Prism¶

Qualified name: algan.mobs.shapes\_3d.Prism

class Prism(width=3, height=2, depth=1, **kwargs)[source]¶

Bases: Polyhedron

A right rectangular prism – a box – built from six flat faces.

Unlike the curved shapes, a Prism is a Polyhedron: its faces are already flat, so they are their own triangles and nothing is tessellated per frame.

Parameters:

width – Side length along the world x axis, in world units. Defaults to 3.
height – Side length along the world y axis, in world units. Defaults to 2.
depth – Side length along the world z axis, in world units. Defaults to 1. The box is centered on the Mob’s location, so each side extends half its length either way.
**kwargs – Passed to Polyhedron. fill_color, fill_opacity and stroke_width are Manim’s face-styling names and are forwarded into faces_config rather than applied to the Mob.

Examples

A wide, flat box, useful as a floor:

Example: Example1Prism ¶

from algan import *

Prism(width=3, height=0.2, depth=2, fill_color=BLUE).spawn()

Scene.save_video()

Methods

Attributes

`animation_manager`	This mob's scene-owned animation manager.
`basis`	The Mob's orientation and scale, as a flattened 3x3 matrix of shape `(*, 9)`.
`casts_shadows`	Whether this Mob's geometry blocks light on its way from a light source to another surface -- whether it casts a shadow.
`children`	The Mobs attached below this one, in attachment order.
`closed_shell`	Whether this Mob's triangles form a CLOSED shell -- every camera ray that enters the geometry crosses a second time on its way out.
`draws_descendants`	`get_render_primitives` below hands the renderer every face under one `_mesh_key`, and nothing else -- so the faces are this Mob's internals rather than Mobs of their own, and the vertex Dot3D``s and edge Mobs under ``self.graph (kept for Manim parity, where `graph_config` styles them) are geometry it owns but never puts on screen.
`forward`	Get the direction the Mob is facing.
`lifespan`	This mob's [spawn, despawn) interval on its Scene timeline (a `Lifespan`).
`location`	The Mob's position in world space, shape `(*, 3)`.
`normalized_basis`	The Mob's orientation with scale divided out, shape `(*, 9)`.
`parents`	The Mobs this one is attached to, in attachment order.
`receives_shadows`	Whether this Mob's surfaces are darkened by shadows cast onto them.
`right`	Get the Mob's own rightward direction.
`scale_coefficient`	The Mob's scale along its own right, up and forward axes, shape `(*, 3)`.
`two_sided`	Whether this Mob's geometry should be lit from whichever side the ray arrives on.
`up`	Get the Mob's own upward direction.
`x`	The Mob's x coordinate in world units, shape `(*, 1)`.
`xy`	The Mob's x and y coordinates in world units, shape `(*, 2)`.
`y`	The Mob's y coordinate in world units, shape `(*, 1)`.
`z`	The Mob's z coordinate in world units, shape `(*, 1)`.