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Lens Class Reference A base class for any number of different kinds of lenses, linear and otherwise. More...
Inheritance diagram for Lens:
Detailed DescriptionA base class for any number of different kinds of lenses, linear and otherwise. Presently, this includes perspective and orthographic lenses. A Lens object is the main part of a Camera node, which defines the fundamental interface to point-of-view for rendering. Lenses are also used in other contexts, however; for instance, a Spotlight is also defined using a lens. Member Function Documentation
Resets all lens parameters to their initial default settings. Definition at line 88 of file lens.cxx. References do_throw_change_event().
Disables the lens custom_film_mat correction. Definition at line 373 of file lens.cxx. References do_adjust_comp_flags(), do_adjust_user_flags(), do_throw_change_event(), and LMatrix4f::ident_mat().
Disables the lens keystone correction. Definition at line 333 of file lens.cxx. References do_adjust_comp_flags(), do_adjust_user_flags(), and do_throw_change_event().
Resets the lens transform to identity. Definition at line 287 of file lens.cxx. References do_adjust_comp_flags(), do_adjust_user_flags(), do_throw_change_event(), and LMatrix4f::ident_mat().
Clears from _comp_flags the bits in the first parameter, and sets the bits in the second parameter. Definition at line 803 of file lens.I. Referenced by clear_custom_film_mat(), clear_keystone(), MatrixLens::clear_left_eye_mat(), MatrixLens::clear_right_eye_mat(), clear_view_mat(), do_compute_aspect_ratio(), do_compute_film_mat(), do_compute_film_size(), do_compute_focal_length(), do_compute_fov(), do_compute_lens_mat(), PerspectiveLens::do_compute_projection_mat(), OrthographicLens::do_compute_projection_mat(), MatrixLens::do_compute_projection_mat(), do_compute_projection_mat(), do_compute_view_hpr(), do_compute_view_vector(), set_coordinate_system(), set_custom_film_mat(), set_keystone(), MatrixLens::set_left_eye_mat(), set_min_fov(), MatrixLens::set_right_eye_mat(), MatrixLens::set_user_mat(), set_view_hpr(), and set_view_vector().
Clears from _user_flags the bits in the first parameter, and sets the bits in the second parameter. Definition at line 792 of file lens.I. Referenced by clear_custom_film_mat(), clear_keystone(), clear_view_mat(), set_custom_film_mat(), set_keystone(), set_min_fov(), set_view_hpr(), and set_view_vector().
Computes the aspect ratio of the film rectangle, as a ratio of width to height. Definition at line 1555 of file lens.cxx. References do_adjust_comp_flags(). Referenced by set_min_fov().
Computes the matrix that transforms from a point behind the lens to a point on the film. Definition at line 1637 of file lens.cxx. References do_adjust_comp_flags().
Computes the size and shape of the film behind the camera, based on the aspect ratio and fov. Definition at line 1397 of file lens.cxx. References do_adjust_comp_flags(), fov_to_film(), and fov_to_focal_length().
Computes the focal length of the lens, based on the fov and film size. This is based on the horizontal dimension. Definition at line 1460 of file lens.cxx. References do_adjust_comp_flags(), and fov_to_focal_length().
Computes the field of view of the lens, based on the film size and focal length. Definition at line 1477 of file lens.cxx. References do_adjust_comp_flags(), film_to_fov(), and fov_to_focal_length().
Computes the matrix that transforms from a point in front of the lens to a point in space. Definition at line 1675 of file lens.cxx. References do_adjust_comp_flags(), and LMatrix4f::ident_mat().
Computes the complete transformation matrix from 3-d point to 2-d point, if the lens is linear. Reimplemented in MatrixLens, OrthographicLens, and PerspectiveLens. Definition at line 1605 of file lens.cxx. References LMatrix4f::convert_mat(), and do_adjust_comp_flags().
Computes the Euler angles representing the lens' rotation. Definition at line 1574 of file lens.cxx. References do_adjust_comp_flags().
Computes the view vector and up vector for the lens. Definition at line 1589 of file lens.cxx. References do_adjust_comp_flags(), LVector3f::forward(), and LVector3f::up().
