Ryan Bosinger

Problem:

You publish your SWF from the Flash CS3 IDE and everything looks fine. You, or someone else checks out the SWF in a browser and although everything kind of works, certain elements like text fields and component buttons aren’t rendering properly!

Solution:

Sometimes certain revisions of the Flash 9 player behave differently than expected, but there is a way you can look into it. Read on…

Problem:

You want to save an image from Flash to a server using Actionscript 3.0 and ASP.NET.

Solution:

Read this article!

Problem:

You need to scale a movieclip/sprite from its center point, but its registration point is at (0,0) and you can’t and/or don’t feel like putting this object in the center of a container movieclip and rotating that

Solution:

TCBWMO (Take care of business with the matrix object).

Problem:

You’re working some math equations with Actionscript and tracing the results when you notice some results are off by a very small value.
output:

2
2.1
2.2
2.3
2.4
2.5000000001
2.6
2.7000000001
2.8
2.9
3

Solution:

This is called a floating point error and is apparently a normal computing error that affects all aspects of computing, not just flash. You can fix this by running the values through the correctFloatingPointError function I’ve posted below.

Problem:

You need to rotate a movieclip/sprite around it’s center point, but its registration point is at (0,0) and you can’t and/or don’t feel like putting this object in the center of a container movieclip and rotating that.

Solution:

Use the transform matrix and show it who’s boss.

 private function rotateAroundCenter (ob:*, angleDegrees:Number, ptRotationPoint:Point) {
      var m:Matrix=ob.transform.matrix;
      m.tx -= ptRotationPoint.x;
      m.ty -= ptRotationPoint.y;
      m.rotate (angleDegrees*(Math.PI/180));
      m.tx += ptRotationPoint.x;
      m.ty += ptRotationPoint.y;
      ob.transform.matrix=m;
 }

Problem:

Bitmap images in Flash look like crap when animated to rotate or scale.

Solution:

Right-click on the image in the library, select Properties and check Allow Smoothing