Last night, I was able to find a demo called SpriteArranger that
showed addng different types of objects as children to a DisplayCanvas
. This really helped in understanding the AddChild. I think I'll go
with the displayobjects initially since we have a PC version written
that uses the same approach. I still am having issues with panning an
image left, right... Then the next things I need to figure out are:
1. Making an internal searchable list of children. I saw the AddChild
function, but the displayobject does not have a Children Property. I
need to research the different types of arrays and find one that I can
have a key associated with the object so as data comes in, I can
update sprite 47. Is there a HashArray or something similar. These
maybe simple questions but I am brand new to this stuff. There seems
to be tons of docs but few examples.
2. On the panning issue, lets say I have a map background that is
1000x1000. My viewport is 200X400, I need to understand how to control
the viewport and panning.
3. Memory Management. As you mentioned, tons of objects will have
issues, I need to get a feel for how many is too many, if the user
switches maps, how to delete the children...
Thanks for your help,
Rich
--- In flexcoders@yahoogroups.com, "JesterXL" <[EMAIL PROTECTED]> wrote:
>
> Base class is like DisplayObjectContainer, but that's an abstract
class;
> both Sprite and MovieClip extend that. However, if you are using Flex,
> there is no point to utilize MovieClip since you don't have frames;
Sprite's
> good. Also, the last line should be addChild(container), at least
in an AS3
> project.
>
> ...however, you have 2 choices here.
>
> DisplayObjects are nice because you can put all of your map data in one
> DisplayObject, and then move just that 1 Sprite, scale that 1
sprite, ect.
> It makes your code really concise, and flexible because you can put
anything
> you want in it. Think how Yahoo Maps and Google Maps have like
textures,
> directions, lines, markers, etc. all in theirs.
>
> ...but tons of obects, while better in Flash Player 9, are still
slower than
> 1 bitmap. If you aren't planning of going all charting-style, you
outta
> give thought to a blitting solution if you want her to scale
hardcore. You
> basically draw everything to an offscreen bitmap, and then use a
Rect to
> copyPixels into an on-screen bitmap. That way, you could add
thousands of
> objects, and you're map would run really well. Harder to code and less
> flexible, though. Sprites and the DisplayObject really nice, so.....
>
> ----- Original Message -----
> From: "richmcgillicuddy" <[EMAIL PROTECTED]>
> To: <flexcoders@yahoogroups.com>
> Sent: Tuesday, July 25, 2006 8:29 PM
> Subject: [flexcoders] Re: Image Pan - Step 1
>
>
> OK, just needed the right terms to search on. Found this in the help:
>
>
> import flash.display.Sprite;
> import flash.events.MouseEvent;
>
> var container:Sprite = new Sprite();
> container.name = "container";
>
> var circle:Sprite = new Sprite();
> circle.name = "circle";
> circle.graphics.beginFill(0xFFCC00);
> circle.graphics.drawCircle(40, 40, 40);
>
> container.addChild(circle);
>
> container.mouseChildren = false;
>
> container.addEventListener(MouseEvent.CLICK, clicked);
>
> function clicked(event:MouseEvent):void {
> trace(event.target.name); // container
> }
>
>
> Then, it states to add the container to the DisplayObject. This is
> where I get confused. What is the base container class for the
> DisplayList and how do I attach it? I don't think I need a movie clip
> becuase it says it basically is a sprite with a timeline.
>
>
> Rich
>
>
> --- In flexcoders@yahoogroups.com, "JesterXL" <jesterxl@> wrote:
> >
> > 2. If they are children, they too will scale. Add them to the
Sprite's
> > displaylist.
> >
> > 3. We've done this successfully in Flex 1.5. In Flex 2, you can set
> the
> > toolTipClass on the ToolTipManager class to utilize your own class.
> >
> > 4. To combine multiple effects at the same time, utilize the
> <mx:Parrellel>
> > tag; it'll make all effects inside it happen at the same time
(exluding
> > their own startDelay attributes).
> >
> > Have you tried replacing x & y with scrollRect?