Given a 2-d point in the range (-1,1) in both dimensions, where (0,0) is the center of the lens and (-1,-1) is the lower-left corner, compute the corresponding vector in space that maps to this point, if such a vector can be determined. The vector is returned by indicating the points on the near plane and far plane that both map to the indicated 2-d point. The z coordinate of the 2-d point is ignored. Returns true if the vector is defined, or false otherwise. Reimplemented in CylindricalLens, PSphereLens, OSphereLens, and FisheyeLens. Definition at line 1256 of file lens.cxx. References LMatrix4f::xform(). Referenced by extrude().
This is the generic implementation, which is based on do_extrude() and assumes a linear distribution of depth values between the near and far points. Reimplemented in OrthographicLens, and PerspectiveLens. Definition at line 1293 of file lens.cxx. References extrude(). Referenced by extrude_depth().
Implements do_extrude_depth() by using the projection matrix. This is efficient, but works only for a linear (Perspective or Orthographic) lens. Definition at line 1313 of file lens.cxx. References LMatrix4f::xform_point_general(). Referenced by PerspectiveLens::do_extrude_depth(), and OrthographicLens::do_extrude_depth().
Given a 2-d point in the range (-1,1) in both dimensions, where (0,0) is the center of the lens and (-1,-1) is the lower-left corner, compute the vector that corresponds to the view direction. This will be parallel to the normal on the surface (the far plane) corresponding to the lens shape at this point. Generally, for all rational lenses, the center of the film at (0,0) computes a vector that is in the same direction as the vector specified by set_view_vector(). For all linear lenses, including perspective and orthographic lenses, all points on the film compute this same vector (the far plane is a flat plane, so the normal is the same everywhere). For curved lenses like fisheye and cylindrical lenses, different points may compute different vectors (the far "plane" on these lenses is a curved surface). The z coordinate of the 2-d point is ignored. Returns true if the vector is defined, or false otherwise. Reimplemented in CylindricalLens, and FisheyeLens. Definition at line 1350 of file lens.cxx. References LVector3f::forward(). Referenced by extrude_vec().
Given a 3-d point in space, determine the 2-d point this maps to, in the range (-1,1) in both dimensions, where (0,0) is the center of the lens and (-1,-1) is the lower-left corner. The z coordinate will also be set to a value in the range (-1, 1), where -1 represents a point on the near plane, and 1 represents a point on the far plane. Returns true if the 3-d point is in front of the lens and within the viewing frustum (in which case point2d is filled in), or false otherwise (in which case point2d will be filled in with something, which may or may not be meaningful). Reimplemented in CylindricalLens, PSphereLens, OSphereLens, and FisheyeLens. Definition at line 1374 of file lens.cxx. References LMatrix4f::xform(). Referenced by project().
Throws the event associated with changing properties on this Lens, if any. Definition at line 1217 of file lens.cxx. Referenced by clear(), clear_custom_film_mat(), clear_keystone(), clear_view_mat(), set_convergence_distance(), set_coordinate_system(), set_custom_film_mat(), set_interocular_distance(), set_keystone(), set_min_fov(), set_view_hpr(), and set_view_vector().
Given a 2-d point in the range (-1,1) in both dimensions, where (0,0) is the center of the lens and (-1,-1) is the lower-left corner, compute the corresponding vector in space that maps to this point, if such a vector can be determined. The vector is returned by indicating the points on the near plane and far plane that both map to the indicated 2-d point. Returns true if the vector is defined, or false otherwise. Definition at line 32 of file lens.I. References do_extrude(). Referenced by do_extrude_depth(), PortalClipper::prepare_portal(), CollisionRay::set_from_lens(), and CollisionSegment::set_from_lens().
Given a 2-d point in the range (-1,1) in both dimensions, where (0,0) is the center of the lens and (-1,-1) is the lower-left corner, compute the corresponding vector in space that maps to this point, if such a vector can be determined. The vector is returned by indicating the points on the near plane and far plane that both map to the indicated 2-d point. The z coordinate of the 2-d point is ignored. Returns true if the vector is defined, or false otherwise. Definition at line 56 of file lens.I. References do_extrude().
Uses the depth component of the 3-d result from project() to compute the original point in 3-d space corresponding to a particular point on the lens. This exactly reverses project(), assuming the point does fall legitimately within the lens. Definition at line 71 of file lens.I. References do_extrude_depth(). Referenced by PfmVizzer::extrude().
