其他导出接口 接上篇:
//www.greatytc.com/p/862cb1764734
local MainScene = class("MainScene", cc.load("mvc").ViewBase)
--MainScene.RESOURCE_FILENAME = "MainScene.csb"
function MainScene:onCreate()
printf("resource node = %s", tostring(self:getResourceNode()))
--绘制图片
self.sprite = cc.Sprite:create("red3.png")
self.sprite:setPosition(50, 50)
self:addChild(self.sprite, 1)
local size = self.sprite:getContentSize() -- 返回size
--创建渲染
local renderTexture1 = cc.RenderTexture:create(size.width, size.height, cc.TEXTURE2_D_PIXEL_FORMAT_RGB_A8888)
renderTexture1:begin()
--这里可能是复制顶点数据等
local pTempSpr = cc.Sprite:createWithSpriteFrame(self.sprite:getSpriteFrame())
pTempSpr:setPosition(cc.p(size.width/2, size.height/2))
pTempSpr:visit()
renderTexture1:endToLua()--这个之后必须隔帧取(或者加个定时器 当前帧取到的数据全是0)
renderTexture1:retain()--必须加这个 保存对象 否则下帧就被回收了 不需要了记得release
local scheduler = cc.Director:getInstance():getScheduler()
local function scheduleCallBack()
--do something
--...
local pImage = renderTexture1:newImage()
for j = 0, 2 do
for i = 0, 2 do
print(i, j)
local ovt = pImage:getOneData(i, j, size)
dump(ovt, "ovt = ")
end
end
renderTexture1:release()--结束删除对象
if nil ~= schedulEntry then
scheduler:unscheduleScriptEntry(schedulEntry)
end
end
if nil ~= schedulEntry then
scheduler:unscheduleScriptEntry(schedulEntry)
end
schedulEntry = scheduler:scheduleScriptFunc(scheduleCallBack, 1, false)
end
return MainScene
输出
[LUA-print] resource node = nil
libpng warning: iCCP: known incorrect sRGB profile
[LUA-print] dump from: [string ".\packages/mvc/AppBase.lua"]:23: in function 'ct
or'
[LUA-print] - "AppBase configs" = {
[LUA-print] - "defaultSceneName" = "MainScene"
[LUA-print] - "modelsRoot" = {
[LUA-print] - 1 = "app.models"
[LUA-print] - }
[LUA-print] - "viewsRoot" = {
[LUA-print] - 1 = "app.views"
[LUA-print] - }
[LUA-print] - }
[LUA-print] 111111111111111111111
[LUA-print] resource node = nil
[LUA-print] 0 0
[LUA-print] dump from: [string ".\app/views/MainScene.lua"]:33: in function <[st
ring ".\app/views/MainScene.lua"]:25>
[LUA-print] - "ovt = " = {
[LUA-print] - "a" = 255
[LUA-print] - "b" = 0
[LUA-print] - "g" = 255
[LUA-print] - "r" = 92
[LUA-print] - }
[LUA-print] 1 0
[LUA-print] dump from: [string ".\app/views/MainScene.lua"]:33: in function <[st
ring ".\app/views/MainScene.lua"]:25>
[LUA-print] - "ovt = " = {
[LUA-print] - "a" = 254
[LUA-print] - "b" = 0
[LUA-print] - "g" = 254
[LUA-print] - "r" = 92
[LUA-print] - }
[LUA-print] 2 0
[LUA-print] dump from: [string ".\app/views/MainScene.lua"]:33: in function <[st
ring ".\app/views/MainScene.lua"]:25>
[LUA-print] - "ovt = " = {
[LUA-print] - "a" = 255
[LUA-print] - "b" = 0
[LUA-print] - "g" = 255
[LUA-print] - "r" = 92
[LUA-print] - }
[LUA-print] 0 1
[LUA-print] dump from: [string ".\app/views/MainScene.lua"]:33: in function <[st
ring ".\app/views/MainScene.lua"]:25>
[LUA-print] - "ovt = " = {
[LUA-print] - "a" = 254
[LUA-print] - "b" = 0
[LUA-print] - "g" = 254
[LUA-print] - "r" = 92
[LUA-print] - }
[LUA-print] 1 1
[LUA-print] dump from: [string ".\app/views/MainScene.lua"]:33: in function <[st
ring ".\app/views/MainScene.lua"]:25>
[LUA-print] - "ovt = " = {
[LUA-print] - "a" = 0
[LUA-print] - "b" = 0
[LUA-print] - "g" = 0
[LUA-print] - "r" = 0
[LUA-print] - }
[LUA-print] 2 1
[LUA-print] dump from: [string ".\app/views/MainScene.lua"]:33: in function <[st
ring ".\app/views/MainScene.lua"]:25>
[LUA-print] - "ovt = " = {
[LUA-print] - "a" = 254
[LUA-print] - "b" = 0
[LUA-print] - "g" = 254
[LUA-print] - "r" = 92
[LUA-print] - }
[LUA-print] 0 2
[LUA-print] dump from: [string ".\app/views/MainScene.lua"]:33: in function <[st
ring ".\app/views/MainScene.lua"]:25>
[LUA-print] - "ovt = " = {
[LUA-print] - "a" = 255
[LUA-print] - "b" = 0
[LUA-print] - "g" = 255
[LUA-print] - "r" = 92
[LUA-print] - }
[LUA-print] 1 2
[LUA-print] dump from: [string ".\app/views/MainScene.lua"]:33: in function <[st
ring ".\app/views/MainScene.lua"]:25>
[LUA-print] - "ovt = " = {
[LUA-print] - "a" = 254
[LUA-print] - "b" = 0
[LUA-print] - "g" = 254
[LUA-print] - "r" = 92
[LUA-print] - }
[LUA-print] 2 2
[LUA-print] dump from: [string ".\app/views/MainScene.lua"]:33: in function <[st
ring ".\app/views/MainScene.lua"]:25>
[LUA-print] - "ovt = " = {
[LUA-print] - "a" = 255
[LUA-print] - "b" = 0
[LUA-print] - "g" = 255
[LUA-print] - "r" = 92
[LUA-print] - }
至于为什么有些是255 有些是254 还不知道为什么
可能复制顶点中有什么对像素造成了偏差 可能是某个OPENGL参数需要设置
图片继续使用上篇文章末尾给出的原图即可
就是一张9像素 3*3的绿色图片 中间1像素镂空