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260 lines
22 KiB
ReStructuredText
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.. DO NOT EDIT THIS FILE!!!
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.. Generated automatically from Godot engine sources.
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.. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
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.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/Geometry3D.xml.
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.. _class_Geometry3D:
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Geometry3D
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==========
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**Inherits:** :ref:`Object<class_Object>`
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Provides methods for some common 3D geometric operations.
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.. rst-class:: classref-introduction-group
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Description
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-----------
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Provides a set of helper functions to create geometric shapes, compute intersections between shapes, and process various other geometric operations in 3D.
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.. rst-class:: classref-reftable-group
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Methods
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-------
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.. table::
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:widths: auto
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Array<class_Array>`\[:ref:`Plane<class_Plane>`\] | :ref:`build_box_planes<class_Geometry3D_method_build_box_planes>`\ (\ extents\: :ref:`Vector3<class_Vector3>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Array<class_Array>`\[:ref:`Plane<class_Plane>`\] | :ref:`build_capsule_planes<class_Geometry3D_method_build_capsule_planes>`\ (\ radius\: :ref:`float<class_float>`, height\: :ref:`float<class_float>`, sides\: :ref:`int<class_int>`, lats\: :ref:`int<class_int>`, axis\: :ref:`Axis<enum_Vector3_Axis>` = 2\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Array<class_Array>`\[:ref:`Plane<class_Plane>`\] | :ref:`build_cylinder_planes<class_Geometry3D_method_build_cylinder_planes>`\ (\ radius\: :ref:`float<class_float>`, height\: :ref:`float<class_float>`, sides\: :ref:`int<class_int>`, axis\: :ref:`Axis<enum_Vector3_Axis>` = 2\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`PackedVector3Array<class_PackedVector3Array>` | :ref:`clip_polygon<class_Geometry3D_method_clip_polygon>`\ (\ points\: :ref:`PackedVector3Array<class_PackedVector3Array>`, plane\: :ref:`Plane<class_Plane>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`PackedVector3Array<class_PackedVector3Array>` | :ref:`compute_convex_mesh_points<class_Geometry3D_method_compute_convex_mesh_points>`\ (\ planes\: :ref:`Array<class_Array>`\[:ref:`Plane<class_Plane>`\]\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Vector3<class_Vector3>` | :ref:`get_closest_point_to_segment<class_Geometry3D_method_get_closest_point_to_segment>`\ (\ point\: :ref:`Vector3<class_Vector3>`, s1\: :ref:`Vector3<class_Vector3>`, s2\: :ref:`Vector3<class_Vector3>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Vector3<class_Vector3>` | :ref:`get_closest_point_to_segment_uncapped<class_Geometry3D_method_get_closest_point_to_segment_uncapped>`\ (\ point\: :ref:`Vector3<class_Vector3>`, s1\: :ref:`Vector3<class_Vector3>`, s2\: :ref:`Vector3<class_Vector3>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`PackedVector3Array<class_PackedVector3Array>` | :ref:`get_closest_points_between_segments<class_Geometry3D_method_get_closest_points_between_segments>`\ (\ p1\: :ref:`Vector3<class_Vector3>`, p2\: :ref:`Vector3<class_Vector3>`, q1\: :ref:`Vector3<class_Vector3>`, q2\: :ref:`Vector3<class_Vector3>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Vector3<class_Vector3>` | :ref:`get_triangle_barycentric_coords<class_Geometry3D_method_get_triangle_barycentric_coords>`\ (\ point\: :ref:`Vector3<class_Vector3>`, a\: :ref:`Vector3<class_Vector3>`, b\: :ref:`Vector3<class_Vector3>`, c\: :ref:`Vector3<class_Vector3>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Variant<class_Variant>` | :ref:`ray_intersects_triangle<class_Geometry3D_method_ray_intersects_triangle>`\ (\ from\: :ref:`Vector3<class_Vector3>`, dir\: :ref:`Vector3<class_Vector3>`, a\: :ref:`Vector3<class_Vector3>`, b\: :ref:`Vector3<class_Vector3>`, c\: :ref:`Vector3<class_Vector3>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`PackedVector3Array<class_PackedVector3Array>` | :ref:`segment_intersects_convex<class_Geometry3D_method_segment_intersects_convex>`\ (\ from\: :ref:`Vector3<class_Vector3>`, to\: :ref:`Vector3<class_Vector3>`, planes\: :ref:`Array<class_Array>`\[:ref:`Plane<class_Plane>`\]\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`PackedVector3Array<class_PackedVector3Array>` | :ref:`segment_intersects_cylinder<class_Geometry3D_method_segment_intersects_cylinder>`\ (\ from\: :ref:`Vector3<class_Vector3>`, to\: :ref:`Vector3<class_Vector3>`, height\: :ref:`float<class_float>`, radius\: :ref:`float<class_float>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`PackedVector3Array<class_PackedVector3Array>` | :ref:`segment_intersects_sphere<class_Geometry3D_method_segment_intersects_sphere>`\ (\ from\: :ref:`Vector3<class_Vector3>`, to\: :ref:`Vector3<class_Vector3>`, sphere_position\: :ref:`Vector3<class_Vector3>`, sphere_radius\: :ref:`float<class_float>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Variant<class_Variant>` | :ref:`segment_intersects_triangle<class_Geometry3D_method_segment_intersects_triangle>`\ (\ from\: :ref:`Vector3<class_Vector3>`, to\: :ref:`Vector3<class_Vector3>`, a\: :ref:`Vector3<class_Vector3>`, b\: :ref:`Vector3<class_Vector3>`, c\: :ref:`Vector3<class_Vector3>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`PackedInt32Array<class_PackedInt32Array>` | :ref:`tetrahedralize_delaunay<class_Geometry3D_method_tetrahedralize_delaunay>`\ (\ points\: :ref:`PackedVector3Array<class_PackedVector3Array>`\ ) |
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+--------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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Method Descriptions
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-------------------
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.. _class_Geometry3D_method_build_box_planes:
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.. rst-class:: classref-method
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:ref:`Array<class_Array>`\[:ref:`Plane<class_Plane>`\] **build_box_planes**\ (\ extents\: :ref:`Vector3<class_Vector3>`\ ) :ref:`🔗<class_Geometry3D_method_build_box_planes>`
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Returns an array with 6 :ref:`Plane<class_Plane>`\ s that describe the sides of a box centered at the origin. The box size is defined by ``extents``, which represents one (positive) corner of the box (i.e. half its actual size).
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_build_capsule_planes:
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.. rst-class:: classref-method
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:ref:`Array<class_Array>`\[:ref:`Plane<class_Plane>`\] **build_capsule_planes**\ (\ radius\: :ref:`float<class_float>`, height\: :ref:`float<class_float>`, sides\: :ref:`int<class_int>`, lats\: :ref:`int<class_int>`, axis\: :ref:`Axis<enum_Vector3_Axis>` = 2\ ) :ref:`🔗<class_Geometry3D_method_build_capsule_planes>`
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Returns an array of :ref:`Plane<class_Plane>`\ s closely bounding a faceted capsule centered at the origin with radius ``radius`` and height ``height``. The parameter ``sides`` defines how many planes will be generated for the side part of the capsule, whereas ``lats`` gives the number of latitudinal steps at the bottom and top of the capsule. The parameter ``axis`` describes the axis along which the capsule is oriented (0 for X, 1 for Y, 2 for Z).
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_build_cylinder_planes:
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.. rst-class:: classref-method
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:ref:`Array<class_Array>`\[:ref:`Plane<class_Plane>`\] **build_cylinder_planes**\ (\ radius\: :ref:`float<class_float>`, height\: :ref:`float<class_float>`, sides\: :ref:`int<class_int>`, axis\: :ref:`Axis<enum_Vector3_Axis>` = 2\ ) :ref:`🔗<class_Geometry3D_method_build_cylinder_planes>`
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Returns an array of :ref:`Plane<class_Plane>`\ s closely bounding a faceted cylinder centered at the origin with radius ``radius`` and height ``height``. The parameter ``sides`` defines how many planes will be generated for the round part of the cylinder. The parameter ``axis`` describes the axis along which the cylinder is oriented (0 for X, 1 for Y, 2 for Z).
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_clip_polygon:
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.. rst-class:: classref-method
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:ref:`PackedVector3Array<class_PackedVector3Array>` **clip_polygon**\ (\ points\: :ref:`PackedVector3Array<class_PackedVector3Array>`, plane\: :ref:`Plane<class_Plane>`\ ) :ref:`🔗<class_Geometry3D_method_clip_polygon>`
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Clips the polygon defined by the points in ``points`` against the ``plane`` and returns the points of the clipped polygon.
