CairoRadialGradient::__construct()

(PECL cairo >= 0.1.0)

The __construct purpose

说明

面向对象风格:

publicCairoRadialGradient::__construct(float $x0,float $y0,float $r0,float $x1,float $y1,float $r1)

过程化风格:

Creates a new radial gradient CairoPattern between the two circles defined by(x0, y0, r0)and(x1, y1, r1). Before using the gradient pattern, a number of color stops should be defined using CairoRadialGradient::addColorStopRgb() or CairoRadialGradient::addColorStopRgba().

Note: The coordinates here are in pattern space. For a new pattern, pattern space is identical to user space, but the relationship between the spaces can be changed with CairoRadialGradient::setMatrix().

参数

$x0

x coordinate for the center of the start circle.

$y0

y coordinate for the center of the start circle.

$r0

radius of the start circle.

$x1

x coordinate for the center of the end circle.

$y1

y coordinate for the center of the end circle.

$r1

radius of the end circle.

返回值

Description...

范例

Example #1 CairoRadialGradient::__construct() example

<?php
/* ... */
?>

以上例程的输出类似于：

...

参见

• Classname::Method()