cam = Camera(ds, lens_type="perspective") # Set up the camera parameters: center, looking direction, width, resolution center = (ds.domain_right_edge + ds.domain_left_edge)/2.0 xmax, ymax, zmax = ds.domain_right_edge # this shows something face on c = np.array([-8.0*xmax, center[1], center[2]]) # the normal vector should be pointing back through the center L = center.d - c L = L/np.sqrt((L**2).sum()) north_vector=[0.0,0.0,1.0] cam.position = ds.arr(c) cam.switch_orientation(normal_vector=L, north_vector=north_vector) cam.set_width(ds.domain_width*4) cam.resolution = (720,720) # create the volume source vol = VolumeSource(ds, field=field) # Instantiate the ColorTransferfunction. tf = vol.transfer_function tf = ColorTransferFunction((mi, ma)) #tf.grey_opacity=True for v in vals: if use_log: tf.sample_colormap(math.log10(v), sigma**2, colormap=cm) #, alpha=0.2) else: print v tf.sample_colormap(v, sigma**2, colormap=cm) #, alpha=0.2) sc.camera = cam sc.add_source(vol) sc.render("test_perspective.png", clip_ratio=6.0)
def doit(plotfile): ds = yt.load(plotfile) ds.periodicity = (True, True, True) field = ('boxlib', 'density') ds._get_field_info(field).take_log = True sc = Scene() # add a volume: select a sphere vol = VolumeSource(ds, field=field) vol.use_ghost_zones = True sc.add_source(vol) # transfer function vals = [-1, 0, 1, 2, 3, 4, 5, 6, 7] #vals = [0.1, 1.0, 10, 100., 1.e4, 1.e5, 1.e6, 1.e7] sigma = 0.1 tf = yt.ColorTransferFunction((min(vals), max(vals))) tf.clear() cm = "coolwarm" cm = "spectral" for v in vals: if v < 3: alpha = 0.1 else: alpha = 0.5 tf.sample_colormap(v, sigma**2, colormap=cm, alpha=alpha) sc.get_source(0).transfer_function = tf cam = sc.add_camera(ds, lens_type="perspective") cam.resolution = (1920, 1080) cam.position = 1.5 * ds.arr(np.array([0.0, 5.e9, 5.e9]), 'cm') # look toward the center -- we are dealing with an octant center = 0.5 * (ds.domain_left_edge + ds.domain_right_edge) normal = (center - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0., 0., 1.]) cam.set_width(ds.domain_width) #sc.annotate_axes() #sc.annotate_domain(ds) pid = plotfile.split("plt")[1] sc.render() sc.save("wdmerger_{}_new.png".format(pid), sigma_clip=6.0) sc.save_annotated( "wdmerger_annotated_{}_new.png".format(pid), text_annotate= [[(0.05, 0.05), "t = {:.3f} s".format(float(ds.current_time.d)), dict(horizontalalignment="left")], [(0.5, 0.95), "Castro simulation of merging white dwarfs (0.6 $M_\odot$ + 0.9 $M_\odot$)", dict(color="y", fontsize="22", horizontalalignment="center")], [(0.95, 0.05), "M. Katz et al.", dict(color="w", fontsize="16", horizontalalignment="right")]])
tfh.build_transfer_function() tfh.tf.add_layers(nlayers, colormap='Reds', w=mag_vel_sigma**2, mi=log_min, ma=log_max, alpha=alphavec) tfh.plot('{}_tfun_neg_vrad.png'.format(args.infile)) so_neg_vrad.transfer_function = tfh.tf if args.dry_run: exit() # Add sources to scene #sc.add_source(so_enuc) sc.add_source(so_pos_vrad) sc.add_source(so_neg_vrad) # Add camera to scene sc.add_camera() # Set camera properties sc.camera.focus = ds.domain_center sc.camera.resolution = args.resolution sc.camera.north_vector = yt.YTArray(args.camera_north, 'cm') sc.camera.position = ds.domain_center + yt.YTArray(args.camera_position, 'cm') * args.rup sc.camera.zoom(args.zoom) # Annotate domain - draw boundaries if args.drawdomain:
def test_lazy_volume_source_construction(self): sc = Scene() source = create_volume_source(self.ds.all_data(), "density") assert source._volume is None assert source._transfer_function is None source.tfh.bounds = (0.1, 1) source.set_log(False) assert not source.log_field assert source.transfer_function.x_bounds == [0.1, 1] assert source._volume is None source.set_log(True) assert source.log_field assert source.transfer_function.x_bounds == [-1, 0] assert source._volume is None source.transfer_function = None source.tfh.bounds = None ad = self.ds.all_data() np.testing.assert_allclose( source.transfer_function.x_bounds, np.log10(ad.quantities.extrema("density")), ) assert source.tfh.log == source.log_field source.set_field("velocity_x") source.set_log(False) assert source.transfer_function.x_bounds == list( ad.quantities.extrema("velocity_x") ) assert source._volume is None source.set_field("density") assert source.volume is not None assert not source.volume._initialized assert source.volume.fields is None del source.volume assert source._volume is None sc.add_source(source) sc.add_camera() sc.render() assert source.volume is not None assert source.volume._initialized assert source.volume.fields == [("gas", "density")] assert source.volume.log_fields == [True] source.set_field("velocity_x") source.set_log(False) sc.render() assert source.volume is not None assert source.volume._initialized assert source.volume.fields == [("gas", "velocity_x")] assert source.volume.log_fields == [False]
def doit(plotfile): ds = yt.load(plotfile) ds.periodicity = (True, True, True) field = ('boxlib', 'density') ds._get_field_info(field).take_log = True sc = Scene() # add a volume: select a sphere vol = VolumeSource(ds, field=field) vol.use_ghost_zones = True sc.add_source(vol) # transfer function vals = [-1, 0, 1, 2, 3, 4, 5, 6, 7] #vals = [0.1, 1.0, 10, 100., 1.e4, 1.e5, 1.e6, 1.e7] sigma = 0.1 tf = yt.ColorTransferFunction((min(vals), max(vals))) tf.clear() cm = "coolwarm" cm = "spectral" for v in vals: if v < 3: alpha = 0.1 else: alpha = 0.5 tf.sample_colormap(v, sigma**2, colormap=cm, alpha=alpha) sc.get_source(0).transfer_function = tf # for spherical, youtube recommends an "equirectangular" aspect ratio # (2:1), suggested resolution of 8192 x 4096 # see: https://support.google.com/youtube/answer/6178631?hl=en # # also see: http://yt-project.org/docs/dev/cookbook/complex_plots.html#various-lens-types-for-volume-rendering # the 2:1 is 2*pi in phi and pi in theta cam = sc.add_camera(ds, lens_type="spherical") #cam.resolution = (8192, 4096) cam.resolution = (4096, 2048) # look toward the +x initially cam.focus = ds.arr(np.array([ds.domain_left_edge[0], 0.0, 0.0]), 'cm') # center of the domain -- eventually we might want to do the # center of mass cam.position = ds.arr(np.array([0.0, 0.0, 0.0]), 'cm') # define up cam.north_vector = np.array([0., 0., 1.]) normal = (cam.focus - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0., 0., 1.]) # there is no such thing as a camera width -- the entire volume is rendered #cam.set_width(ds.domain_width) #sc.annotate_axes() #sc.annotate_domain(ds) pid = plotfile.split("plt")[1] sc.render() sc.save("wdmerger_{}_spherical.png".format(pid), sigma_clip=6.0)
def doit(plotfile): ds = yt.load(plotfile) ds.periodicity = (True, True, True) cm = "coolwarm" field = ('boxlib', 'density') ds._get_field_info(field).take_log = True sc = Scene() # add a volume: select a sphere vol = VolumeSource(ds, field=field) sc.add_source(vol) # transfer function vals = [-1, 0, 1, 2, 4, 5, 6, 7] #vals = [0.1, 1.0, 10, 100., 1.e4, 1.e5, 1.e6, 1.e7] sigma = 0.1 tf = yt.ColorTransferFunction((min(vals), max(vals))) tf.clear() cm = "coolwarm" cm = "spectral" for v in vals: if v < 4: alpha = 0.1 else: alpha = 0.5 tf.sample_colormap(v, sigma**2, colormap=cm, alpha=alpha) sc.get_source(0).transfer_function = tf cam = Camera(ds, lens_type="perspective") cam.resolution = (1280, 720) cam.position = 1.5*ds.arr(np.array([0.0, 5.e9, 5.e9]), 'cm') # look toward the center -- we are dealing with an octant center = 0.5*(ds.domain_left_edge + ds.domain_right_edge) normal = (center - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0., 0., 1.]) cam.set_width(ds.domain_width) sc.camera = cam #sc.annotate_axes() #sc.annotate_domain(ds) pid = plotfile.split("plt")[1] sc.render() sc.save("wdmerger_{}.png".format(pid), sigma_clip=6.0) sc.save_annotated("wdmerger_annotated_{}.png".format(pid), text_annotate=[[(0.05, 0.05), "t = {:.3f}".format(float(ds.current_time.d)), dict(horizontalalignment="left")], [(0.5,0.95), "Castro simulation of merging white dwarfs", dict(color="y", fontsize="24", horizontalalignment="center")]])
