Differences

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--- en:pixel [2016/01/01 22:41]
127.0.0.1 external edit
+++ en:pixel [2020/05/27 10:02] (current)
admin
@@ Line 1: / Line 1: @@
 ===== Pixel (Function) =====
 ==== Format ====
-**pixel** (//x_expr//, //y_expr// )
+**pixel** ([[numericexpressions|x_position]], [[numericexpressions|y_position]] )
 returns //rgb_expr//
 ==== Description ====
-Returns the [[RGB|RGB]] value of the pixel at the //x_expr// and //y_expr// coordinate. If the pixels has not been set since the last [[clg|Clg]] command or was drawn with the color CLEAR a -1 will be returned.
+Returns the [[RGB|RGB]] value of the pixel at the [[numericexpressions|x_position]] and [[numericexpressions|y_position]] coordinate. If the pixels has not been set since the last [[clg|Clg]] command or was drawn with the color CLEAR a -1 will be returned.
+==== Sample Program ====
+The following sample program shows how to use the binary and operation and integer division to extract the red, blue, and green values from the number returned by pixel.
+<code>
+color red
+rect 0,0,100,100
+color rgb(100,50,150)
+rect 100,100,100,100
+color white
+rect 200,200,100,100
+while true
+	c = pixel(mousex, mousey)
+	r = (c & 0xff0000) \ 0x10000
+	g = (c & 0xff00) \ 0x100
+	b = (c & 0xff)
+	print r,g,b
+	pause .5
+end while
+</code>
 ==== See Also ====
@@ Line 13: / Line 37: @@
 ==== History ====
 |0.9.5m|New To Version|
+|2.0.0.4|Added example|

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