Screen Savers

[Kernelpanic]

It appears to be doing shapely curves. Can anyone, duplicate or even better that!?

Duplicate? The Windows Original has round curves, and is kind of "softer".

[RhoSigma]

It appears to be doing shapely curves. Can anyone, duplicate or even better that!?

Duplicate? The Windows Original has round curves, and is kind of "softer".

Not necessarily better ot softer, but similar, have a look on the Splines screensaver here:
https://staging.qb64phoenix.com/showthread.php?tid=91

[bplus]

Oh yeah, Splines has curves instead of straight lines, that's pretty close @RhoSigma.

Been awhile since I looked at that set of Savers, "ScreenBlankers", today at first I thought something was broken in new .0.8.2 version, I had forgotten if you move mouse, the blanker ends. I do like your Worms and KaliescopeMill.

[Kernelpanic]

I think I have the right "screensaver" for Saturday night here (The deadly nightshade is ironic!). 

Screenshot, that really was a "Nightmare".

[RhoSigma]

Oh yeah, Splines has curves instead of straight lines, that's pretty close @RhoSigma.

Been awhile since I looked at that set of Savers, "ScreenBlankers", today at first I thought something was broken in new .0.8.2 version, I had forgotten if you move mouse, the blanker ends. I do like your Worms and KaliescopeMill.

Oh yeah, mouse moves or keypress, or any input in general. Some day I've to go in and implement a more random path for the Kaleidoscope(Mill) savers, so that they not run over themself after a while.

Worms was inspired by the After Dark saver module "Can of Worms". There are pretty many cool modules in there, maybe you, known for your exciting graphics demos, find some interesting ideas to pick up there.

[bplus]

Ha! I have to give Rho a Thumbs up for being first to reply to challenge, specially since I just shared it with Ken in Challenge thread ;-))

Plus I enjoyed some You Tube After Dark video's thanks to Rho's promptings, then I watched After Dark's Twisted, then I had enough
I am kind of amazed how much my code adventures duplicate or run parallel to these ditty's.

I hadn't seen Starry Night though, the closest was a black and white Helicopter thing at night from QB64.net I think.

[SierraKen]

Here is my version. It only stays as a triangle but I think it's cool. 

Code: (Select All)

_Title "Floating Triangle - by Sierraken"
Screen _NewImage(800, 800, 32)
dirrr = .1
dirx = -1
diry = 1
cenx = 400
ceny = 400
length1 = Rnd * 50
length2 = Rnd * 50
length3 = Rnd * 50

Do
    _Limit 15
    If cenx > 600 Then dirx = -1 * Rnd * 3
    If cenx < 200 Then dirx = 1 * Rnd * 3
    If ceny > 600 Then diry = -1 * Rnd * 3
    If ceny < 200 Then diry = 1 * Rnd * 3
    t = t + .1
    If t = 2 Then
        dirr = Int(Rnd * 4) + 1
        If dirr = 1 Then dirx = -1 * Rnd * 3
        If dirr = 2 Then dirx = 1 * Rnd * 3
        If dirr = 3 Then diry = -1 * Rnd * 3
        If dirr = 4 Then diry = 1 * Rnd * 3
        length1 = Rnd * 50
        length2 = Rnd * 50
        length3 = Rnd * 50
    End If
    If t = 6 Then
        dirr2 = Int(Rnd * 2)
        If dirr2 = 1 Then dirrr = -.1
        If dirr2 = 2 Then dirrr = .1
        length1 = Rnd * 50
        length2 = Rnd * 50
        length3 = Rnd * 50
    End If
    cenx = cenx + dirx
    ceny = ceny + diry
    seconds = seconds + dirrr
    s = (60 - seconds) * 6 + 180
    x = Int(Sin(s / 180 * 3.141592) * 125) + cenx
    y = Int(Cos(s / 180 * 3.141592) * 125) + ceny
    m = 180 - seconds * 6
    xx = Int(Sin(m / 180 * 3.141592) * 120) + x
    yy = Int(Cos(m / 180 * 3.141592) * 120) + y
    c1 = c1 + 1
    c2 = c2 + 1
    c3 = c3 + 1
    If c1 > 255 Then
        c1 = Rnd * 255
        c2 = Rnd * 255
        c3 = Rnd * 255
    End If
    For b = -5 To 5 Step .1
        Line (x + b + length3, y + b + length3)-(xx + b + length1, yy + b + length1), _RGB32(c1, c2, c3)
    Next b
    h = 360 - seconds * 30 + 180
    xxx = Int(Sin(h / 180 * 3.141592) * 100) + xx
    yyy = Int(Cos(h / 180 * 3.141592) * 100) + yy
    For b = -5 To 5 Step .1
        Line (xx + b + length1, yy + b + length1)-(xxx + b + length2, yyy + b + length2), _RGB32(c1, c2, c3)
    Next b
    For b = -5 To 5 Step .1
        Line (xxx + b + length2, yyy + b + length2)-(x + b + length3, y + b + length3), _RGB32(c1, c2, c3)
    Next b
    If t > 12 Then
        t = 0
    End If
    _Display
    Line (0, 0)-(800, 800), _RGB32(0, 0, 0, 30), BF
Loop Until InKey$ = Chr$(27)

