Blends and Composite Fills in Graphics 2.0

Hendrix000007 · November 24, 2013, 10:07am

Im trying to test out first taking a picture and save it to system.TemporaryDirectory == this works fine
and the try to use it in a comp blend == not ok, I get this error code:
“Attempt to concatenate upvalue ‘baseDir’ (a userdata value)”

Heres the chunk that goes wrong:
[lua]
local baseDir = system.TemporaryDirectory
[/lua]
–The image in temp dir = “image01.jpg”

–Further down in the code:
[lua]
compositePaint =
{
     type=“composite”,
     paint1 = { type=“image”, filename = baseDir … “image01.jpg” },
     paint2 = { type=“image”, filename = “texture3.jpg” }
}

[/lua]
When trying this code;

click first on the button start screen (it fires up the camera and saves it to the baseDir)
click the button over to start the blending show
Download the attached file and try it out:
PS!
You have to use Version 2013.2026 (2013.07.15) for this to work

Download the test here and try it out

ingemar · November 24, 2013, 12:42pm

I think you have to use system.pathForFile() to get access to the image first.

Like in:
local savedImage = system.pathForFile(“image01.jpg”, basedir)

rob · November 24, 2013, 4:49pm

system.TemporaryDirectory is not a string that can be appended to a file. You should be able to do:

compositePaint = { type=“composite”, paint1 = { type=“image”, filename = “image01.jpg”, baseDir=system.TemporaryDirectory }, paint2 = { type=“image”, filename = “texture3.jpg” } }

See:

http://docs.coronalabs.com/api/type/BitmapPaint/index.html

Rob

Hendrix000007 · November 25, 2013, 10:02pm

Hi Rob

This does not work:

Heres the code I used from examplefile, I just copied the files to the sandboxed temp folder and reloaded

[lua]

– list of effects

local composite_effect = {
“composite.add”,
“composite.average”,
“composite.colorBurn”,
“composite.colorDodge”,
“composite.darken”,
“composite.exclusion”,
“composite.glow”,
“composite.hardLight”,
“composite.hardMix”,
“composite.lighten”,
“composite.linearLight”,
“composite.multiply”,
“composite.negation”,
“composite.normalMapWith1DirLight”,
“composite.normalMapWith1PointLight”,
“composite.overlay”,
“composite.phoenix”,
“composite.pinLight”,
“composite.reflect”,
“composite.screen”,
“composite.softLight”,
“composite.subtract”,
“composite.vividLight”,
}

– setup the UI

local effectText = display.newText("", display.contentCenterX/2, 180, “Helvetica”, 32)
local effectText1 = display.newText(“Normal”, display.contentCenterX / 2 + display.contentCenterX, 180, “Helvetica”, 32)
local tapToStart = display.newText(“Tap anywhere to start”, display.contentCenterX, 60, “Helvetica”, 48)

– Declare the paint

local compositePaint =
{
    type=“composite”,
    paint1={ type=“image”, filename=“image01.jpg”, baseDir=system.TemporaryDirectory },
    paint2={ type=“image”, filename=“images/texture3.jpg” }
}

– setup the comparison image

local base = display.newImageRect( “images/image01.jpg”, 600, 400 )
base.x = display.contentCenterX / 2 + display.contentCenterX
base.y = display.contentCenterY

– setup the image to modify

local object = display.newRect(0, 0, 600, 400)
object.x = display.contentCenterX / 2
object.y = display.contentCenterY

– start up the timer to loop through the effects
local startItUp
startItUp = function(event)
if event.phase == “ended” then
tapToStart.isVisible = false
Runtime:removeEventListener(“touch”, startItUp)
local index = 1
timer.performWithDelay(2000, function()
    effectText.text = composite_effect[index]
    object.fill = compositePaint
    object.fill.effect = composite_effect[index]
    index = index + 1
   end, #composite_effect)
end
return true
end

Runtime:addEventListener(“touch”, startItUp)

[/lua]

The images are well known, I think you or Walter made the example ;D)

try it out and see for your self, I use: Version 2013.2036 (2013.07.15)

Hendrix000007 · November 25, 2013, 10:03pm

Got this error:

File: /Users/henrikruud/Desktop/CompositePaint/main.lua
Line: 56 (here)

Attempt to index field ‘fill’ (a string value)

walter · November 26, 2013, 12:01am

Can you try the latest daily build? There was a bug where the baseDir was not honored in the fill param — fixed starting in 2013.2086

Hendrix000007 · November 26, 2013, 7:16pm

And there the bug was

Thanks for fixing and letting me know

Everything is working now

A big thank to you and Rob!

