View Source wxGraphicsPath (wx v2.4.2)
Functions for wxGraphicsPath class
A wxGraphicsPath is a native representation of a geometric path. The
contents are specific and private to the respective renderer. Instances are
reference counted and can therefore be assigned as usual. The only way to get a
valid instance is by using wxGraphicsContext:createPath/1 or
wxGraphicsRenderer:createPath/1.
This class is derived (and can use functions) from: wxGraphicsObject
wxWidgets docs: wxGraphicsPath
Summary
Functions
Adds an arc of a circle.
Adds an arc (of a circle with radius r) that is tangent to the line connecting
current point and (x1, y1) and to the line connecting (x1, y1) and
(x2, y2).
Appends a circle around (x,y) with radius r as a new closed subpath.
Adds a cubic bezier curve from the current point, using two control points and an end point.
Adds a cubic bezier curve from the current point, using two control points and an end point.
Appends an ellipse fitting into the passed in rectangle as a new closed subpath.
Adds a straight line from the current point to p.
Adds a straight line from the current point to (x,y).
Adds another path onto the current path.
Adds a quadratic bezier curve from the current point, using a control point and an end point.
Appends a rectangle as a new closed subpath.
Appends a rounded rectangle as a new closed subpath.
Closes the current sub-path.
Return: true if the point is within the path.
Return: true if the point is within the path.
Gets the bounding box enclosing all points (possibly including control points).
Gets the last point of the current path, (0,0) if not yet set.
Begins a new subpath at p.
Begins a new subpath at (x,y).
Transforms each point of this path by the matrix.
Types
-type wxGraphicsPath() :: wx:wx_object().
Functions
-spec addArc(This, X, Y, R, StartAngle, EndAngle, Clockwise) -> ok when This :: wxGraphicsPath(), X :: number(), Y :: number(), R :: number(), StartAngle :: number(), EndAngle :: number(), Clockwise :: boolean().
Adds an arc of a circle.
The circle is defined by the coordinates of its centre (x, y) or c and its
radius r. The arc goes from the starting angle startAngle to endAngle
either clockwise or counter-clockwise depending on the value of clockwise
argument.
The angles are measured in radians but, contrary to the usual mathematical
convention, are always clockwise from the horizontal axis.
If for clockwise arc endAngle is less than startAngle it will be
progressively increased by 2pi until it is greater than startAngle. If for
counter-clockwise arc endAngle is greater than startAngle it will be
progressively decreased by 2pi until it is less than startAngle.
If there is a current point set, an initial line segment will be added to the path to connect the current point to the beginning of the arc.
-spec addArcToPoint(This, X1, Y1, X2, Y2, R) -> ok when This :: wxGraphicsPath(), X1 :: number(), Y1 :: number(), X2 :: number(), Y2 :: number(), R :: number().
Adds an arc (of a circle with radius r) that is tangent to the line connecting
current point and (x1, y1) and to the line connecting (x1, y1) and
(x2, y2).
If the current point and the starting point of the arc are different, a straight
line connecting these points is also appended. If there is no current point
before the call to addArcToPoint/6 this function will behave as if preceded by
a call to MoveToPoint(0, 0). After this call the current point will be at the
ending point of the arc.
-spec addCircle(This, X, Y, R) -> ok when This :: wxGraphicsPath(), X :: number(), Y :: number(), R :: number().
Appends a circle around (x,y) with radius r as a new closed subpath.
After this call the current point will be at (x+r, y).
-spec addCurveToPoint(This, C1, C2, E) -> ok when This :: wxGraphicsPath(), C1 :: {X :: float(), Y :: float()}, C2 :: {X :: float(), Y :: float()}, E :: {X :: float(), Y :: float()}.
Adds a cubic bezier curve from the current point, using two control points and an end point.
If there is no current point before the call to addCurveToPoint/7 this
function will behave as if preceded by a call to MoveToPoint(c1).
-spec addCurveToPoint(This, Cx1, Cy1, Cx2, Cy2, X, Y) -> ok when This :: wxGraphicsPath(), Cx1 :: number(), Cy1 :: number(), Cx2 :: number(), Cy2 :: number(), X :: number(), Y :: number().
