as3 starling tile array - actionscript-3

Im trying to make a tile array system using flashDevelop and starling.
I think i complete that but i dont understand how i make bounds,intersects between the tile array and my hero.
Note that i make it using tutorials around the internet and not along.
Here are the 2 classes
public class level1 extends Sprite
{
public var map:Array = [
[1, 1, 1, 1, 1, 1],
[1, 0, 0, 0, 0],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[1, 0, 0, 0, 1],
[1, 1, 1, 1, 1],
];
//public var object:Image;
//public var data:int;
public function level1()
{
super();
this.addEventListener(starling.events.Event.ADDED_TO_STAGE, onAdd);
}
private function onAdd(event:Event):void
{
drawScreen(map, 90);
}
public function drawScreen(map:Array, cellSize:int = 90):void
{
for(var row:int = 0; row < map.length; row++)
{
for(var column:int = 0; column < map[row].length; column++)
{
var data:int = map[row][column];
// Empty tile, move onto the next item.
if(data == 0) continue;
var object:Image;
if (data == 1) object = new Image(Assets.getTexture("ESAYBTN"));
if (data == 2) object = new Image(Assets.getTexture("TITLE"));
if(object != null)
{
object.x = column * 94;
object.y = row * 29;
stage.addChild(object);
}
}
}
}
}
public class inGame extends Sprite
{
public var Hero:heroClass;
private var enem2:enemy2Class;
private var enemiesArray:Vector.<enemy2Class>;
private var posX:int;
private var posY:int;
private var hitpoints:int;
private var _level1:level1;
public function inGame()
{
super();
this.addEventListener(starling.events.Event.ADDED_TO_STAGE, onAdd);
}
private function onAdd(event:Event):void
{
this.removeEventListener(Event.ADDED_TO_STAGE, onAdd);
enemiesArray = new Vector.<enemy2Class>();
drawScreen();
}
private function drawScreen():void
{
Hero = new heroClass(50, 50, 1);
this.addChild(hero);
_level1 = new level1();
this.addChild(_level1);
createenemies(450, 50, 6);
createenemies(400, 50, 5);
createenemies(350, 50, 4);
createenemies(300, 50, 3);
createenemies(250,50, 2);
}
public function createenemies(posX:int, posY:int, hitpoints:int):void
{
var enemies:enemy2Class = new enemy2Class(posX,posY,hitpoints);
this.addChild(enemies);
enemiesArray.push(enemies);
}
public function hideInGame():void
{
this.visible = false;
}
public function showInGame():void
{
this.visible = true;
this.addEventListener(Event.ENTER_FRAME, gameLoop);
}
private function gameLoop(Event):void
{
var enemiestoloop:enemy2Class;
for (var i:uint = 0; i < enemiesArray.length; i++)
{
enemiestoloop = enemiesArray[i];
//enemiestoloop.x-=2;
if (enemiestoloop.bounds.intersects(enem.bounds))
{
enemiestoloop.x = 400;
enemiestoloop._hitpoints--;
}
if (enemiestoloop._hitpoints <= 0)
{
enemiesArray.splice(i, 1);
this.removeChild(enemiestoloop);
}
}
hero.y++;
if(hero.bounds.intersects("here goes the map???"))
{
hero.y--;
}
}
}
So how i write if the hero hit the map array object 1?

Add all the parts of the tile array to a single display object then just call intersects bounds on the single display object.

Related

How to use Matrix3D.appendTranslation()?

