文字
CairoContext::moveTo
cairo_move_to
(PECL cairo >= 0.1.0)
CairoContext::moveTo -- cairo_move_to — The moveTo purpose
说明
面向对象风格 (method):
public void CairoContext::moveTo
( string
$x
, string $y
)过程化风格:
void cairo_move_to
( CairoContext
$context
, string $x
, string $y
)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 :: ARGB32 , 100 , 100 );
$c = new CairoContext ( $s );
$c -> setSourceRgb ( 0 , 0 , 0 );
$c -> paint ();
// Move 10 pixels across, and 10 pixels down
$c -> moveTo ( 10 , 10 );
$c -> lineTo ( 90 , 90 );
$c -> setLineWidth ( 2 );
$c -> setSourceRgb ( 1 , 1 , 1 );
$c -> stroke ();
// Move 90 pixels across, and 10 pixels down
$c -> moveTo ( 90 , 10 );
$c -> lineTo ( 10 , 90 );
$c -> setLineWidth ( 2 );
$c -> setSourceRgb ( 1 , 1 , 1 );
$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_IMAGE , 100 , 100 );
$c = cairo_create ( $s );
cairo_set_source_rgb ( $c , 0 , 0 , 0 );
cairo_paint ( $c );
// Move 10 pixels across, and 10 pixels down
cairo_move_to ( $c , 10 , 10 );
cairo_line_to ( $c , 90 , 90 );
cairo_set_line_width ( $c , 2 );
cairo_set_source_rgb ( $c , 1 , 1 , 1 );
cairo_stroke ( $c );
// Move 90 pixels across, and 10 pixels down
cairo_move_to ( $c , 90 , 10 );
cairo_line_to ( $c , 10 , 90 );
cairo_set_line_width ( $c , 2 );
cairo_set_source_rgb ( $c , 1 , 1 , 1 );
cairo_stroke ( $c );
cairo_surface_write_to_png ( $s , dirname ( __FILE__ ) . '/cairo_move_to.png' );
?> 以上例程的输出类似于：
...
参见
- Classname::Method()