Adds a cubic bezier curve from the current point, using two control points and an end point.
If there is no current point before the call to addCurveToPoint/7 this
function will behave as if preceded by a call to MoveToPoint(cx1, cy1).
-spec addEllipse(This, X, Y, W, H) -> ok when This :: wxGraphicsPath(), X :: number(), Y :: number(), W :: number(), H :: number().
Appends an ellipse fitting into the passed in rectangle as a new closed subpath.
After this call the current point will be at (x+w, y+h/2).
-spec addLineToPoint(This, P) -> ok when This :: wxGraphicsPath(), P :: {X :: float(), Y :: float()}.
Adds a straight line from the current point to p.
If current point is not yet set before the call to addLineToPoint/3 this
function will behave as moveToPoint/3.
-spec addLineToPoint(This, X, Y) -> ok when This :: wxGraphicsPath(), X :: number(), Y :: number().
Adds a straight line from the current point to (x,y).
If current point is not yet set before the call to addLineToPoint/3 this
function will behave as moveToPoint/3.
-spec addPath(This, Path) -> ok when This :: wxGraphicsPath(), Path :: wxGraphicsPath().
Adds another path onto the current path.
After this call the current point will be at the added path's current point. For Direct2D the path being appended shouldn't contain a started non-empty subpath when this function is called.
-spec addQuadCurveToPoint(This, Cx, Cy, X, Y) -> ok when This :: wxGraphicsPath(), Cx :: number(), Cy :: number(), X :: number(), Y :: number().
Adds a quadratic bezier curve from the current point, using a control point and an end point.
If there is no current point before the call to addQuadCurveToPoint/5 this
function will behave as if preceded by a call to MoveToPoint(cx, cy).
-spec addRectangle(This, X, Y, W, H) -> ok when This :: wxGraphicsPath(), X :: number(), Y :: number(), W :: number(), H :: number().
Appends a rectangle as a new closed subpath.
After this call the current point will be at (x, y).
-spec addRoundedRectangle(This, X, Y, W, H, Radius) -> ok when This :: wxGraphicsPath(), X :: number(), Y :: number(), W :: number(), H :: number(), Radius :: number().
Appends a rounded rectangle as a new closed subpath.
If radius equals 0 this function will behave as addRectangle/5, otherwise
after this call the current point will be at (x+w, y+h/2).
-spec closeSubpath(This) -> ok when This :: wxGraphicsPath().
Closes the current sub-path.
After this call the current point will be at the joined endpoint of the sub-path.
-spec contains(This, C) -> boolean() when This :: wxGraphicsPath(), C :: {X :: float(), Y :: float()}.
-spec contains(This, X, Y) -> boolean() when This :: wxGraphicsPath(), X :: number(), Y :: number(); (This, C, [Option]) -> boolean() when This :: wxGraphicsPath(), C :: {X :: float(), Y :: float()}, Option :: {fillStyle, wx:wx_enum()}.
Return: true if the point is within the path.
-spec contains(This, X, Y, [Option]) -> boolean() when This :: wxGraphicsPath(), X :: number(), Y :: number(), Option :: {fillStyle, wx:wx_enum()}.
Return: true if the point is within the path.
-spec getBox(This) -> {X :: float(), Y :: float(), W :: float(), H :: float()} when This :: wxGraphicsPath().
Gets the bounding box enclosing all points (possibly including control points).
-spec getCurrentPoint(This) -> {X :: float(), Y :: float()} when This :: wxGraphicsPath().
Gets the last point of the current path, (0,0) if not yet set.
-spec moveToPoint(This, P) -> ok when This :: wxGraphicsPath(), P :: {X :: float(), Y :: float()}.
Begins a new subpath at p.
-spec moveToPoint(This, X, Y) -> ok when This :: wxGraphicsPath(), X :: number(), Y :: number().
Begins a new subpath at (x,y).
-spec transform(This, Matrix) -> ok when This :: wxGraphicsPath(), Matrix :: wxGraphicsMatrix:wxGraphicsMatrix().
Transforms each point of this path by the matrix.
For Direct2D the current path shouldn't contain a started non-empty subpath when this function is called.