added actor for cylinder

Author: ManishReddyR

fury/actor.py

@@ -190,3 +190,107 @@ def box(
     obj.prim_count = prim_count
 
     return obj
+
+
+def cylinder(
+    centers,
+    colors,
+    *,
+    height= 1,
+    sectors= 36,
+    radii= 0.5,
+    scales=(1, 1, 1),
+    directions=(0, 1, 0),
+    capped= True,
+    opacity= None,
+    material= "phong",
+    enable_picking= True,
+):
+    """Visualize one or many cylinders with different features.
+
+    Parameters
+    ----------
+    centers : ndarray, shape (N, 3)
+        Box positions.
+    colors : ndarray (N,3) or (N, 4) or tuple (3,) or tuple (4,), optional
+        RGB or RGBA (for opacity) R, G, B and A should be at the range [0, 1].
+    height: float, optional
+        The height of the cylinder. Default is 1.
+    sectors: int, optional
+        The number of divisions around the cylinder's circumference (like longitudinal slices).
+        Higher values produce smoother cylinders. Default is 36.
+    radii : float or ndarray (N,) or tuple, optional
+        The radius of the base of the cylinders. A single value applies to all cylinders,
+        while an array specifies a radius for each cylinder individually. Default is 0.5.
+    scales : int or ndarray (N, 3) or tuple (3,), optional
+        Scaling factors for the cylinders in the (x, y, z) dimensions. Default is uniform scaling (1, 1, 1).
+    directions : ndarray, shape (N, 3), optional
+        The orientation vector of the box.
+    capped : bool, optional
+        Whether to add caps (circular ends) to the cylinders. Default is True.
+    scales : int or ndarray (N,3) or tuple (3,), optional
+        The size of the box in each dimension.  If a single value is provided,
+        the same size will be used for all boxes.
+    opacity : float, optional
+        Takes values from 0 (fully transparent) to 1 (opaque).
+        If both `opacity` and RGBA are provided, the final alpha will be:
+        final_alpha = alpha_in_RGBA * opacity
+    material : str, optional
+        The material type for the boxes. Options are 'phong' and 'basic'.
+    enable_picking : bool, optional
+        Whether the boxes should be pickable in a 3D scene.
+
+    Returns
+    -------
+    mesh_actor : Actor
+        A mesh actor containing the generated boxes, with the specified
+        material and properties.
+
+    Examples
+    --------
+    >>> from fury import window, actor
+    >>> import numpy as np
+    >>> scene = window.Scene()
+    >>> centers = np.random.rand(5, 3) * 10
+    >>> colors = np.random.rand(5, 3)
+    >>> cylinder_actor = actor.cylinder(centers=centers, colors=colors)
+    >>> scene.add(cylinder_actor)
+    >>> show_manager = window.ShowManager(scene=scene, size=(600, 600))
+    >>> show_manager.start()
+    """
+    
+    vertices, faces = fp.prim_cylinder(radius= radii, height= height, sectors= sectors, capped= capped)
+    res = fp.repeat_primitive(
+        vertices,
+        faces,
+        directions=directions,
+        centers=centers,
+        colors=colors,
+        scales=scales,
+    )
+    big_vertices, big_faces, big_colors, _ = res
+    prim_count = len(centers)
+    big_colors = big_colors / 255.0
+
+    if isinstance(opacity, (int, float)):
+        if big_colors.shape[1] == 3:
+            big_colors = np.hstack(
+                (big_colors, np.full((big_colors.shape[0], 1), opacity))
+            )
+        else:
+            big_colors[:, 3] *= opacity
+
+
+    geo = buffer_to_geometry(
+        indices=big_faces.astype("int32"),
+        positions=big_vertices.astype("float32"),
+        texcoords=big_vertices.astype("float32"),
+        colors=big_colors.astype("float32"),
+    )
+    mat = _create_mesh_material(material=material, enable_picking=enable_picking)
+    obj = create_mesh(geometry=geo, material=mat)
+    obj.local.position = centers[0]
+
+    obj.prim_count = prim_count
+
+    return obj