ActionScript 3.0 :: User Drawing A Line By Dragging A Point
Aug 19, 2010
I've been unable to find info on this because it's tricky to find the correct keywords. I want to allow the user to draw a line so that the application can measure the distance between two points chosen by the user. I could let the user click on one point and then the other but it would be much better if, after clicking the first point, a line would follow the mouse cursor like in most graphic applications. How would you do that? Is there a convenient method for that? Maybe use the MOUSE_MOVE event after the MOUSE_CLICK and continuously draw a line?
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Oct 27, 2011
Lets say I have two objects, and I want to use action script to draw a line connecting them, which will update automatically as they are moved/ dragged.Can anyone show me how to do that, and also how to control line's parameters like colour, weight etc?
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Jan 9, 2012
I am developing a white board application which allows the user to draw line with arrow head (some like Microsoft Word line with arrow feature). I am using graphics property along with lineTo() method to draw a line. Now i have to draw a angular arrow on the last point of line. I am drawing the arrow by connecting the points around last points. As 360 line can pass through this point and each line can have a different angle of arrow.
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Dec 26, 2006
is it possible to somehow use a the clear() function on a line that has been dynamically drawn only at a certain point? i need a line to be drawn and then gradually erased with time. currently i'm drawing a green line and then a few seconds later, a start up a function that creates a white line above it. it works great if this line is above a white background, but if it's above some other element, you see a white line.
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Dec 2, 2007
Any way to get a curved line to draw from a known point a to a known point b. Point b will always be changing and will be in any position around point a. I can work with an existing line from a movieclip and change it somehow, but right now I can't find any way to accomplish it.
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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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Nov 23, 2011
I am using Flex 4 and AS3 and I am trying to make it so that the user can draw a freehand line with the cursor - I have this part done.However, I also need the line to be a dashed line instead of one solid line like it is now. below is my code I am using. I have found some examples on how to do this, but they are all for straight lines, not for a freehand line.
Class File (DrawingArea):
package
{
import flash.display.BitmapData;
import flash.events.Event;
import flash.events.MouseEvent;
[code]....
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Aug 19, 2009
I am using AS2 with Flash 8 Professional So, my problem is that I currently have a man in the middle of the screen, who shoots a line towards the mouse when I click. However, when I use hitTest to see if the line collides with another object, Flash recognizes the line as a large box if it is diagonal, so the hitTest isn't very accurate. The line only satys there for one frame, so I can't have the usual moving-bullet-style. I am either looking for a way to create an imaginary line with AS from the starting point to the mouse and beyond, and tell whether or not this line intersects with an object... or some other way that I haven't thought of to fix my problem. Keep in mind that the line rotates from a center point towards anywhere around it for 360 degrees.
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May 3, 2006
How can I move a point (or circle) slowly and the point let behind a line.When the point turn back the line will be erase.
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Dec 30, 2003
how 2 sript: to draw a line ( 4 example ) frm point A to point B and then code it such that the viewer can see the line being drawn ?
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May 10, 2005
I need to to incorporate a functionality where the user can use his mouse to draw a rectangle by dragging his mouse over the canvas - much like the Rectangle Drawing Tool in the Flash Authoring environment. The requirement is something like a rubberband tool where the user can define a portion of a map by drawing a rectangle over it. The coordinates needs to be captured.
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May 10, 2005
I need to to incorporate a functionality where the user can use his mouse to draw a rectangle by dragging his mouse over the canvas - much like the Rectangle Drawing Tool in the Flash Authoring environment. The requirement is something like a rubberband tool where the user can define a portion of a map by drawing a rectangle over it. The coordinates needs to be captured. Can anyone help me with the actionscript.
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Aug 18, 2009
I have created a portfolio which is supposed to give the impression that it is my windows desktop that you are looking at. I have made it so that I can drag MSN Messenger around now, but I have come upon a problem I can't figure out.
I have two movieclips representing my windows. One for the open window, which contains the animation to open a windown from minimized, and the window in open state. And one which contains the animation of the window closing. The problem is that when I start to drag the movieclip, I don't know how to "lock" the close movieclip to the open moviclip, so that they remain op top of eachother. Also, the position on the stage the windows gets minimized to(and maximized from) moves with the movieclip, making it look stupid if you minimize a window after having dragged it. Look on "Om Mig" on the site to see what I mean.
Here is the site
Is there a way to fix the other movieclip to the drag, and is the a way to fix the position the windows tween to when they are minimize and maximized, after the movieclips have been dragged?[code]...
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Jan 1, 2010
I wanted to create effect in AS3 like initially image is still and when I pull image then that image should drag and hang. And, when I again start dragging that particular image then its registration point should change and image should hang on new registration point.
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Jun 19, 2009
This is one of the threads that was deleted. I've come up with the same problem: how do you go about dragging an object around a fixed point (rotation)?
I can do a normal drag & drop, but with this i don't even know where to start
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Oct 8, 2009
What is the difference between dragging a movieClip to stage from the user interface and inserting it from code? What I mean is....I noticed that if I drag a movie clip from the library to the stage, give it an instance name ('xx'), I can access it from code using "this.xx". However, if I add the movieClip from code using:
var ch = new MovieClip();
ch.name = 'xx';
addChild(ch);
I cannot access it using this.xx, but I have to access it using this.getChildByName('xx');
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Jan 9, 2009
Im building a pretty simple drawing board in flash, i got this code from this forum and it works fine (there is more to it but this is the drawing part)[code]This works fine. But i want to be able to erase the drawings, step by step this is ths tricky part, ive looked everywhere(ok not everywhere) but in a whole lot of places but the only thing i found is how i could delete everything with removeChild and that in not what i want. Maybe i need to change the function abowe? Please help me to get in the right direction. What should i read about /look at?
