ActionScript 3.0 :: Flash Runtime Ignores Alpha Values When Iterating Over Points In A Line
Apr 15, 2011
I have a large-ish array of points.
The graphics object I am using has it's alpha value set to 0.1.
When these points are plotted iteratively, and the line being drawn overlaps another line drawn earlier, there is no visible change in the colour at the intersection.
If I draw the line differently, not using an array of points, the alpha is not ignored.
ActionScript Code:
public function render(e:Event):void
{
if (segmentsCollection.length > 0)
[Code].....
This all occurs on each ENTER_FRAME event until the array is emptied.
I have tried loads of options but the alpha is always ignored.
I'm in the process of teaching myself the components of the CS4 Design Premium package using the Adobe Classroom in a Book series. I'm currently going through the Flash CIAB and i've started using the pen tool. The task involves creating a wave like design across the stage. Whilst this in itself is simple, the final instruction is to click on the first anchor point to close the shape. In the illustration, the closed shape seems to automatically extend around the stage, however when I click on the first anchor point, the line automatically connects between the two points in a straight line.
Am I doing something wrong? The next step is to fill this area, but with the straight line effect that I am getting, this becomes impossible. I should point out that the instruction states that the pen tool line should extend off the stage. I have done this, but even then on clicking on the first anchor point the shape is closed incorrectly.
I have been tasked with trying to create a drawing tool that draws dotted lines as you drag the mouse across the stage. I can easily capture the points on MouseEvent.MOUSE_MOVE and store them in a vector and then draw the points as dots:
The problem is that I need to calculate evenly distributed points on an ever growing Vector of points so I can only draw the line between say every 5th point (say using modulus). I have been battling away with Bezier curve equations both Quadratic and Cubic but still can't quite figure out how to convert my Vector of points into an evenly distributed Vector of Points without sucking the life from the CPU.
I have a TextField that uses a stylesheet and gets its text as htmlText. That text is read from an *.xml file with the neccessary CDATA tag. The htmlText is read correctly (I have a debug output to check that), and when displaying the .text attribute, it shows line breaks as expected. multiline, wordwrap and condenseWhite are enabled. No AutoSizing is done, instead I set width and height of the field manually.
But the text it actually shows on the screen is all shown in one line, with multiple lines being drawn in the same line. It also seems to interpret the html correctly, as the words with '<b></b>' around them are bold. Only the line breaks are not working. The height can't be the problem as I set it manually to a value high enough, and debug output shows that it really has that height.
This only happens when viewing the *.swf online and only with empty cache. When I press F5 in the window, the TextField works as intended. So it works offline and when it has already been loaded.
But the creation, scaling of the TextField and filling the TextField with text is all done in the same function, without any breaks so I really don't know how the cache could possibly affect this.
I have a component (link to Test class) which contain one line in it, and I put one point of this line to (0, 0).
Then drag it to Flash(fla), and get its Shape in AS3 like:
// in Test.as // assume that the movie clip only contain one line. var line:Shape = Shape(getChildAt(0));
And I can get one point of this line which is x and y of var line. But how to get another point of this line?
Edit: Ignore component stuff above, here has another question but I guess it pretty much the same as the question above:
Draw a line from (0, 0) to (10, 10) and draw another line from (10, 0) to (0, 10), how to get those lines of two-point form in AS3?
If I access them as Shape then I get two similar shapes which have same x, y, width and height values. Does AS3 has some way to access line as a REAL line not just a shape? or does it has any way I can calculate it out?
I want to create line between 2 points ...such tht the line will start when i click the point A then i will drag the line by holding it to point B and i will join the line to point B by clickin on point B (somethin like the pen tool) ..then line will then be joined between the points ...
Im wondering if it's easy enough to make a random scenario game?? My idea is you have 2 values on screen a points value and a budget value. And a textbox or field where random scenario's will be. Now depending if the scenario is good or bad, will determine whether your points and budget goes up or down.
My aim is to have 1 month's scenario's to play through but on a week by week basis, so i think they should be a button to play through each week. Ideally within a week i would possibly like 2 maybe 3 scenarios happen so within the textbox could be a summary of scenario's for that week.
And eventually at the end of month there should be a hidden points value to compare your points value with to determine whether you have been success or failure. for example hidden value = 250, and if your points value is lower than 250 then your a failure and vice verse.
This is a bit of an ask i know, but perhaps someone already has done something similar and can pass on there knowledge/code. Or give me an example.
Or if someone is willing to help by putting say an example together for me which i can tweak??
Then rather than 1 month's scenario's change it to maybe 2 weeks, then i can change it for more later.
I have a line that is drawn using the draw api. I need to find points on the line when given the x value, how would I do this. I know on the bezier segment I can just user the yForX() and get the value but not sure how to with just a straight line.
I'm using Flash 8 and AS2 I am attempting to make some code that checks whether or not a line that rotates around the screen is hitting a movie clip. Here is my code (with comments explaining it):
Closed path made with pen tool in Flash MX comprises of line segments & curved segments both.While adding anchor points on segments it is noticed that pen tool adds anchor points on curvaceous segments but not on line segments. Why is it so ? Is their any way to accomlish this task ?
find a points in a line Actually i want to make some footsteps in a sand. The footsteps are dhynamically placed on the stage. How to find the points in a dioganal. see the image
i'm trouble to find a points in a line Actually i want to make some footsteps in a sand. The footsteps are dhynamically placed on the stage. How to find the points in a dioganal.