> >
> > ----- Original Message -----
> > From: "richmcgillicuddy" <rich@>
> > To: <flexcoders@yahoogroups.com>
> > Sent: Tuesday, July 25, 2006 3:02 PM
> > Subject: [flexcoders] Image Pan - Step 1
> >
> >
> > Hello,
> >
> >
> > I am new to the group and to Flex/Flash. We have a mapping tool that
> > we had created about a year back that uses flash 8. We want to move up
> > to Flex 2 for a number of reasons. I am trying to create the mapping
> > hello world application. We use a standard png image as the background
> > for the map. I am trying to create a simple image in a panel that has
> > a series of buttons to the left where I can zoom in/out and pan in all
> > directions. The zoom in/out is working fine (although I have questions
> > regarding that) but the pan is not working. My code is attached to the
> > bottom of this email message. Logically the steps I need to go through
> > to get this to work are:
> >
> > 1. Simple map - Image management Pan Zoom.... Possibly overview window
> > similar to Google or Yahoo.
> > 2. Create an object that is a member of that map. This object needs to
> > be able to display itself as a number of different types (Images,
> > dots, characters). After reading through tutorials, I can create my
> > own object that descends from a sprite. My questions here are will the
> > dot zoom and coordinate based on the zoom, pan of the background map?
> > How can I make that happen?
> > 3. More complex tooltips than the standard tooltips. I want a tooltip
> > that displays about 5-10 lines of information and possibly links to
> > other areas of the web site. Would you just create a separate window
> > to act as a tooltip window and place whatever information in the
> > window you need?
> > 4. Incorporating effects to the movements of these objects. I've seen
> > the component explorer, I want the movement of these items on the map
> > to slide from one spot to the other. The demo app in the explorer
> > works well. How would you combine multiple effects to happen at the
> > same time?
> >
> > Any help would be greatly appreciated.
> >
> >
> > Step 1 Source Code
> >
> >
> > <?xml version="1.0" encoding="utf-8"?>
> > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";
> > layout="horizontal">
> > <mx:Script>
> > <![CDATA[
> >
> > private function panUp():void {
> > myMap.scrollRect.top -= 10;
> > trace(myMap.scrollRect);
> > if (myMap.scrollRect.top < 0) {
> > myMap.scrollRect.top = 0;
> > }
> > }
> >
> > private function panDown():void {
> > myMap.scrollRect.top += 10;
> > trace(myMap.scrollRect);
> > if (myMap.scrollRect.top < 0) {
> > myMap.scrollRect.top = 0;
> > }
> > }
> >
> > private function panRight():void {
> > myMap.scrollRect.left += 10;
> > trace(myMap.scrollRect);
> > if (myMap.scrollRect.left < 0) {
> > myMap.scrollRect.left = 0;
> > }
> > }
> >
> > private function panLeft():void {
> > myMap.scrollRect.left -= 10;
> > trace(myMap.scrollRect);
> > if (myMap.scrollRect.left < 0) {
> > myMap.scrollRect.left = 0;
> > }
> > }
> >
> > private function zoomIn():void {
> > myMap.scaleX += 0.1;
> > myMap.scaleY += 0.1;
> > }
> >
> > private function zoomOut():void {
> > myMap.scaleX -= 0.1;
> > myMap.scaleY -= 0.1;
> > }
> > ]]>
> > </mx:Script>
> > <mx:VBox height="100%">
> > <mx:Button label="Left" id="btnLeft" click="panLeft()"/>
> > <mx:Button label="Right" id="btnRight" click="panRight()"/>
> > <mx:Button label="Up" id="btnUp" click="panUp()"/>
> > <mx:Button label="Down" id="btnDown" click="panDown()"/>
> > <mx:Spacer/>
> > <mx:Button label="Zoom In" id="btnZoomIn" click="zoomIn()"/>
> > <mx:Button label="Zoom Out" id="btnZoomOut" click="zoomOut()"/>
> > </mx:VBox>
> > <mx:Panel width="100%" height="100%" layout="absolute"
> > cornerRadius="33" backgroundColor="#c0c0c0" id="myPanel" title="Map
> > Basics 101" fontFamily="Georgia" fontSize="16">
> > <mx:Image horizontalCenter="20" verticalCenter="20" width="504"
> > height="601" source="SB memorial map.png" scaleContent="false"
> > id="myMap"/>
> > </mx:Panel>
> >
> > </mx:Application>
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --
> > Flexcoders Mailing List
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> >
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>
>
>
>
>
>
>
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