ActionScript 3.0 :: Check If Point Is Within A Rectangle?
Mar 16, 2010
I'm trying to create a drag-to-select feature. Basically, I'll have several dynamically created mc's and want to be able to click and drag to select several of them at once.I have it so I can drag to draw a square and I have the x/y coords of my mc's. My question is, how do I tell if the x/y coord of the mc is found within the area of the square?
i need to check if a point is within a rotated rectangle. I have to do this mathematically, as none of the objects are on the stage so i can't use hitTestPoint. I know the position and rotation of the rectangle, and if necessary can get the four corners as points as well.
I kind of feel silly asking this, because i am pretty sure it's not a hard thing to do, i just can't work it out and so far any google searches just bring up hitTestPoint.
I have two rectangles: var rect1:Rectangle = new Rectangle(66,147,89,67);
var rect2:Rectangle = new Rectangle(155,147,89,67);
How to calculate the centre point of these rectangles based on their x and y positions. I want the centre point to be calculated with relative to stage
I have a rectangle of any arbitrary width and height. I know X,Y, width, and height. How do I solve the upper right hand coordinates when the rectangle is rotated N degrees? I realized if it were axis aligned I would simply solve for (x,y+width). Unforunatly this doesn't hold true when I apply a transform matrix on the rectangle to rotate it around its center.
I have the following code to create a Sprite with a rectangle in it:
container = new Sprite(); container.graphics.beginFill(0x00CCFF, .5); container.graphics.lineStyle(1, 0x00CCFF);[code].......
The only thing is, I'd like the registration point to be in the middle (not the top left corner). Is there a way to set up the registration point in the middle of the rectangle, but still have the position of the rectangle be correct?
i.e. not moved over so that the top left corner of the rectangle is in the "middle" of where I want the rectangle to be...
I want to make an editor like this site. [URL] If you browse this link you will find "Button. If you press this button you will navigate to a editor to design your layout. After draw a rectangle or circle or line you can resize that or can rotate that. When you finish if press the "you will back to the previous page where your desinged layout display. If you press the "" again then you will navigate the editor with the previously designed layout. I want to make a site like this. I want to use the flash cs4 to make the editor. Anybody knows how to draw a rectangle or circle shape with mouse and how to scale by setting the point and how to rotate by setting the rotation point also by using flash cs4 and as3?.
Given a MovieClip containing a vectorshape (loaded from the library) - is there a way to check whether a line (from point(x1,y2) to point(x2,y2) intersects this shape?
For those of you still with me, I am tasked with making some scrollable content in Flash. Load in a TextFile using LoadURL(), then display it. To get the text, we've written our own class TextFieldExtended, which is basically just there to give the textfile location to the constructor and then have the class do the various steps of getting it and loading it for you.So I needed to get a Scrollbar, which I got hereThe thing is, it works with Sprites.After trying to get it to accept TextFieldExtended, I bumped into a block, since the scrollbar relied heavily on a Sprite property that TextFieldExtended didn't have or could have.
So I tried adding the TextFieldExtended instance to a Sprite instance using addchild.A problem occurs here that I do not know how to handle. It seems that a Rectangle is drawn and the Text is drawn on that. I say this because the scrollbar moves the Rectangle up and down a bit, but the text doesn't scroll, just the Rectangle it is positioned in and the text then moves along with it.My question: can this be fixed, or is does this implementation of scrollbars need a lot of adaptations before this is possible?
I draw a rectangle i should see a little bold circle to indicate a perfect rectangle, I seemed to lost mine, can somebody please tell me how to get it back!
I am trying to convert a rectangle(actually multiple rectangles) to a curved rectangle. I think it should be pretty easy but I guess i am stupid. Basically I would have a start position and stop position (many of these), and they would be converted to curved rectangles and follow in a cicrle around.
I would like to create a rectangle inside of a rectangle, starting approximately 15% inward from the right side of the other rectangle.
I know how to create rectangles with:
Code: var newHotRect:MovieClip = new MovieClip(); newHotRect.graphics.beginFill(0x00FF00); newHotRect.graphics.drawRect(0, 0, 100, 100); addChild(newHotRect);
But how would I make another rectangle on top of that (the black one pictured) that is approximately 15% from the right?
