(PECL cairo >= 0.1.0)
CairoRadialGradient::__construct — The __construct purpose
面向对象风格:
$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().
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.
Description...
Example #1 CairoRadialGradient::__construct() example
<?php
/* ... */
?>
以上例程的输出类似于：
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