Changeset 3477 for lang/legacy-actionscript

Timestamp:

12/23/07 15:27:50 (12 months ago)

Author:

gyuque

Message:

lang/legacy-actionscript/as2draw: indexed pixel buffer

Location:

lang/legacy-actionscript/as2draw

Files:

• AS2Draw.swf (modified) (previous)
• Drawable.as (modified) (1 diff)
• PixelBuffer.as (modified) (3 diffs)

lang/legacy-actionscript/as2draw/Drawable.as

@@ -48 +48 @@
         public function removeTopLayer():Void
         {
+                //mPixBuf.dumpBuffer();
                 mMStack.pop();
         }

lang/legacy-actionscript/as2draw/PixelBuffer.as

@@ -24 +24 @@
                 for (i = 0;i < 16;i++)
                 {
-                        if (0 == (w >> i)) break;
-                }
-                if (i == 0) throw "pixbuf width too big";
+                        if (0 == ((w>>2) >> i)) break;
+                }
+                if (i == 16) throw "pixbuf width too big";
 
                 mStrideShift = i;
-                mStride = 1 << i;
+                mStride = 1 << mStrideShift;
         }
         
@@ -36 +36 @@
                 mOut = aMC;
         }
-/*
+
         public function setPixel(x:Number, y:Number, k:Number)
         {
                 if (x<0 || x>=mWidth || y<0) return;
-                mBuf[ (y<<mStrideShift) + x ] = k;
-                //var i:Number = (y<<mStrideShift) + x;
-        }
-*/
+                var ADDR = (y<<mStrideShift) | (x>>2);
+                mBuf[ADDR] &= ~(0x000f << ((x&0x3) << 2));
+                mBuf[ADDR] |= k << ((x&0x3) << 2);
+        }
+
         
         public function dumpBuffer()
-        {
-                
+        {/*
+                var a:Array = [];
+                var c = 0;
+                for (var i in mBuf)
+                {
+                        c++;
+                        a.push("\"" +i+"\":"+mBuf[i]);
+                }
+                jp.javac.tools.JTracer.trace("{\"stride\": " +mStride+ ",");
+                jp.javac.tools.JTracer.trace("\"count\": " +c+ ",");
+                jp.javac.tools.JTracer.trace("\"data\": {"+a.join(",")+"}\n}");*/
         }
         
@@ -117 +127 @@
                 }
 
+                var ADDR;
                 for (var i:Number = 0;i < mCount;i++)
                 {
                         //setPixel(mSX, mSY, aData);
                         if (mSX>=0 && mSX<mWidth && mSY>=0);
-                                mBuf[ (mSY<<mStrideShift) + mSX ] = aData;
+                        {
+                                ADDR = (mSY<<mStrideShift) | (mSX>>2);
+                                mBuf[ADDR] &= ~(0x000f << ((mSX&0x3) << 2));
+                                mBuf[ADDR] |= aData << ((mSX&0x3) << 2);
+                        }
                         
                         mSX += dx;