Node

moderngl_window.scene.Node[source]

A generic scene node containing a mesh or camera and/or a container for other nodes. Nodes and their children represents the scene tree.

Methods

Node.__init__(name=None, camera=None, mesh=None, matrix=None)[source]

Create a node.

Keyword Arguments

  • name – Name of the node

  • camera – Camera to store in the node

  • mesh – Mesh to store in the node

  • matrix – The node’s matrix

Node.add_child(node)[source]

Add a child to this node

Parameters

node (Node) – Node to add as a child

Node.draw(projection_matrix=None, camera_matrix=None, time=0)[source]

Draw node and children.

Keyword Arguments

  • projection_matrix (bytes) – projection matrix

  • camera_matrix (bytes) – camera_matrix

  • time (float) – The current time

Node.draw_bbox(projection_matrix, camera_matrix, program, vao)[source]

Draw bounding box around the node and children.

Keyword Arguments

  • projection_matrix (bytes) – projection matrix

  • camera_matrix (bytes) – camera_matrix

  • program (moderngl.Program) – The program to render the bbox

  • vao – The vertex array representing the bounding box

Node.draw_wireframe(projection_matrix, camera_matrix, program)[source]

Render the node as wireframe.

Keyword Arguments

  • projection_matrix (bytes) – projection matrix

  • camera_matrix (bytes) – camera_matrix

  • program (moderngl.Program) – The program to render wireframe

Node.calc_global_bbox(view_matrix, bbox_min, bbox_max)[source]

Recursive calculation of scene bbox.

Keyword Arguments

  • view_matrix (numpy.ndarray) – view matrix

  • bbox_min – min bbox values

  • bbox_max – max bbox values

Node.calc_model_mat(model_matrix)[source]

Calculate the model matrix related to all parents.

Parameters

model_matrix (numpy.ndarray) – model matrix

Attributes

Node.name

Get or set the node name

Type

str

Node.mesh

The mesh if present

Type

Mesh

Node.camera

The camera if present

Type

Camera

Node.matrix

Note matrix (local)

Type

numpy.ndarray

Node.matrix_global

The global node matrix containing transformations from parent nodes

Type

numpy.ndarray

Node.children

List of children

Type

list