ActionScript 2.0 :: Calculate Where Lines Intersect
Apr 3, 2005
I have been playing around with the fmx2004 drawing api. I am drawing a complex shape and all is well but I would like to make the lines smoother. I haven't been able to find a smoothing function but I am working on a custom solution using the curveTo method. I have to be able to calculate where two lines intersect. i have their slopes and two points along each line, so now all I need to do is calculate their intersection. I can do it on paper but not in flash
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Apr 3, 2005
I have been playing around with the fmx2004 drawing api. I am drawing a complex shape and all is well but I would like to make the lines smoother. I haven't been able to find a smoothing function but I am working on a custom solution using the curveTo method.
I have to be able to calculate where two lines intersect. i have their slopes and two points along each line, so now all I need to do is calculate their intersection. I can do it on paper but not in flash
View 5 Replies
Aug 22, 2010
I have a MovieClip that has four circles on the stage. Each circle draws a line to the other three circles. I'm trying to figure out how to find the intersect point between all of the lines. If there is no intersect point, then the circle in the middle should become the intersect point. I've uploaded the SWF here: [URL].
Here is the code for generating the lines:
ActionScript Code:
package {
import flash.display.*;
import flash.events.*;
import flash.geom.*;
import flash.sensors.Accelerometer;
public class IntersectTest extends MovieClip {
[Code] .....
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Oct 15, 2009
Not sure how best to put this into words Ddoes the depth manager always keep one on top of another, or can planes intersect, overlap, go through one another?
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Mar 3, 2011
I need to determine if a ray from a point (point and angle or vector) which goes to infinity intersects a line segment (two points), and if so, what direction it crosses (left or right.)I've been searching around on google but haven't had any success implementing the math solutions.I'm trying to do is implement the winding fill rule described here to determine if a path is clockwise or counterclockwise.
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Jul 1, 2011
I as this working in AS2 and need to update to AS3...shows that AS3 doesn't like sloppy coding. Here's what I need: I pull data from an XML and that works when I put the data into a dynamic text box. However, I can't seem to get the date of birth into a variable. I have some code that calcs age in years but uses a string literal that I thought I could just replace with a variable from my XML...ain't a workin'. Here's the code I have:
ActionScript Code:
import flash.display.*;
import flash.text.*;
import flash.events.*;
[Code]......
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Jan 3, 2011
Looking for any info on how to determine the overlap of two shapes created with AS3, and preform the usual shape manipulations on them, like combining the two shapes together to create a new shape, punching the overlapping shape out of the underlying shape, or creating the intersecting shape from the two objects.
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Aug 26, 2011
Actually my project is about dynamic readjusting of nodes i.e. let say if you have 15 nodes( assume point objects) and suppose lines are drawn between any randomly selected two nodes,then the corresponding figure obtained should be readjusted that no two lines should intersect except at nodes.
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Aug 17, 2011
I have been working on a map viewer based blitting technique. As part of the map I need to draw approximately 50000 lines and performance is currently really poor.
Code: Select allvar movie:Shape = new Shape();
for( ... )
{
movie.graphics.clear();[code].....
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Nov 15, 2009
My code is on the main timeline.I call a function loop to draw lines between them.The lines are drawing between the right x, y values BUT between those values on the main stage, not those values within the kite.For example, dot1_mc is at x100, y0 inside kite. the line that should go from its center, draws from stage x100, 0.How do I draw the lines inside kite so that they draw between the dots?Heres my code that draws the linesPHP Code:
function loop():void{ lineDrawing.graphics.clear(); var a:Point = new Point(kite_mc.dot1_mc.x, kite_mc.dot1_mc.y); var b:Point = new Point(kite_mc.dot2_mc.x, kite_mc.dot2_mc.y); var c:Point = new
[code].....
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Jul 21, 2010
I am trying to create a mindmap where the user can drag points about the screen. I have gotten as far as drawing the line via actionscript, and drag+drop the points (defined as movie clips on stage). This is the existing script - I don't know how to get the lines to follow the points. Something to do with ENTER_FRAME or updateAfterEvent?
var line:MovieClip = new MovieClip();
line.graphics.lineStyle(1,1);
line.graphics.moveTo(ptOne.x,ptOne.y);
[code]....
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Aug 22, 2009
I'm using a combination of Paul Duncans php ZipStream [url]...
Works fine in Air, but when running Flex in browser, the zip needs to include a Adler32 checksum in the header for FZip to be read.
How can I calculate an Adler32 checksum for the zip in php?[code]...
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Aug 18, 2010
i'm getting the xmldata from the httpservice (using cgi) and i have not set resultformat(it is coming as an object only),the xml data in this format
[Code]...
when i was tried to count the employee tag,i getting the problem, my code will like this:
[Code]...
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Jan 14, 2011
I have the following function in my FogOfWar class, it calculates if its team can see the position that is passed on the arguments:[code]My problem is that, with only 3 characters in the game, it can only run 4000 times per second, which is not too much.I can implement a cache, so it caches the most commons positions, but, what else can I do to optimize it?
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Oct 21, 2009
I need to calculate the value of a formula which is passed dynamically by using text box.This formula contains a set of variables which are already declared and assigned a value(hard coded). I will provide a submit button , on clicking this button I must be able to evaluate the formula that I have passed dynamically using the text box.
