CairoContext::moveTo()
(PECL cairo >= 0.1.0)
The 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::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()