Display image from photos.pick_image?

[jerry]

I’m playing around with displaying a photo from the photo library in a very simple script; however, I’m doing something wrong: where the image should be, it displays white in the shape that the image ought to be:

from scene import *
import photos

class MyScene(Scene):	
	def __init__(self, mapimage):
		mapimage2 = mapimage.convert('RGBA')
		self.mapimage = load_pil_image(mapimage2)

	def draw(self):
		# This will be called for every frame
		background(1, 1, .5)
		fill(1, 0, 0)
		
		image(self.mapimage, 0, 0)

		# Draw a red circle for every finger that touches the screen:
		for touch in self.touches.values():
			ellipse(touch.location.x - 50, touch.location.y - 50, 100, 100)
	
mapimage = photos.pick_image(show_albums=True)
if mapimage:
	scene = MyScene(mapimage)
	run(scene, frame_interval=1)
else:
	print 'Canceled or invalid image.'

Touching the screen drags one or more red circles around, but the image doesn’t appear.

[mmontague]

This code didn't work at all for me until I added a call to Scene's init() function, e.g. using super():

def __init__(self, mapimage):
        mapimage2 = mapimage.convert('RGBA')
        self.mapimage = load_pil_image(mapimage2)
        super(MyScene,self).__init__() 

Now I see the image I picked in the lower left of the screen.

[jerry]

Are you sure you didn’t make any other changes to get it to work? I verified before adding the super() call that I was able to drag red dots across the screen; and after adding super() I still see only a white rectangle in the lower-left where the image ought to be. (Dragging red dots continues to work.)

[mmontague]

Yeah that is all I changed.
Could it be an issue with the image itself?
What if, just for debug, you do a mapimage.show() to put it on the console, right after you get it from photos.pick_image. To see what it looks like there.

[jerry]

Yes, mapimage.show() displays it in the console. I made this change to test it:

if mapimage:
    scene = MyScene(mapimage)
    run(scene, frame_interval=1)
    mapimage2 = mapimage.convert('RGBA')
    mapimage.show()
    mapimage2.show()
else:
    print 'Canceled or invalid image.'

I tried this on all of the images I'd been using for testing, and in each case, I saw the image twice in the console after hitting the "x" in the upper right of the scene. But it still displays just a white rectangle (surrounded by yellow) in the scene (which I can move red dots around on).

[mmontague]

I really don't know then.
Have you checked that the built-in images work, like
image('Sun_1', 0, 0)

[JonB]

This post is deleted!

[JonB]

turns out it is hard to search the forum for function names with underscores... but this was asked/answered once before:
https://forum.omz-software.com/topic/1590/scene-load_pil_image

bottom line, load_pil_image from setup, not init, and you should be good. montague is likely using the beta, which does not seem to have that limitation anymore.

[mmontague]

Yes, I have the beta.

[jerry]

Thank you! That was the issue. For future reference, here is the code that works:

from scene import *
import photos

class MyScene(Scene):
	def __init__(self, mapimage):
		self.mapimage = mapimage.convert('RGBA')
		super(MyScene, self).__init__()

	def setup(self):
		self.mapimage = load_pil_image(self.mapimage)

	def draw(self):
		background(1, 1, .5)
		image(self.mapimage, 0, 0)
	
		# Draw a red circle for every finger that touches the screen:
		fill(1, 0, 0)
		for touch in self.touches.values():
			ellipse(touch.location.x - 50, touch.location.y - 50, 100, 100)
	
mapimage = photos.pick_image(show_albums=True)
if mapimage:
	scene = MyScene(mapimage)
	run(scene, frame_interval=1)
else:
	print 'Canceled or invalid image.'