koobas.hobune.stream
Saving UI Image to file with transparent background
Hello, I need help in understand what i need to do to save an image properly.
Right now i've manged to save my UI image, and then load it from file and into a sprite. but the problem is, the image that i take, also contains the background of the element i wanted to save.
So what should i do in order to only show my character in the saved picture, without anything else?
Right now this is how i save:
var tex = new Texture2D((int)width, (int)height, TextureFormat.RGB24, false);
tex.ReadPixels(new Rect(corners[0].x, corners[0].y, width, height), 0, 0);
If you use a camera to take the picture than set the camera's "clear flags" to don't clear.
The element I'm trying to take a picture of is a UI Image, and it's not in a camera (i think)
Do i have to change this Image to a sprite in the camera view? or is there another way?
As it's an ui element it has to be in the camera. (It doesn't have to be a child object or anything, based on the setting of it's canvas it can be anywhere). If it's an UI Image then your picture is aready a sprite, otherwise it's an UI RawImage.
Yes, i've realized this today.. $$anonymous$$y question was rather dumb :/
thanks for the help though!
Pretty sure your Texture format its wrong. Assuming where ever you're reading the pixels from has an alpha channel you need to use
Texture2D tex = new Texture2D((int)width, (int)height, TextureFormat.ARGB32, false);
Also ensure you save via
tex.EncodeToPNG();
As jpegs can't have alpha channels
Not sure if its the same thing but in Photoshop you can save out an image with transparent areas as PNG and import that into Unity as a UI Sprite.
