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This document uses PHP Chinese website manual Release
(PECL cairo >= 0.1.0)
CairoContext::hasCurrentPoint -- cairo_has_current_point — The hasCurrentPoint purpose
面向对象风格 (method):
过程化风格:
$context
)Returns whether a current point is defined on the current path. See CairoContext::getCurrentPoint() for details on the current point.
context
A valid CairoContext object.
Whether a current point is defined
Example #1 面向对象风格
<?php
$s = new CairoImageSurface ( CairoFormat :: ARGB32 , 100 , 100 );
$c = new CairoContext ( $s );
var_dump ( $c -> hasCurrentPoint ());
$c -> moveTo ( 10 , 10 );
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_IMAGE , 100 , 100 );
$c = cairo_create ( $s );
var_dump ( cairo_has_current_point ( $c ));
cairo_move_to ( $c , 10 , 10 );
var_dump ( cairo_has_current_point ( $c ));
?>
以上例程会输出:
bool(false) bool(true)