def doit(plotfile): ds = yt.load(plotfile) ds.periodicity = (True, True, True) field = ('gas', 'velocity_z') ds._get_field_info(field).take_log = False sc = Scene() # add a volume: select a sphere #center = (0, 0, 0) #R = (5.e8, 'cm') #dd = ds.sphere(center, R) vol = VolumeSource(ds, field=field) vol.use_ghost_zones = True sc.add_source(vol) # transfer function vals = [-1.e7, -5.e6, 5.e6, 1.e7] sigma = 5.e5 tf = yt.ColorTransferFunction((min(vals), max(vals))) tf.clear() cm = "coolwarm" for v in vals: tf.sample_colormap(v, sigma**2, colormap=cm) #, alpha=0.2) sc.get_source(0).transfer_function = tf cam = sc.add_camera(ds, lens_type="perspective") cam.resolution = (1920, 1080) center = 0.5*(ds.domain_left_edge + ds.domain_right_edge) cam.position = [2.5*ds.domain_right_edge[0], 2.5*ds.domain_right_edge[1], center[2]+0.25*ds.domain_right_edge[2]] # look toward the center -- we are dealing with an octant normal = (center - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0., 0., 1.]) cam.set_width(ds.domain_width) sc.camera = cam #sc.annotate_axes(alpha=0.05) #sc.annotate_domain(ds, color=np.array([0.05, 0.05, 0.05, 0.05])) #sc.annotate_grids(ds, alpha=0.05) sc.render() sc.save("{}_radvel".format(plotfile), sigma_clip=4.0) sc.save_annotated("{}_radvel_annotated.png".format(plotfile), sigma_clip=4.0, text_annotate=[[(0.05, 0.05), "t = {}".format(ds.current_time.d), dict(horizontalalignment="left")], [(0.5,0.95), "Maestro simulation of convection in a mixed H/He XRB", dict(color="y", fontsize="24", horizontalalignment="center")]])
tfh.set_field(('boxlib', 'circum_velocity')) tfh.set_log(True) tfh.grey_opacity = False tfh.set_bounds(mag_vel_bounds) tfh.build_transfer_function() tfh.tf.add_layers(nlayers, colormap='viridis', w=mag_vel_sigma**2, mi=1, ma=6, alpha=alphavec) tfh.plot('{}_tfun_circum_vel.png'.format(args.infile)) so_circum_vel.transfer_function = tfh.tf # Add sources to scene sc.add_source(so_circum_vel) # Add camera to scene sc.add_camera() # Set camera properties sc.camera.focus = ds.domain_center sc.camera.resolution = args.resolution sc.camera.north_vector = [0, 0, 1] sc.camera.position = ds.domain_center + [ 1.0, 1.0, 1.0 ] * ds.domain_width * args.rup / 5.12e8 sc.camera.zoom(2.5 * args.zoom) # Annotate domain - draw boundaries if args.drawdomain:
def doit(plotfile): ds = yt.load(plotfile) ds.periodicity = (True, True, True) field = ('boxlib', 'radial_velocity') ds._get_field_info(field).take_log = False sc = Scene() # add a volume: select a sphere #center = (0, 0, 0) #R = (5.e8, 'cm') #dd = ds.sphere(center, R) vol = VolumeSource(ds, field=field) vol.use_ghost_zones = True sc.add_source(vol) # transfer function vals = [-5.e6, -2.5e6, -1.25e6, 1.25e6, 2.5e6, 5.e6] sigma = 3.e5 tf = yt.ColorTransferFunction((min(vals), max(vals))) tf.clear() cm = "coolwarm" for v in vals: tf.sample_colormap(v, sigma**2, colormap=cm) #, alpha=0.2) sc.get_source(0).transfer_function = tf cam = sc.add_camera(ds, lens_type="perspective") cam.resolution = (1080, 1080) cam.position = 1.0*ds.domain_right_edge # look toward the center -- we set this depending on whether the plotfile # indicates it was an octant try: octant = ds.parameters["octant"] except: octant = True if octant: center = ds.domain_left_edge else: center = 0.5*(ds.domain_left_edge + ds.domain_right_edge) # unit vector connecting center and camera normal = (center - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0., 0., 1.]) cam.set_width(ds.domain_width) #sc.annotate_axes(alpha=0.05) #sc.annotate_domain(ds, color=np.array([0.05, 0.05, 0.05, 0.05])) #sc.annotate_grids(ds, alpha=0.05) sc.render() sc.save("{}_radvel".format(plotfile), sigma_clip=6.0) sc.save_annotated("{}_radvel_annotated.png".format(plotfile), text_annotate=[[(0.05, 0.05), "t = {}".format(ds.current_time.d), dict(horizontalalignment="left")], [(0.5,0.95), "Maestro simulation of He convection on a white dwarf", dict(color="y", fontsize="24", horizontalalignment="center")]])