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Apr 28, 2011
I have problems with calculating values of a childnode.
My XML structure
<FILE>
<NUMBER TYPE="test"> 1 </NUMBER>
<NUMBER TYPE="test"> 2 </NUMBER>
</FILE>
[Code].....
the trace outputs: 2 (last row)
and not 3 as i expected. De Element++ is not working.
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Nov 30, 2006
I'm working on a game which will involve space battles, and automated turrets. The turrets are giving me the headache right now. Here's what I got so far.
[URL]
The problem is, that the turrets aim at the center of their target, instead of aiming in front of their target to compensate for their movement. I can't seem to crack the equations needed to get the right rotation, for the turret to fire from. The data the turret has avaible, or that I could easily make avaible to it, are:
- The distance to the target (and it's x and y components)
- The current speed vector (the size and rotation)
- The angle between the heading of the target and the turret's location
- The speed of the turret's shot (fixed speed)
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Aug 30, 2003
write down the formulas that flash MX uses when you use the functions tan/sin/cos...I am trying to get a good grasp on these things and it
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May 20, 2010
how to find the biggest possible area within a rotated image (the black rect in attached image), but can't figure out how to calculate the points TL, TR, BR, BL to draw my rectangle (the red rectangle in attached image).
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Nov 9, 2009
I am trying to create a 30 day trial period limitation in Flash CS3. I am having a problem with checking the number of days. I am using zinc mdm to get the date of an external file. Following is the code I am using.
var d1:Date = new Date(mdm.FileSystem.getFileDate("c:\myText.txt")) ;
var d2:Date = new Date();
//(Date2 - Date1)/
[Code].....
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Jan 16, 2012
I'm basically trying to emulate Photoshop's Vanishing Point tool where you can define the 4 2D points and the 3D plane is calculated from that information, in terms of the rotation of the plane relative to x y and z axes.
So if you have an image like this one:
And you define the points of the four corners, maybe like this:
It would define the 3D plane that the surface must live on relative to the x y and z axes. Researching this has led me to some tutorials on drawTriangles and Homographies, but they all seem to be focused on mapping bitmap data and I can't seem to find anything that defines a 3D plane itself.
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Jul 8, 2009
I am trying to figure out a way to calculate time diffrence betweennow and a set timevar
settime:Number = 2:35am
and
now would be getDate();
[code].....
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Mar 17, 2010
I have lot of child inside my xml data.I want to calculate total my child list
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Apr 27, 2010
So my array contains marks for a ficticious class and i need to be able to calculate these marks to give me a class average which is this formula; all marks added / number of marksIs there a way to do this within an array?
My code for the program so far is:
// Create Arrayvar marks:Array =["100","76","80","54","23"];// Button Functionenter_btn.addEventListener(MouseEvent.CLICK, onClick); function
[code].......
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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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Dec 20, 2011
So i got the ability to add a numeric value to an mc down. So every time i pick up a coin with a value attached to it, and place it on a hand mc, it'll trace the value i've assigned. very excited on this aspect. I've been searching around for the ability to have a master value that I set say for example 5.0. When I hit another mc, this function (that i need to find out about) would check the values that are resting on the hand. I could not find the proper syntax. I have a very good idea of where it would go and what it would look like but I'm missing the forumla. Now I've bold/underlined the area that I think the check would be executed. When you hit the checkout button, it would tally the myValue sums that are currently resting on the hand mc. So my thought train is that I'd declare another variable like masterTotal (the value I want the person to match), and the handTotal (what is resting on the hand).
import fl.transitions.Tween;
import fl.transitions.easing.*;
import fl.transitions.TweenEvent;
[code].....
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Dec 20, 2011
I have a running total. When an mc hits the table or hand it'll adjust the total. The problem is I only want the total to reflect when an object is resting on the hand mc. If i remove something from it, remove its value from the total. Now to be smart I have it add when an mc hits the hand, and remove a value if an mc hits the table. The problem, if I never touch the hand and keep dropping the mcs on the table, i get a negative value. Is there a way to calculate a total only when a mc rests on the hand mc
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Feb 13, 2010
I need a way to calculate lighter hex color(s) based on a provided one. I realize I could use a color transform, but I need the actual value in order to generate a gradient.
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Jun 6, 2010
I have this datagrid which has columns with a NumericStepper as an itemEditor where the user can change the number of items he wants to buy. How can I calculate the sum of all cells when the user updates datagrid's values?
EDIT 1
My datagrid is about colors and sizes of a product. The columns are generated dynamically from this function
private function getColumn(dataField:String, headerText:String,editable:Boolean) : DataGridColumn
{
var column:DataGridColumn = new DataGridColumn(dataField);
[Code]....
the row.size28 is generated dynamically. So it could be row.size29,row.size30 etc.
How can I loop through all my cells without knowing their data.property?
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Feb 19, 2011
I want to calculate the parsing time....
package {
import flash.display.MovieClip;
import flash.net.URLLoader;
import flash.events.Event;
import flash.net.URLRequest;
public class Graph extends MovieClip {
[Code] .....
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