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_compute_convex_mesh_points:
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.. rst-class:: classref-method
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:ref:`PackedVector3Array<class_PackedVector3Array>` **compute_convex_mesh_points**\ (\ planes\: :ref:`Array<class_Array>`\[:ref:`Plane<class_Plane>`\]\ ) :ref:`🔗<class_Geometry3D_method_compute_convex_mesh_points>`
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Calculates and returns all the vertex points of a convex shape defined by an array of ``planes``.
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_get_closest_point_to_segment:
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.. rst-class:: classref-method
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:ref:`Vector3<class_Vector3>` **get_closest_point_to_segment**\ (\ point\: :ref:`Vector3<class_Vector3>`, s1\: :ref:`Vector3<class_Vector3>`, s2\: :ref:`Vector3<class_Vector3>`\ ) :ref:`🔗<class_Geometry3D_method_get_closest_point_to_segment>`
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Returns the 3D point on the 3D segment (``s1``, ``s2``) that is closest to ``point``. The returned point will always be inside the specified segment.
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_get_closest_point_to_segment_uncapped:
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.. rst-class:: classref-method
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:ref:`Vector3<class_Vector3>` **get_closest_point_to_segment_uncapped**\ (\ point\: :ref:`Vector3<class_Vector3>`, s1\: :ref:`Vector3<class_Vector3>`, s2\: :ref:`Vector3<class_Vector3>`\ ) :ref:`🔗<class_Geometry3D_method_get_closest_point_to_segment_uncapped>`
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Returns the 3D point on the 3D line defined by (``s1``, ``s2``) that is closest to ``point``. The returned point can be inside the segment (``s1``, ``s2``) or outside of it, i.e. somewhere on the line extending from the segment.
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_get_closest_points_between_segments:
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.. rst-class:: classref-method
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:ref:`PackedVector3Array<class_PackedVector3Array>` **get_closest_points_between_segments**\ (\ p1\: :ref:`Vector3<class_Vector3>`, p2\: :ref:`Vector3<class_Vector3>`, q1\: :ref:`Vector3<class_Vector3>`, q2\: :ref:`Vector3<class_Vector3>`\ ) :ref:`🔗<class_Geometry3D_method_get_closest_points_between_segments>`
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Given the two 3D segments (``p1``, ``p2``) and (``q1``, ``q2``), finds those two points on the two segments that are closest to each other. Returns a :ref:`PackedVector3Array<class_PackedVector3Array>` that contains this point on (``p1``, ``p2``) as well the accompanying point on (``q1``, ``q2``).
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_get_triangle_barycentric_coords:
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.. rst-class:: classref-method
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:ref:`Vector3<class_Vector3>` **get_triangle_barycentric_coords**\ (\ point\: :ref:`Vector3<class_Vector3>`, a\: :ref:`Vector3<class_Vector3>`, b\: :ref:`Vector3<class_Vector3>`, c\: :ref:`Vector3<class_Vector3>`\ ) :ref:`🔗<class_Geometry3D_method_get_triangle_barycentric_coords>`
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Returns a :ref:`Vector3<class_Vector3>` containing weights based on how close a 3D position (``point``) is to a triangle's different vertices (``a``, ``b`` and ``c``). This is useful for interpolating between the data of different vertices in a triangle. One example use case is using this to smoothly rotate over a mesh instead of relying solely on face normals.
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\ `Here is a more detailed explanation of barycentric coordinates. <https://en.wikipedia.org/wiki/Barycentric_coordinate_system>`__
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_ray_intersects_triangle:
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.. rst-class:: classref-method
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:ref:`Variant<class_Variant>` **ray_intersects_triangle**\ (\ from\: :ref:`Vector3<class_Vector3>`, dir\: :ref:`Vector3<class_Vector3>`, a\: :ref:`Vector3<class_Vector3>`, b\: :ref:`Vector3<class_Vector3>`, c\: :ref:`Vector3<class_Vector3>`\ ) :ref:`🔗<class_Geometry3D_method_ray_intersects_triangle>`
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Tests if the 3D ray starting at ``from`` with the direction of ``dir`` intersects the triangle specified by ``a``, ``b`` and ``c``. If yes, returns the point of intersection as :ref:`Vector3<class_Vector3>`. If no intersection takes place, returns ``null``.
