(10-07-2024, 12:44 PM)Dimster Wrote: That's a really cool effect. In Mod 2, holding down left mouse button is a riot. Is there a way to erase the left button effect in Mod 2? The mod 2 string should be an additional option to all paint program brush choices. (maybe it is with the modern paint programs, if not, it should be)

(10-07-2024, 06:43 PM)TerryRitchie Wrote: Wow! Reminds me of old Chinese writing using a brush. Really cool effect.

How do I see the code?

dim shared as integer sw, sh, mx, my, mb, mw



sw = 800

sh = 600



screen _newimage(sw, sh, 32)

img = _newimage(sw, sh, 32)

if _resize then

    sw = _resizewidth - 20

    sh = _resizeheight - 20

    screen _newimage(sw, sh, 32)

    img = _newimage(sw, sh, 32)

end if



_dest img

for y=0 to sh

for x=0 to sw

    c = 100+10*rnd

    pset (x, y), _rgb(c,c,c)

next

next

_dest 0

    

n = 14

dim x(n), y(n)



for i=0 to n-1

    x(i) = sw/2

    y(i) = i*sh/n

next



r = 14

mw = r







do

    _putimage , img



    getmouse

    r = mw



    x(0) = mx

    y(0) = my

    for i=1 to n-1

        if ((x(i - 1) - x(i))^2 + (y(i - 1) - y(i))^2) > r*r then

            a = _atan2(y(i - 1) - y(i), x(i - 1) - x(i)) - pi

            x(i) = x(i - 1) + r*cos(a)

            y(i) = y(i - 1) + r*sin(a)

        end if

    next





    'preset (x(0), y(0))

    'for i=0 to n - 1

    '    line -(x(i), y(i)), _rgb(55,55,0)

    '    circle (x(i), y(i)), 3, _rgb(255,255,0)

    'next



    preset (x(0), y(0))

    ox = x(0)

    oy = y(0)

    dt = 0.001

    for t=0 to 1 step dt

        bx = 0

        by = 0    

        

        'dx = 0

        'dy = 0

        

        for i=0 to n - 1

            bin = 1

            for j=1 to i

                bin = bin*(n - j)/j

            next

        

            p = bin*((1 - t)^(n - 1 - i))*(t^i)

            bx = bx + p*x(i)

            by = by + p*y(i)

                          

            'q = bin*((1 - t)^(n - 2 - i))*(t^(i - 1))*(i - n*t + t)

            'dx = dx + q*x(i)

            'dy = dy + q*y(i)                

        next



        if abs(bx - ox)>1 and abs(by - oy)>1 then

            line -(bx, by), _rgb(255,0,0)



            ox = bx

            oy = by

        end if

        

        'm = sqr(dx*dx + dy*dy)

        'line -step(10*dx/m, 10*dy/m), _rgb(0,255,0)

    next

    line -(bx, by), _rgb(255,0,0)

    

    

    if _mousebutton(1) then

    _dest img

    'do while mb = 1

        'getmouse        

        dt = 0.01

        for t=0 to 1 step dt

            bx = 0

            by = 0    

        

            'dx = 0

            'dy = 0

        

            for i=0 to n - 1

                bin = 1

                for j=1 to i

                    bin = bin*(n - j)/j

                next

        

                p = bin*((1 - t)^(n - 1 - i))*(t^i)

                bx = bx + p*x(i)

                by = by + p*y(i)

                          

                'q = bin*((1 - t)^(n - 2 - i))*(t^(i - 1))*(i - n*t + t)

                'dx = dx + q*x(i)

                'dy = dy + q*y(i)                

            next



            rr = 2*exp(-10*t*t)

            circle (bx, by), rr, _rgba(155,0,35,70)

        

        next

    'loop    

    _dest 0

    end if





    _display

    _limit 60

loop until _keyhit = 27

system





sub getmouse()

    do 

        mx = _mousex

        my = _mousey

        mb = _mousebutton(1)

        'mw = mw - _mousewheel

    loop while _mouseinput

end sub