Bitmap line draw at 1px

[proyb2]

Let say the vertical line draw on 1px on x-axis, the line will appear grey color instead of black while line draw on 10px will appear in a sharp black color, isn't the line at 1px should appear sharp as well? What could be done without increasing line width?

bmapbox.line(1, 0, 1, 100, "0x000000", 1)bmapbox.line(20, 0, 20, 100, "0x000000", 1)bmapbox.line(30, 0, 30, 100, "0x000000", 1)bmapbox.line(40, 0, 40, 100, "0x000000", 1)

[tips4design]

Try adding 0.5 to your coordinates (line points). Also if the line is not straight, the line must not be anti-aliased in order to be 100% black.