Snapshots created with half the size passed to newSnapshot

Solar2D Advanced Graphics
#1

Hello,

I’m trying to create a full-screen snapshot like this:

local snapshot = display.newSnapshot(display.contentWidth, display.contentHeight) snapshot.anchorX = 0 snapshot.anchorY = 0 snapshot.x = 0 snapshot.y = 0

But the content of the snapshot is only visible in the top-left quadrant of the screen. I have to do this to make it actually full-screen:

local snapshot = display.newSnapshot(display.contentWidth \* 2, display.contentHeight \* 2)

Why is that?

Note: I’m also running Graphics 1.0 compatibility mode.

Thanks,

George

EDIT: I’m on build 2014.2162.

#2

I’ve migrated my project to Graphics 2.0, and the positioning behavior of snapshots is still very strange. Has anybody else had any problems with snapshots in this regard?

#3

I should mention that I’m doing this in my main.lua:

display.setDefault("anchorX", 0) display.setDefault("anchorY", 0)  

Because my project depends on this. If I don’t set these, it seems to be working correctly. But I’m setting the anchor on the snapshot though. Why should this affect the snapshot at all?

#4

I’ve removed the setDefault calls and I’m now creating by snapshot this way:

function ui.newFullSnapshot()     local snapshot = display.newSnapshot(display.contentWidth, display.contentHeight)     snapshot.anchorX, snapshot.anchorY = 0, 0     snapshot.x, snapshot.y = 0, 0          --I tried this too, nothing --snapshot.group.anchorChildren = true     --snapshot.group.anchorX, snapshot.group.anchorY = 0, 0     --snapshot.group.x, snapshot.group.y = 0, 0        return snapshot end

Can someone please tell me *why* this snapshot is drawn in the bottom-right quadrant of the screen, instead of the whole screen? This is driving me nuts!

I’ve attached a sample app that shows this behavior. Can someone please look at it?

#5

OK, if I modify the attached code to this:

local snapshot = display.newSnapshot(display.contentWidth, display.contentHeight) snapshot.anchorX, snapshot.anchorY = 0, 0 snapshot.x, snapshot.y = 0, 0 local background = display.newImageRect("background.jpg", display.contentWidth, display.contentHeight) background.anchorX, background.anchorY = 0,0 background.x, background.y = -display.contentWidth/2, -display.contentHeight/2 snapshot.group:insert(background)

I get the result that I want. So, does this mean that a snapshot’s origin is always its center, regardless of the anchorX / anchorY properties?

#6

I’ve migrated my project to Graphics 2.0, and the positioning behavior of snapshots is still very strange. Has anybody else had any problems with snapshots in this regard?

#7

I should mention that I’m doing this in my main.lua:

display.setDefault("anchorX", 0) display.setDefault("anchorY", 0)  

Because my project depends on this. If I don’t set these, it seems to be working correctly. But I’m setting the anchor on the snapshot though. Why should this affect the snapshot at all?

#8

I’ve removed the setDefault calls and I’m now creating by snapshot this way:

function ui.newFullSnapshot()     local snapshot = display.newSnapshot(display.contentWidth, display.contentHeight)     snapshot.anchorX, snapshot.anchorY = 0, 0     snapshot.x, snapshot.y = 0, 0          --I tried this too, nothing --snapshot.group.anchorChildren = true     --snapshot.group.anchorX, snapshot.group.anchorY = 0, 0     --snapshot.group.x, snapshot.group.y = 0, 0        return snapshot end

Can someone please tell me *why* this snapshot is drawn in the bottom-right quadrant of the screen, instead of the whole screen? This is driving me nuts!

I’ve attached a sample app that shows this behavior. Can someone please look at it?

#9

OK, if I modify the attached code to this:

local snapshot = display.newSnapshot(display.contentWidth, display.contentHeight) snapshot.anchorX, snapshot.anchorY = 0, 0 snapshot.x, snapshot.y = 0, 0 local background = display.newImageRect("background.jpg", display.contentWidth, display.contentHeight) background.anchorX, background.anchorY = 0,0 background.x, background.y = -display.contentWidth/2, -display.contentHeight/2 snapshot.group:insert(background)

I get the result that I want. So, does this mean that a snapshot’s origin is always its center, regardless of the anchorX / anchorY properties?

#10

Yep, you’re right.

And coupled with this bug, http://forums.coronalabs.com/topic/50862-groups-within-groups-within-snapshots/ means that full screen snapshots where groups are involved are not a fun time.

#11

Yep, you’re right.

And coupled with this bug, http://forums.coronalabs.com/topic/50862-groups-within-groups-within-snapshots/ means that full screen snapshots where groups are involved are not a fun time.