The best explanation is that the RGB color model is somewhat unintuitive for us humans. It’s perfectly logical for a video display device (such as a monitor or television) that only knows how to display colors by mixing varying amounts of 3 pre-defined colors: red, green, and blue. But that’s not how you and I … Read more
I don’t see much reason of creating separate batch for text drawing. Using gdxVersion = ‘1.4.1’ (built with gradle in Android Studio) that code draws text successfully: BitmapFont font = new BitmapFont(); //or use alex answer to use custom font public void render( float dt ) { batch.setProjectionMatrix(camera.combined); //or your matrix to draw GAME WORLD, … Read more
Is drawing lines/paths just something the GPU is bad at and that one should not try to hardware accelerate, or am I likely doing something wrong that causes the bad performance? Paths are always rendered using the CPU. When the app is hardware accelerated this means the renderer will first draw your path using the … Read more
As it turns out, Java2D (which I’m assuming is what you’re using) is already pretty good at this! There’s a decent tutorial here: http://www.javaworld.com/javaworld/jw-08-1998/jw-08-media.html The important line is: graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
You could try using the parametrized equations for an ellipse rotated at an arbitrary angle: x = h + a*cos(t)*cos(phi) – b*sin(t)*sin(phi) [1] y = k + b*sin(t)*cos(phi) + a*cos(t)*sin(phi) [2] …where ellipse has centre (h,k) semimajor axis a and semiminor axis b, and is rotated through angle phi. You can then differentiate and solve … Read more
No, clip space and NDC space are not the same thing. Clip space is actually one step away from NDC, all coordinates are divided by Clip.W to produce NDC. Anything outside of the range [-1,1] in resulting NDC space corresponds to a point that is outside of the clipping volume. There is a reason the … Read more
The answer was given, but to make things more clear to anyone reading this: 1) if you wish to perform ONE transformation in your bitmap, you CAN use SET (setRotate, setScale etc). But note that any call to a “set” method OVERRIDES other transformations. It’s like a new matrix. That’s why OP’s rotation was not … Read more
AFAIK, a View’s onDraw() is called when: The view is initially drawn Whenever invalidate() is called on the view Invalidate can be called by you or the system whenever needed. For example, a lot of Views change how they look onTouch, like an EditText getting an outline and cursor, or a button being in the … Read more