CairoMatrix::scale()

(PECL cairo >= 0.1.0)

Applies scaling to a matrix

说明

面向对象风格(method):

publicCairoMatrix::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

CairoMatrix::initScale() Creates a new scaling matrix