June 2015
Intermediate to advanced
388 pages
7h 31m
English
Content preview from Android Game Programming By ExampleBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Drawing the scene
As we will see, drawing a bitmap is really trivial. But the coordinate system that we use to draw our graphics onto needs a brief explanation.
Plotting and drawing
When we draw a Bitmap object to the screen, we pass in the coordinates we want to draw the object at. The available coordinates of a given Android device depend on the resolution of its screen.
For example, the Samsung Galaxy S4 phone has a screen resolution of 1920 pixels (across) by 1080 pixels (down) when held in a landscape view.
The numbering system of these coordinates starts in the top-left hand corner at 0,0 and proceeds down and to the right until the bottom right corner is pixel 1919, 1079. The apparent 1 pixel disparity between 1920/ 1919 and 1080/ 1079 is because ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.