rfm2.vp.vp2 Namespace Reference

Classes
class	RfmError

Functions
def	maya_useNewAPI
def	build_vertex_buffer
def	lines
def	line_strip
def	line_loop
def	indexed_lines
def	triangle_strip
def	triangle_strip_grid
def	build_index_buffer
def	make_new_sampler

Variables
dictionary	DEFAULT_LIGHT_DESC

Detailed Description

VP2 utilities.

Function Documentation

def rfm2.vp.vp2.build_index_buffer	(		method,
			idx_buffer,
			num_vtxs,
			start_idx,
			kwargs
	)

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def rfm2.vp.vp2.build_vertex_buffer	(		vtx_buffer,
			vtxs,
			data_width,
			scale = 1.0
	)

Called by Maya's populateGeometry() method to initialize and fill a VP2
vertex buffer

Args:
- vtx_buffer (MVertexBuffer): the VP2 vtx buffer
- vtxs (list): all the vertices, static and dynamic
- data_width (int): how many floats per vertex

Kwargs:
- scale (float): the representation scale, usually driven by a maya
attribute.

Raises:
- RfmError: If the data_width is not 2 or 3.

def rfm2.vp.vp2.indexed_lines	(		idx_buffer,
			start_idx,
			idx_list
	)

Fills an index buffer to create lines with explicit indices.

Arguments:
    idx_buffer {MIndexBuffer} -- A maya index buffer
    start_idx {int} -- Index of the primitive's first vertex
    idx_list {list} -- List of indices describing line segments

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def rfm2.vp.vp2.line_loop	(		idx_buffer,
			num_vtxs,
			start_idx
	)

Fills an index buffer to create a line loop.

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def rfm2.vp.vp2.line_strip	(		idx_buffer,
			num_vtxs,
			start_idx
	)

Fills an index buffer to create a line strip.

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def rfm2.vp.vp2.lines	(		idx_buffer,
			num_vtxs,
			start_idx,
			loop = False
	)

Fills an index buffer to create many lines.
final number of vertices is: num_vtxs * 2 - 2 if loop is False

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def rfm2.vp.vp2.make_new_sampler

(

)

def rfm2.vp.vp2.maya_useNewAPI

(

)

The presence of this function tells Maya that the plugin produces, and
expects to be passed, objects created using the Maya Python API 2.0.

def rfm2.vp.vp2.triangle_strip	(		idx_buffer,
			num_vtxs,
			start_idx
	)

Fills an index buffer, assuming the vertex buffer contains a single
closed shape with clockwise vertex order (see vertex ordering in example
below).

Example:
~~~~
0 1 2 3      0 1 2 3
         ->  |/|/|/|  -> [0, 7, 1, 6, 2, 5, 3, 4]
7 6 5 4      7 6 5 4
~~~~

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def rfm2.vp.vp2.triangle_strip_grid	(		idx_buffer,
			start_idx,
			cols,
			rows
	)

Fills a index buffer, assuming the vertex buffer has been populated in a
very specific way (see example below). This is typically used to draw
spheres or any other grid-like topology.

Example:

cols = 3 and rows = 3. The vertex ordering is obviously important...

\t  0 1 2      0 1 2
\t             |/|/|
\t  3 4 5  ->  3 4 5  ->  [0, 3, 1, 4, 2, 5, 5,
\t             |/|/|       3, 3, 6, 4, 7, 5, 8]
\t  6 7 8      6 7 8

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Variable Documentation

dictionary rfm2.vp.vp2.DEFAULT_LIGHT_DESC