readme: add information section

[nit.git] / lib / bitmap / bitmap.nit

diff --git a/lib/bitmap/bitmap.nit b/lib/bitmap/bitmap.nit
index 505abcf..0aceff5 100644 (file)
--- a/lib/bitmap/bitmap.nit
+++ b/lib/bitmap/bitmap.nit
@@ -199,10 +199,10 @@ class Bitmap
        # type, Int is used.
        private fun set_value(array: Array[Int], start_index: Int, value: Int)
        do
-               array[start_index] = value.bin_and(0x000000FF)
-               array[start_index + 1] = value.rshift(8).bin_and(0x000000FF)
-               array[start_index + 2] = value.rshift(16).bin_and(0x000000FF)
-               array[start_index + 3] = value.rshift(24).bin_and(0x000000FF)
+               array[start_index] = value & 0x000000FF
+               array[start_index + 1] = (value >> 8) & 0x000000FF
+               array[start_index + 2] = (value >> 16) & 0x000000FF
+               array[start_index + 3] = (value >> 24) & 0x000000FF
        end
 
        # Saves the bitmap into a file
@@ -211,11 +211,11 @@ class Bitmap
                var fw = new FileWriter.open(path)
                # Write bitmap header
                for x in [0..self.bitmap_header.length[ do
-                       fw.write(self.bitmap_header[x].ascii.to_s)
+                       fw.write(self.bitmap_header[x].code_point.to_s)
                end
                # Write dib header
                for x in [0..self.dib_header.length[ do
-                       fw.write(self.dib_header[x].ascii.to_s)
+                       fw.write(self.dib_header[x].code_point.to_s)
                end
                # Write color table (if any)
                # Write data (no padding for now)
@@ -223,12 +223,12 @@ class Bitmap
                        var row = self.data[x]
                        for y in [0..self.width[ do
                                var pixel = row[y]
-                               var red = pixel.rshift(16)
-                               var green = pixel.bin_and(0x00FF00).rshift(8)
-                               var blue = pixel.bin_and(0x000000FF)
-                               fw.write(red.ascii.to_s)
-                               fw.write(green.ascii.to_s)
-                               fw.write(blue.ascii.to_s)
+                               var red = pixel >> 16
+                               var green = (pixel & 0x00FF00) >> 8
+                               var blue = pixel & 0x000000FF
+                               fw.write(red.code_point.to_s)
+                               fw.write(green.code_point.to_s)
+                               fw.write(blue.code_point.to_s)
                        end
                end
                fw.close
@@ -241,9 +241,9 @@ class Bitmap
                        var row = self.data[x]
                        for y in [0..self.width[ do
                                var pixel = row[y]
-                               var red = pixel.rshift(16)
-                               var green = pixel.bin_and(0x00FF00).rshift(8)
-                               var blue = pixel.bin_and(0x000000FF)
+                               var red = pixel >> 16
+                               var green = (pixel & 0x00FF00) >> 8
+                               var blue = pixel & 0x000000FF
                                var lum = (0.2126 * red.to_f + 0.7152 * green.to_f + 0.0722 * blue.to_f).to_i
                                pixel = lum * 256 * 256 + lum * 256 + lum
                                self.data[x][y] = pixel