Given a 2-d point in the range (-1,1) in both dimensions, where (0,0) is the center of the lens and (-1,-1) is the lower-left corner, compute the vector that corresponds to the view direction. This will be parallel to the normal on the surface (the far plane) corresponding to the lens shape at this point. See the comment block on Lens::extrude_vec_impl() for a more in-depth comment on the meaning of this vector. Returns true if the vector is defined, or false otherwise. Definition at line 95 of file lens.I. References do_extrude_vec().
Given a 2-d point in the range (-1,1) in both dimensions, where (0,0) is the center of the lens and (-1,-1) is the lower-left corner, compute the vector that corresponds to the view direction. This will be parallel to the normal on the surface (the far plane) corresponding to the lens shape at this point. See the comment block on Lens::extrude_vec_impl() for a more in-depth comment on the meaning of this vector. The z coordinate of the 2-d point is ignored. Returns true if the vector is defined, or false otherwise. Definition at line 121 of file lens.I. References do_extrude_vec().
This internal function is called by make_from_bam to read in all of the relevant data from the BamFile for the new Lens. Reimplemented from TypedWritable. Definition at line 2076 of file lens.cxx. References BamReader::read_cdata(). Referenced by PerspectiveLens::make_from_bam(), OrthographicLens::make_from_bam(), and MatrixLens::make_from_bam().
Given a width (or height) on the film and a focal length, compute the field of view in degrees. If horiz is true, this is in the horizontal direction; otherwise, it is in the vertical direction (some lenses behave differently in each direction). Reimplemented in CylindricalLens, PSphereLens, OSphereLens, FisheyeLens, and PerspectiveLens. Definition at line 1732 of file lens.cxx. Referenced by do_compute_fov().
Given a field of view in degrees and a focal length, compute the corresponding width (or height) on the film. If horiz is true, this is in the horizontal direction; otherwise, it is in the vertical direction (some lenses behave differently in each direction). Reimplemented in CylindricalLens, PSphereLens, OSphereLens, FisheyeLens, and PerspectiveLens. Definition at line 1704 of file lens.cxx. Referenced by do_compute_film_size().
Given a field of view in degrees and a width (or height) on the film, compute the focal length of the lens. If horiz is true, this is in the horizontal direction; otherwise, it is in the vertical direction (some lenses behave differently in each direction). Reimplemented in CylindricalLens, PSphereLens, OSphereLens, FisheyeLens, and PerspectiveLens. Definition at line 1718 of file lens.cxx. Referenced by do_compute_film_size(), do_compute_focal_length(), and do_compute_fov().
Returns the aspect ratio of the Lens. This is determined based on the indicated film size; see set_film_size().
Returns the coordinate system that all 3-d computations are performed within for this Lens. Normally, this is CS_default. Definition at line 212 of file lens.I. Referenced by SpeedTreeNode::cull_callback(), and PortalClipper::prepare_portal().
Returns the position of the far plane (or cylinder, sphere, whatever). Definition at line 522 of file lens.I. Referenced by SpeedTreeNode::cull_callback().
Returns the horizontal and vertical offset amounts of this Lens. See set_film_offset().
Returns the horizontal and vertical film size of the virtual film. See set_film_size().
Returns the focal length of the lens. This may have been set explicitly by a previous call to set_focal_length(), or it may be computed based on the lens' fov and film_size. For certain kinds of lenses, the focal length has no meaning.
Returns the horizontal and vertical film size of the virtual film. See set_fov(). Definition at line 423 of file lens.I. Referenced by get_hfov(), and get_vfov().
Returns the horizontal component of fov only. See get_fov(). Definition at line 435 of file lens.I. References get_fov(). Referenced by TinyGraphicsStateGuardian::bind_light(), DXGraphicsStateGuardian8::bind_light(), and DXGraphicsStateGuardian9::bind_light().
Returns the field of view of the narrowest dimension of the window. See set_min_fov(). Definition at line 150 of file lens.cxx. References CycleDataReader< CycleDataType >::p().
Returns the position of the near plane (or cylinder, sphere, whatever). Definition at line 497 of file lens.I. Referenced by SpeedTreeNode::cull_callback().