With stage 3d I set up a basic triangle, and I can use append rotation and append scale and everything works, but using append translation on the z axis, the triangle will dissapear with the translation being 1 or higher. With other shapes it would dissapear with only 3 or higher. And it doesn't look like the triangle is getting any smaller/farther away between 0 and 0.9 translation. The translation on the x and y axis do work though.
Here are my shader codes:
private static const VERTEX_SHADER_SOURCE:String = "m44 op, va0, vc1";
private static const FRAGMENT_SHADER_SOURCE:String = "mov oc, fc0";
my render loop:
addEventListener(Event.ENTER_FRAME, enter);
var t:Number=0;
function enter():void {
context3D.clear();
context3D.setProgram(program);
var m:Matrix3D = new Matrix3D;
m.appendTranslation(0, 0, t);
t+=0.01;
context3D.setProgramConstantsFromMatrix(Context3DProgramType.VERTEX, 1, m, true);
context3D.setVertexBufferAt(0, buffer, 0, Context3DVertexBufferFormat.FLOAT_3);
context3D.setProgramConstantsFromVector(Context3DProgramType.FRAGMENT, 0, color);
context3D.drawTriangles(indexBuffer);
context3D.present();
}
my full code:
var assembler:AGALMiniAssembler = new AGALMiniAssembler();
assembler.assemble(Context3DProgramType.VERTEX, VERTEX_SHADER_SOURCE);
if (assembler.error) {
trace("vertex shader error " +assembler.error);
return;
}
var vertexShaderByteCode:ByteArray = assembler.agalcode;
assembler.assemble(Context3DProgramType.FRAGMENT, FRAGMENT_SHADER_SOURCE);
if (assembler.error) {
trace("fragment shader error " + assembler.error);
return;
}
var fragmentShaderByteCode:ByteArray = assembler.agalcode;
var program:Program3D = context3D.createProgram();
try {
program.upload(vertexShaderByteCode, fragmentShaderByteCode);
}
catch (err:Error) {
trace("couldnt upload shader program" + err);
return;
}
color = new <Number>[0.9296875, 0.9140625, 0.84765625, 1];
var verts:Vector.<Number> = Vector.<Number>([
0.5, 0, 0,
-0.5, 0, 0,
0, 0.5, 0
]);
var buffer:VertexBuffer3D = context3D.createVertexBuffer(3, 3);
buffer.uploadFromVector(verts, 0, 3);
var indices:Vector.<uint> = Vector.<uint>([0, 1, 2])
var indexBuffer:IndexBuffer3D = context3D.createIndexBuffer(3);
indexBuffer.uploadFromVector(indices, 0, 3);
addEventListener(Event.ENTER_FRAME, enter);
var t:Number=0;
function enter():void {
context3D.clear();
context3D.setProgram(program);
var m:Matrix3D = new Matrix3D;
m.appendTranslation(0, 0, t);
t+=0.01;
context3D.setProgramConstantsFromMatrix(Context3DProgramType.VERTEX, 1, m, true);
context3D.setVertexBufferAt(0, buffer, 0, Context3DVertexBufferFormat.FLOAT_3);
context3D.setProgramConstantsFromVector(Context3DProgramType.FRAGMENT, 0, color);
context3D.drawTriangles(indexBuffer);
context3D.present();
}

Proper way to apply translation to vertices

I have the simple vertex shader:
m44 op, va0, vc0
mov v0, va1
and the fragment shader:
mov oc, v0
I pass this vertices to it:
x y z w r g b
-0.3, -0.3, 0, 1, 1, 0, 0,
0, 0.3, 0, 1, 0, 1, 0,
0.3, -0.3, 0, 1, 0, 0, 1
The result triangle looks like I expected. Now I want to apply some translation to the result triangle. I have declared a matrix, call appendTranslation(0.2, 0, 0) and pass it to the vertex shader. The problem is that the triangle remained in the same position but with different vertices position. It looks like this:
Why I got this result, and what is the proper way to apply translation to vertices?
Here is full code of my program:
package tests
{
import com.adobe.utils.AGALMiniAssembler;
import flash.display.Sprite;
import flash.display3D.Context3D;
import flash.display3D.Context3DProgramType;
import flash.display3D.Context3DRenderMode;
import flash.display3D.Context3DVertexBufferFormat;
import flash.display3D.IndexBuffer3D;
import flash.display3D.Program3D;
import flash.display3D.VertexBuffer3D;
import flash.events.Event;
import flash.geom.Matrix3D;
import flash.utils.ByteArray;
[swf(width="500", height="500")]
public class Stage3dTest extends Sprite
{
private var _context:Context3D;
private var _vertexBuffer:VertexBuffer3D;
private var _indexBuffer:IndexBuffer3D;
private var _program:Program3D;
private var _mat:Matrix3D;
public function Stage3dTest() {
if (stage) {
onAddedToStage();
} else {
addEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
}
}
private function onAddedToStage(event:Event = null):void {
this.stage.stage3Ds[0].addEventListener(Event.CONTEXT3D_CREATE, onStage3dContext3DCreate);
this.stage.stage3Ds[0].requestContext3D(Context3DRenderMode.SOFTWARE);
}
private function onStage3dContext3DCreate(event:Event):void {
_mat = new Matrix3D();
_mat.appendTranslation(0.2, 0, 0);
_context = this.stage.stage3Ds[0].context3D;
_context.configureBackBuffer(500, 500, 0, false);
_vertexBuffer = _context.createVertexBuffer(3, 7);
_indexBuffer = _context.createIndexBuffer(3);
var p:Number = 0.3;
var vertexData:Vector.<Number> = new <Number>[
-p, -p, 0, 1, 1, 0, 0,
0, p, 0, 1, 0, 1, 0,
p, -p, 0, 1, 0, 0, 1
];
_vertexBuffer.uploadFromVector(vertexData, 0, 3);
_indexBuffer.uploadFromVector(new <uint>[0, 1, 2], 0, 3);
createAndCompileProgram();
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
private function createAndCompileProgram():void {
_program = _context.createProgram();
var assembler:AGALMiniAssembler = new AGALMiniAssembler();
var code:String = "";
code += "m44 op, va0, vc0\n"+
"mov v0, va1\n";
var vertexShader:ByteArray = assembler.assemble(Context3DProgramType.VERTEX, code);
code = "mov oc, v0\n";
var fragmentShader:ByteArray = assembler.assemble(Context3DProgramType.FRAGMENT, code);
_program.upload(vertexShader, fragmentShader);
}
private function onEnterFrame(event:Event):void {
_context.clear(0.9, 0.9, 0.9, 1);
_context.setProgram(_program);
_context.setProgramConstantsFromMatrix(Context3DProgramType.VERTEX, 0, _mat);
_context.setVertexBufferAt(0, _vertexBuffer, 0, Context3DVertexBufferFormat.FLOAT_4);
_context.setVertexBufferAt(1, _vertexBuffer, 4, Context3DVertexBufferFormat.FLOAT_3);
_context.drawTriangles(_indexBuffer);
_context.present();
}
}
}
You need to transpose a matrix. You can do it manually or you can pass a parameter here:
_context.setProgramConstantsFromMatrix(Context3DProgramType.VERTEX, 0, _mat, true);

