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code_pour_dessiner.asm
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; external functions from X11 library
extern XOpenDisplay
extern XDisplayName
extern XCloseDisplay
extern XCreateSimpleWindow
extern XMapWindow
extern XRootWindow
extern XSelectInput
extern XFlush
extern XCreateGC
extern XSetForeground
extern XDrawLine
extern XDrawPoint
extern XFillArc
extern XNextEvent
; external functions from stdio library (ld-linux-x86-64.so.2)
extern printf
extern exit
%define StructureNotifyMask 131072
%define KeyPressMask 1
%define ButtonPressMask 4
%define MapNotify 19
%define KeyPress 2
%define ButtonPress 4
%define Expose 12
%define ConfigureNotify 22
%define CreateNotify 16
%define QWORD 8
%define DWORD 4
%define WORD 2
%define BYTE 1
global main
section .bss
display_name: resq 1
screen: resd 1
depth: resd 1
connection: resd 1
width: resd 1
height: resd 1
window: resq 1
gc: resq 1
coordsX: resd 3
coordsY: resd 3
i: resb 1
minX: resd 1
maxX: resd 1
minY: resd 1
maxY: resd 1
section .data
event: times 24 dq 0
x1: dd 0
x2: dd 0
y1: dd 0
y2: dd 0
section .text
;##################################################
;########### PROGRAMME PRINCIPAL ##################
;##################################################
main:
;define coords
mov byte[i], 0
new_point:
movzx ecx, byte[i]
call randomCoords
mov dword[coordsX + DWORD * ecx], r8d
call randomCoords
mov dword[coordsY + DWORD * ecx], r8d
inc byte[i]
cmp byte[i], 3
jb new_point
xor rdi,rdi
call XOpenDisplay ; Création de display
mov qword[display_name],rax ; rax=nom du display
; display_name structure
; screen = DefaultScreen(display_name);
mov rax,qword[display_name]
mov eax,dword[rax+0xe0]
mov dword[screen],eax
mov rdi,qword[display_name]
mov esi,dword[screen]
call XRootWindow
mov rbx,rax
mov rdi,qword[display_name]
mov rsi,rbx
mov rdx,10
mov rcx,10
mov r8,400 ; largeur
mov r9,400 ; hauteur
push 0xFFFFFF ; background 0xRRGGBB
push 0x00FF00
push 1
call XCreateSimpleWindow
mov qword[window],rax
mov rdi,qword[display_name]
mov rsi,qword[window]
mov rdx,131077 ;131072
call XSelectInput
mov rdi,qword[display_name]
mov rsi,qword[window]
call XMapWindow
mov rsi,qword[window]
mov rdx,0
mov rcx,0
call XCreateGC
mov qword[gc],rax
mov rdi,qword[display_name]
mov rsi,qword[gc]
mov rdx,0x000000 ; Couleur du crayon
call XSetForeground
boucle: ; boucle de gestion des évènements
mov rdi,qword[display_name]
mov rsi,event
call XNextEvent
cmp dword[event],ConfigureNotify ; à l'apparition de la fenêtre
je dessin ; on saute au label 'dessin'
cmp dword[event],KeyPress ; Si on appuie sur une touche
je closeDisplay ; on saute au label 'closeDisplay' qui ferme la fenêtre
jmp boucle
;#########################################
;# DEBUT DE LA ZONE DE DESSIN #
;#########################################
dessin:
mov rdi, qword[display_name]
mov rsi, qword[gc]
mov edx, 0x000000
call XSetForeground
mov r12, coordsX
mov r13, coordsY
call drawTriangle
mov r12, coordsX
call triangleMinCoordOnAxis
mov dword[minX], r9d
call triangleMaxCoordOnAxis
mov dword[maxX], r9d
mov r12, coordsY
