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Vince's Corner Takeout
#17
Chaotic Scattering

demo of the Gaspard-Rice system:  https://en.wikipedia.org/wiki/Chaotic_scattering

left click to reposition laser
mouse wheel to change radius of reflectors

Code: (Select All)
deflng a-z

sw = 800
sh = 600

dim shared pi as double
pi = 4*atn(1)

dim as double t, a, b, a1, a2
dim as double x, y, x0, y0, x1, y1, dx, dy

r = 150
rr0 = 110

sx = 0
sy = sh/2

screen _newimage(sw, sh, 32)

do
        do while _mouseinput
                mw = mw + _mousewheel
        loop

        mx = _mousex
        my = _mousey
        mb = _mousebutton(1)

        rr = rr0 - mw

        if mb then
                do while mb
                        do while _mouseinput
                        loop
                        mb = _mousebutton(1)
                loop

                valid = -1
                for b = 0 to 2*pi step 2*pi/3
                        x1 = r*cos(b) + sw/2
                        y1 = r*sin(b) + sh/2

                        dx = mx - x1
                        dy = my - y1
                        if dx*dx + dy*dy < rr*rr then
                                valid = 0
                                exit for
                        end if
                next

                if valid then
                        sx = mx
                        sy = my
                end if
        end if

        if mx<>old_mx or my<>old_my or mw<>old_mw then
                line (0,0)-(sw,sh), _rgb(0,0,0), bf

                'locate 1,1
                '? mx, my, mw, mb

                for b = 0 to 2*pi step 2*pi/3
                        circle (r*cos(b) + sw/2, r*sin(b) + sh/2), rr
                next

                a = _atan2(my - sy, mx - sx)

                x0 = sx
                y0 = sy

                for t = 0 to 1000
                        x = t*cos(a) + x0
                        y = t*sin(a) + y0

                        for b = 0 to 2*pi step 2*pi/3
                                if x >= 0 and x < sw and y >=0 and y < sh then
                                        x1 = r*cos(b) + sw/2
                                        y1 = r*sin(b) + sh/2

                                        dx = x - x1
                                        dy = y - y1
                                        if dx*dx + dy*dy < rr*rr then
                                                a1 = _atan2(dy, dx)
                                                a2 = 2*a1 - a - pi

                                                line (x0, y0)-(x, y), _rgb(233,205,89)

                                                x0 = x
                                                y0 = y
                                                a = a2
                                                t = 0
                                                exit for
                                        end if
                                end if
                        next
                next

                line (x0, y0)-(x, y), _rgb(233,205,89)

