(PECL cairo >= 0.1.0)
CairoContext::moveTo -- cairo_move_to — The moveTo purpose
面向对象风格 (method):
$x
, string $y
)过程化风格:
Begin a new sub-path. After this call the current point will be (x, y).
context
A valid CairoContext object.
x
The x coordinate of the new position.
y
The y coordinate of the new position
没有返回值。
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：
...