Load external atlas sprite, create animations and frames at runtime

I'm trying to load a local atlas sprite and create animations and frames at runtime. I'm able to load images, and it seems it is also possible to add sprites and frames. But how can I cut the images to add them as frames for the sprite? The solutions I've found below refer to plugins using C2, but can't seem to find any info when using C3, while the rest are unresolved. Is this not possible?

construct.net/en/forum/construct-2/how-do-i-18/draw-part-sprite-image-140379

construct.net/en/forum/extending-construct-2/addons-29/plugin-canvas-41782

construct.net/en/forum/extending-construct-2/addons-29/plugin-paster-66240

construct.net/en/forum/construct-3/how-do-i-8/possibly-script-animations-176844

construct.net/en/forum/construct-3/how-do-i-8/load-sprites-animations-form-161213

I learn a example by R0J0hound in this post and re-made a example:

cdn.discordapp.com/attachments/225550155531812865/1285262088108769280/load_spriteStrip.c3p

This example will load a file containing sprite strip/sheet frames from the project's files.

Then it will be displayed as a single frame in the game

noted that: this example is not optimized. You can refer to what R0J0hound mentioned and use the drawing canvas to paste a single frame for better results.

XHXIAIEIN you mentioned that it isn't optimized. Did you bring that up because you noticed a significant slowdown, especially compared to pasting frames? I thought shifting uvs would be faster.

Yes, it still uses the full iamge size(216x288) in memory, not the size of a single frame(70x70). If you use more pictures in the future, it is not healthy

I think a possible optimization method is to pre-process the image after get the strip info. that is, before "LoadStrip()" in this example, cut each frame contained in the Strip, and save it into the animation frame of Sprite. Then use the sprite normally.