def doit(plotfile): ds = CastroDataset(plotfile) ds._periodicity = (True, True, True) field = ('boxlib', 'enuc') ds._get_field_info(field).take_log = True sc = Scene() # add a volume: select a sphere #center = (0, 0, 0) #R = (5.e8, 'cm') #dd = ds.sphere(center, R) vol = create_volume_source(ds.all_data(), field=field) sc.add_source(vol) # transfer function vals = [16.5, 17.0, 17.5, 18.0, 18.5, 19.0, 19.5] sigma = 0.1 tf = yt.ColorTransferFunction((min(vals), max(vals))) tf.clear() cmap = "viridis" for v in vals: if v < 19.0: alpha = 0.25 else: alpha = 0.75 tf.sample_colormap(v, sigma**2, alpha=alpha, colormap=cmap) sc.get_source(0).transfer_function = tf cam = sc.add_camera(ds, lens_type="perspective") cam.resolution = (1920, 1280) # view 1 cam.position = [ 0.75 * ds.domain_right_edge[0], 0.5 * (ds.domain_left_edge[1] + ds.domain_right_edge[1]), ds.domain_right_edge[2] ] # + 0.25 * (ds.domain_right_edge[2] - ds.domain_left_edge[2])] # look toward the center center = 0.5 * (ds.domain_left_edge + ds.domain_right_edge) # set the center in the vertical direction to be the height of the underlying base layer center[-1] = 2000 * cm normal = (center - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0., 0., 1.]) cam.set_width(3 * ds.domain_width) cam.zoom(3.0) sc.camera = cam sc.save_annotated( "{}_Hnuc_annotated_side.png".format(plotfile), text_annotate=[[(0.05, 0.05), "t = {}".format(ds.current_time.d), dict(horizontalalignment="left")], [(0.5, 0.95), "Castro simulation of XRB flame spreading", dict(color="y", fontsize="24", horizontalalignment="center")]]) # view 2 dx = ds.domain_right_edge[0] - ds.domain_left_edge[0] cam.position = [ 0.5 * (ds.domain_left_edge[0] + ds.domain_right_edge[0]) + 0.0001 * dx, 0.5 * (ds.domain_left_edge[1] + ds.domain_right_edge[1]), ds.domain_right_edge[2] ] # + 0.25 * (ds.domain_right_edge[2] - ds.domain_left_edge[2])] # look toward the center center = 0.5 * (ds.domain_left_edge + ds.domain_right_edge) # set the center in the vertical direction to be the height of the underlying base layer center[-1] = 2000 * cm normal = (center - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0., 0., 1.]) cam.set_width(3 * ds.domain_width) cam.zoom(0.6) sc.camera = cam sc.save_annotated( "{}_Hnuc_annotated_top.png".format(plotfile), text_annotate=[[(0.05, 0.05), "t = {}".format(ds.current_time.d), dict(horizontalalignment="left")], [(0.5, 0.95), "Castro simulation of XRB flame spreading", dict(color="y", fontsize="24", horizontalalignment="center")]])
import yt from yt.visualization.volume_rendering.api import Scene, VolumeSource filePath = "Sedov_3d/sedov_hdf5_chk_0003" ds = yt.load(filePath) ds.periodicity = (True, True, True) sc = Scene() # set up camera cam = sc.add_camera(ds, lens_type="perspective") cam.resolution = [400, 400] cam.position = ds.arr([1, 1, 1], "cm") cam.switch_orientation() # add rendering of density field dens = VolumeSource(ds, field="dens") dens.use_ghost_zones = True sc.add_source(dens) sc.save("density.png", sigma_clip=6) # add rendering of x-velocity field vel = VolumeSource(ds, field="velx") vel.use_ghost_zones = True sc.add_source(vel) sc.save("density_any_velocity.png", sigma_clip=6)
