At the moment I am using two mini objects within the line to calculate the slope of the line I have.
I was wondering if there was some easy function within as3 to find the slope of a line that had been drawn out, if not... I suppose I have my own theories on how to do it, such as checking for hit tests in a circle until I find the line.
I'm drawing a simple line with API and I would like to know how to detect what angle the line has and where a ball hits it.Scenario: the player draws a random line in a random angle, a ball comes in from random points and hits the line, the ball then bounces off the line depending on where it hit the line (and of course depends on the line's angle).I draw the red line with this: (on a 400x400 stage)Actionscript Code:graphics.lineStyle(2, 0xFF0000, 100);graphics.moveTo(150, 150);graphics.lineTo(250, 250);The grey, green and purple lines are just demonstation of the ball movement, comming in from outside the screen, hitting the line and bouncing off in different directions. I just made a guess on the angle they will bounce off in.
I just can't figure out how to detect the line's angle and where the ball hits it. So all I have is a ball flying in from random positions and hitTests the line (not coded yet, but no problem to do ball movement and hitTesting with line), I don't know where to go from there until I know how to detect where it hits the line.I know this is a double post (from the Games section), but I realized this place seems to have more activity and not many seem to visit the Games place anymore.
I have the xspeed and yspeed of a round ball, xspeed is distance ball moves to the right each frame and yspeed distance ball moves down each frame.I have 3 different gradients of slopes, one is at 15 degrees off the horizontal.How can I calculate the xspeed and yspeed of the ball after a collision with, for instance, the 15 degree slope.
View 2 RepliesI 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.
View 1 RepliesI'm trying to create a simple graph showing the stock trends for the past few days. In the x axis I have the dates and in the y axis I have the stock value. I have to do this dynamically and I think I can figure it out, but I need help with something else: I need to be able to (dynamically) draw the slope of the line as the user clicks on a point... something like in www_calculusapplets_com/twicediff.html except that instead of having the slider the user will click on the actual line.
View 6 RepliesI'm trying to work out how to create a simple demo that works as follows: A ball falls from the top of the stage.Player is able to draw a line anywhere on the stage. The ball will bounce/roll along the line such that the player can guide it at will. I don't think the coordinate rotation will be a problem for me but I can't figure out how to transform a line drawn by the player into a hit detectable sprite -- or realkly any way that I can get those line coordinates into my coordinate rotation routine. To keep it simple, I'm just working on the first part of the problem, getting the line to where I can hit test or know its position.Here is my code so far:
package
{
import flash.display.Sprite;
import flash.events.MouseEvent;[code]........
It always traces 0,0 instead of my current line coordinates - and even those I don't think would be sufficient.
I'm not a genius in geometry, I'd like to find a point in as3 with the radius and a angle but I don't remember the rule, I know this should be simple!
View 3 RepliesWhat I've done so far is using your mouse you (click & release) you shoot a ball off in that direction using radians. Now what I'd like to happen is when the ball hits the wall it bounces off in it's reflection angle. Eg. if the ball hits the right-hand-side wall travelling at in a radians of -0.65 it should bounce back in the radians of about -2.5
View 3 RepliesI am looking for a way to find a vector if I know one point and 1 angle. Like I have A(x, y) and a vector starting from A(x, y) with an angle. I would like to know the position on a point X (x, y) that can be anywhere on that vector. I only know the coordinates of A and the angle. Possible?? I guess it has to be a function...
View 5 RepliesHow can we find out a moving movie clip's angle. I'm trying to make a shooting game in as3, I need to know the angle of the movieclip(bullet) when it gets hits on the wall. i.e., I have a movieclip named "ball", and which is moving with some speed and the coordinates are initially created by the gun's positions.
Code:
var angle:Number = gun.rotation - 1;
var bubbleX:Number = gun.x-130* Math.cos(angle * Math.PI / 180);
var bubbleY:Number = gun.y-130 * Math.sin(angle * Math.PI / 180);
var ball:MovingBall = new MovingBall();
ball.x = bubbleX;
I need to know, what is the angle of "ball" after it hitting the boundary areas..
On mouse move i have a line drawn using lineTo method. This works like in Paint or most drawing programs: the mouse drawing like a pencil. What i need now, and dont know how to accomplish, is to add a number of mclips over that line. And this mclips should be over the line but separated to each other (different x and y of the drawn line). So in the end when moving the mouse the user should get a line and, every certain distance, a number of mclips over it.
View 2 RepliesIn Flash CS4, I'm trying to change the stroke width of my line or shape, with it selected, but the stroke width slider is greyed out (thus, unadjustable). Is it possible to edit a stroke width after something has been created? If so, how can this be done? I've tried selecting the line in all kinds of crazy ways, but still can't edit it.
View 3 Replies[URL]go to the menu and select education, click the first sub link under education, once there allow for the screen to load, and then click anywhere outside the black border where the text is. You should notice a red line is drawn to the exit link.
View 5 RepliesI want to the user to be able to draw a line and then have a sprite follow the line as its path. Also, it would be nice if the line could be cleaned up after the user draws it with his/her mouse so that it is made up of clean curves/spline.
View 1 Repliesthis is the thing: Using "lineTo" i get a line drawn on stage when dragging a mc. Then i should have four mc (note1, note2, note3, note4) added randomly over this line. I mean, the line is drawn and then over some parts of this line, using x and y of some of the points drawn there, this movie clips should be added randomly. I can make the mc appear randomly, but always in the same point (mouseX, mouseY); i cannot access others x and y of the drawn line. This is my code (noteContainer is a sprite):
Code:
private function drawingAPI(event:MouseEvent):void{
sprite1.graphics.lineTo(mouseX, mouseY);
}
[Code]...
