Inside Macintosh: QuickDraw GX Graphics /

Chapter 3 - Geometric Styles / Geometric Styles Reference

Functions / Getting and Setting Curve Error

GXGetStyleCurveError

You can use the GXGetStyleCurveError function to determine the curve error of a style object.

Fixed GXGetStyleCurveError(gxStyle source);

source

A reference to the style object whose curve error you want to determine.

function result

The curve error of the source style object.

DESCRIPTION

When a path shape has a curve error of 0, QuickDraw GX does not approximate the path shape with a polygon shape when converting it to a polygon. Instead, QuickDraw GX simply removes off-curve control points, as shown in "Using Curve Error When Converting Paths to Polygons" on page 3-45.

ERRORS, WARNINGS, AND NOTICES

Errors
out_of_memory
style_is_nil

SEE ALSO

For a discussion of curve error, see "Curve Error" on page 3-14.

For examples of using curve error, see "Using Curve Error When Converting Paths to Polygons" on page 3-45 and "Using Curve Error When Reducing Shapes" on page 3-49.

To change the curve error of a style object, use the GXSetStyleCurveError function, which is described in the next section.

To examine the curve error of a style object associated with a particular shape, use the GXGetShapeCurveError function, which is described on page 3-117. To change the curve error of a style object associated with a particular shape, use the GXSetShapeCurveError function, which is described on page 3-118.

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