ActionScript 2.0 :: Animated Curve Drawing Between Any Points Dynamically?
Sep 18, 2006
I have a world map on which I display some data. I read long and lat coordinates for two countries from an XML file which is updated with different coordinates everytime. I then map the coordinates to X-Y axis using some projection method.
So, I have x-y coordinates for two countries. I wanna draw a curved line between those countries but curveTo method draws the curve in one shot. I want to animate the curve drawing part so it looks like it is being drawn real time.
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Similar Posts:
Jul 13, 2010
How can I animate a curve being drawn with as3 drawing api.I am not interested in masking it out or other tricks. I am interested in drawing it whith the api.This would be the equivalent, but only a straight line:
var steps:Number = 30;
var currentStep:Number = 0;
var startPoint:Point = new Point(100,100);
[code]....
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Jun 25, 2007
I'm trying to draw a curve based on 24 data points. I want to draw a curved line based on the average of these 24 points. I can draw a line from point to point no problem, but would like a smooth curve. The white dashed line is what I'm trying to achieve:
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Aug 26, 2011
I was hoping someone could help me working out some advanced data reformatting. What I'm hoping for is a function where I can input a value along with an array of key positions like so:
function remap(percentage:Number, keypoints:Array) { ...
The array would start with the minimum and end with the maximum point, with nested key points along the way. For example, I would input something like remap(0.25, [0:0,80:50,100:100] ) and the function would 'imagine' a spline curve graph from (0,0)-(100,100) with a key point of (80,50), then return the y value that is 25% along that graph.
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Mar 20, 2011
I try to calculate all the points on a curve.
The curve decided by the width(X on the picture) and height(Y on the picture) properties of a movieclip.The distance between each green point on curve is the same.
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Nov 14, 2009
For 2 weeks now, i have been trying to work out this issue and still i have had no luck.. i dont even know what im looking for.
See image attached to explain better than words.
My idea is i need to generate a nice curve between graphical points but in a way that produces smooth curves at runtime.
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May 9, 2011
First i want to say its my first post and i've been diging straight up gold from this site and i love it and everyone out there smart enough to give out solutions.So basically am writing a game and i have bezier curve that controls where an actor moves. Am using only 3 points (start, control1, end) and everything is fine.Now i want to create a bezier curve that passes through a certain point (r1) at t = 0.5 . The problem being that i have my start point, my end point and my point (r1) at t=0.5, and i need to find the control point.
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Feb 3, 2005
I'm attempting to make a curve drawing tool a bit easier to use.Rather than drawing a basic curve and then clicking on the control point to change it, I would like the user to be able to click on the curve itself to change it, much as you do in the FlashIDE.So, given start and end points, and a point on the curve, how do you determine the control point for use with the MX API?(I googled this, but found mostly info on cubic rather than quadratic curves)
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Feb 3, 2005
I'm attempting to make a curve drawing tool a bit easier to use. Rather than drawing a basic curve and then clicking on the control point to change it, I would like the user to be able to click on the curve itself to change it, much as you do in the FlashIDE.
So, given start and end points, and a point on the curve, how do you determine the control point for use with the MX API?
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Dec 30, 2009
i have a bezier curve that is generated dynamically now i want to mask an image with it to produce a cut of face functionality just like in elfyourself.com or in jibjab.
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Feb 1, 2011
I just need a simple code of drawing a text curve in flex
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Jan 31, 2008
so maybe this animation is not that cool. But line 'draw-on's like this are quite common and I cannot find an easy way to do this in flash. I have tried masks, but (as far as I can tell) the line path is too complex for a mask. I have tried animating it using shape hints, but flash just gets hopeless confused as to how I want the line to animate on. I could export this as an swf out of AfterEffects, but the file size seems way too big for what the animation is. I have begun to realize that maybe this type of animation is often achieved using actionscript.
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Nov 3, 2003
From the Robert Penner code given in this tutorial: [URL] i was wondering why controlx and controly has to be so complicated. I've tried changing it to just _root._xmouse but it messes up. I don't get this, shouldn't the curve point be the same point as the mouse?
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Sep 9, 2009
I want to curve a dynamic text from a straight line to circular curve (using a slider). I have placed the characters of the string in each textfield created at runtime.
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Oct 19, 2008
draw a squiggly or wavy line in the MOUSE_MOVED event as the user clicks and moves the mouse.
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Jan 16, 2012
In flash, I use lineTo to draw a line between two points. This is working well, but I'm finding that on slower computers, the line is jagged because not as many mouse events are firing.I want to 'smooth' the line out, to add more points in between each point that the mouse registers:
The black lines show the result, the green ones are what I want. The red dots are actual points, and the green ones are interpolated.I have tried to code this myself but I can't seem to get it right, here is the code anyway:
var interX:Number = lastMouseX+(lastMouseSpeed.x/2);
var interY:Number = lastMouseY+(lastMouseSpeed.y/2);
//Also tried: lastMouseX+(this.mouseX-lastMouseX)/2;
// also jittery
[code]....
the result is much more jagged than the normal one.
