Difference between revisions of "TextureRegion"

From GiderosMobile
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within a texture atlas which is a large image, which contains many smaller sub-images.<br />
 
within a texture atlas which is a large image, which contains many smaller sub-images.<br />
 
<br />
 
<br />
 +
=== Examples ===
 +
'''Example'''<br/>
 +
<source lang="lua">local texture = Texture.new(&quot;atlas.png&quot;)<br />
 +
<br />
 +
-- define 4 equal regions of size 100x100 from &quot;atlas.png&quot;<br />
 +
local region1 = TextureRegion.new(texture, 0,  0,  100, 100)<br />
 +
local region2 = TextureRegion.new(texture, 100, 0,  100, 100)<br />
 +
local region3 = TextureRegion.new(texture, 100, 100, 100, 100)<br />
 +
local region4 = TextureRegion.new(texture, 0,  100, 100, 100)<br />
 +
<br />
 +
-- add these regions to scene tree<br />
 +
local bitmap1 = Bitmap.new(region1)<br />
 +
local bitmap2 = Bitmap.new(region2)<br />
 +
local bitmap3 = Bitmap.new(region3)<br />
 +
local bitmap4 = Bitmap.new(region4)<br />
 +
<br />
 +
stage:addChild(bitmap1)<br />
 +
stage:addChild(bitmap2)<br />
 +
stage:addChild(bitmap3)<br />
 +
stage:addChild(bitmap4)</source>
 
{|-
 
{|-
 
| style="width: 50%;"|
 
| style="width: 50%;"|

Revision as of 10:39, 23 August 2018

Supported platforms: android, ios, mac, pc
Available since: Gideros 2011.6

Description


The `TextureRegion` class specifies a texture and a rectangular region in it. It is used to define independent texture regions
within a texture atlas which is a large image, which contains many smaller sub-images.

Examples

Example

local texture = Texture.new(&quot;atlas.png&quot;)<br />
<br />
-- define 4 equal regions of size 100x100 from &quot;atlas.png&quot;<br />
local region1 = TextureRegion.new(texture, 0,   0,   100, 100)<br />
local region2 = TextureRegion.new(texture, 100, 0,   100, 100)<br />
local region3 = TextureRegion.new(texture, 100, 100, 100, 100)<br />
local region4 = TextureRegion.new(texture, 0,   100, 100, 100)<br />
<br />
-- add these regions to scene tree<br />
local bitmap1 = Bitmap.new(region1)<br />
local bitmap2 = Bitmap.new(region2)<br />
local bitmap3 = Bitmap.new(region3)<br />
local bitmap4 = Bitmap.new(region4)<br />
<br />
stage:addChild(bitmap1)<br />
stage:addChild(bitmap2)<br />
stage:addChild(bitmap3)<br />
stage:addChild(bitmap4)

Methods

TextureRegion.new - creates a new TextureRegion object
TextureRegion.new -
TextureRegion:getRegion - returns the coordinates of the region
TextureRegion:getScale - returns the scale ratio of the underlying atlas
TextureRegion:setRegion - sets the coordinates of the region

Events

Constants