CairoMatrix::initRotate
cairo_matrix_init_rotate
(PECL cairo >= 0.1.0)
CairoMatrix::initRotate -- cairo_matrix_init_rotate — Creates a new rotated matrix
說明
物件導向風格 (method):
public static void CairoMatrix::initRotate
( float
$radians
)程序化風格:
object cairo_matrix_init_rotate
( float
$radians
)Creats a new matrix to a transformation that rotates by radians provided
參數
-
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.
回傳值
Returns a new CairoMatrix object that can be used with surfaces, contexts, and patterns.
範例
Example #1 物件導向風格
<?php
/* Create a new Matrix */
$matrix = CairoMatrix::initRotate(0.3);
?>
Example #2 程序化風格
<?php
/* Create a new Matrix */
$matrix = cairo_matrix_init_rotate(0.3);
?>
參見
- CairoMatrix::__construct() - Creates a new CairoMatrix object
- CairoMatrix::initIdentity() - Creates a new identity matrix
- CairoMatrix::initScale() - Creates a new scaling matrix
- CairoMatrix::initTranslate() - Creates a new translation matrix
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