CODEWITHSUNDEEP
iphonecolorsfill
xavoDev
xavoDev

Reputation: 51

Coloring Image in iPhone SDK

i am developing a iphone app. i have a background image lets say an airplane with black color out lines and from color palette user can pick a color and fill the region of airplane....any help, code , suggestion will highly be appriciated

Upvotes: 1

Views: 1654

Answers (2)

Ryan Detzel
Ryan Detzel

Reputation: 5599

My first though was to have a UIView and a mask image on top of that with the plane but this only works in certain situations. If the shape of the plane does not change you could also change the color and then "fill" the plan in during the drawRect using functions like CGContextAddArc and CGContextAddRect.

Upvotes: 0

Nuno Furtado
Nuno Furtado

Reputation: 4568

A simple fill algorithm should do. just expand from the point you are on until you meet region end pixels see http://en.wikipedia.org/wiki/Flood_fill you can also try googling for Boundary Fill algorithm

Upvotes: 3

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