International PHP Conference 2019 - Spring Edition

CairoMatrix::initRotate

cairo_matrix_init_rotate

(PECL cairo >= 0.1.0)

CairoMatrix::initRotate -- cairo_matrix_init_rotateCreates a new rotated matrix

说明

面向对象风格 (method):

public static void CairoMatrix::initRotate ( float $radians )

过程化风格:

object cairo_matrix_init_rotate ( float $radians )

Creats a new matrix to a transformation that rotates by radians provided

参数

radians

angle of rotation, in radians. The direction of rotation is defined such that positive angles rotate in the direction from the positive X axis toward the positive Y axis. With the default axis orientation of cairo, positive angles rotate in a clockwise direction.

返回值

Returns a new CairoMatrix object that can be used with surfaces, contexts, and patterns.

范例

Example #1 面向对象风格

<?php
/* Create a new Matrix */
$matrix CairoMatrix::initRotate(0.3);
?>

Example #2 过程化风格

<?php
/* Create a new Matrix */
$matrix cairo_matrix_init_rotate(0.3);
?>

参见

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