Add a movieclip but make sure it isn't in the same place as another movieclip. (as3)

So I have this where you add movieclips by clicking, but it is unefficient and doesn't have some functionality that I want, I need to only add the movieclip if no other movieclip is in the same place.
private function onClick():void
{
if(placesound==false)
{
placepixel.play();
placesound = true;
}
if(erasetrue==false)
{
var pixel = new Pixel();
pixel.x = 0;
pixel.y = 0;
}
if(mouseY>30 && irontrue==true)
{
//var pixel = new Pixel();
pixel.x=(Math.round(mouseX/5)*5)-2.5;
pixel.y=(Math.round(mouseY/5)*5)-2.5;
pixel.graphics.beginFill(0x999999);
pixel.graphics.drawRect(0, 0, 5, 5);
pixel.graphics.endFill();
pixel.type=0;
pix.push(pixel);
//addChild(pixel);
}
if(mouseY>30 && woodtrue==true)
{
//var pixel = new Pixel();
pixel.x=(Math.round(mouseX/5)*5)-2.5;
pixel.y=(Math.round(mouseY/5)*5)-2.5;
pixel.graphics.beginFill(0x996600);
pixel.graphics.drawRect(0, 0, 5, 5);
pixel.graphics.endFill();
pixel.type=3;
pix.push(pixel);
//addChild(pixel);
}
if(erasetrue==true)
{
for (i=pix.length-1; i>=0; i--)
{
if(pix[i].x==(Math.round(mouseX/5)*5)-2.5 && pix[i].y==(Math.round(mouseY/5)*5)-2.5)
{
removeChild(pix[i]);
pix.splice(i, 1);
}
}
}
if(mouseY>30 && springtrue==true)
{
//var pixel = new Pixel();
pixel.x=(Math.round(mouseX/5)*5)-2.5;
pixel.y=(Math.round(mouseY/5)*5)-2.5;
pixel.graphics.beginFill(0x000000);
pixel.graphics.drawRect(0, 0, 5, 5);
pixel.graphics.endFill();
pixel.type=1;
pix.push(pixel);
//addChild(pixel);
}
if(mouseY>30 && portaltrue==true)
{
//var pixel = new Pixel();
pixel.x=(Math.round(mouseX/5)*5)-2.5;
pixel.y=(Math.round(mouseY/5)*5)-2.5;
pixel.graphics.beginFill(0x9999FF);
pixel.graphics.drawRect(0, 0, 5, 5);
pixel.graphics.endFill();
pixel.type=2;
pix.push(pixel);
//addChild(pixel);
}
if(erasetrue==false)
{
addChild(pixel);
}
}
I want to somehow only run the last if (the one that addChilds the pixel.) only if no other movieclip (see the array "pix") has is already in the spot it would be placed in. (I round the mouse before placing it.
Thanks for any help.
Edit: Spoilers failed.
Loop through the pix array to see if any of the pixels in the array match the x and y coordinates of the new pixel object. If not, the pixel should be added.
So instead of your final if statement:
...
if(erasetrue==false){
var canPlace:Boolean = true;
for (var i:int = 0; i < pix.length; i++){
var placedPixel:Pixel = pix[i] as Pixel;
if(pixel.x == placedPixel.x && pixel.y == placedPixel.y){
canPlace = false;
}
}
if(canPlace){
addChild(pixel);
}
}

