CairoMatrix::__construct

cairo_matrix_init

(PECL cairo >= 0.1.0)

CairoMatrix::__construct -- cairo_matrix_init — Creates a new CairoMatrix object

说明

面向对象风格 (method):

public CairoMatrix::__construct ([ float $xx = 1.0 [, float $yx = 0.0 [, float $xy = 0.0 [, float $yy = 1.0 [, float $x0 = 0.0 [, float $y0 = 0.0 ]]]]]] )

过程化风格:

cairo_matrix_init ([ float $xx = 1.0 [, float $yx = 0.0 [, float $xy = 0.0 [, float $yy = 1.0 [, float $x0 = 0.0 [, float $y0 = 0.0 ]]]]]] ) : object

Returns new CairoMatrix object. Matrices are used throughout cairo to convert between different coordinate spaces. Sets matrix to be the affine transformation given by xx, yx, xy, yy, x0, y0. The transformation is given by: x_new = xx * x + xy * y + x0; and y_new = yx * x + yy * y + y0;

参数

xx: xx component of the affine transformation
yx: yx component of the affine transformation
xy: xy component of the affine transformation
yy: yy component of the affine transformation
x0: X translation component of the affine transformation
y0: Y translation component of the affine transformation

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 = new CairoMatrix(1.0, 0.5, 0.0, 1.0, 0.0, 0.0);
?>

Example #2 过程化风格


<?php
/* Create a new Matrix */
$matrix = cairo_matrix_init(1.0, 0.5, 0.0, 1.0, 0.0, 0.0);
?>

参见

CairoMatrix::initIdentity() - Creates a new identity matrix
CairoMatrix::initRotate() - Creates a new rotated matrix
CairoMatrix::initScale() - Creates a new scaling matrix
CairoMatrix::initTranslate() - Creates a new translation matrix

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官方地址：https://www.php.net/manual/en/cairomatrix.construct.php

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CairoMatrix::__construct

cairo_matrix_init

说明

参数

返回值

范例

参见

User Contributed Notes