def vol_render_density(outfile, ds): """Volume render the density given a yt dataset.""" import numpy as np import yt import matplotlib matplotlib.use('agg') from yt.visualization.volume_rendering.api import Scene, VolumeSource import matplotlib.pyplot as plt ds.periodicity = (True, True, True) field = ('boxlib', 'density') ds._get_field_info(field).take_log = True sc = Scene() # Add a volume: select a sphere vol = VolumeSource(ds, field=field) vol.use_ghost_zones = True sc.add_source(vol) # Transfer function vals = [-1, 0, 1, 2, 3, 4, 5, 6, 7] sigma = 0.1 tf = yt.ColorTransferFunction((min(vals), max(vals))) tf.clear() cm = "spectral" for v in vals: if v < 3: alpha = 0.1 else: alpha = 0.5 tf.sample_colormap(v, sigma**2, colormap=cm, alpha=alpha) sc.get_source(0).transfer_function = tf cam = sc.add_camera(ds, lens_type="perspective") cam.resolution = (1920, 1080) center = 0.5 * (ds.domain_left_edge + ds.domain_right_edge) width = ds.domain_width # Set the camera so that we're looking down on the xy plane from a 45 # degree angle. We reverse the y-coordinate since yt seems to use the # opposite orientation convention to us (where the primary should be # on the left along the x-axis). We'll scale the camera position based # on a zoom factor proportional to the width of the domain. zoom_factor = 0.75 cam_position = np.array([ center[0], center[1] - zoom_factor * width[1], center[2] + zoom_factor * width[2] ]) cam.position = zoom_factor * ds.arr(cam_position, 'cm') # Set the normal vector so that we look toward the center. normal = (center - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0.0, 0.0, 1.0]) cam.set_width(width) # Render the image. sc.render() # Save the image without annotation. sc.save(outfile, sigma_clip=6.0) # Save the image with a colorbar. sc.save_annotated(outfile.replace(".png", "_colorbar.png"), sigma_clip=6.0) # Save the image with a colorbar and the current time. sc.save_annotated(outfile.replace(".png", "_colorbar_time.png"), sigma_clip=6.0, text_annotate=[[ (0.05, 0.925), "t = {:.2f} s".format(float(ds.current_time.d)), dict(horizontalalignment="left", fontsize="20") ]])
def test_orientation(): ds = fake_vr_orientation_test_ds() sc = Scene() vol = create_volume_source(ds, field=("gas", "density")) sc.add_source(vol) tf = vol.transfer_function tf = ColorTransferFunction((0.1, 1.0)) tf.sample_colormap(1.0, 0.01, colormap="coolwarm") tf.sample_colormap(0.8, 0.01, colormap="coolwarm") tf.sample_colormap(0.6, 0.01, colormap="coolwarm") tf.sample_colormap(0.3, 0.01, colormap="coolwarm") n_frames = 1 orientations = [[-0.3, -0.1, 0.8]] theta = np.pi / n_frames decimals = 12 test_name = "vr_orientation" for lens_type in [ "perspective", # final name VRImageComparison_UniformGridData_vr_pitch_plane-parallel_0002 # deactivated because of a random failure since numpy 0.20.0 and 0.20.1 # "plane-parallel" ]: frame = 0 cam = sc.add_camera(ds, lens_type=lens_type) cam.resolution = (1000, 1000) cam.position = ds.arr(np.array([-4.0, 0.0, 0.0]), "code_length") cam.switch_orientation(normal_vector=[1.0, 0.0, 0.0], north_vector=[0.0, 0.0, 1.0]) cam.set_width(ds.domain_width * 2.0) desc = "%s_%04d" % (lens_type, frame) test1 = VRImageComparisonTest(sc, ds, desc, decimals) test1.answer_name = test_name yield test1 for _ in range(n_frames): frame += 1 center = ds.arr([0, 0, 0], "code_length") cam.yaw(theta, rot_center=center) desc = "yaw_%s_%04d" % (lens_type, frame) test2 = VRImageComparisonTest(sc, ds, desc, decimals) test2.answer_name = test_name yield test2 for _ in range(n_frames): frame += 1 theta = np.pi / n_frames center = ds.arr([0, 0, 0], "code_length") cam.pitch(theta, rot_center=center) desc = "pitch_%s_%04d" % (lens_type, frame) test3 = VRImageComparisonTest(sc, ds, desc, decimals) test3.answer_name = test_name yield test3 for _ in range(n_frames): frame += 1 theta = np.pi / n_frames center = ds.arr([0, 0, 0], "code_length") cam.roll(theta, rot_center=center) desc = "roll_%s_%04d" % (lens_type, frame) test4 = VRImageComparisonTest(sc, ds, desc, decimals) test4.answer_name = test_name yield test4 center = [0.5, 0.5, 0.5] width = [1.0, 1.0, 1.0] for i, orientation in enumerate(orientations): image = off_axis_projection(ds, center, orientation, width, 512, "density", no_ghost=False) def offaxis_image_func(filename_prefix): return image.write_image(filename_prefix) test5 = GenericImageTest(ds, offaxis_image_func, decimals) test5.prefix = f"oap_orientation_{i}" test5.answer_name = test_name yield test5