Returns the center point of the lens: the point from which the lens is viewing. Definition at line 277 of file lens.cxx. References LMatrix4f::get_row3(), and get_view_mat(). Referenced by TinyGraphicsStateGuardian::bind_light(), DXGraphicsStateGuardian8::bind_light(), and DXGraphicsStateGuardian9::bind_light().
Returns the complete transformation matrix from a 3-d point in space to a point on the film, if such a matrix exists, or the identity matrix if the lens is nonlinear. Definition at line 705 of file lens.I. Referenced by ScissorEffect::cull_callback(), TexProjectorEffect::cull_callback(), and SpeedTreeNode::cull_callback().
Returns the matrix that transforms from a 2-d point on the film to a 3-d vector in space, if such a matrix exists. Definition at line 718 of file lens.I. Referenced by PfmVizzer::extrude().
Returns the axis perpendicular to the camera's view vector that indicates the "up" direction. Definition at line 262 of file lens.cxx. References CycleDataReader< CycleDataType >::p().
Returns the direction in which the lens is facing. Definition at line 211 of file lens.cxx. References CycleDataReader< CycleDataType >::p().
Returns the direction in which the lens is facing. Definition at line 667 of file lens.I. Referenced by get_nodal_point().
Returns the axis along which the lens is facing. Definition at line 247 of file lens.cxx. References CycleDataReader< CycleDataType >::p(). Referenced by TinyGraphicsStateGuardian::bind_light(), DXGraphicsStateGuardian8::bind_light(), and DXGraphicsStateGuardian9::bind_light().
Returns true if the lens represents a linear projection (e.g. PerspectiveLens, OrthographicLens), and therefore there is a valid matrix returned by get_projection_mat(), or false otherwise. Reimplemented in MatrixLens, OrthographicLens, and PerspectiveLens. Definition at line 615 of file lens.cxx. Referenced by PfmVizzer::extrude().
Returns true if the lens represents a orthographic projection (i.e. it is a OrthographicLens), false otherwise. Reimplemented in OrthographicLens.
Returns true if the lens represents a perspective projection (i.e. it is a PerspectiveLens), false otherwise. Reimplemented in PerspectiveLens.
Given a 3-d point in space, determine the 2-d point this maps to, in the range (-1,1) in both dimensions, where (0,0) is the center of the lens and (-1,-1) is the lower-left corner. The z coordinate will also be set to a value in the range (-1, 1), where 1 represents a point on the near plane, and -1 represents a point on the far plane. Returns true if the 3-d point is in front of the lens and within the viewing frustum (in which case point2d is filled in), or false otherwise (in which case point2d will be filled in with something, which may or may not be meaningful). Definition at line 168 of file lens.I. References do_project(). Referenced by PortalClipper::prepare_portal(), and PfmVizzer::project().
Given a 3-d point in space, determine the 2-d point this maps to, in the range (-1,1) in both dimensions, where (0,0) is the center of the lens and (-1,-1) is the lower-left corner. Returns true if the 3-d point is in front of the lens and within the viewing frustum (in which case point2d is filled in), or false otherwise (in which case point2d will be filled in with something, which may or may not be meaningful). Definition at line 141 of file lens.I. References do_project().
Sets the name of the event that will be generated whenever any properties of the Lens have changed. If this is not set for a particular lens, no event will be generated. The event is thrown with one parameter, the lens itself. This can be used to automatically track changes to camera fov, etc. in the application.
Sets the distance between between the camera plane and the point in the distance that the left and right eyes are both looking at. This distance is used to apply a stereo effect when the lens is rendered on a stereo display region. It only has an effect on a PerspectiveLens. This parameter must be greater than 0, but may be as large as you like. It controls the amount to which the two eyes are directed inwards towards each other, which is a normal property of stereo vision. It is a distance, not an angle; normally this should be set to the distance from the camera to the area of interest in your scene. If you want to simulate parallel stereo, set this value to a very large number. Also see set_interocular_distance(), which relates. Definition at line 623 of file lens.I. References do_throw_change_event().
Specifies the coordinate system that all 3-d computations are performed within for this Lens. Normally, this is CS_default. Definition at line 74 of file lens.cxx. References do_adjust_comp_flags(), and do_throw_change_event().
