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Добавил функцию Image

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This commit is contained in:
Igor Timofeev 2015-10-27 14:42:56 +03:00
parent c61e2c8fd2
commit 9c8a805901
1 changed files with 29 additions and 4 deletions
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33
lib/doubleBuffering.lua
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@ -1,11 +1,12 @@
local component = require("component")
local colorlib = require("colorlib")
local unicode = require("unicode")
local image
local gpu = component.gpu
local buffer = {}
local countOfGPUOperations = 0
local debug = false
local debug = true
local sizeOfPixelData = 3
------------------------------------------------------------------------------------------------------
@ -264,9 +265,33 @@ function buffer.text(x, y, color, text)
local index
local sText = unicode.len(text)
for i = 1, sText do
index = convertCoordsToIndex(x + i - 1, y)
buffer.screen.new[index + 1] = color
buffer.screen.new[index + 2] = unicode.sub(text, i, i)
if (x + i - 1) >= 1 and y >= 1 and (x + i - 1) <= buffer.screen.width and y <= buffer.screen.height then
index = convertCoordsToIndex(x + i - 1, y)
buffer.screen.new[index + 1] = color
buffer.screen.new[index + 2] = unicode.sub(text, i, i)
end
end
end
function buffer.image(x, y, picture)
if not image then image = require("image") end
local index, imageIndex
for j = y, (y + picture.height - 1) do
for i = x, (x + picture.width - 1) do
if i >= 1 and j >= 1 and i <= buffer.screen.width and j <= buffer.screen.height then
index = convertCoordsToIndex(i, j)
--Копипаст формулы!
imageIndex = (picture.width * ((j - y + 1) - 1) + (i - x + 1)) * 4 - 4 + 1
if picture[imageIndex + 2] ~= 0x00 then
buffer.screen.new[index] = colorlib.alphaBlend(buffer.screen.new[index], picture[imageIndex], picture[imageIndex + 2])
else
buffer.screen.new[index] = picture[imageIndex]
end
buffer.screen.new[index + 1] = picture[imageIndex + 1]
buffer.screen.new[index + 2] = picture[imageIndex + 3]
end
end
end
end