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Feb 21, 2012
I'm working on a Flash project in which users are able to draw on the stage. Once they've drawn their lines and turned off the pen tool, though, I want them to be able to do something unusual. I want them to have the ability to drag and drop the lines they've drawn. I actually don't really care whether they pick up individual segments separately or everything together, but they need to be able to drag and drop in some way, shape or form.
The line-drawing code currently looks like this:
ActionScript Code:
onMouseDown = function(){
if (penOn) {
if (erased7 == true) {
[Code]......
When I make line7 draggable (by dynamically appending event handlers to the line after the user creates it), subsequent attempts by the user to draw lines cause the new lines to appear within the confines of the movieclip already created, no matter where the mouse button is pressed. The problem, as I've been able to determine, is essentially this: When you don't make the line draggable, the dimensions of the line movieclip expand every time the user clicks the mouse button. But appending the event handlers in effect freezes the movieclip, and its dimensions aren't changed after that, at least not by this code. I've tried workarounds, but no luck. I've also tried creating a new movieclip each time the user tries to draw another line, but that's failed as well
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Apr 24, 2011
Im in my final year of year 12 and need to have a car rotate in flash by either mouse movement or dragging by the user. Ive tried googling and being lower then noob level on adobe flash I have no idea about anything. I have created a car model in 3ds max. It is of high detail and I wanted to keep it that way. An example of what I wanted to create would be [URL]
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Jul 30, 2011
Okay, there are a few things I want to know how to draw in one-point perspective: a toilet, a shower, a bath; basically I want to know how to draw everything in a bathroom.
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Sep 6, 2009
I have run into a drag and drop issue .I have an item that I would like to drag and drop. Seems simple enough, but I also want to make it that if the user drags the image off the screen, that it stops dragging and returns the image to the center of the screen. What happens now is that it continues dragging and sticks to the cursor if you release outside of the viewable area. The original piece has a lot of other things going on, so I ve created a simple piece with the AS in the timeline that shows only this particular issue.
Code:
var mrT:MC_mrT = new MC_mrT;
addChild(mrT);
mrT.x = stage.stageWidth*.5;[code].............
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Apr 21, 2009
I'm doing this project, about 2 lines intersecting each other(the 2 lines are not always on the same position). I try to find the intersections point using collision detection method but how do I place an object on the intersections point?
if(line1.hitTestObject(line2)) //
So this is how we find the intersection point but we do not know how to draw / place an object on the intersection point.
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Mar 12, 2009
I'm using the code below for an infinite looping menu but this menu code makes it move on its own. I want the looping/movement to be activated by the user literally dragging up and down. Does anyone know how I can alter this code so it responds to the user dragging up and down.
[Code]...
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Nov 19, 2009
How do i animate a drawing line? I mean like from point A to point B, the flash will show it is "drawn" itself.Can I do it simply without actionscript? Is it possible? Because I have many lines to draw, to make it into a diamond.
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Apr 16, 2009
What I'd like is the ability to draw a line with the drawing tools in Flash, and have that line appear onscreen as if it were being drawn. I don't think there's a way to do that with the animation tools (I'd like to give it a go, but I have no idea, once I've drawn a line and converted it into a symbol, how I could access the anchor points and whatnot of said line to then do some funky stuff with curveTo, or whatever better solution is out there...
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May 15, 2009
How can a create an animation of line drawing itself.
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Nov 9, 2009
With several flashes I'm trying to create, I find that I need to know how to depict a line being drawn or a plant/vine growing (same concept right). Obviously frame-by-frame animation can be used, but that's quite tedious. There must be some other, more productive way to pull it off. Example of the vine: [URL] I've tried shape tweens with shape hints but it didn't render very well at all.
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Oct 18, 2010
I am looking for a smooth line drawing effect as in the pencil tool in Flash. I need to implement the same using as3.
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Mar 26, 2009
I'm having troubles with the width of a line using the lineTo and lineStyle function, I can put setting the thickness and noScale parameters, and it works fine for no longer lines than 32000 pixels, but when I try longer line, the thickness changes to a bigger width. if you want to try what I'm saying you can prove this by changing the num variable:to 33000 for example:
num = 32000
this.createEmptyMovieClip ("Envolvente", 100);
this.Envolvente.lineStyle(0,0x00CC00,100, false, "none",
"round", "miter", 0.8);
[Code]...
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Sep 4, 2011
i'm developing a game for mobile devices where I need to draw many objects and some lines(1~3 just occasionally).
my problem in short is: Line drawing is too slow for iPhone4
objects are drawn with bitmap, so it's pretty fast with GPU support. drawing lines are slow.
a end point of a line follows mouse cursor, so it changes every frame.
here's how i did it
initialization step:
var img:Shape = new Shape();
addChild( img );
[Code]....
that gives me 47~48 FPS on my iPhone. +2 FPS but still way too slow for a simple line.
without the line, i can maintain my whole game around 30 FPS. with the line, it goes below 20.
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