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11 votes
1 answer
13k views

How does Matrix.postScale( sx, sy, px, py) work?

First read Taig's question Taig said: When calling Matrix.postScale( sx, sy, px, py ); the matrix gets scaled and also translated (depending on the given point x, y). That predestines this ...
Injury's user avatar
  • 143
1 vote
0 answers
829 views

2D rotation openGL es 2.0

I am trying to make a game and I need my startship(triangle) to be rotated around its own center. (It should looks like you just put a paper triangle on a table and rotating it) The coords of my ...
Faceles's user avatar
  • 453
0 votes
1 answer
163 views

Adding a rotated rectangle to a path without allocating memory

If I try to allocate any memory during onDraw in my View-derived class in my Android app, Eclipse/lint gives me warnings that I shouldn't be allocating memory during the execution of onDraw. so I'm ...
BlueMonkMN's user avatar
  • 25.5k
2 votes
1 answer
2k views

2D Quads : Translation with OpenGL ES 2.0 on Android

I have a simple 2D engine that renders 2D textured quads, and right now I can scale the quad or rotate it, but when I try to translate it I have a strange distortion (the quad is squashed in the half ...
user1546493's user avatar