[bplus]

Yeah that's sort of spirit of Mystify. Thick lined triangles, not sure how I would do that with lines

[bplus]

Trivial 2D Explosions

That was Stx's tiltle from which I made a fun mod. Trivial is wrong! Fun is not Trivial it is vital.

So here is better title for my mod anyway:

Fun Fake 3D Explosions!

Code: (Select All)

_Title "trivial 2D explosions B+ mod 2" 'STxAxTIC mod B+ 2019-02-03
' 2019-02-03 use a bg& for background instead of redraws each loop, that should cool down CPU
'  rounder rocks, more fiddle with numbers

Const xmax = 1200
Const ymax = 700
Screen _NewImage(xmax, ymax, 32)
'_ScreenMove 100, 20
_FullScreen
Randomize Timer

np = 500 'number of particles
Dim x(np), y(np), xold(np), yold(np), v0x(np), v0y(np), col(np) As _Unsigned Long

nr = 3500 'number of rocks
Dim rx(nr), ry(nr), rw(nr), rh(nr), rc(nr) As _Unsigned Long
For i = 0 To nr \ 2
    rx(i) = Rnd * xmax
    ry(i) = .5 * ymax + Rnd * .25 * ymax + rx(i) * .09
    rw(i) = ry(i) * ry(i) * .00015
    rh(i) = .3 * rw(i)
    r = 200 * Rnd
    rc(i) = _RGB32(r, .45 * r, .2 * r)
Next
For i = nr \ 2 + 1 To nr
    rx(i) = Rnd * xmax
    ry(i) = .5 * ymax + Rnd * .75 * ymax + rx(i) * .09
    rw(i) = ry(i) * ry(i) * .00015
    rh(i) = .3 * rw(i)
    r = 200 * Rnd
    rc(i) = _RGB32(r, .45 * r, .2 * r)
Next

no = 80 'number of rock bounce reflectors
Dim ox(no), oy(no), ow(no), oh(no)
For i = 0 To no
    ox(i) = Rnd * xmax
    oy(i) = .5 * ymax + Rnd * .75 * ymax + ox(i) * .09
    ow(i) = oy(i) * oy(i) * .00015
    oh(i) = .3 * ow(i)
Next


Dim wallcol As _Unsigned Long
wallcol = _RGB32(200, 100, 50)
g = 95
xdamp = .07
ydamp = .07
exploderadius = 10

'draw background
bgrd& = _NewImage(xmax, ymax, 32)
_Dest bgrd&
'sky
For y = 0 To ymax
    Line (0, y)-(xmax, y), _RGB32(.1 * y, .1 * y, .15 * y), BF
Next
'rocks
For i = 0 To nr
    EllipseFill rx(i), ry(i), rw(i), rh(i), rc(i)
    'LINE (rx(i), ry(i))-STEP(rw(i), rh(i)), rc(i), BF
Next i

'Draw obstacles randomly
For i = o To no
    EllipseFill ox(i), oy(i), ow(i), oh(i), wallcol
    'LINE (ox(i), oy(i))-STEP(ow(i), oh(i)), wallcol, BF
Next i

