CairoMatrix::scale

cairo_matrix_scale

(PECL cairo >= 0.1.0)

CairoMatrix::scale -- cairo_matrix_scale — Applies scaling to a matrix

说明

面向对象风格 (method):

public CairoMatrix::scale ( float $sx , float $sy ) : void

过程化风格:

cairo_matrix_scale ( CairoContext $context , float $sx , float $sy ) : void

Applies scaling by sx, sy to the transformation in the matrix. The effect of the new transformation is to first scale the coordinates by sx and sy, then apply the original transformation to the coordinates.

参数

matrix

Procedural only - CairoMatrix instance

sx

scale factor in the X direction

sy

scale factor in the Y direction

范例

Example #1 面向对象风格

<?php
/* Apply scaling to a matrix */
$matrix = new CairoMatrix(1.0, 0.5, 0.0, 1.0, 0.0, 0.0);
$matrix->scale(0.2, 2.0);
?>

Example #2 过程化风格

<?php
/* Apply scaling to a matrix */
$matrix = cairo_matrix_init(1.0, 0.5, 0.0, 1.0, 0.0, 0.0);
cairo_matrix_scale($matrix, 0.2, 2.0);
?>

参见