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Oct 6, 2009
I want to draw a curved line between random point. How can I do this? The random points are actually x,y positions of movie clips dragged on the stage and I want to code curved lines between them.
Im looking at curveto in as2 but not sure how to to do it?
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Feb 2, 2010
I found this code in AS2. It draws an outline of a circle:
[Code]....
I'm only just embarking on making the move to AS3
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Apr 19, 2011
I'm trying to animate a line by drawing using tweenmax and lineTo, but flash seems a little confused about the coordinates of things. The lines are also drawn a little shaky. Here's my code:
var childArray:Array = new Array(sC0,sC1,sC2,sC3);
var curChild = 0;
function drawLines(){
[code]......
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May 10, 2007
I have a curveTo an anchor point and a control point.Then I have a function that will return the x and y of a point along that curve if I give it a number as a percentage of the curve (0 to 1).It looks like this, and works perfectly..
Code:
function drawOnCurve( interval:Number, x0,y0,x1,y1,x2,y2)
{
interval = Math.max( Math.min( 1, interval ), 0 );[code]....
x0,y0 are the start point, x1,y1 the control point and x2,y2 the final anchor point.But... I want to give it a _y value instead of a percentage (interval) and it return where on the curve that would intersect.
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Jan 30, 2007
I've tried to loadClip an animated GIF only find the first frame being displayed.
How should I go about dynamically loading an animated GIF? I'm working on a tile based game (editor right now) and would like to have some tiles to be animated to add some flare.
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Mar 14, 2011
i have a flvplayback component onto which i am loading a video.
Quote:
To mimic next frame and previous frame actions i am adding cue points to the loaded for every second of its length. The next frame /previous frame functions implement seekToNextNavCuePoint and seekToPrevNavCuePoint on the video. But
Quote:
The actual seek to the cue points breaks i.e does not happen throught. if its previous it goes to the first cue point. if its forward seek it breaks n goes to the first frame after a few seeks.
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Nov 24, 2004
I was wondering if we can load animated gifs dynamically using the .loadMovie or anyother method?
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Sep 16, 2010
Basically I'm using the curveTo function to draw some lines for flight paths, what I'm not sure how to do is dynamically finding the curve points, so for example if you look at the ryan air site: [URL]
current_line.graphics.curveTo(curveX, curveY, map.mouseX, map.mouseY);
I need to find the curveX and curveY
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Mar 14, 2011
I have a flvplayback component onto which I am loading a video. To mimic next frame and previous frame actions I am adding cue points to the loaded for every second of its length. The next frame /previous frame functions implement seekToNextNavCuePoint and seekToPrevNavCuePoint on the video. But its not working the way I expected it to.
Here is the actual class file. You can directly compile it with an fla file containing button instances in the library for play pause stop... Also you would need some sample flv file.
[Code]...
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Mar 14, 2011
i have a flvplayback component onto which i am loading a video.To mimic next frame and previous frame actions i am adding cue points to the loaded for every second of its length.The next frame /previous frame functions implement seekToNextNavCuePoint andseekToPrevNavCuePoint on the video. But its not working the way i expected it to
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Jun 12, 2009
I'm relatively new to flash, and just upgraded from Flash 6 to Flash 10. This is a HUGE jump for me, but strangely, I already feel more at home in Fl10 than Fl6, as it is more object oriented, and as a hardened programmer, I like.I'm attempting to create dynamically animated objects in a flash application. I can't think of a way to approach the issue without either a: converting each keyframe into a bitmap, or b: brute-force generating each frame every step of the way.Seeing as my application will have hundreds of the little bastards on the screen at any time, option b is out of the question, I presume.
So, essentially, I have a few questions about AS3:
1) Can a curve be modified after it has been drawn, or must it be cleared, then redrawn each frame?
2) Can a IK chain modify curves, or is it only per-symbol?
3) How fast can flash render complex objects in 3D? (I.E. would drawing hundreds of 400+ poly objects be too much?)
4) How fast can flash draw vector objects? (I.E. would drawing hundreds of creatures made up of dozens of curves be too cumbersome?)
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Jan 27, 2010
I've got a movieclip with two layers - a background movieclip, and above that, a mask movieclip (as you might guess, this layer is masking the first). Due to design necessity, the mask is animated on the timeline across 60 frames.The problem arises when I use an Event.RESIZE listener to change the width of the parent movieclip when the browser window is resized. Any code to reference the mask, i.e
parentMC.contentMask.width = stage.stageWidth;
parentMC.contentMask.x = frame.width/2 - frame.contentMask.width/2;
Simply results in the mask animation not playing at all.
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Apr 24, 2003
How can I draw a simple circle using actionscript?
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Sep 16, 2011
I have 4 coordinates from which i created a rectangle(using lines). I also created buttons dynamically. It works great for straight line. But when the coordinates generate diagonal lines im having a problem in making it go below the lines or fitting it inside the figure.See my pic for better understanding. I have also figured out how to rotate the button. Here is my screenshot:Here is my code: To generate the lines:
Code:
var myLine:Shape = new Shape;
myLine.graphics.lineStyle(1, 0xFF0000, 1);
[code].....
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