        end if

        old_mx = mx
        old_my = my
        old_mw = mw

        _display
        _limit 50
loop until _keyhit = 27
system
Reply


Messages In This Thread
Vince's Corner Takeout - by bplus - 04-29-2022, 02:12 PM
RE: Vince's Corner Takeout - by vince - 04-29-2022, 09:34 PM
RE: Vince's Corner Takeout - by vince - 05-02-2022, 03:10 AM
RE: Vince's Corner Takeout - by bplus - 05-02-2022, 04:25 AM
RE: Vince's Corner Takeout - by vince - 05-02-2022, 11:16 PM
RE: Vince's Corner Takeout - by vince - 05-03-2022, 01:10 AM
RE: Vince's Corner Takeout - by bplus - 05-03-2022, 01:15 AM
RE: Vince's Corner Takeout - by vince - 05-03-2022, 04:26 AM
RE: Vince's Corner Takeout - by bplus - 05-03-2022, 03:32 PM
RE: Vince's Corner Takeout - by vince - 05-10-2022, 03:41 AM
RE: Vince's Corner Takeout - by vince - 05-10-2022, 03:57 AM
RE: Vince's Corner Takeout - by dcromley - 05-10-2022, 02:57 PM
RE: Vince's Corner Takeout - by vince - 05-10-2022, 08:14 PM
RE: Vince's Corner Takeout - by SMcNeill - 05-10-2022, 02:59 PM
RE: Vince's Corner Takeout - by vince - 05-11-2022, 01:13 AM
RE: Vince's Corner Takeout - by dcromley - 05-11-2022, 01:58 AM
RE: Vince's Corner Takeout - by vince - 06-01-2022, 09:05 AM
RE: Vince's Corner Takeout - by vince - 08-11-2022, 02:51 AM
RE: Vince's Corner Takeout - by bplus - 06-03-2022, 02:47 PM
RE: Vince's Corner Takeout - by triggered - 06-04-2022, 02:00 AM
RE: Vince's Corner Takeout - by vince - 06-07-2022, 02:02 AM
RE: Vince's Corner Takeout - by bplus - 06-07-2022, 02:15 AM
RE: Vince's Corner Takeout - by vince - 07-13-2022, 05:23 AM
RE: Vince's Corner Takeout - by BSpinoza - 07-14-2022, 04:54 AM
RE: Vince's Corner Takeout - by bplus - 07-14-2022, 04:35 PM
RE: Vince's Corner Takeout - by aurel - 08-11-2022, 01:02 PM
RE: Vince's Corner Takeout - by bplus - 08-11-2022, 04:22 PM
RE: Vince's Corner Takeout - by aurel - 08-11-2022, 05:33 PM
RE: Vince's Corner Takeout - by BSpinoza - 08-12-2022, 03:44 AM
RE: Vince's Corner Takeout - by vince - 08-11-2022, 08:42 PM
RE: Vince's Corner Takeout - by vince - 08-19-2022, 05:00 AM
RE: Vince's Corner Takeout - by bplus - 08-19-2022, 06:33 PM
RE: Vince's Corner Takeout - by vince - 08-23-2022, 10:04 PM
RE: Vince's Corner Takeout - by vince - 11-04-2022, 01:48 AM
RE: Vince's Corner Takeout - by vince - 03-31-2023, 11:07 PM
RE: Vince's Corner Takeout - by vince - 09-18-2023, 11:45 PM
RE: Vince's Corner Takeout - by Dav - 09-19-2023, 12:54 AM
RE: Vince's Corner Takeout - by bplus - 09-19-2023, 01:37 AM
RE: Vince's Corner Takeout - by GareBear - 09-19-2023, 03:56 PM
RE: Vince's Corner Takeout - by bplus - 09-19-2023, 04:47 PM
RE: Vince's Corner Takeout - by vince - 09-19-2023, 06:54 PM
RE: Vince's Corner Takeout - by bplus - 09-19-2023, 09:02 PM
RE: Vince's Corner Takeout - by vince - 01-13-2024, 07:15 PM
RE: Vince's Corner Takeout - by bplus - 01-13-2024, 07:59 PM
RE: Vince's Corner Takeout - by GareBear - 01-13-2024, 10:54 PM
RE: Vince's Corner Takeout - by vince - 02-16-2024, 04:01 AM
RE: Vince's Corner Takeout - by bplus - 02-16-2024, 02:27 PM
RE: Vince's Corner Takeout - by vince - 02-16-2024, 07:16 PM
RE: Vince's Corner Takeout - by Sprezzo - 02-17-2024, 03:04 AM
RE: Vince's Corner Takeout - by bplus - 02-17-2024, 02:44 PM
RE: Vince's Corner Takeout - by vince - 10-07-2024, 08:11 AM
RE: Vince's Corner Takeout - by bplus - 10-07-2024, 01:32 PM
RE: Vince's Corner Takeout - by vince - 10-11-2024, 12:05 AM
RE: Vince's Corner Takeout - by vince - 10-11-2024, 12:16 AM
RE: Vince's Corner Takeout - by PhilOfPerth - 10-11-2024, 03:51 AM
RE: Vince's Corner Takeout - by vince - 10-11-2024, 07:55 PM
RE: Vince's Corner Takeout - by PhilOfPerth - 10-11-2024, 11:30 PM
RE: Vince's Corner Takeout - by vince - 10-15-2024, 10:54 AM
RE: Vince's Corner Takeout - by bplus - 10-15-2024, 01:40 PM



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