Specifies a custom matrix to transform the points on the film after they have been converted into nominal film space (-1 . . 1 in U and V). This can be used to introduce arbitrary scales, rotations, or other linear transforms to the media plane. This is normally a 2-d matrix, but a full 4x4 matrix may be specified. This is applied on top of any film size, lens shift, and/or keystone correction. Definition at line 356 of file lens.cxx. References do_adjust_comp_flags(), do_adjust_user_flags(), do_throw_change_event(), and LMatrix4f::is_nan().
Sets the horizontal and vertical offset amounts of this Lens. These are both in the same units specified in set_film_size(). This can be used to establish an off-axis lens.
Sets the horizontal and vertical offset amounts of this Lens. These are both in the same units specified in set_film_size(). This can be used to establish an off-axis lens.
Sets the horizontal size of the film without changing its shape. The aspect ratio remains unchanged; this computes the vertical size of the film to automatically maintain the aspect ratio. Definition at line 226 of file lens.I. Referenced by RocketRegion::RocketRegion(), set_film_size(), FrameRateMeter::setup_window(), and SceneGraphAnalyzerMeter::setup_window().
Sets the size and shape of the "film" within the lens. This both establishes the units used by calls like set_focal_length(), and establishes the aspect ratio of the frame. In a physical camera, the field of view of a lens is determined by the lens' focal length and by the size of the film area exposed by the lens. For instance, a 35mm camera exposes a rectangle on the film about 24mm x 36mm, which means a 50mm lens gives about a 40-degree horizontal field of view. In the virtual camera, you may set the film size to any units here, and specify a focal length in the same units to simulate the same effect. Or, you may ignore this parameter, and specify the field of view and aspect ratio of the lens directly. Definition at line 253 of file lens.I. References set_film_size().
Sets the size and shape of the "film" within the lens. This both establishes the units used by calls like set_focal_length(), and establishes the aspect ratio of the frame. In a physical camera, the field of view of a lens is determined by the lens' focal length and by the size of the film area exposed by the lens. For instance, a 35mm camera exposes a rectangle on the film about 24mm x 36mm, which means a 50mm lens gives about a 40-degree horizontal field of view. In the virtual camera, you may set the film size to any units here, and specify a focal length in the same units to simulate the same effect. Or, you may ignore this parameter, and specify the field of view and aspect ratio of the lens directly.
Sets the focal length of the lens. This may adjust the field-of-view correspondingly, and is an alternate way to specify field of view. For certain kinds of lenses (e.g. OrthographicLens), the focal length has no meaning.
Sets the horizontal field of view of the lens without changing the aspect ratio. The vertical field of view is adjusted to maintain the same aspect ratio. Definition at line 376 of file lens.I. Referenced by GraphicsOutput::make_cube_map(), and set_fov().
Sets the field of view of the lens in both dimensions. This establishes both the field of view and the aspect ratio of the lens. This is one way to specify the field of view of a lens; set_focal_length() is another way. For certain kinds of lenses (like OrthoLens), the field of view has no meaning. Definition at line 394 of file lens.I. References set_fov().
Sets the field of view of the lens in both dimensions. This establishes both the field of view and the aspect ratio of the lens. This is one way to specify the field of view of a lens; set_focal_length() is another way. For certain kinds of lenses (like OrthographicLens), the field of view has no meaning.