tf.grey_opacity = True # Plane-parallel lens cam = sc.add_camera(ds, lens_type='plane-parallel') # Set the resolution of tbe final projection. cam.resolution = [250, 250] # Set the location of the camera to be (x=0.2, y=0.5, z=0.5) # For plane-parallel lens, the location info along the normal_vector (here # is x=0.2) is ignored. cam.position = ds.arr(np.array([0.2, 0.5, 0.5]), 'code_length') # Set the orientation of the camera. cam.switch_orientation(normal_vector=normal_vector, north_vector=north_vector) # Set the width of the camera, where width[0] and width[1] specify the length and # height of final projection, while width[2] in plane-parallel lens is not used. cam.set_width(ds.domain_width * 0.5) sc.add_source(vol) sc.render() sc.save('lens_plane-parallel.png', sigma_clip=6.0) # Perspective lens cam = sc.add_camera(ds, lens_type='perspective') cam.resolution = [250, 250] # Standing at (x=0.2, y=0.5, z=0.5), we look at the area of x>0.2 (with some open angle # specified by camera width) along the positive x direction. cam.position = ds.arr([0.2, 0.5, 0.5], 'code_length') cam.switch_orientation(normal_vector=normal_vector, north_vector=north_vector) # Set the width of the camera, where width[0] and width[1] specify the length and # height of the final projection, while width[2] specifies the distance between the # camera and the final image. cam.set_width(ds.domain_width * 0.5) sc.add_source(vol)
so_pos_vrad.transfer_function = tfh.tf tfh = TransferFunctionHelper(ds) tfh.set_field('neg_radial_velocity') tfh.set_log(True) tfh.grey_opacity = False tfh.set_bounds(mag_vel_bounds) tfh.build_transfer_function() nlayers = 3 tfh.tf.add_layers(nlayers, colormap='Reds', w=mag_vel_sigma**2, mi=4, ma=6, alpha=np.logspace(-2,0,nlayers)) tfh.plot('{}_tfun_neg_vrad.png'.format(args.infile)) so_neg_vrad.transfer_function = tfh.tf # Add sources to scene #sc.add_source(so_enuc) sc.add_source(so_pos_vrad) sc.add_source(so_neg_vrad) # Add camera to scene sc.add_camera() # Set camera properties sc.camera.focus = ds.domain_center sc.camera.resolution = 800 sc.camera.north_vector = [0, 0, 1] sc.camera.position = ds.domain_center + [1.0, 1.0, 1.0] * ds.domain_width * args.rup/5.12e8 sc.camera.zoom(2.5*args.zoom) # Annotate domain - draw boundaries if args.drawdomain: sc.annotate_domain(ds, color=[1, 1, 1, 0.01])
tfh = TransferFunctionHelper(ds) tfh.set_field('abs_ye_asymmetry') tfh.set_log(False) tfh.grey_opacity = False tfh.set_bounds(bounds) tfh.build_transfer_function() tfh.tf.add_layers(nlayers, colormap='octarine', w=sigma**2, alpha=alphavec) #tfh.plot('{}_tfun_ye_asym.png'.format(args.infile)) so.transfer_function = tfh.tf if args.dry_run: exit() # Add sources to scene sc.add_source(so) # Add camera to scene sc.add_camera() # Set camera properties sc.camera.focus = ds.domain_center sc.camera.resolution = args.resolution sc.camera.north_vector = yt.YTArray(args.camera_north, 'cm') sc.camera.position = ds.domain_center + yt.YTArray(args.camera_position, 'cm') * args.rup sc.camera.zoom(args.zoom) # Annotate domain - draw boundaries if args.drawdomain: sc.annotate_domain(ds, color=[1, 1, 1, 0.01])
tfh.set_field('neg_enucdot') mag_enuc_bounds = np.array([10.0**-(neg_maxv-3), 10.0**neg_maxv]) tfh.set_log(True) tfh.grey_opacity = False tfh.set_bounds(mag_enuc_bounds) tfh.build_transfer_function() nlayers = 10 tfh.tf.add_layers(nlayers, colormap='PiYG_r', w=mag_enuc_sigma**2, mi=neg_maxv-nlayers+1, ma=neg_maxv, alpha=rat_neg_pos*np.logspace(-2,0,nlayers)) try: tfh.plot('{}_tfun_neg_enucdot.png'.format(args.infile)) except: print('could not plot neg_enucdot transfer function.') so_neg_enuc.transfer_function = tfh.tf # Add sources to scene sc.add_source(so_pos_enuc) sc.add_source(so_neg_enuc) # Add camera to scene sc.add_camera() # Set camera properties sc.camera.focus = ds.domain_center sc.camera.resolution = 2048 sc.camera.north_vector = [0, 0, 1] sc.camera.position = ds.domain_center + [1.0, 1.0, 1.0] * ds.domain_width * args.rup/5.12e8 #sc.camera.zoom(2.5*args.zoom) # Annotate domain - draw boundaries if args.drawdomain: sc.annotate_domain(ds, color=[1, 1, 1, 0.2])
