layer_background_xscale

描述

This function can be used to set the scale along the x-axis of a background element. You give the background element ID (which you get when you create a background element using layer_background_create() or when you use the function layer_background_get_id()), and then set the animation speed. The scale value you give is a multiplier that will be used to change the way the background element is displayed, where a value of 0.5 would display the element at half scale, and a value of 2 would display at double scale. Note that negative values are valid, and will "flip" the element around the (0,0) position, so an x scale of -1 would show the image reversed.

语法：

layer_background_xscale(background_element_id, xscale);

参数：

参数	描述
background_element_id	The unique ID value of the background element to change
x轴缩放	The scale value to use (1 is no scaling)

返回：

N/A（无返回值）

例如：

var lay_id = layer_get_id("Background_water");
var back_id = layer_background_get_id(lay_id);
layer_background_xscale(back_id, -1);

The above code will get the layer ID for the layer named "Background_water" and then use that to get the ID of the background element on that layer. This ID is then used to change the element xscale.

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