U++ framework: Draw, Display, Images, Bitmaps, Icons » Remove the transparent area around the image (sprite optimization)

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Remove the transparent area around the image (sprite optimization) [message #51756]

Thu, 16 May 2019 10:51

Vitorio
Messages: 1
Registered: May 2019

Junior Member

Hello.

I looked at examples of working with images, but have not yet understood which approaches are most effective in terms of performance. Tell me, please, what controls and classes can I use to remove the transparent area around the sprite?

My sprites are stored in PNG files (32 bits, RGBA).
I need:
1. open sprite image from file.
2. calculate the rectangle bounding the opaque area of the sprite.
2. remove the transparent area around.
3. save the result to a PNG file.

index.php?t=getfile&id=5843&private=0

p.s. U++ is amazing! Smile

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Re: Remove the transparent area around the image (sprite optimization) [message #51807 is a reply to message #51756]

Fri, 07 June 2019 09:36

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

FindFile
StreamRaster::LoadFileAny
FindBounds
Crop
PNGEncoder

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