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  • CairoContext::moveTo()

    (PECL cairo >= 0.1.0)

    The moveTo purpose

    说明

    面向对象风格(method):

    publicCairoContext::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()