collada.primitive.Primitive

class collada.primitive.Primitive

Bases: collada.DaeObject

Base class for all primitive sets like TriangleSet, LineSet, Polylist, etc.

__init__()

x.__init__(...) initializes x; see help(type(x)) for signature

Methods

bind(matrix, materialnodebysymbol)	Binds this primitive to a transform matrix and material mapping.
load(collada, localscope, node)	Load and return a class instance from an XML node.
save()

Attributes

normal	Read-only numpy.array of size Nx3 where N is the number of normal values in the
normal_index	Read-only numpy.array of size Nx3 where N is the number of vertices in the primitive.
texcoord_indexset	Read-only tuple of texture coordinate index arrays.
texcoordset	Read-only tuple of texture coordinate arrays.
vertex	Read-only numpy.array of size Nx3 where N is the number of vertex points in the
vertex_index	Read-only numpy.array of size Nx3 where N is the number of vertices in the primitive.

vertex

Read-only numpy.array of size Nx3 where N is the number of vertex points in the primitive’s vertex source array.

normal

Read-only numpy.array of size Nx3 where N is the number of normal values in the primitive’s normal source array.

texcoordset

Read-only tuple of texture coordinate arrays. Each value is a numpy.array of size Nx2 where N is the number of texture coordinates in the primitive’s source array.

textangentset

Read-only tuple of texture tangent arrays. Each value is a numpy.array of size Nx3 where N is the number of texture tangents in the primitive’s source array.

texbinormalset

Read-only tuple of texture binormal arrays. Each value is a numpy.array of size Nx3 where N is the number of texture binormals in the primitive’s source array.

vertex_index

Read-only numpy.array of size Nx3 where N is the number of vertices in the primitive. To get the actual vertex points, one can use this array to select into the vertex array, e.g. vertex[vertex_index].

normal_index

Read-only numpy.array of size Nx3 where N is the number of vertices in the primitive. To get the actual normal values, one can use this array to select into the normals array, e.g. normal[normal_index].

texcoord_indexset

Read-only tuple of texture coordinate index arrays. Each value is a numpy.array of size Nx2 where N is the number of vertices in the primitive. To get the actual texture coordinates, one can use the array to select into the texcoordset array, e.g. texcoordset[0][texcoord_indexset[0]] would select the first set of texture coordinates.

textangent_indexset

Read-only tuple of texture tangent index arrays. Each value is a numpy.array of size Nx3 where N is the number of vertices in the primitive. To get the actual texture tangents, one can use the array to select into the textangentset array, e.g. textangentset[0][textangent_indexset[0]] would select the first set of texture tangents.

texbinormal_indexset

Read-only tuple of texture binormal index arrays. Each value is a numpy.array of size Nx3 where N is the number of vertices in the primitive. To get the actual texture binormals, one can use the array to select into the texbinormalset array, e.g. texbinormalset[0][texbinormal_indexset[0]] would select the first set of texture binormals.

bind(matrix, materialnodebysymbol)

Binds this primitive to a transform matrix and material mapping. The primitive’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.primitive.Primitive

getInputList()

Gets a collada.source.InputList representing the inputs from a primitive

static load(collada, localscope, node)

Load and return a class instance from an XML node.

Inspect the data inside node, which must match this class tag and create an instance out of it.

Parameters:

• collada (collada.Collada) – The collada file object where this object lives
• localscope (dict) – If there is a local scope where we should look for local ids (sid) this is the dictionary. Otherwise empty dict ({})
• node – An Element from python’s ElementTree API