I am trying to draw a continuous curved line in flash. There are many methods but none of the ones I have found so far quite fit my requirements. First of all, I want to use the flash graphic api's curveTo() method. I DO NOT want to simulate a curve with hundreds of calls to lineTo() per curved line segment. It is my experience and understanding that line segments are processor heavy. Flash's quadratic bezier curve should take less CPU power. [code]...
this 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); }
I think it would be cool if the line started out as flat (i.e., y=_height/2 for all points) and then the y points of the line animate into place.I don't even know where to start with doing this in TweenMax/Lite... I've seen several code snippets that draw a line from left to right, but that's not what I want.
Setup: 2 iframes (one has a php-generated list, the other my swf)
So this is what I want to do: Clicking on an item in the list has to pass info to the SWF file without reloading it. I think I heard / read that this is possible with JavaScript.
Thing is, it needs to be quick... hence the "JavaScript / no reload" approach. Otherwise I was thinking to just have the PHP-iframe reload itself when clicked and create something like a server-side cookie (a tiny text file with the choice) and have the SWF check for that file.
That would mean I could avoid using JavaScript (simply for security / compatiblity reasons) but it would be slower responding sind I wouldn't want to let the SWF check more often than once every 10 seconds or so (server load, etc).
I'm having a strange problem in computing alpha values because the results of computations differ from the results obtained making the same computations using a normal variable of "Number" type.I compute this way (incrementing alpha property and another Numer variable by 0.01 starting from 0):
var delta:Number = 0.01; var myNumber:Number = 0; myLoader.alpha = 0;
Is there someone who is good at trigonometry? I have two points punkt1 and punkt2 and a line that is drawn between them. Both points is dragable. I want the line to continue after the points in both directions and with the same steep. I have counted the steep between point1 and point2 and tried to continue to drag to a point with the same steep, but it doesnt succed.
I need to make the buttons that are associated with this code, toggle, so once you press them they become greyed out. So I was thinking of after you press a button, the alpha is reduced to 40%. Can someone help me place that piece of code into this monster? -I know it should go into the presto function of my script. Which works fine, but then it stays at 40%alpha after the user click on a different button. I need it to toggle off once someone clicks on the next button. [code]
If my holder's alpha equals 0 can its child's alpha be effectively > 0 ? In my case I have holders (custom clases) with many children, some of which are holders them selves (with their own children and holders and so on).
I would like to: -pick out a single holder from the 'tree' -have all of the 1st level children of that are NOT holders themselves have an alpha of 1.
I need to loop through all the child inside a .fla file, and I can reach only the first frame movieclips when I loop through the childs, I found a "solution" that consists in copy all the movieclips to the first frame.Is there a way to loop to every movieclip, even if those are located in, let say, frame 120 in the timeline?
I am trying to implement contour lines in ActionScript using Conrec. I have looked at both the java and javascript implementation and am still stuck.URL...Conrec will take grid data and assemble continuous contour lines. The problem is that it does not necessarily draw those lines in a continuous fashion. For example, it will draw A->B and then C->B and then C->D instead of A, B, C, D, etc.The javascript implementation seems to be accounting for this and serializing the instructions into an array of draw points. Which is what I too want to accomplish in the end. That is it takes the instructions from the core Conrec logic (eg: A->B, C->B, C->D, etc) and organizes it into an A, B, C, D series. I think it will also return the series as a multi-dimensional array to accommodate broken lines (eg: [[A, B, C, D], [E, F, G]]). This last functionality is what I need to do in Actionscript.This last part is where I am stuck. Ignore Conrec for now (I have given up on finding an Actionscript implementation), how can I organize these instructions into a collection of serial points? When Conrec gives me "draw point from X->Y" how can I first check if X or Y are already in a series and append either X or Y (whichever is not in the series) into the series? AND if neither are in the series, start a NEW series with X, Y as the starting set. Then check subsequent instructions against all existing series and connect series if they now start and stop on the same point? Also, I need to be able to allow for a series to close itself (eg: A, B, C, A) -- a loop (is that even possible?!).
I'm not sure if there is a technical term for what I want to do beyond "concatenation". I also hope someone out there has done this with Conrec and can give me some pointers.In the meantime, I am going to continue to plug away at this and see if I can come up with something but I am not confident in my abilities.If you know another way to draw contour lines from grid data, I am open to alternatives. But I have to be able to implement it in Actionscript.
i need to draw a line at runtime, and i found this "myShape.graphics.moveTo(100, 100); myShape.graphics.lineTo(200, 200);" but don't know for sure how to declare myShape, i think it needs 2 lines to declare it properly, right?
I have a dobut in assign a value to a particular location in an 3-dimensional array during runtime..for example i want to enter value in aBoxes[1][2] on runtime.
I have a Sprite covering the entire screen.Other than a certain rectangle of this sprite.I want the rest of the sprite to have alpha = 0.5. And for that particular rectangle, I want alpha = 0.