I have an application that creates a chart dynamically. This chart has a lot of information plotted on it (4-6 stock trends). I want to be able to toggle some of those lines with a button. Each trend is drawn with something like this:
Code:
// establish a new Vector object for the commands parameter
var line_commands:Vector.<int> = new Vector.<int>();
line_commands.push(1,2,2,2);
// establish a new Vector object for the data parameter
var line_coord:Vector.<Number> = new Vector.<Number>();
// use the Vector array push() method to add a set of coordinate pairs
line_coord.push(0,0, 75,50, 100,0, 125,50);
graphics.drawPath(line_commands, line_coord);
How would I toggle the line I just drew? My first idea would be to put some of this code inside a function and redraw the line with the same color of the movie's background color. I don't know if this is the best option, I was wondering if I could draw this line inside a Sprite or Movie Clip and just toggle its visibility?
is there a way using AS3 to get objects to follow a path (a drawn line) or will i have to set waypoints?
View 3 RepliesAttached is the .fla. I can't seem to figure out how to make the line drawn to be under the oval (right now it's drawing above it....)
View 2 RepliesI am working on a interactivity wherien i draw lines using a pen/pencil just as in MsPaint application in Microsoft. Ia m done with the pencil/ pen tool and its working fine but I basically want to change the thickness of the line at runtime by using a slider functionality.
Code:
drawing_mc.lineStyle(1, 0x99CC00, 100);
im making a game where when you click a line is drawn in the direction you clicked. I need to use hitTest with it, how would i go about doin that? here is the stuff.This is on the main timeline, it links to the gun. "bullet" is an empty clip
Code:
gun.onEnterFrame = function ()
{
var angle:Number = Math.atan2 (_root._ymouse - this._y, _root._xmouse - this._x);[code]....
i Need to hitTest the line drawn in ^ with a clip called enemy. How would i go about doing that?
wat's the difference between finding a angle using Math.atan2(y,x) function and by finding using the movie clip's rotation (mc._rotation*Math.PI/180);
View 9 Repliesi have made a custom scroll bar however when i change the angle of the scrollbar and the scroll line ( they are on the stage) it continues to scroll verticaly
View 2 RepliesI have drawn a series of lines using flash's graphics.lineTo command, and placed them in an array to be referenced later. Based on certain user interactions, the clips that hold these lines can be shifted to the right, causing the lines to move with them, no longer connecting to the point they originally connected to. So I need to extend the lines by the amount their parent clip was shifted (I've called this incVal). So what I need to do is find the point at which each of these lines ended at, and draw from that point to the left by incVal. How do I get that ending point of the line?
This is my code:
To draw line and add it both to the clip and to an array for future reference:
line.graphics.lineTo(localPoint.x,localPoint.y-10);
membersRef.addChild(line);
parallelArr.push(line);
[Code]....
I have a line randomly being drawn and moved across the stage. Here is the code:PHP Code:
import flash.display.Sprite;
var xValue:Number= 0;
var yValue:Number = 150;
[code].....
I've got a movieclip of a rectangle in my library which I place on stage to attachMovie. Then I create an empty movieclip which I want to use as a mask on that rectangle clip through setMask. Users kan draw into that empty movieclip. My intention is that only those areas of the rectangle clip become visible where the user is drawing a line. So I used this:
Actionscript Code:
_root.attachMovie("clip", "clip", 0);
_root.createEmptyMovieClip("line", 1);
clip.setMask(line);_root.onMouseDown = function() {
line.moveTo(_xmouse, _ymouse);
line.lineStyle(10, 0x00FF00, 100);
this.onMouseMove = function() {
line.lineTo(_xmouse, _ymouse);
updateAfterEvent();};};
_root.onMouseUp = function() {
this.onMouseMove = null;};
But that doesn't work: both the line drawn and the rectangle clip become invisible. I know it works because without the setMask part the line is drawn. The other way around does work (line.setMask(clip)): the rectangle clip is now masking the drawn line so only the line becomes visible within the rectangle region. But I want it the other way around: the rectangle should become visible through the lines that are drawn!
I am trying to draw a line from x1, y1 to x2,y2 and i want it to be a line that repeats a pattern from an image. All I can see is that you can only draw lines and change their color or thickness but I would like it to repeat an image. Is that possible or do i have to use a really long and thin rectangle with a bitmap fill?The problem is I am making a game where the user will be able to actually draw the line so i have to make it be created dynamically. The game fantastic contraption [URL] has in the game a feature where you draw lines of any length and position that are filed with a picture.
View 13 RepliesI want to make an animation of hand drawn line by motion tween. That is when test movie, a line is slowly drawn from left to right. How do I do that ?
View 1 RepliesI know some basic trig. but how do i find an angle from an anchor point and a moving point?
adjecent = _root.anchor._x-_root._xmouse;
opposite = _root.anchor._y-_root._ymouse;
hypotenuse = ((adjacent ^ 2)+(opposite ^ 2)) ^ 0.5;
I was wondering if it possible to write up some AS that will take line paths that you have drawn and convert them into a Path object? For example say you drew a jagged line from left to write, would there be a way to have AS convert that into a Path object.
View 11 RepliesIve made this rotation with AS. But Id like to make the bar to move from angle A to angle B smoothly.
How can I do this?