_Dest 0

start:
iterations = 0
'Toggle for random starting position.
xshift = Rnd * xmax
yshift = Rnd * ymax * .6


For i = 1 To np
    speed = Rnd * 150 + 1
    ang1 = Rnd * 2 * 3.141592653589793#
    ang2 = Rnd * 2 * 3.141592653589793#
    x(i) = xshift + Rnd * exploderadius * Cos(ang1)
    y(i) = yshift + Rnd * exploderadius * Sin(ang1)
    v0x(i) = speed * Cos(ang2)
    v0y(i) = speed * Sin(ang2)
    dotcol:
    col(i) = _RGB32(Rnd * 255, Rnd * 255, Rnd * 255)
    If col(i) = bgcol Or col(i) = wallcol Then GoTo dotcol
    If Point(x(i), y(i)) = wallcol Or x(i) < 0 Or x(i) > xmax Or y(i) < 0 Or y(i) > ymax Then i = i - 1
    dv = Sqr((v0x(i)) ^ 2 + (v0y(i)) ^ 2)
    If dv > vmax Then vmax = dv
Next
dt = .995 / vmax

Do
    _PutImage , bgrd&, 0
    iterations = iterations + 1
    smax = 0
    For i = 1 To np
        xold(i) = x(i)
        yold(i) = y(i)
        v0x(i) = v0x(i) + .1 * dt
        v0y(i) = v0y(i) + g * dt + .2 'more gravity
        xtmp = x(i) + v0x(i) * dt
        ytmp = y(i) + v0y(i) * dt
        If Point(xtmp, yold(i)) = wallcol Then v0x(i) = v0x(i) * -1 * xdamp
        If Point(xold(i), ytmp) = wallcol Then v0y(i) = v0y(i) * -1 * ydamp
        x(i) = x(i) + v0x(i) * dt
        y(i) = y(i) + v0y(i) * dt
        EllipseFill x(i), y(i), 3, 3, col(i)
        ds = Sqr((y(i) - yold(i)) ^ 2 + (x(i) - xold(i)) ^ 2)
        If ds > smax Then smax = ds
    Next
    If smax > .95 Then dt = dt * (1 - .01)
    If smax < .9 Then dt = dt * (1 + .01)
    _Display
    _Limit 200
    If iterations > 1500 Then GoTo start
Loop Until InKey$ <> ""

' with Steve's EllipseFill, who needs CircleFill?
Sub EllipseFill (cx As Integer, cy As Integer, rx As Integer, ry As Integer, c As _Unsigned Long)
    Dim a As Long, b As Long
    Dim x As Long, y As Long
    Dim xx As Long, yy As Long
    Dim sx As Long, sy As Long
    Dim e As Long

    a = 2 * rx * rx
    b = 2 * ry * ry
    x = rx
    xx = ry * ry * (1 - rx - rx)
    yy = rx * rx
    sx = b * rx

    Do While sx >= sy
        Line (cx - x, cy - y)-(cx + x, cy - y), c, BF
        If y <> 0 Then Line (cx - x, cy + y)-(cx + x, cy + y), c, BF

        y = y + 1
        sy = sy + a
        e = e + yy
        yy = yy + a

        If (e + e + xx) > 0 Then
            x = x - 1
            sx = sx - b
            e = e + xx
            xx = xx + b
        End If
    Loop

    x = 0
    y = ry
    xx = rx * ry
    yy = rx * rx * (1 - ry - ry)
    e = 0
    sx = 0
    sy = a * ry

    Do While sx <= sy
        Line (cx - x, cy - y)-(cx + x, cy - y), c, BF
        Line (cx - x, cy + y)-(cx + x, cy + y), c, BF

        Do
            x = x + 1
            sx = sx + b
            e = e + xx
            xx = xx + b
        Loop Until (e + e + yy) > 0

        y = y - 1
        sy = sy - a
        e = e + yy
        yy = yy + a

    Loop

End Sub

STx's code is almost interesting too:

Code: (Select All)

'#lang "qb"              ' freebasic edit 2011-06
delayconst = 900000 ' freebasic edit 2011-06
'CLEAR                  ' freebasic edit 2011-06

