collada.geometry.Geometry

class collada.geometry.Geometry(collada, id, name, sourcebyid, primitives=None, xmlnode=None, double_sided=False)

Bases: collada.common.DaeObject

A class containing the data coming from a COLLADA <geometry> tag

__init__(collada, id, name, sourcebyid, primitives=None, xmlnode=None, double_sided=False)

Create a geometry instance

Parameters:

• collada (collada.Collada) – The collada object this geometry belongs to
• id (str) – A unique string identifier for the geometry
• name (str) – A text string naming the geometry
• sourcebyid – A list of collada.source.Source objects or a dictionary mapping source ids to the actual objects
• primitives (list) – List of primitive objects contained within the geometry. Do not set this argument manually. Instead, create a collada.geometry.Geometry first and then append to primitives with the create* functions.
• xmlnode – When loaded, the xmlnode it comes from.
• double_sided (bool) – Whether or not the geometry should be rendered double sided

Methods

__init__(collada, id, name, sourcebyid[, ...])	Create a geometry instance
bind(matrix, materialnodebysymbol)	Binds this geometry to a transform matrix and material mapping.
createLineSet(indices, inputlist, materialid)	Create a set of lines for use in this geometry instance.
createPolylist(indices, vcounts, inputlist, ...)	Create a polylist for use with this geometry instance.
createPolygons(indices, inputlist, materialid)	Create a polygons for use with this geometry instance.
createTriangleSet(indices, inputlist, materialid)	Create a set of triangles for use in this geometry instance.
load(collada, localscope, node)
save()	Saves the geometry back to xmlnode

collada = None

The collada.Collada object this geometry belongs to

id = None

The unique string identifier for the geometry

name = None

The text string naming the geometry

double_sided = None

A boolean indicating whether or not the geometry should be rendered double sided

sourceById = None

A dictionary containing collada.source.Source objects indexed by their id.

primitives = None

List of primitives (base type collada.primitive.Primitive) inside this geometry.

xmlnode = None

ElementTree representation of the geometry.

createLineSet(indices, inputlist, materialid)

Create a set of lines for use in this geometry instance.

Parameters:

• indices (numpy.array) – unshaped numpy array that contains the indices for the inputs referenced in inputlist
• inputlist (collada.source.InputList) – The inputs for this primitive
• materialid (str) – A string containing a symbol that will get used to bind this lineset to a material when instantiating into a scene

Return type:

collada.lineset.LineSet

createTriangleSet(indices, inputlist, materialid)

Create a set of triangles for use in this geometry instance.

Parameters:

• indices (numpy.array) – unshaped numpy array that contains the indices for the inputs referenced in inputlist
• inputlist (collada.source.InputList) – The inputs for this primitive
• materialid (str) – A string containing a symbol that will get used to bind this triangleset to a material when instantiating into a scene

Return type:

collada.triangleset.TriangleSet

createPolylist(indices, vcounts, inputlist, materialid)

Create a polylist for use with this geometry instance.

Parameters:

• indices (numpy.array) – unshaped numpy array that contains the indices for the inputs referenced in inputlist
• vcounts (numpy.array) – unshaped numpy array that contains the vertex count for each polygon in this polylist
• inputlist (collada.source.InputList) – The inputs for this primitive
• materialid (str) – A string containing a symbol that will get used to bind this polylist to a material when instantiating into a scene

Return type:

collada.polylist.Polylist

createPolygons(indices, inputlist, materialid)

Create a polygons for use with this geometry instance.

Parameters:

• indices (numpy.array) – list of unshaped numpy arrays that each contain the indices for a single polygon
• inputlist (collada.source.InputList) – The inputs for this primitive
• materialid (str) – A string containing a symbol that will get used to bind this polygons to a material when instantiating into a scene

Return type:

collada.polygons.Polygons

save()

Saves the geometry back to xmlnode

bind(matrix, materialnodebysymbol)

Binds this geometry to a transform matrix and material mapping. The geometry’s points get transformed by the given matrix and its inputs get mapped to the given materials.

Parameters:

• matrix (numpy.array) – A 4x4 numpy float matrix
• materialnodebysymbol (dict) – A dictionary with the material symbols inside the primitive assigned to collada.scene.MaterialNode defined in the scene

Return type:

collada.geometry.BoundGeometry