How do I create a Swirl effect in AS3?

I want to manipulate and animate some BitmapData to create a swirl effect such as the one found in the link below:
http://www.flash-filter.net/swirl-effect.phtml
What techniques could I apply?
Btw: Yes, I do know the effect is ugly..
In case you're looking for how a swirl effect is achieved, i.e. the algorithm. Here is a nice step-by-step explanation of how the image is transformed: Image- Twist and Swirl Algorithm
There is a Pixel Bender filter for this. Check out this link:
http://www.adobe.com/cfusion/exchange/index.cfm?event=extensionDetail&extid=1536021
Here is a tutorial on Tweening Pixel Bender filters
http://plasticsturgeon.com/2011/03/pixel-transition-tweening-a-pixel-bender-filter-in-as3/
You may also want to check out the AS3 ImageProcessing library
http://blog.joa-ebert.com/imageprocessing-library/
This should give you a good starting point
Pixel Bender ist krieg!
While I do agree with the previous answers, I'd like to point out, that you can do this kind of effect by using only bitmap filters that are out there for years now: DisplacementMapFilter namely. Create a displacement map that moves pixels in a circular direction and apply this map to an image multiple times. This will get you a swirling transformation.
Here's my simple implementation.
The usage is pretty straightforward (see after the class).
package org.noregret.images
{
import flash.display.BitmapData;
import flash.display.BitmapDataChannel;
import flash.display.BlendMode;
import flash.display.DisplayObject;
import flash.display.GradientType;
import flash.display.InterpolationMethod;
import flash.display.SpreadMethod;
import flash.display.Sprite;
import flash.filters.DisplacementMapFilter;
import flash.filters.DisplacementMapFilterMode;
import flash.geom.Matrix;
import flash.geom.Point;
import flash.geom.Rectangle;
/**
* #author Nox Noctis (http://noregret.org)
*/
public class Swirl
{
public var target : DisplayObject;
public var allowCache : Boolean = false;
public var levels : uint;
public var isDestroyed : Boolean;
protected var bitmapMargin : Point;
protected var filter : DisplacementMapFilter;
protected var radius : int;
protected var cache : Object;
protected var map : BitmapData;
protected var targetRect : Rectangle;
protected var mapOffset : Point;
protected var maxLevel : Number = 1;
public function Swirl(_target : DisplayObject, _filterLevels : uint = 10, _allowCache : Boolean = true)
{
target = _target;
allowCache = _allowCache;
levels = _filterLevels;
cache = {};
filter = new DisplacementMapFilter();
filter.componentX = BitmapDataChannel.RED;
filter.componentY = BitmapDataChannel.GREEN;
filter.scaleX = -20;
filter.scaleY = -20;
filter.mapPoint = new Point();
filter.mode = DisplacementMapFilterMode.IGNORE;
}
private function createDisplacementMap() : void
{
targetRect = target.getRect(target);
radius = Math.max(Math.max(targetRect.width, targetRect.height), 100) / 2;
radius = Math.sqrt(2) * radius;
mapOffset = new Point(radius - targetRect.width / 2, radius - targetRect.height / 2);
var mapSprite : Sprite = new Sprite();
var redLayer : Sprite = new Sprite();
var greenLayer : Sprite = new Sprite();
var grayLayer : Sprite = new Sprite();
mapSprite.addChild(redLayer);
mapSprite.addChild(greenLayer);
mapSprite.addChild(grayLayer);
var gradientMatrix : Matrix;
gradientMatrix = new Matrix();
gradientMatrix.createGradientBox(radius * 2, radius * 2, Math.PI / 2, -radius, -radius);
redLayer.graphics.lineStyle(0, 0, 0);
redLayer.graphics.beginGradientFill(GradientType.LINEAR, [0xFF0000, 0], [100, 100], [0, 255], gradientMatrix, SpreadMethod.PAD, InterpolationMethod.RGB);
redLayer.graphics.drawCircle(0, 0, radius);
redLayer.graphics.endFill();
greenLayer.graphics.lineStyle(0, 0, 0);
gradientMatrix.createGradientBox(radius * 2, radius * 2, 0, -radius, -radius);
