ImagickDraw::pathCurveToQuadraticBezierSmoothRelative
Draws a quadratic Bezier curve
Description
public bool ImagickDraw::pathCurveToQuadraticBezierSmoothRelative(float $x
, float $y
)
WarningThis function is
currently not documented; only its argument list is available.
Draws a quadratic Bezier curve (using relative coordinates) from the
current point to (x, y). The control point is assumed to be the reflection
of the control point on the previous command relative to the current point.
(If there is no previous command or if the previous command was not a
DrawPathCurveToQuadraticBezierAbsolute,
DrawPathCurveToQuadraticBezierRelative,
DrawPathCurveToQuadraticBezierSmoothAbsolut or
DrawPathCurveToQuadraticBezierSmoothRelative, assume the control point is
coincident with the current point). At the end of the command, the new
current point becomes the final (x, y) coordinate pair used in the
polybezier.
This function cannot be used to continue a cubic Bezier curve smoothly. It can only continue from a quadratic curve smoothly.
Parameters
-
x
-
ending x coordinate
-
y
-
ending y coordinate
Return Values
No value is returned.
Examples
Example #1
ImagickDraw::pathCurveToQuadraticBezierSmoothRelative example
<?php
$draw = new \ImagickDraw();
$draw->setStrokeOpacity(1);
$draw->setStrokeColor("black");
$draw->setFillColor("blue");
$draw->setStrokeWidth(2);
$draw->setFontSize(72);
$draw->pathStart();
$draw->pathMoveToAbsolute(50,250);
// This specifies a quadratic bezier curve with the current position as the start
// point, the control point is the first two params, and the end point is the last two params.
$draw->pathCurveToQuadraticBezierAbsolute(
150,50,
250,250
);
// This specifies a quadratic bezier curve with the current position as the start
// point, the control point is mirrored from the previous curves control point
// and the end point is defined by the x, y values.
$draw->pathCurveToQuadraticBezierSmoothAbsolute(
450,250
);
// This specifies a quadratic bezier curve with the current position as the start
// point, the control point is mirrored from the previous curves control point
// and the end point is defined relative from the current position by the x, y values.
$draw->pathCurveToQuadraticBezierSmoothRelative(
200,-100
);
$draw->pathFinish();
$imagick = new \Imagick();
$imagick->newImage(700, 500, $backgroundColor);
$imagick->setImageFormat("png");
$imagick->drawImage($draw);
header("Content-Type: image/png");
echo $imagick->getImageBlob();
?>