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The Minds Eye BézierCurve
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The Minds Eye BézierCurve is an XTRA for use by developers
writing lingo for Macromedia Director versions 8.5 to MX 2004 and currently under
Win32 Operating Systems only.
It is very simple and easy to use. It's an Xtra that allows a Lingo
programmer to create curved lines based on 4 points (2 end points and 2 control
handles).
However, it's not just for drawing curved lines...
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Create 2D animations
The Minds Eye BézierCurve XTRA contains 7 functions for working with Bézier curves in different ways.
Essentially, a call to one of the handlers generates a list of points. You can use these
points to draw curves or create animations.
For example, each time the exitFrame handler is called,
you can simply set the location a sprite to be the next location in the list
(see example at bottom of page).
Create 3D geometry and 3D animations
The Minds Eye BézierCurve XTRA also works with 3D data. By supplying four vectors,
BézierCurve XTRA returns a list of vectors in 3D space. Also, the BézierCurve XTRA can
read XML files that have been exported from 3D Studio MAX using the
FREE Minds Eye Shockwave 3D spline exporter (included in the
Full Evaluation Bundle).
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Example Applications
Download the Free Evaluation BezierCurve XTRA plus a demonstration director application
containing a selection of working example BezierCurve Applications.
Each of the following icons displays a screen-shot from the example Director
application
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Download the Full BézierCurve Evaluation Bundle.
Contained within this zip file are:
- An evaluation copy of the Minds Eye BézierCurve XTRA
- The BézierCurve XTRA compiled help manual
- An example Director movie that demonstrates many uses of the Minds Eye Bézier XTRA
- A MAX Script file to run within 3D Studio MAX. This allows you to export 3D splines and animation paths as XML files.
- Example XML files that have been from exported 3D Studio MAX.
- Example 3DS MAX Files
>> Download Now!
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Download the BézierCurve Compact Evaluation Bundle.
Contained within this zip file are:
- An evaluation copy of the Minds Eye BézierCurve XTRA
- The BézierCurve XTRA compiled help manual
>> Download Now!
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Buy the The Minds Eye BezierCurve XTRA
get hold of a copy of the BezierCurve XTRA today..
>> Click here
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Example
The following frame behaviour script creates an instance of the BezierCurve Xtra and
uses it to move sprite(1) along a Bézier on each call to exitFrame handler.
property ptList
property pInc
on beginSprite me
pts = [point(290,300),point(300, 50),point(450, 310),point(440, 40)]
ptList = []
oBez = new(xtra "mevBezierCurve","")
oBez.mevcGet2dBezier(pts[1], pts[2], pts[3], pts[4], 200,ptList)
end
on exitFrame me
--increment pInc if less than 200 (otherwise reset it back to one)
if pInc < 200 then
pInc = pInc + 1
else
pInc = 1
end if
sprite(3).loc = ptList[pInc]
go the frame
end
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