Music21j Class: PixelMap

Class: PixelMap

music21 .streamInteraction. PixelMap

new PixelMap(mapper, offset)

A PixelMap maps one offset to one x location.

The offset does NOT have to be the offset of an element. Offsets are generally
measured from the start of the flat stream.

Parameters:

Name	Type	Description
`mapper`	music21.streamInteraction.PixelMapper	should eventually be a weakref...
`offset`	number	the offset that is being mapped.

Properties:

Name	Type	Description
`elements`	Array.<music21.base.Music21Object>	elements being mapped to.
`offset`	number	the offset inputted
`x`	number	x value in pixels for this offset
`systemIndex`	Int	the systemIndex at which this offset appears.

Source:

music21/streamInteraction.js, line 407

Example

// not a particularly realistic example, since it requires so much setup...
var s = new music21.tinyNotation.TinyNotation('3/4 c4 d8 e f4 g4 a4 b4');
var can = s.appendNewCanvas();
var pmapper = new music21.streamInteraction.PixelMapper(s);
var pmapA = new music21.streamInteraction.PixelMap(pmapper, 2.0);
pmapA.elements = [s.flat.get(3)];
pmapA.offset;
// 2
pmapA.x;
// 149.32...
pmapA.systemIndex
// 0