PHP Manual
CairoContext
Transform a coordinate

CairoContext::deviceToUser

cairo_device_to_user

(PECL cairo >= 0.1.0)

CairoContext::deviceToUser -- cairo_device_to_user — Transform a coordinate

说明

面向对象风格 (method):

public CairoContext::deviceToUser ( float $x , float $y ) : array

过程化风格:

cairo_device_to_user ( CairoContext $context , float $x , float $y ) : array

Transform a coordinate from device space to user space by multiplying the given point by the inverse of the current transformation matrix (CTM).

参数

context: A valid CairoContext object created with CairoContext::__construct() or cairo_create()
x: x value of the coordinate
y: y value of the coordinate

返回值

An array containing the x and y coordinates in the user-space

参见

CairoContext::deviceToUserDistance() - Transform a distance

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