How create a line between touch 1 and touch 2?

Apselon

Can't find answer nowhere

dave1707

@Apselon Try this.

function setup()
    x1,y1=0,0
    x2,y2=0,0
end

function draw()
    background(40, 40, 50)
    stroke(255)
    strokeWidth(2)
    if x1+y1>0 and x2+y2>0 then
        line(x1,y1,x2,y2)
    end
    fill(255)
    if x1+y1>0 then
        ellipse(x1,y1,10)
    end
    if x2+y2>0 then
        ellipse(x2,y2,10)
    end
end

function touched(t)
    if t.state==BEGAN then
        if x1+y1==0 then
            x1=t.x
            y1=t.y
        elseif x2+y2==0 then
            x2=t.x
            y2=t.y
        else
            x1=t.x
            y1=t.y
            x2,y2=0,0
        end
    end    
end

Apselon

@dave1707
Thank you

dave1707

@Apselon Here's a stripped down version that uses Boolean variables.

function setup()
    first=true
end

function draw()
    background(40, 40, 50)
    stroke(255)
    strokeWidth(2)
    if show then
        line(x1,y1,x2,y2)
    end
end

function touched(t)
    if t.state==BEGAN then
        if first then
            x1,y1=t.x,t.y
            first,show=false,false
        else
            x2,y2=t.x,t.y
            first,show=true,true
        end
    end   
end