CairoRadialGradient::__construct

(PECL cairo >= 0.1.0)

CairoRadialGradient::__construct — The __construct purpose

说明

Object oriented style:

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

Procedural style:

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()