How to export object position in frames and replace simple object with imported image

[zydjohn]

Hello:
Thank you very much, your code work like a charm.
One minor thing: I create an animation with 24 frames for one seconds.
How to extend to like 3 or 5 times longer, just copy and paste the first 24 frames from the time line is enough?
Again, thank you very very much!

[KnowZero]

Just expand the list variable, the more values on the list, the more frames it will create.

If your goal is to skip frames, then you need a multiplier when you do:
doc.setCurrentTime(i)

Edit: If you are still confused then here:

from krita import *

doc = Krita.instance().activeDocument()

skipFrames = 24
list = [ [0,0], [50,50] ]

img = QImage('c:/my_path_to/soccer.png')

img.convertToFormat(QImage.Format_RGBA8888)
ptr = img.constBits()
ptr.setsize(img.byteCount())

def stepper1(i):
    doc.setCurrentTime(i*skipFrames)
    Krita.instance().action('add_blank_frame').trigger()
    
    if len(list)-1 >= i+1:
        QtCore.QTimer.singleShot(1000, lambda: stepper1(i+1))
    else:
        stepper2(0)

def stepper2(i):
    doc.setCurrentTime(i*skipFrames)
    node = doc.activeNode()
    node.setPixelData( bytes(ptr.asarray()) ,list[i][0],list[i][1], img.width(), img.height() )
    doc.refreshProjection()
    
    if len(list)-1 >= i+1: QtCore.QTimer.singleShot(1000, lambda: stepper2(i+1))

newLayer = doc.createNode("Animated Item", "paintLayer")
doc.rootNode().addChildNode(newLayer,None)

QtCore.QTimer.singleShot(1000, lambda: stepper1(0))

[zydjohn]

Hello:
I found some minor issue with the following code with 24 positions in the list.
from krita import *
doc = Krita.instance().activeDocument()
list = [ [0,0], [30, 31], [60, 62], [90, 93], [120,124] , [150,155], [180,186], [210,217], [240,248], [270,279], [300,310], [330,341], [330,346], [360,315], [390,284], [420,253] , [450,222] , [480,191], [510,160], [540,129], [570,98], [600,67], [630,36], [660,0]]

view = Krita.instance().activeWindow().activeView()
img = QImage(‘D:/Videos/Animation/Soccer50px.png’)
img.convertToFormat(QImage.Format_RGBA8888)
ptr = img.constBits()
ptr.setsize(img.byteCount())

def stepper1(i):
doc.setCurrentTime(i)
Krita.instance().action(‘add_blank_frame’).trigger()
if len(list)-1 >= i+1:
QtCore.QTimer.singleShot(1000, lambda: stepper1(i+1))
else:
stepper2(0)

def stepper2(i):
doc.setCurrentTime(i)
node = doc.activeNode()
node.setPixelData( bytes(ptr.asarray()) ,list[i][0],list[i][1], img.width(), img.height() )
doc.refreshProjection()
if len(list)-1 >= i+1: QtCore.QTimer.singleShot(1000, lambda: stepper2(i+1))

newLayer = doc.createNode(“Animated Item”, “paintLayer”)
doc.rootNode().addChildNode(newLayer,None)

QtCore.QTimer.singleShot(1000, lambda: stepper1(0))

To play the animation, I can’t see any issue, so it basically works.
But if I look carefully, then I found there are a few frames, the soccer ball is gone, so they are empty frames.
Frame numbers are: #1, #3, #9, #13, #17, #19.
Except #9, the other missing frames are prime numbers, like: 3, 13, 17, 19.
I have tried to use one frame before the empty frame to duplicate the frame. But this option “Create Duplicate Frame” is gone.
Any advice?
Thanks,
I don’t know how to upload a picture to show the timeline.

[KnowZero]

Try Krita 5 beta. It is more reliable for animation as it had a lot of fixes.

Otherwise, you can select the layer with the soccer ball and rerun the script except change:

newLayer = doc.createNode(“Animated Item”, “paintLayer”)
doc.rootNode().addChildNode(newLayer,None)

QtCore.QTimer.singleShot(1000, lambda: stepper1(0))

to

QtCore.QTimer.singleShot(1000, lambda: stepper2(0))

This should backfill the missing ones