php教程

CairoContext::moveTo

cairo_move_to

(PECL cairo >= 0.1.0)

CairoContext::moveTo -- cairo_move_toThe moveTo purpose

说明

面向对象风格 (method):

public CairoContext::moveTo ( float $x , float $y ) : void

过程化风格:

cairo_move_to ( CairoContext $context , float $x , float $y ) : void

Begin a new sub-path. After this call the current point will be (x, y).

参数

context

A valid CairoContext object.

x

The x coordinate of the new position.

y

The y coordinate of the new position

返回值

没有返回值。

范例

Example #1 面向对象风格

<?php

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

$c->setSourceRgb(000);
$c->paint();

// Move 10 pixels across, and 10 pixels down
$c->moveTo(1010);
$c->lineTo(9090);
$c->setLineWidth(2);
$c->setSourceRgb(111);
$c->stroke();

// Move 90 pixels across, and 10 pixels down
$c->moveTo(9010);
$c->lineTo(1090);
$c->setLineWidth(2);
$c->setSourceRgb(111);
$c->stroke();

$s->writeToPng(dirname(__FILE__) . '/CairoContext_moveTo.png');
?>

以上例程的输出类似于:

...

Example #2 过程化风格

<?php

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

cairo_set_source_rgb($c000);
cairo_paint($c);

// Move 10 pixels across, and 10 pixels down
cairo_move_to($c1010);
cairo_line_to($c9090);
cairo_set_line_width($c2);
cairo_set_source_rgb($c111);
cairo_stroke($c);

// Move 90 pixels across, and 10 pixels down
cairo_move_to($c9010);
cairo_line_to($c1090);
cairo_set_line_width($c2);
cairo_set_source_rgb($c111);
cairo_stroke($c);

cairo_surface_write_to_png($sdirname(__FILE__) . '/cairo_move_to.png');
?>

以上例程的输出类似于:

...

参见

  • Classname::Method()

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