greenLayer.graphics.beginGradientFill(GradientType.LINEAR, [0x00FF00, 0x00FF00], [0, 100], [10, 245], gradientMatrix, SpreadMethod.PAD, InterpolationMethod.RGB);
greenLayer.graphics.drawCircle(0, 0, radius);
greenLayer.graphics.endFill();
greenLayer.blendMode = BlendMode.ADD;
gradientMatrix = new Matrix();
gradientMatrix.createGradientBox(radius * 2, radius * 2, 0, -radius, -radius);
grayLayer.graphics.lineStyle(0, 0, 0);
grayLayer.graphics.beginGradientFill(GradientType.RADIAL, [0x808080, 0x808080], [0, 100], [0, 0xFF], gradientMatrix, SpreadMethod.PAD, InterpolationMethod.RGB);
grayLayer.graphics.drawCircle(0, 0, radius);
grayLayer.graphics.endFill();
var rect : Rectangle = mapSprite.getRect(mapSprite);
var matrix : Matrix = new Matrix();
matrix.translate(-rect.x, -rect.y);
if (map) {
map.dispose();
}
map = new BitmapData(rect.width, rect.height, false, 0xFF808080);
map.draw(mapSprite, matrix);
filter.mapBitmap = map;
}
public function swirlTo(ratio : Number) : BitmapData
{
if (isDestroyed) {
trace("Swirl: error! Tried to swirl on disposed item.");
return null;
}
if (ratio < 0) {
ratio = 0;
}
var level : uint = Math.round(levels * ratio);
var cacheName : String = getCacheName(level);
if (cache[cacheName]) {
return (cache[cacheName] as BitmapData).clone();
}
var rect : Rectangle = target.getRect(target);
if (!map || rect.width != targetRect.width || rect.height != targetRect.height) {
createDisplacementMap();
flushCache();
}
var point : Point = new Point(-targetRect.x, -targetRect.y);
bitmapMargin = new Point(point.x + mapOffset.x, point.y + mapOffset.y);
var bmp : BitmapData;
if (cache["l" + maxLevel]) {
bmp = cache["l" + maxLevel] as BitmapData;
} else {
bmp = new BitmapData(map.width, map.height, true, 0);
var matrix : Matrix = new Matrix();
matrix.translate(bitmapMargin.x, bitmapMargin.y);
bmp.draw(target, matrix, null, null, null, true);
}
if (level == 0) {
cache[cacheName] = bmp.clone();
return bmp;
}
var destPoint : Point = new Point();
for (var i : Number = maxLevel;i <= level; i++) {
bmp.applyFilter(bmp, bmp.rect, destPoint, filter);
if (allowCache) {
cache["l" + i] = bmp.clone();
}
}
maxLevel = Math.max(maxLevel, level);
return bmp;
}
private function getCacheName(level : uint) : String
{
return "l" + level;
}
public function flushCache() : void
{
for each (var bmp:BitmapData in cache) {
bmp.dispose();
}
cache = {};
}
public function destroy() : void
{
flushCache();
target = null;
map.dispose();
map = null;
isDestroyed = true;
}
}
}
Usage example:
package
{
import flash.display.Sprite;
import flash.display.Loader;
import flash.events.Event;
import flash.net.URLRequest;
import flash.system.LoaderContext;
import flash.display.Bitmap;
import org.noregret.images.Swirl;
[SWF(width="800",height="600",backgroundColor="#FFFFFF",fps="30")]
public class TestSwirl extends Sprite
{
private const loader:Loader = new Loader();
private const swirlBitmap:Bitmap = new Bitmap();
private var swirl:Swirl;
private var time:Number = 0;
public function TestSwirl()
{
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onLoadComplete);
var request:URLRequest = new URLRequest("http://i.stack.imgur.com/Vtsvm.gif");
loader.load(request, new LoaderContext(true));
}
protected function onLoadComplete(event:Event):void
{
var original:Bitmap = loader.content as Bitmap;
addChild(original);
swirlBitmap.bitmapData = original.bitmapData.clone();
swirlBitmap.x = original.x + original.width + 10;
addChild(swirlBitmap);
swirl = new Swirl(original,80);
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
protected function onEnterFrame(event:Event):void
{
var ratio:Number = Math.abs(Math.sin(time));
// ***
swirlBitmap.bitmapData = swirl.swirlTo(ratio);
// ***
time += .02;
}
}
}
I would suggest using Pixel Bender to create your own bitmap filters.

