## NAME

hwQuads - define one or more quadrilaterals

## INHERITS FROM

## PROPERTIES

Data |
*F |
The list of vertices (4 for each quad), with from 3 to 11
floats per vertex |

OptFlags |
1I |
The optimization flags; see hw for details |

GraphN |
1I |
Sub-tesselation parameter for each Quad |

GraphM |
1I |
Sub-tesselation parameter for each Quad |

## DEFAULTS

OptFlags |
hwDefaultOptFlags |

Data |
NULL |

GraphN |
1 |

GraphM |
1 |

## DESCRIPTION

The hwQuads class takes a list of vertices and displays them as a
number of closed polygonal surfaces. The Data pointer is an array of
hwFloat values; the number of values must be equal to 4*n*FPV, where
FPV is the number of hwFloats present per vertex as described by the
hwVertex man page. The number n is derived from the size of the Data
array, and is the number of quadrilaterals, each of which must have 4
vertices.

## C EXAMPLE

/* Draw a square two-sided polygon, using one quadrilateral */
hwObject
quads;
hwFloat
verts[] = {0,0,0, 0,1,0, 1,1,0, 1,0,0};
quads = hwQuads->create( hwQuads );
quads->modify( quads, hwStrData, HW_MAKE_TYPE(HW_TYPE_FLOAT,4*3), verts );
HW_MODIFY_1B( quads, hwStrTwoSided, HW_TRUE );
quads->draw( quads );
quads->destroy( quads );

## OBJECT FILE EXAMPLE

# A square two-sided polygon using two quadrilaterals
hwQuads quads {
TwoSided = True
Data = {0,0,0, 0,1,0, 1,1,0, 1,0,0}
}

## SEE ALSO

hw, hwSurface, hwOrient, hwVertex