CLS
SCREEN 12
RANDOMIZE TIMER

LOCATE 1, 2: INPUT "Enter number of particles (default is 80): ", num
IF num = 0 THEN num = 80
DIM x(num), y(num), xold(num), yold(num), v0x(num), v0y(num), col(num)

start:
CLS
iterations = 0
'g = RND * 10 + 20
g = RND * 15 + 25
xdamp = RND * .15 + .55
ydamp = RND * .15 + .55
exploderadius = 200 '75
numobstacles = 0
iterationmax = 1200

choosecol:
bgcol = INT(RND * 14)
wallcol = 0 'INT(RND * 14)'change to zero for spider mode
IF bgcol = wallcol THEN GOTO choosecol

LINE (1, 1)-(639, 479), bgcol, BF
LINE (1, 1)-(639, 479), wallcol, B

'Draw obstacles randomly.
FOR i = 1 TO numobstacles
    LINE (RND * 640, RND * 480)-(RND * 640, RND * 480), wallcol, B
NEXT i

'Make predetermined obstacles.
'LINE (50, 75)-(600, 125), wallcol, B

'Toggle for random starting position.
xshift = RND * 640
yshift = RND * 480
'Toggle for fixed starting position
'xshift = 100
'yshift = 100

FOR i = 1 TO num
    speed = RND * 90
    ang1 = RND * 2 * 3.141592653589793#
    ang2 = RND * 2 * 3.141592653589793#
    x(i) = xshift + RND * exploderadius * COS(ang1)
    y(i) = yshift + RND * exploderadius * SIN(ang1)
    v0x(i) = 1.5 * speed * COS(ang2)
    v0y(i) = speed * SIN(ang2)
    dotcol:
    col(i) = INT(RND * 13 + 1)
    IF col(i) = bgcol OR col(i) = wallcol THEN GOTO dotcol
    IF POINT(x(i), y(i)) = wallcol OR x(i) < 1 OR x(i) > 639 OR y(i) < 1 OR y(i) > 479 THEN i = i - 1
    dv = SQR((v0x(i)) ^ 2 + (v0y(i)) ^ 2)
    IF dv > vmax THEN vmax = dv
    PSET (x(i), y(i)), col(i)
NEXT

dt = .995 / vmax
'PRINT dt

SLEEP 1

DO
    idel = 0: DO: idel = idel + 1: LOOP UNTIL idel > delayconst ' freebasic edit 2011-06

    iterations = iterations + 1
    smax = 0
    FOR i = 1 TO num
        xold(i) = x(i)
        yold(i) = y(i)
        v0x(i) = v0x(i) + 0 * dt
        v0y(i) = v0y(i) + g * dt
        xtmp = x(i) + v0x(i) * dt
        ytmp = y(i) + v0y(i) * dt
        IF POINT(xtmp, yold(i)) = wallcol THEN v0x(i) = v0x(i) * -1 * xdamp
        IF POINT(xold(i), ytmp) = wallcol THEN v0y(i) = v0y(i) * -1 * ydamp
        x(i) = x(i) + v0x(i) * dt
        y(i) = y(i) + v0y(i) * dt
        'Recolor stagnant particles.
        xx = x(i) - xold(i)
        yy = y(i) - yold(i)
        IF SQR(xx ^ 2 + yy ^ 2) < .05 THEN col(i) = bgcol
        PSET (xold(i), yold(i)), 0 'bgcol
        PSET (x(i), y(i)), col(i)
        ds = SQR((y(i) - yold(i)) ^ 2 + (x(i) - xold(i)) ^ 2)
        IF ds > smax THEN smax = ds
    NEXT
    IF smax > .95 THEN dt = dt * (1 - .01)
    IF smax < .9 THEN dt = dt * (1 + .01)
    IF iterations > iterationmax THEN
        SLEEP 2
        GOTO start
    END IF
    LINE (19, 459)-(151, 471), wallcol, B
    LINE (20, 460)-(20 + 130 * (iterations / iterationmax), 470), 15, BF
LOOP UNTIL INKEY$ <> ""
END

How the heck did I get from his post to mine? They look so different!

[SierraKen]

Way cool B+ and Stx! Stx did the framework and you finished the job.