Actionscript color picker

I am trying to create a Colorpicker control for my application. I prefer pure actionscript. Does someone know how to create a picker like this: http://parasolarchives.com/tools/colorpicker/
Most interestingly I am interested how to draw the gradient because the gradient has a saturation,
this is a picker i use myself, hope it'll be useful:
package lazylib.ui.generated
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.display.GradientType;
import flash.events.MouseEvent;
import flash.geom.ColorTransform;
import flash.geom.Matrix;
import lazylib.broadcast.evts.ColorEvent;
import lazylib.broadcast.Radio;
/**
* ...
* #author www0z0k
*/
public class Picker extends Sprite
{
private var bmpc: Bitmap;
private var bmp:BitmapData;
private var id:String;
private var w:int;
private var h:int;
public static const COLOR_PICKED_EVT_TYPE: String = 'picked by picker';
public function Picker(_id:String, _w:int = 256, _h:int = 256, _x:int = 0, _y:int = 0)
{
id = _id;
w = _w;
h = _h;
x = _x;
y = _y;
bmp = new BitmapData(w, h);
bmpc = new Bitmap(bmp);
addChild(bmpc);
refillBmp(0x7f7f7f);
}
public function get ID():String { return id; }
private function refillBmp(overColor:int = 0x7f7f7f, alphaStep:Number = 0.006):void {
var rtspr:Sprite = new Sprite();
var spr:Sprite = new Sprite();
var colors:Array = new Array(0xff0000,0xff7f00,0xffff00,0x7fff00,0x00ff00, 0x00ff7f, 0x00ffff,0x007fff,0x0000ff, 0x7f00ff,0xff00ff, 0xff007f, 0xff0000);
var alphas: Array = new Array(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1);
var ratios: Array = new Array(10, 30, 50, 70, 90, 110, 130, 150, 170, 190, 210, 230, 250);
var matrix:Matrix = new Matrix();
matrix.createGradientBox(w, h);
spr.graphics.beginGradientFill(GradientType.LINEAR, colors, alphas, ratios, matrix);
spr.graphics.drawRect(0, 0, w, h);
spr.graphics.endFill();
rtspr.addChild(spr);
var spr2:Sprite = new Sprite();
rtspr.addChild(spr2);
var startA: Number = 1;
for (var i:int = 0; startA > 0; i++) {
startA -= alphaStep;//orig 0.004!!!
spr2.graphics.lineStyle(1, overColor, startA);
spr2.graphics.moveTo(0, h - i);
spr2.graphics.lineTo(w, h - i);
}
bmp.draw(rtspr, new Matrix());
graphics.beginFill(0, 0);
graphics.drawRect(0, 0, w, h);
graphics.endFill();
buttonMode = true;
addEventListener(MouseEvent.CLICK, onClick);
}
public function adjustDarkness(percent:int):void {
var colorValue: int = int(255 * percent / 100);
var currentGray:int = colorValue + colorValue << 8 + colorValue << 16;
refillBmp(colorValue);
}
private function onClick(e:MouseEvent):void {
var col: int = bmp.getPixel(e.localX, e.localY);
Radio.broadcast(new ColorEvent(COLOR_PICKED_EVT_TYPE + id, col));
dispatchEvent(new ColorEvent(COLOR_PICKED_EVT_TYPE + id, col));
}
}
}
Radio is a global dispatcher class (posted here if you need it), ColorEvent is just an event with an int color field, adjustDarkness is usually called from an external scrollbar. Let me know if a working example is needed.
I'm not sure this would be too accurate, but I think I can give you a few ideas:
You could grab that same squared image you are showing (or photoshop's for that matter) and change it's hue to get the whole color range.
If you want to draw it, mathematically I don't think it's too hard to do... for the cyan, for instance, the Y axis should control the maximum amount of color in all channels, and the X axis should control the proportion of red in the mix.