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 Tutorials » Actionscripting
This tutorial assumes you are comfortable creating movie clip symbols and giving them instance names as well as writing basic functions in ActionScript.
function perfectLine(myClip1, myClip2 ,suppliedDepth ){//_slope: First let's find the slope of a line between the two clips _slope:Number, _slope = -(myClip1._y - myClip2._y)/(myClip1._x - myClip2._x); //These variables represent the total left, right, top and bottom //of the screen to which we will draw a line. We will use the slope that //we just found to calculate these variables later on var _totalLeft:Number; var _totalRight:Number; var endY:Number; var staRtY:Number, var newDeltX:Number; // Next is where the movieClip in wich we will house our line. //Remember that we need a MovieClip to draw a line // (though in Flash 9 it will no longer be necessary to draw in a mc) var drawLineInThisClip:MovieClip; //The _stringCount is a just a variable that we will append to each line's movieclip // Each line needs to be associated with a movieclip. Each clip, of course, // requires its own, distinct depth-- we might after all want multiple lines. // on the Stage and we can now assign them different depths var _stringCount = suppliedDepth; //The next 3 variables let you customize the following properties of our //humbly named 'perfect lines' //They're pretty self-explanatory var lineThickNess = 3; // How thick the line is var lineRGB = 0x000033; //the color of the line var lineAlpa = 90; //The Alpha of the line //_totalRight, not surprisingly, represents how far on the right we want to be able to draw // Since we want to be able to draw ALL the way to the right we use 'Stage.width' //_totalLeft is the x position on the left which is zero. Remember in Flash's //coordinate system x values start at zero on the absolute left. _totalRight = Stage.width; _totalLeft = 0; //Here is where we create the movieClip that will house our line. drawLineInThisClip =_root.createEmptyMovieClip(('line'+_stringCount), suppliedDepth)
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Draw Full Line Through Any Two Points
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