Flash 3D Applications: Putting It All Together - Flash 3D: Animation, Interactivity, and Games - page 381

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// Set the viewer distance d from the screen
var d:Number = 300;

// define the origin of the screen coordinate system
var xo:Number = Stage.width/2;
var yo:Number = 100;

// define the circular path characteristics
var xc:Number = -120; // xc = horiz. center of the circle
var yc:Number = -60; // yc = vert location of the circle
var zc:Number = 420; // zc = depth center of the circle
var r:Number = 450; // r = radius of circle

// define the object characteristics
var numberOfObjects:Number = 9; // number of objects to orbit
var startAngle:Number = 30.1 //30; // starting rotation angle
var target:Number = zc - r; // closest point to the viewer

// calculate the angle between any two objects on the circle
var circleAngle:Number = 360/numberOfObjects;

// create the objects for the circular motion
for (var i:Number = 0; i < numberOfObjects; i++)
{
this.createEmptyMovieClip("object"+i, i);
this["object"+i].loadMovie("j_glasses/glass"+i+".png");
}

visible. Better results for colval were obtained with the distance ratio. In fact, using
the square of the distance ratio as shown gave the results that we were after.

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// to provide aerial perspective ( -255 to +255 )
colval = 100*dr*dr -140;
thisObj.myColor.setTransform({rb:colval, gb:colval,
bb:colval})

Although not done here, to make the project fully dynamic, the content could also be
loaded dynamically through a text document or XML. The more dynamic the content is,
the easier it is to update.