cairoGetCurrentPoint: cairoGetCurrentPoint
In RGtk2: R Bindings for Gtk 2.8.0 and Above
Description
Usage
Arguments
Details
Author(s)
Description
Gets the current point of the current path, which is
conceptually the final point reached by the path so far.
Usage
1
cairoGetCurrentPoint(cr, x, y)
Arguments
cr
[Cairo] a cairo context
x
[numeric] return value for X coordinate of the current point
y
[numeric] return value for Y coordinate of the current point
Details
The current point is returned in the user-space coordinate
system. If there is no defined current point or if cr is in an
error status, x and y will both be set to 0.0. It is possible to
check this in advance with cairoHasCurrentPoint.
Most path construction functions alter the current point. See the
following for details on how they affect the current point:
cairoNewPath, cairoNewSubPath,
cairoAppendPath, cairoClosePath,
cairoMoveTo, cairoLineTo, cairoCurveTo,
cairoRelMoveTo, cairoRelLineTo, cairoRelCurveTo,
cairoArc, cairoArcNegative, cairoRectangle,
cairoTextPath, cairoGlyphPath, cairoStrokeToPath().
Some functions use and alter the current point but do not
otherwise change current path:
cairoShowText.
Some functions unset the current path and as a result, current point:
cairoFill, cairoStroke.
Author(s)
Derived by RGtkGen from GTK+ documentation
RGtk2 documentation built on Oct. 14, 2021, 5:08 p.m.
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Description Usage Arguments Details Author(s)
Description
Gets the current point of the current path, which is conceptually the final point reached by the path so far.
Usage
1 | cairoGetCurrentPoint(cr, x, y)
|
Arguments
|
[ |
|
[numeric] return value for X coordinate of the current point |
|
[numeric] return value for Y coordinate of the current point |
Details
The current point is returned in the user-space coordinate
system. If there is no defined current point or if cr is in an
error status, x and y will both be set to 0.0. It is possible to
check this in advance with cairoHasCurrentPoint.
Most path construction functions alter the current point. See the
following for details on how they affect the current point:
cairoNewPath, cairoNewSubPath,
cairoAppendPath, cairoClosePath,
cairoMoveTo, cairoLineTo, cairoCurveTo,
cairoRelMoveTo, cairoRelLineTo, cairoRelCurveTo,
cairoArc, cairoArcNegative, cairoRectangle,
cairoTextPath, cairoGlyphPath, cairoStrokeToPath().
Some functions use and alter the current point but do not
otherwise change current path:
cairoShowText.
Some functions unset the current path and as a result, current point:
cairoFill, cairoStroke.
Author(s)
Derived by RGtkGen from GTK+ documentation
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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