For the others that read this string:

The problem was fixed in build

2013.2086

So, problem solved.

ingemar · November 24, 2013, 12:42pm

I think you have to use system.pathForFile() to get access to the image first.

Like in:
local savedImage = system.pathForFile(“image01.jpg”, basedir)

rob · November 24, 2013, 4:49pm

system.TemporaryDirectory is not a string that can be appended to a file. You should be able to do:

compositePaint = { type=“composite”, paint1 = { type=“image”, filename = “image01.jpg”, baseDir=system.TemporaryDirectory }, paint2 = { type=“image”, filename = “texture3.jpg” } }

See:

http://docs.coronalabs.com/api/type/BitmapPaint/index.html

Rob

Hendrix000007 · November 25, 2013, 10:02pm

Hi Rob

This does not work:

Heres the code I used from examplefile, I just copied the files to the sandboxed temp folder and reloaded

[lua]

– list of effects

local composite_effect = {
“composite.add”,
“composite.average”,
“composite.colorBurn”,
“composite.colorDodge”,
“composite.darken”,
“composite.exclusion”,
“composite.glow”,
“composite.hardLight”,
“composite.hardMix”,
“composite.lighten”,
“composite.linearLight”,
“composite.multiply”,
“composite.negation”,
“composite.normalMapWith1DirLight”,
“composite.normalMapWith1PointLight”,
“composite.overlay”,
“composite.phoenix”,
“composite.pinLight”,
“composite.reflect”,
“composite.screen”,
“composite.softLight”,
“composite.subtract”,
“composite.vividLight”,
}

– setup the UI

local effectText = display.newText("", display.contentCenterX/2, 180, “Helvetica”, 32)
local effectText1 = display.newText(“Normal”, display.contentCenterX / 2 + display.contentCenterX, 180, “Helvetica”, 32)
local tapToStart = display.newText(“Tap anywhere to start”, display.contentCenterX, 60, “Helvetica”, 48)

– Declare the paint

local compositePaint =
{
    type=“composite”,
    paint1={ type=“image”, filename=“image01.jpg”, baseDir=system.TemporaryDirectory },
    paint2={ type=“image”, filename=“images/texture3.jpg” }
}

– setup the comparison image

local base = display.newImageRect( “images/image01.jpg”, 600, 400 )
base.x = display.contentCenterX / 2 + display.contentCenterX
base.y = display.contentCenterY

– setup the image to modify

local object = display.newRect(0, 0, 600, 400)
object.x = display.contentCenterX / 2
object.y = display.contentCenterY

– start up the timer to loop through the effects
local startItUp
startItUp = function(event)
if event.phase == “ended” then
tapToStart.isVisible = false
Runtime:removeEventListener(“touch”, startItUp)
local index = 1
timer.performWithDelay(2000, function()
    effectText.text = composite_effect[index]
    object.fill = compositePaint
    object.fill.effect = composite_effect[index]
    index = index + 1
   end, #composite_effect)
end
return true
end

Runtime:addEventListener(“touch”, startItUp)

[/lua]

The images are well known, I think you or Walter made the example ;D)

try it out and see for your self, I use: Version 2013.2036 (2013.07.15)

Hendrix000007 · November 25, 2013, 10:03pm

Got this error:

File: /Users/henrikruud/Desktop/CompositePaint/main.lua
Line: 56 (here)

Attempt to index field ‘fill’ (a string value)

walter · November 26, 2013, 12:01am

Can you try the latest daily build? There was a bug where the baseDir was not honored in the fill param — fixed starting in 2013.2086

Hendrix000007 · November 26, 2013, 7:16pm

And there the bug was

Thanks for fixing and letting me know

Everything is working now

A big thank to you and Rob!

For the others that read this string:

The problem was fixed in build

2013.2086

So, problem solved.