DxConvertPixels: Difference between revisions

Latest revision as of 15:42, 7 November 2024

This function converts pixels from one format to another.

Syntax

string dxConvertPixels ( string pixels, string newFormat [, int quality = 80 ] )

Required Arguments

pixels : The pixels to convert the format of
newFormat : The new format required ('plain' or 'png' or 'jpeg')

Optional Arguments

quality : The quality of the returned pixels if the new format is 'jpeg'

Returns

Returns a copy of the pixels in the new format, or false if invalid arguments were passed to the function.

Example

The code opens an image, read its pixels, convert the pixels to PNG, and then save it. (You can use this image to test.)

addEventHandler('onClientResourceStart', resourceRoot, function()
  local img = fileOpen('img.jpg')
  local pixels = fileRead(img, fileGetSize(img))
  local pngPixels = dxConvertPixels(pixels, 'png')
  local newImg = fileCreate('img.png')
  fileWrite(newImg, pngPixels)
  fileClose(newImg)
  fileClose(img)
end)

@@ Line 5: / Line 5: @@
 ==Syntax==
 <syntaxhighlight lang="lua">
-string newPixels = dxConvertPixels( string pixels, string newFormat [, int quality ] )
+string dxConvertPixels ( string pixels, string newFormat [, int quality = 80 ] )
 </syntaxhighlight>
@@ Line 19: / Line 19: @@
 ==Example==
+The code opens an image, read its pixels, convert the pixels to PNG, and then save it. (You can use [http://i1325.photobucket.com/albums/u630/Tourmalinelisa2/128x128.jpg this] image to test.)
 <syntaxhighlight lang="lua">
-TODO
+addEventHandler('onClientResourceStart', resourceRoot, function()
+  local img = fileOpen('img.jpg')
+  local pixels = fileRead(img, fileGetSize(img))
+  local pngPixels = dxConvertPixels(pixels, 'png')
+  local newImg = fileCreate('img.png')
+  fileWrite(newImg, pngPixels)
+  fileClose(newImg)
+  fileClose(img)
+end)
 </syntaxhighlight>
-==Requirements==
-{{Requirements|n/a|1.3|}}
 ==See Also==
 {{Drawing_functions}}
+[[hu:dxConvertPixels]]