tfh = TransferFunctionHelper(ds) tfh.set_field(field) print(field) tfh.set_log(True) tfh.grey_opacity = False tfh.set_bounds(bounds) tfh.build_transfer_function() tfh.tf.add_layers(nlayers, colormap=args.colormap, w=sigma**2, alpha=alphavec) tfh.plot('{}_tfun_{}.png'.format(args.infile, field_short_name)) so.transfer_function = tfh.tf if args.dry_run: exit() # Add sources to scene sc.add_source(so) # Add camera to scene sc.add_camera() # Set camera properties sc.camera.focus = ds.domain_center sc.camera.resolution = args.resolution sc.camera.north_vector = yt.YTArray(args.camera_north, 'cm') sc.camera.position = ds.domain_center + yt.YTArray(args.camera_position, 'cm') * args.rup sc.camera.zoom(args.zoom) # Annotate domain - draw boundaries if args.drawdomain: sc.annotate_domain(ds, color=[1, 1, 1, 0.01])
alphavec = np.ones(nlayers) else: alphavec = np.logspace(-5,0,nlayers) tfh = TransferFunctionHelper(ds) tfh.set_field(('boxlib', 'circum_velocity')) tfh.set_log(True) tfh.grey_opacity = False tfh.set_bounds(mag_vel_bounds) tfh.build_transfer_function() tfh.tf.add_layers(nlayers, colormap='viridis', w=mag_vel_sigma**2, mi=1, ma=6, alpha=alphavec) tfh.plot('{}_tfun_circum_vel.png'.format(args.infile)) so_circum_vel.transfer_function = tfh.tf # Add sources to scene sc.add_source(so_circum_vel) # Add camera to scene sc.add_camera() # Set camera properties sc.camera.focus = ds.domain_center sc.camera.resolution = args.resolution sc.camera.north_vector = [0, 0, 1] sc.camera.position = ds.domain_center + [1.0, 1.0, 1.0] * ds.domain_width * args.rup/5.12e8 sc.camera.zoom(2.5*args.zoom) # Annotate domain - draw boundaries if args.drawdomain: sc.annotate_domain(ds, color=[1, 1, 1, 0.01])
def doit(plotfile): ds = yt.load(plotfile) ds.periodicity = (True, True, True) field = ('boxlib', 'radial_velocity') ds._get_field_info(field).take_log = False sc = Scene() # add a volume: select a sphere center = (0, 0, 0) R = (5.e8, 'cm') dd = ds.sphere(center, R) vol = VolumeSource(dd, field=field) vol.use_ghost_zones = True sc.add_source(vol) # transfer function vals = [-5.e6, -2.5e6, -1.25e6, 1.25e6, 2.5e6, 5.e6] sigma = 3.e5 tf = yt.ColorTransferFunction((min(vals), max(vals))) tf.clear() cm = "coolwarm" for v in vals: tf.sample_colormap(v, sigma**2, colormap=cm) #, alpha=0.2) sc.get_source(0).transfer_function = tf cam = sc.add_camera(ds, lens_type="perspective") cam.resolution = (1280, 720) cam.position = 1.5*ds.arr(np.array([5.e8, 5.e8, 5.e8]), 'cm') # look toward the center -- we are dealing with an octant center = ds.domain_left_edge normal = (center - cam.position) normal /= np.sqrt(normal.dot(normal)) cam.switch_orientation(normal_vector=normal, north_vector=[0., 0., 1.]) cam.set_width(ds.domain_width) #sc.annotate_axes() #sc.annotate_domain(ds) sc.render() sc.save("subchandra_test.png", sigma_clip=6.0) sc.save_annotated("subchandra_test_annotated.png", text_annotate=[[(0.05, 0.05), "t = {}".format(ds.current_time.d), dict(horizontalalignment="left")], [(0.5,0.95), "Maestro simulation of He convection on a white dwarf", dict(color="y", fontsize="24", horizontalalignment="center")]])
def test_orientation(): ds = fake_vr_orientation_test_ds() sc = Scene() vol = create_volume_source(ds, field=("gas", "density")) sc.add_source(vol) tf = vol.transfer_function tf = ColorTransferFunction((0.1, 1.0)) tf.sample_colormap(1.0, 0.01, colormap="coolwarm") tf.sample_colormap(0.8, 0.01, colormap="coolwarm") tf.sample_colormap(0.6, 0.01, colormap="coolwarm") tf.sample_colormap(0.3, 0.01, colormap="coolwarm") n_frames = 1 orientations = [[-0.3, -0.1, 0.8]] theta = np.pi / n_frames test_name = "vr_orientation" for lens_type, decimals in [("perspective", 12), ("plane-parallel", 2)]: # set a much lower precision for plane-parallel tests, see # https://github.com/yt-project/yt/issue/3069 # https://github.com/yt-project/yt/pull/3068 # https://github.com/yt-project/yt/pull/3294 frame = 0 cam = sc.add_camera(ds, lens_type=lens_type) cam.resolution = (1000, 1000) cam.position = ds.arr(np.array([-4.0, 0.0, 0.0]), "code_length") cam.switch_orientation(normal_vector=[1.0, 0.0, 0.0], north_vector=[0.0, 0.0, 1.0]) cam.set_width(ds.domain_width * 2.0) desc = "%s_%04d" % (lens_type, frame) test1 = VRImageComparisonTest(sc, ds, desc, decimals) test1.answer_name = test_name yield test1 for _ in range(n_frames): frame += 1 center = ds.arr([0, 0, 0], "code_length") cam.yaw(theta, rot_center=center) desc = "yaw_%s_%04d" % (lens_type, frame) test2 = VRImageComparisonTest(sc, ds, desc, decimals) test2.answer_name = test_name yield test2 for _ in range(n_frames): frame += 1 theta = np.pi / n_frames center = ds.arr([0, 0, 0], "code_length") cam.pitch(theta, rot_center=center) desc = "pitch_%s_%04d" % (lens_type, frame) test3 = VRImageComparisonTest(sc, ds, desc, decimals) test3.answer_name = test_name yield test3 for _ in range(n_frames): frame += 1 theta = np.pi / n_frames center = ds.arr([0, 0, 0], "code_length") cam.roll(theta, rot_center=center) desc = "roll_%s_%04d" % (lens_type, frame) test4 = VRImageComparisonTest(sc, ds, desc, decimals) test4.answer_name = test_name yield test4 center = [0.5, 0.5, 0.5] width = [1.0, 1.0, 1.0] for i, orientation in enumerate(orientations): image = off_axis_projection(ds, center, orientation, width, 512, ("gas", "density"), no_ghost=False) def offaxis_image_func(filename_prefix): return image.write_image(filename_prefix) test5 = GenericImageTest(ds, offaxis_image_func, decimals) test5.prefix = f"oap_orientation_{i}" test5.answer_name = test_name yield test5
def test_orientation(): ds = fake_vr_orientation_test_ds() sc = Scene() vol = VolumeSource(ds, field=('gas', 'density')) sc.add_source(vol) tf = vol.transfer_function tf = ColorTransferFunction((0.1, 1.0)) tf.sample_colormap(1.0, 0.01, colormap="coolwarm") tf.sample_colormap(0.8, 0.01, colormap="coolwarm") tf.sample_colormap(0.6, 0.01, colormap="coolwarm") tf.sample_colormap(0.3, 0.01, colormap="coolwarm") n_frames = 1 orientations = [[-0.3, -0.1, 0.8]] theta = np.pi / n_frames decimals = 12 test_name = "vr_orientation" for lens_type in ['plane-parallel', 'perspective']: frame = 0 cam = sc.add_camera(ds, lens_type=lens_type) cam.resolution = (1000, 1000) cam.position = ds.arr(np.array([-4., 0., 0.]), 'code_length') cam.switch_orientation(normal_vector=[1., 0., 0.], north_vector=[0., 0., 1.]) cam.set_width(ds.domain_width * 2.) desc = '%s_%04d' % (lens_type, frame) test1 = VRImageComparisonTest(sc, ds, desc, decimals) test1.answer_name = test_name yield test1 for i in range(n_frames): frame += 1 center = ds.arr([0, 0, 0], 'code_length') cam.yaw(theta, rot_center=center) desc = 'yaw_%s_%04d' % (lens_type, frame) test2 = VRImageComparisonTest(sc, ds, desc, decimals) test2.answer_name = test_name yield test2 for i in range(n_frames): frame += 1 theta = np.pi / n_frames center = ds.arr([0, 0, 0], 'code_length') cam.pitch(theta, rot_center=center) desc = 'pitch_%s_%04d' % (lens_type, frame) test3 = VRImageComparisonTest(sc, ds, desc, decimals) test3.answer_name = test_name yield test3 for i in range(n_frames): frame += 1 theta = np.pi / n_frames center = ds.arr([0, 0, 0], 'code_length') cam.roll(theta, rot_center=center) desc = 'roll_%s_%04d' % (lens_type, frame) test4 = VRImageComparisonTest(sc, ds, desc, decimals) test4.answer_name = test_name yield test4 center = [0.5, 0.5, 0.5] width = [1.0, 1.0, 1.0] for i, orientation in enumerate(orientations): image = off_axis_projection(ds, center, orientation, width, 512, "density", no_ghost=False) def offaxis_image_func(filename_prefix): return image.write_image(filename_prefix) test5 = GenericImageTest(ds, offaxis_image_func, decimals) test5.prefix = "oap_orientation_{}".format(i) test5.answer_name = test_name yield test5