## GraphViz – How to connect subgraphs?

In the DOT language for GraphViz, I’m trying to represent a dependency diagram. I need to be able to have nodes inside a … Read more

## Difference between SurfaceView and View?

When is it necessary, or better to use a SurfaceView instead of a View? 7 Answers 7

## How can I produce an effect similar to the iOS 7 blur view?

I’m trying to replicate this blurred background from Apple’s publicly released iOS 7 example screen: This question suggests applying a CI filter to … Read more

## Ball to Ball Collision – Detection and Handling

With the help of the Stack Overflow community I’ve written a pretty basic-but fun physics simulator. You click and drag the mouse to … Read more

## How do I position one image on top of another in HTML?

I’m a beginner at rails programming, attempting to show many images on a page. Some images are to lay on top of others. … Read more

## Creating a blurring overlay view

In the Music app of the new iOS, we can see an album cover behind a view that blurs it. How can something … Read more

## How can I determine whether a 2D Point is within a Polygon?

I’m trying to create a fast 2D point inside polygon algorithm, for use in hit-testing (e.g. Polygon.contains(p:Point)). Suggestions for effective techniques would be … Read more

## Problem with gif with transparent background

Your gif is disposal = 3 that means it needs previous image as it renders incrementally. The problem is the image is with … Read more

## Calculating the angle between the line defined by two points

Assumptions: x is the horizontal axis, and increases when moving from left to right. y is the vertical axis, and increases from bottom to top. (touch_x, touch_y) is the … Read more

## Aspect Ratio with 800×480

800×480 is the most common resolution on Android powered devices. Your aspect ratio would be: 5:3 (which is the same as 800:480 just … Read more