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Docs: LazUtils/graphmath. Updates content in PolyBezierArcPoints. Changes in 1014cd33. Issue #41400.

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dsiders 2025-02-03 14:27:37 -05:00
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docs/xml/lazutils/graphmath.xml
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@ -869,27 +869,24 @@ Pointer Array of TPoints for use with Polyline or Polygon.
</short>
<descr>
<p>
Use PolyBezierArcPoints to convert an Arc and ArcLength into a Pointer
Array of TPoints for use with Polyline or Polygon. The Rotation parameter
accepts a Rotation-Angle for a rotated Ellipse - for a non-rotated ellipse
this value would be 0, or 360. The result is an Approximation based on 1 or
more Beziers. If the AngleLength is greater than 45 degrees, it recursively
breaks the Arc into Arcs of 45 degrees or less, and converts them into
Beziers with BezierArcPoints.
Use PolyBezierArcPoints to convert an arc between two angles Angle1 and Angle2
into a pointer array of TPoints for use with Polyline or Polygon.
The Rotation parameter accepts a rotation angle for a rotated ellipse - for
a non-rotated ellipse this value would be 0, or 360*16.
</p>
<p>
The angles are specified in 1/16th of a degree. For example, a full circle
equals 5760 (16*360).
</p>
<p>
Positive values in Angle and AngleLength mean counter-clockwise while
negative values mean clockwise direction. Zero degrees is at the 3
o&apos;clock position.
The result is an approximation based on 1 or more Beziers. If the angle length
is greater than 45*16 degrees, it recursively breaks the arc into arcs of
45*16 degrees or less, and converts them into beziers with BezierArcPoints.
The angles are 1/16th of a degree. For example, a full circle equals
5760 (16*360).
</p>
<p>
Positive values in Angle1 and Angle2 mean counter-clockwise while negative
values mean clockwise direction. Zero degrees is at the 3'o clock position.
Points is automatically initialized, so any existing information is lost,
and the array starts at 0. Points should ALWAYS be Freed when done by
calling to ReallocMem(Points, 0).
and the array starts at 0. Points should ALWAYS be freed when done by calling
to ReallocMem(Points, 0).
</p>
</descr>
<seealso/>