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How can you modify the air radar?
I am doing 7 labs in assembler on a graph, I sketched an air radar, how can I make it show a random number of points, and the points move and they are visible only when the radar beam passes through them?
org 100h
mov ax,13h
int 10h
;очищаем видеобуффер
mov di,screen
mov cx,16000
xor eax,eax
rep stosd
push 0A000h
pop es
;устанавливаем палитру (63 градации зелёного)
mov cx,127
@@:mov dx,3C8h
mov ax,cx
out dx,al
inc dx
xor al,al
out dx,al
cmp cx,63
cmc
sbb ax,ax
or ax,cx
out dx,al
xor al,al
out dx,al
loop @b
fldz
main:fadd [x]
fld st0
fsincos
fmul [aspectratio] ;чтобы получился круг нужно учитывать отношение высоты к ширине (240/320=0.75)
fxch st1
;рисуем линию
fldz
fldz
mov cx,120
@@:fadd st0,st2
fist word[esp-4]
fxch st1
fadd st0,st3
fist word[esp-2]
fxch st1
imul di,[esp-2],320
add di,[esp-4]
mov byte[screen+di+32160],63
mov si,6304
cmp di,-6304
jne skip
mov word[screen+di+32160+320],7F7Fh
mov dword[screen+di+32160+639],7F7F7F7Fh
mov dword[screen+di+32160+959],7F7F7F7Fh
mov word[screen+di+32160+1280],7F7Fh
loop @b
; jne skip
mov word[screen+si+32160+320],7f7Fh
mov dword[screen+si+32160+639],7f7F7F7Fh
mov dword[screen+si+32160+959],7f7F7F7Fh
mov word[screen+si+32160+1280],7f7Fh
skip:
loop @b
fstp st0
fstp st0
fstp st0
fstp st0
;затухание цвета
mov di,63999
@@:sub byte[screen+di],1
adc byte[screen+di],0
dec di
jne @b
;ожидание обратного вертикального хода луча
mov dx,3DAh
@@:in al,dx
test al,8
je @b
;копируем видеобуффер на экран
mov si,screen
xor di,di
mov cx,16000
rep movsd
;если нажат escape - выход
in al,60h
dec al
jne main
ret
x dd 0.007
aspectratio dd 0.75
screen:
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