Sets up the lens to use the frustum defined by the four indicated points. This is most useful for a PerspectiveLens, but it may be called for other kinds of lenses as well. The frustum will be rooted at the origin (or by whatever translation might have been specified in a previous call to set_view_mat). It is legal for the four points not to be arranged in a rectangle; if this is the case, the frustum will be fitted as tightly as possible to cover all four points. The flags parameter contains the union of one or more of the following bits to control the behavior of this function: FC_roll - If this is included, the camera may be rotated so that its up vector is perpendicular to the top line. Otherwise, the standard up vector is used. FC_camera_plane - This allows the camera plane to be adjusted to be as nearly perpendicular to the center of the frustum as possible. Without this bit, the orientation camera plane is defined by position of the four points (which should all be coplanar). With this bit, the camera plane is arbitarary, and may be chosen so that the four points do not themselves lie in the camera plane (but the points will still be within the frustum). FC_off_axis - This allows the resulting frustum to be off-axis to get the tightest possible fit. Without this bit, the viewing axis will be centered within the frustum, but there may be more wasted space along the edges. FC_aspect_ratio - This allows the frustum to be scaled non-proportionately in the vertical and horizontal dimensions, if necessary, to get a tighter fit. Without this bit, the current aspect ratio will be preserved. FC_shear - This allows the frustum to be sheared, if necessary, to get the tightest possible fit. This may result in a parallelogram-based frustum, which will give a slanted appearance to the rendered image. Without this bit, the frustum will be rectangle-based. In general, if 0 is passed in as the value for flags, the generated frustum will be a loose fit but sane; if -1 is passed in, it will be a tighter fit and possibly screwy. Definition at line 443 of file lens.cxx. References LMatrix4f::get_row3(), LMatrix4f::ident_mat(), LMatrix4f::invert_affine_from(), LMatrix4f::invert_from(), LVecBase3f::is_nan(), LVecBase3f::length_squared(), LMatrix4f::set_row(), LVector3f::up(), and LMatrix4f::xform_point().
Sets the distance between the left and right eyes of a stereo camera. This distance is used to apply a stereo effect when the lens is rendered on a stereo display region. It only has an effect on a PerspectiveLens. The left eye and the right eye are each offset along the X axis by half of this distance, so that this parameter specifies the total distance between them. Also see set_convergence_distance(), which relates. Definition at line 583 of file lens.I. References do_throw_change_event().
Indicates the ratio of keystone correction to perform on the lens, in each of three axes. This will build a special non-affine scale factor into the projection matrix that will compensate for keystoning of a projected image; this can be used to compensate for a projector that for physical reasons cannot be aimed directly at its screen. The default value is taken from the default-keystone Config variable. 0, 0 indicates no keystone correction; specify a small value (usually in the range -1 .. 1) in either the x or y position to generate a keystone correction in that axis. Definition at line 316 of file lens.cxx. References do_adjust_comp_flags(), do_adjust_user_flags(), do_throw_change_event(), and LVecBase2f::is_nan().
Sets the field of view of the smallest dimension of the window. If the window is wider than it is tall, this specifies the vertical field of view; if it is taller than it is wide, this specifies the horizontal field of view. In many cases, this is preferable to setting either the horizontal or vertical field of view explicitly. Setting this parameter means that pulling the window wider will widen the field of view, which is usually what you expect to happen. Definition at line 113 of file lens.cxx. References do_adjust_comp_flags(), do_adjust_user_flags(), do_compute_aspect_ratio(), and do_throw_change_event().
Sets the direction in which the lens is facing. Normally, this is down the forward axis (usually the Y axis), but it may be rotated. This is only one way of specifying the rotation; you may also specify an explicit vector in which to look, or you may give a complete transformation matrix.
Sets the direction in which the lens is facing. Normally, this is down the forward axis (usually the Y axis), but it may be rotated. This is only one way of specifying the rotation; you may also specify an explicit vector in which to look, or you may give a complete transformation matrix. Definition at line 194 of file lens.cxx. References do_adjust_comp_flags(), do_adjust_user_flags(), do_throw_change_event(), and LVecBase3f::is_nan().
Sets an arbitrary transformation on the lens. This replaces the individual transformation components like set_view_hpr(). Setting a transformation here will have a slightly different effect than putting one on the LensNode that contains this lens. In particular, lighting and other effects computations will still be performed on the lens in its untransformed (facing forward) position, but the actual projection matrix will be transformed by this matrix.
Specifies the direction in which the lens is facing by giving an axis to look along, and a perpendicular (or at least non-parallel) up axis. See also set_view_hpr(). Definition at line 563 of file lens.I. Referenced by PointLight::PointLight().
Specifies the direction in which the lens is facing by giving an axis to look along, and a perpendicular (or at least non-parallel) up axis. See also set_view_hpr(). Definition at line 229 of file lens.cxx. References do_adjust_comp_flags(), do_adjust_user_flags(), do_throw_change_event(), and LVecBase3f::is_nan().
Writes the contents of this object to the datagram for shipping out to a Bam file. Reimplemented from TypedWritable. Definition at line 2063 of file lens.cxx. References BamWriter::write_cdata(). The documentation for this class was generated from the following files: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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