Documentation Index | From module rabbyt.vertexarrays.

VertexArrayIndexes

VertexArrayIndexes([sequence])

Provides a way to list by indexes the vertexes to be rendered.

This is useful if you have multiple primitives sharing a vertex, and you want to either save memory or make it easier to modify the data.

Methods

append

append(index)

Appends an index to be drawn.

extend

render

render(vertex_array, [start, end, enable_arrays, safety_check])

This renders the vertexes in vertex_array, which should be an instance of VertexArray.

start and end define which vertexes to render, and default to rendering all of them.

If enable_arrays is True, (the default,) vertex_array.enable_arrays() will be called automatically, along with pushing and popping the client state. If you are rendering many VertexArrayIndexes off of the same VertexArray, you might see a small speedup by only calling enable_arrays() on the VertexArray once.

If safety_check is True, (the default,) the safety_check() method will be called with the length of the VertexArray. This prevents segmentation faults, but adds a little overhead. You can set this to False once your code is debugged. (Just remember to look if you ever get a segfault!)

safety_check

safety_check(max_index)

Loops through all of the indexes and raises ValueError if one is greater than or equal to max_index.

Properties

mode

If non zero, this mode will override the VertexArray's mode when render is called.