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_segment_intersects_convex:
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.. rst-class:: classref-method
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:ref:`PackedVector3Array<class_PackedVector3Array>` **segment_intersects_convex**\ (\ from\: :ref:`Vector3<class_Vector3>`, to\: :ref:`Vector3<class_Vector3>`, planes\: :ref:`Array<class_Array>`\[:ref:`Plane<class_Plane>`\]\ ) :ref:`🔗<class_Geometry3D_method_segment_intersects_convex>`
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Given a convex hull defined though the :ref:`Plane<class_Plane>`\ s in the array ``planes``, tests if the segment (``from``, ``to``) intersects with that hull. If an intersection is found, returns a :ref:`PackedVector3Array<class_PackedVector3Array>` containing the point the intersection and the hull's normal. Otherwise, returns an empty array.
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_segment_intersects_cylinder:
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.. rst-class:: classref-method
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:ref:`PackedVector3Array<class_PackedVector3Array>` **segment_intersects_cylinder**\ (\ from\: :ref:`Vector3<class_Vector3>`, to\: :ref:`Vector3<class_Vector3>`, height\: :ref:`float<class_float>`, radius\: :ref:`float<class_float>`\ ) :ref:`🔗<class_Geometry3D_method_segment_intersects_cylinder>`
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Checks if the segment (``from``, ``to``) intersects the cylinder with height ``height`` that is centered at the origin and has radius ``radius``. If no, returns an empty :ref:`PackedVector3Array<class_PackedVector3Array>`. If an intersection takes place, the returned array contains the point of intersection and the cylinder's normal at the point of intersection.
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_segment_intersects_sphere:
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.. rst-class:: classref-method
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:ref:`PackedVector3Array<class_PackedVector3Array>` **segment_intersects_sphere**\ (\ from\: :ref:`Vector3<class_Vector3>`, to\: :ref:`Vector3<class_Vector3>`, sphere_position\: :ref:`Vector3<class_Vector3>`, sphere_radius\: :ref:`float<class_float>`\ ) :ref:`🔗<class_Geometry3D_method_segment_intersects_sphere>`
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Checks if the segment (``from``, ``to``) intersects the sphere that is located at ``sphere_position`` and has radius ``sphere_radius``. If no, returns an empty :ref:`PackedVector3Array<class_PackedVector3Array>`. If yes, returns a :ref:`PackedVector3Array<class_PackedVector3Array>` containing the point of intersection and the sphere's normal at the point of intersection.
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_segment_intersects_triangle:
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.. rst-class:: classref-method
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:ref:`Variant<class_Variant>` **segment_intersects_triangle**\ (\ from\: :ref:`Vector3<class_Vector3>`, to\: :ref:`Vector3<class_Vector3>`, a\: :ref:`Vector3<class_Vector3>`, b\: :ref:`Vector3<class_Vector3>`, c\: :ref:`Vector3<class_Vector3>`\ ) :ref:`🔗<class_Geometry3D_method_segment_intersects_triangle>`
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Tests if the segment (``from``, ``to``) intersects the triangle ``a``, ``b``, ``c``. If yes, returns the point of intersection as :ref:`Vector3<class_Vector3>`. If no intersection takes place, returns ``null``.
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.. rst-class:: classref-item-separator
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----
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.. _class_Geometry3D_method_tetrahedralize_delaunay:
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.. rst-class:: classref-method
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:ref:`PackedInt32Array<class_PackedInt32Array>` **tetrahedralize_delaunay**\ (\ points\: :ref:`PackedVector3Array<class_PackedVector3Array>`\ ) :ref:`🔗<class_Geometry3D_method_tetrahedralize_delaunay>`
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Tetrahedralizes the volume specified by a discrete set of ``points`` in 3D space, ensuring that no point lies within the circumsphere of any resulting tetrahedron. The method returns a :ref:`PackedInt32Array<class_PackedInt32Array>` where each tetrahedron consists of four consecutive point indices into the ``points`` array (resulting in an array with ``n * 4`` elements, where ``n`` is the number of tetrahedra found). If the tetrahedralization is unsuccessful, an empty :ref:`PackedInt32Array<class_PackedInt32Array>` is returned.
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.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
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.. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)`
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.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
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.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
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.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
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.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
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.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
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.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`
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.. |void| replace:: :abbr:`void (No return value.)`
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