When I draw a one pixel line, it splits into to two?

[TechnoCat]

lines look good to me too.

[Jasoco]

Zac. Did you ever try posting your code here so we can see how you are doing it? It would help us figure out what you're doing wrong.

[zac352]

Zac. Did you ever try posting your code here so we can see how you are doing it? It would help us figure out what you're doing wrong.

Code: Select all

if healthbar and v.alive then --dead cells don't need health bars anymore.
                local x1,y1=math.floor(v.x-8),math.floor(v.y-8)
                local x2,x3=math.floor(v.x+8),math.floor(v.x+(v.food/100)*16-8)
                love.graphics.setLineWidth(1)
                love.graphics.setLineStyle("rough")
                love.graphics.setColor(0,0,0)
                love.graphics.line(x3,y1,x2,y1)
                love.graphics.setColor(0,255,0)
                love.graphics.line(x1,y1,x3,y1)
            end

[Robin]

Could you also post a screenshot that displays the problem? Because it seems no-one else can.

[Jasoco]

Code: Select all

love.graphics.line(x3+.5,y1+.5,x2,y1)
love.graphics.line(x1+.5,y1+.5,x3,y1)

[Robin]

Code: Select all

love.graphics.line(x3+.5,y1+.5,x2,y1)
love.graphics.line(x1+.5,y1+.5,x3,y1)

Doesn't that make the lines slightly askew?

[zac352]

Code: Select all

love.graphics.line(x3+.5,y1+.5,x2,y1)
love.graphics.line(x1+.5,y1+.5,x3,y1)

Will you please get out of your alternate reality where things like that work? When I tried that, it just made two fuzzy lines, instead of two sharp ones.

[Jasoco]

Sorry. Forgot to add .5 to the other two values. If you add .5 to all of those values the line will be solid instead of split. Try it!

--REMOVED SEE BELOW!!!!

Robin, you should have caught that.

Also, Zac. That was rude. Go to your room.


Edit: Here's a much better example...

Code: Select all

love.graphics.setBackgroundColor(255,255,255)

love.graphics.setColor(0,0,0)

for i=0,9 do
    love.graphics.setLineWidth(i+1)
    love.graphics.line(20,20+(i*20), 300,20+(i*20))
end

for i=0,9 do
    love.graphics.setLineWidth(i+1)
    love.graphics.line(320,20+(i*20)+.5, 600,20+(i*20)+.5)
end

for i=0,9 do
    love.graphics.setLineWidth(i+1)
    if ((i+1)/2) ~= math.floor((i+1)/2) then  offset = .5 else offset = 0 end
    love.graphics.line(170,270+(i*20)+offset, 450,270+(i*20)+offset)
end

love.graphics.print("Without .5 offset", 20, 210)
love.graphics.print("With .5 offset", 320, 210)
love.graphics.print(".5 offset only on odd numbers", 170, 460)

The first example doesn't add .5. Even numbered thicknesses will line up solidly. The second shows the opposite. Odd numbers show up right. The third alternates the offset to only be on odd numbers but not on even ones so it gives perfect solid lines right on the pixel.

Also think of it this way. If the line is horizontal, add to the Y. If it's vertical, add to the X. Decide which is best if it's diagonal. Also, for rectangles only add to the X and Y. Not the W and H.

[zac352]

That's really odd.

[Robin]

Robin, you should have caught that.

But I did... I told you, man. It would make the lines slightly askew.

Anyway, that's odd. Some people seem to need that, others don't. What versions of LÖVE are you all running? (For me it's the most recent build of 0.7.0.)