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Adds a method to shift the focal point of the camera #62

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merged 2 commits into from
Oct 16, 2023
Merged

Adds a method to shift the focal point of the camera #62

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Adds a method to shift the focal point of the camera
delaossa Oct 11, 2023
2bb068d
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delaossa Oct 12, 2023
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19 changes: 17 additions & 2 deletions visualpic/visualization/vtk_visualizer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -116,7 +116,7 @@ def __init__(self, show_axes=True, show_cube_axes=True,
'um': 0.1,
'c/\\omega_p': 1}
self.forced_norm_factor = forced_norm_factor
self.camera_props = {'zoom': 1}
self.camera_props = {'zoom': 1, 'focus_shift': None}
self.volume_field_list = []
self.scatter_species_list = []
self.colorbar_list = []
Expand Down Expand Up @@ -469,7 +469,18 @@ def set_camera_zoom(self, zoom):

"""
self.camera_props['zoom'] = zoom
self.camera.Zoom(zoom)

def set_camera_shift(self, shift):
"""
Shift the focal point of the camera in three directions.

Parameters
----------

shift : list
The three components of the shift vector.
"""
self.camera_props['focus_shift'] = shift

def get_possible_timesteps(self):
"""
Expand Down Expand Up @@ -925,6 +936,10 @@ def _setup_cube_axes_and_bbox(self):
def _setup_camera(self):
self.renderer.ResetCamera()
self.camera.Zoom(self.camera_props['zoom'])
if self.camera_props['focus_shift'] is not None:
focus = np.array(self.camera.GetFocalPoint()) \
+ self.camera_props['focus_shift']
self.camera.SetFocalPoint(focus[0], focus[1], focus[2])

def _set_background_colors(self, color, color_2=None):
"""
Expand Down
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