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ImageData (简体中文)
Raw (decoded) image data.
You can't draw ImageData directly to screen. See Image for that. 你不能直接绘制ImageData到屏幕上，参见Image
Constructors
| love.image.newImageData | Creates a new ImageData object. |
Functions
| Data:getPointer | Gets a pointer to the Data. |
| Data:getSize | Gets the size in bytes of the Data. |
| ImageData:encode | Encodes ImageData. |
| ImageData:getHeight | Gets the height of the ImageData. |
| ImageData:getPixel | Gets the pixel at the specified position. |
| ImageData:getString | Gets the full ImageData as a string. |
| ImageData:getWidth | Gets the width of the ImageData. |
| ImageData:mapPixel | Transform an image by applying a function to every pixel. |
| ImageData:paste | Paste into ImageData from another source ImageData. |
| ImageData:setPixel | Sets the color of a pixel. |
| Object:type | Gets the type of the object as a string. |
| Object:typeOf | Checks whether an object is of a certain type. |
Examples
Images that have dimensions that are not a 2^n will display incorrectly as a white rectangle on some graphics chipsets. This function pads images so they will display correctly.
尺寸不是2^n的图片往往无法正常显示而是变成了白块，这个函数可以解决这个问题
function newPaddedImage(filename)
local source = love.image.newImageData(filename)
local w, h = source:getWidth(), source:getHeight()
-- 寻找最相近的两个pow.
local wp = math.pow(2, math.ceil(math.log(w)/math.log(2)))
local hp = math.pow(2, math.ceil(math.log(h)/math.log(2)))
-- Only pad if needed:
if wp ~= w or hp ~= h then
local padded = love.image.newImageData(wp, hp)
padded:paste(source, 0, 0)
return love.graphics.newImage(padded)
end
return love.graphics.newImage(source)
end
local source = love.image.newImageData(filename)
local w, h = source:getWidth(), source:getHeight()
-- 寻找最相近的两个pow.
local wp = math.pow(2, math.ceil(math.log(w)/math.log(2)))
local hp = math.pow(2, math.ceil(math.log(h)/math.log(2)))
-- Only pad if needed:
if wp ~= w or hp ~= h then
local padded = love.image.newImageData(wp, hp)
padded:paste(source, 0, 0)
return love.graphics.newImage(padded)
end
return love.graphics.newImage(source)
end
Supertypes
See Also
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