ActionScript 2.0 Language Reference |
|
|
|
| ActionScript classes > BitmapData (flash.display.BitmapData) > setPixel32 (BitmapData.setPixel32 method) | |||
Sets the color and alpha transparency values of a single pixel of a BitmapData object. This method is similar to the setPixel() method; the main difference is that the setPixel32() method takes an ARGB color value that contains alpha channel information.
Availability: ActionScript 1.0; Flash Player 8
x:Number - The x position of the pixel whose value changes.
y:Number - The y position of the pixel whose value changes.
color:Number - The ARGB color to which to set the pixel. If you created an opaque (not a transparent) bitmap, the alpha transparency portion of this color value is ignored.
The following example uses the setPixel32() method to assign an ARGB value to a pixel at a specific x and y position. You can draw on the created bitmap in 0x000000 without an alpha value by pressing you mouse button and dragging.
import flash.display.BitmapData;
var myBitmapData:BitmapData = new BitmapData(100, 80, true, 0xFFCCCCCC);
var mc:MovieClip = this.createEmptyMovieClip("mc", this.getNextHighestDepth());
mc.attachBitmap(myBitmapData, this.getNextHighestDepth());
mc.onPress = function() {
this.onEnterFrame = sketch;
}
mc.onRelease = function() {
delete this.onEnterFrame;
}
function sketch() {
myBitmapData.setPixel32(_xmouse, _ymouse, 0x00000000);
}
getPixel32 (BitmapData.getPixel32 method), setPixel (BitmapData.setPixel method)
|
|
|
|