Idk if this is a good place to ask, but how would i cut out a shape like this http://i1094.photobucket.com/albums/i442/kiavoldemort/Coal-1.png from another image?
kiarocks wrote ...
2012/2/20
Cutting Images
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Two ways, I can immediately come up with:
(1) Either make all the interior (preferred), or all the exerior a specific color, and then for each pixel, if it is (or is not) that color, change the color of the current pixel inside to the color of the same pixel in the other image.
(2) refer to Clipping images
NVM! I could just figure out the coords need to make the Polygon, and use that.
If you know the name of the file already, use 'try'/'catch' and try to open it. If it opens, load it.
I figured that out, but once i open the (java.io)File how do I save it when I'm done?
I guess you need to check out the tutorial on file ops.
The easiest way is to have an initial integer for the number of points and then either (1) all the x-coordinates followed by all the y-coordinates, or (2) alternate x-coordinate and y-coordinate for each point in the polygon.
This way, when reading the file back, after the first integer is read back in, it can be used to determine how many more integer values need to be read back in for the polygon coodinates.
There is a Polygon class, which is a subset of the Shape class, that has all of your polygon functionality built in. Shapes are also compatible with Graphics2D, making it easy to draw polygons of your own.
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