I toyed around with .right, and .bottomright with no success. Can anyone lead me in the right direction? or even finding the x and y of the upper right or bottom right side of a rectangle?
how to respond when a rectangle hits another rectangle? I already know how to detect the collision, I just don't know how to respond to it. I'm just trying making a simple side-scrolling platform game where I have platforms I can walk on and bump against on all sides. I have searched everywhere and just can't find the tutorials I'm looking for.
It's been a long time since I've done any work with actionscript, and alas I've forgotten nearly everything. I've tried to look for a tutorial that would explain basic animation with actionscript, but the one that I found on Kirupa was no longer there.
Basically I'd like to do this:On the stage I have a movieclip and I'd like the movieclip to move along the x-axis to a certain point and then back to the starting point again. The moving speed of the movieclip should also be adjustable.
I'm creating a game in flash for a university project, and learning actionscript and programming as I go. I'm very much still at a beginner level - at the moment al I have is some actionscript for drawing rectangles and moving them about the screen. This is what I'm having trouble with at the moment: I have a class called 'Creature', and I want instances of it to interact with each other. I want them to do something when they come within a certain distance of another instance. And I want them to be able to pick a random other instance to get the location of, in order to do something with that information.
What I think I need is: A function for telling the distance between two (x,y) points. A way of referencing the nearest other instance of the class. And a way of randomly selecting from all of the instances of the class.
How to convert 3d point to 2d point? I've found next formula in Internet(camera is situated in origin)
[Code]....
But these formulae give me strange result when z are less than zero(z<0) I need build line from A(100,100,100) to B (100,100;-100) As you can see these equations give really strange result when I try to convert B point in 2D dimension
I have a point which is setted at the border on a component, with changed transform point to the center of a component in order to match the component rotation.
the important part is when i try to get the point XY after rotation - they remains the same as before rotation.
how to get XY, after rotation ( changeing point.rotation property to specific degrees of rotaion )
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.
my preloader bar isn't growing smoothly. it appears to jump from point to point -- and i want to make it smooth. you can see the example here at: [URL] would anyone mind taking a quick look at the file i've attached,
Hi I am trying to create an image scroller that just scrolls images from point a to point b on load horizontally in an infinite loop. I just used a code snippet to move it horizontally but don't how to get it to stop and at point b and loop again from a.
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?
I am trying to develop a Quadratic Bezier Curve using the graphics.curveTo() method. Initially when i drag mouse to draw the shape, i use start point and end point of mouse to draw the curve line. I assume control point at any position below or up to the line. An draw the curve using this control point. some what like:-
[Code]...
Now i add a tip on this curve segment. I have x and y position of tip. I want to change the curve segment by dragging tip. but now i don't have the exact control point according to tip position. If i use tip coordinate as control point it reduce the height of curve and now tip does not lie on the curve segment. What i have to do is calculate the exact control point on the basis of tip coordinate. But i failed to get this point.
how to use these in order to make an object move from point A to point B in an arc.Think of that classic game where you have to input the angle and power and try to hit your opponent.
I'm trying to figure out how to find a point relative to the center of an object, modified by its rotation. For example, in the attached swf, I've been messing around trying to draw trails to a bitmap, coming out of the thrusters. I didn't have a problem at first, but as the ship rotated, the lines that were being drawn wouldn't remain relative.
http:[url]....
I'm sure this is because I have no idea what I'm doing, and I've just been sort of idioting my way through it. That aside, is there an easy way to find the point I'm looking for? For instance, say I want a point at Y -14 of my ship, but I want that to remain relative to the ship as it rotates.
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?
See [URL] Now there is a button called Answera, which when clicked should have a symbol (movie clip) called Check appear at the cordinated specified. Check exists in the libary (but does not have an instance name) and no where else on the stage. when I run this code I get: 1180: Call to a possibly undefined method Check. -> var rightCheck = new Check(); How is it undefinded if it exists in the libary?