call triangleMinCoordOnAxis
mov dword[minY], r9d
call triangleMaxCoordOnAxis
mov dword[maxY], r9d
mov rdi, qword[display_name]
mov rsi, qword[gc]
mov edx, 0xFF0000
call XSetForeground
mov rdi, qword[display_name]
mov rsi, qword[window]
mov rdx, qword[gc]
mov ecx, dword[minX]
mov r8d, dword[minY]
mov r9d, dword[maxX]
push qword[minY]
call XDrawLine
mov rdi, qword[display_name]
mov rsi, qword[window]
mov rdx, qword[gc]
mov ecx, dword[minX]
mov r8d, dword[maxY]
mov r9d, dword[maxX]
push qword[maxY]
call XDrawLine
mov rdi, qword[display_name]
mov rsi, qword[window]
mov rdx, qword[gc]
mov ecx, dword[minX]
mov r8d, dword[minY]
mov r9d, dword[minX]
push qword[maxY]
call XDrawLine
mov rdi, qword[display_name]
mov rsi, qword[window]
mov rdx, qword[gc]
mov ecx, dword[maxX]
mov r8d, dword[minY]
mov r9d, dword[maxX]
push qword[maxY]
call XDrawLine
; ############################
; # FIN DE LA ZONE DE DESSIN #
; ############################
jmp flush
flush:
mov rdi,qword[display_name]
call XFlush
jmp boucle
mov rax,34
syscall
closeDisplay:
mov rax,qword[display_name]
mov rdi,rax
call XCloseDisplay
xor rdi,rdi
call exit
global randomCoords
randomCoords:
RDRAND r8d
cmp r8d, 0
jl randomCoords
mov eax, r8d
mov ebx, 400
cdq
idiv ebx
mov r8d, edx
ret
global drawTriangle
drawTriangle:
;r12 = coordonnées de début du triangle dans le tableau coordsX
;r13 = idem pour coordsY
push rbp
mov rbp, rsp
push rbx
mov rdi, qword[display_name]
mov rsi, qword[window]
mov rdx, qword[gc]
mov ecx, dword[r12]
mov r8d, dword[r13]
mov r9d, dword[r12 + DWORD]
push qword[r13 + DWORD]
call XDrawLine
mov rdi, qword[display_name]
mov rsi, qword[window]
mov rdx, qword[gc]
mov ecx, dword[r12 + DWORD]
mov r8d, dword[r13 + DWORD]
mov r9d, dword[r12 + DWORD * 2]
push qword[r13 + DWORD * 2]
call XDrawLine
mov rdi, qword[display_name]
mov rsi, qword[window]
mov rdx, qword[gc]
mov ecx, dword[r12]
mov r8d, dword[r13]
mov r9d, dword[r12 + DWORD * 2]
push qword[r13 + DWORD * 2]
call XDrawLine
pop rbx
mov rsp, rbp
pop rbp
ret
global triangleMinCoordOnAxis
triangleMinCoordOnAxis:
mov eax, dword[r12 + DWORD]
cmp dword[r12], eax
jb firstGreater
mov r9d, dword[r12]
jmp secondStepMin
firstGreater:
mov r9d, eax
secondStepMin:
cmp r9d, dword[r12 + DWORD * 2]
ja endMin
mov r9d, dword[r12 + DWORD * 2]
endMin:
ret
global triangleMaxCoordOnAxis
triangleMaxCoordOnAxis:
mov eax, dword[r12 + DWORD]
cmp dword[r12], eax
ja firstLower
mov r9d, dword[r12]
jmp secondStepMax
firstLower:
mov r9d, eax
secondStepMax:
cmp r9d, dword[r12 + DWORD * 2]
jb endMax
mov r9d, dword[r12 + DWORD * 2]
endMax:
ret
global sensTriangle
sensTriangle:
; r12 coords X
; r13 coords Y
; r14b = 0:direct 1: indirect
mov r10, r12
mov r11, r13
mov r9d, dword[r10 + DWORD]
sub dword[r10], r9d ; -11
sub dword[r10 + DWORD * 2], r9d ; -15
mov r9d, dword[r11 + DWORD]
sub dword[r11], r9d ; -49
sub dword[r11 + DWORD * 2], r9d ; -9
mov eax, dword[r10]
imul dword[r11 + DWORD * 2]
mov dword[r10], eax
mov eax, dword[r10 + DWORD * 2]
imul dword[r11]
sub dword[r10], eax
cmp dword[r10], 0
jl direct
mov r14b, 1
jmp endSens
direct:
mov r14b, 0
endSens:
ret