CairoContext::hasCurrentPoint

cairo_has_current_point

(PECL cairo >= 0.1.0)

CairoContext::hasCurrentPoint -- cairo_has_current_pointThe hasCurrentPoint purpose

说明

面向对象风格 (method):

public bool CairoContext::hasCurrentPoint ( void )

过程化风格:

bool cairo_has_current_point ( CairoContext $context )

Returns whether a current point is defined on the current path. See CairoContext::getCurrentPoint() for details on the current point.

参数

context

A valid CairoContext object.

返回值

Whether a current point is defined

范例

Example #1 面向对象风格

<?php

$s 
= new CairoImageSurface(CairoFormat::ARGB32100100);
$c = new CairoContext($s);

var_dump($c->hasCurrentPoint());

$c->moveTo(1010);

var_dump($c->hasCurrentPoint());

?>

以上例程会输出:

bool(false)
bool(true)

Example #2 过程化风格

<?php

$s 
cairo_image_surface_create(CAIRO_SURFACE_TYPE_IMAGE100100);
$c cairo_create($s);

var_dump(cairo_has_current_point($c));

cairo_move_to($c1010);

var_dump(cairo_has_current_point($c));

?>

以上例程会输出:

bool(false)
bool(true)

参见

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