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ImagickDraw::pathCurveToQuadraticBezierAbsolute

(PECL imagick 2.0.0)

ImagickDraw::pathCurveToQuadraticBezierAbsolute — Draws a quadratic Bezier curve

Description

代码语言:javascript
复制
bool ImagickDraw::pathCurveToQuadraticBezierAbsolute ( float $x1 , float $y1 , float $x , float $y )

Warning

This function is currently not documented; only its argument list is available.

Draws a quadratic Bezier curve from the current point to (x,y) using (x1,y1) as the control point using absolute coordinates. At the end of the command, the new current point becomes the final (x,y) coordinate pair used in the polybezier.

Parameters

x1

x coordinate of the control point

y1

y coordinate of the control point

x

x coordinate of the end point

y

y coordinate of the end point

Return Values

No value is returned.

Examples

Example #1 ImagickDraw::pathCurveToQuadraticBezierAbsolute()

代码语言:javascript
复制
<?php
function?pathCurveToQuadraticBezierAbsolute($strokeColor,?$fillColor,?$backgroundColor)?{

????$draw?=?new?\ImagickDraw();

????$draw->setStrokeOpacity(1);
????$draw->setStrokeColor($strokeColor);
????$draw->setFillColor($fillColor);

????$draw->setStrokeWidth(2);
????$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();

}

?>

← ImagickDraw::pathCurveToAbsolute

ImagickDraw::pathCurveToQuadraticBezierRelative →

代码语言:txt
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 ? 1997–2017 The PHP Documentation Group

Licensed under the Creative Commons Attribution License v3.0 or later.

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