;
; application : Caritas - flat shading, Gouraud shading,
;               enviornament mapping, bump mapping
; compiler    : FASM
; system      : KolibriOS
; author      : macgub alias Maciej Guba
; email       : macgub3@wp.pl
; web         : www.menuet.xt.pl
; Fell free to use this intro in your own distribution of KolibriOS.
; Special greetings to all MenuetOS maniax in the world.
; I hope because my intros Christian Belive will be near to each of You.


; Some adjustments made by Madis Kalme
; madis.kalme@mail.ee
; I tried optimizing it a bit, but don't know if it was successful. The objects
; can be:
; 1) Read from a file (*.3DS standard)
; 2) Written in manually (at the end of the code)
SIZE_X equ 350
SIZE_Y equ 350
TIMEOUT equ 4
ROUND equ 10
TEX_X equ 512	  ; texture width
TEX_Y equ 512	  ;         height
TEX_SHIFT equ 9  ; texture width shifting
TEXTURE_SIZE EQU (TEX_X * TEX_Y)-1
TEX equ  SHIFTING ;  TEX={SHIFTING | FLUENTLY}
FLUENTLY = 0
SHIFTING = 1
CATMULL_SHIFT equ 8
NON   =   0
MMX   =   1

Ext   =   MMX			;Ext={ NON | MMX}

use32
	org    0x0
	db     'MENUET01'	; 8 byte id
	dd     0x01		; header version
	dd     START		; start of code
	dd     I_END		; size of image
	dd     I_END		; memory for app
	dd     I_END		; esp
	dd     0x0 , 0x0	; I_Param , I_Icon

START:	  ; start of execution
	cld
 ;       call alloc_buffer_mem
	call read_from_file
	call init_triangles_normals
	call init_point_normals
	call init_envmap
	mov  edi,bumpmap
	call calc_bumpmap
	call calc_bumpmap_coords
	call draw_window


still:
	mov	eax,23		; wait here for event with timeout
	mov	ebx,TIMEOUT
	cmp	[speed_flag],1
	jne	.skip
	mov	eax,11
    .skip:
	int	0x40

	cmp	eax,1		; redraw request ?
	je	red
	cmp	eax,2		; key in buffer ?
	je	key
	cmp	eax,3		; button in buffer ?
	je	button

	jmp	noclose

    red:			; redraw
	call	draw_window
	jmp	noclose

    key:			; key
	mov	eax,2		; just read it and ignore
	int	0x40
	jmp	noclose

    button:			; button
	mov	eax,17		; get id
	int	0x40

	cmp	ah,1		; button id=1 ?
	jne	.ch_another

	mov	eax,-1		; close this program
	int	0x40
      .ch_another:
	cmp	ah,2
	jne	.ch_another1
	inc	[r_flag]
	cmp	[r_flag],3
	jne	noclose
	mov	[r_flag],0
      .ch_another1:
	cmp	ah,3
	jne	.ch_another2
	inc	[dr_flag]
	cmp	[dr_flag],4
	jne	noclose
	mov	[dr_flag],0
      .ch_another2:
	cmp	ah,4			 ; toggle speed
	jne	@f
	inc	[speed_flag]
	cmp	[speed_flag],2
	jne	noclose
	mov	[speed_flag],0
      @@:
	cmp	ah,5
	jne	@f			 ;scale-
	mov	[scale],0.7
	fninit
	fld	[sscale]
	fmul	[scale]
	fstp	[sscale]
	call	read_from_file
	mov	ax,[vect_x]  ;-- last change
	mov	bx,[vect_y]
	mov	cx,[vect_z]
	call	add_vector
;        call    do_scale
      @@:
	cmp	ah,6
	jne	@f			; scale+
	mov	[scale],1.3
	fninit
	fld	[sscale]
	fmul	[scale]
	fstp	[sscale]
	call	read_from_file
	mov	ax,[vect_x]
	mov	bx,[vect_y]
	mov	cx,[vect_z]
	call	add_vector
	call	init_triangles_normals
	call	init_point_normals
      @@:
	cmp	ah,7
	jne	@f
	xor	ax,ax		 ;add vector to object and rotary point
	mov	bx,-10
	xor	cx,cx
	call	add_vector
	sub	[vect_y],10
	sub	[yo],10
      @@:
	cmp	ah,8
	jne	@f
	xor	ax,ax
	xor	bx,bx
	mov	cx,10
	call	add_vector
	add	[vect_z],10
	add	[zo],10
      @@:
	cmp	ah,9
	jne	@f
	mov	ax,-10
	xor	bx,bx
	xor	cx,cx
	call	add_vector
	sub	[vect_x],10
	sub	[xo],10
      @@:
	cmp	ah,10
	jne	@f
	mov	ax,10
	xor	bx,bx
	xor	cx,cx
	call	add_vector
	add	[vect_x],10
	add	[xo],10
      @@:
	cmp	ah,11
	jne	@f
	xor	ax,ax
	xor	bx,bx
	mov	cx,-10
	call	add_vector
	sub	[vect_z],10
	sub	[zo],10
      @@:
	cmp	ah,12
	jne	@f
	xor	ax,ax
	mov	bx,10
	xor	cx,cx
	call	add_vector
	add	[vect_y],10
	add	[yo],10
      @@:
	cmp	ah,13			 ; change main color -
	jne	@f			 ; - lead color setting
	cmp	[max_color_r],245
	jge	@f
	add	[max_color_r],10
	call	init_envmap
      @@:
	cmp	ah,14
	jne	@f
	cmp	[max_color_g],245
	jge	@f
	add	[max_color_g],10
	call	init_envmap
      @@:
	cmp	ah,15
	jne	@f
	cmp	[max_color_b],245
	jge	@f
	add	[max_color_b],10
	call	init_envmap
      @@:
	cmp	ah,16			 ; change main color
	jne	@f
	cmp	[max_color_r],10
	jle	@f
	sub	[max_color_r],10
	call	init_envmap
      @@:
	cmp	ah,17
	jne	@f
	cmp	[max_color_g],10
	jle	@f
	sub	[max_color_g],10
	call	init_envmap
      @@:
	cmp	ah,18
	jne	@f
	cmp	[max_color_b],10
	jle	@f
	sub	[max_color_b],10
	call	init_envmap
      @@:
	cmp	ah,19
	jne	@f
	inc	[catmull_flag]
	cmp	[catmull_flag],2
	jne	@f
	mov	[catmull_flag],0
      @@:
    noclose:

	call	calculate_angle ; calculates sinus and cosinus
	call	copy_point_normals
   ; copy normals and rotate the copy using sin/cosbeta - best way
	call	rotate_point_normals
	cmp	[dr_flag],2
	jge	@f
	call	calculate_colors
    @@:
	call	copy_points
	call	rotate_points
	call	translate_perspective_points; translate from 3d to 2d
	call	clrscr		; clear the screen
	cmp	[catmull_flag],1  ;non sort if Catmull
	je	.no_sort
	call	sort_triangles
      .no_sort:
	call	fill_Z_buffer	  ; make background

    RDTSC
    push eax
	call	draw_triangles	; draw all triangles from the list

    RDTSC
    sub eax,[esp]
    sub eax,41
    ;    lea     esi,[debug_points]
    ;    lea     edi,[debug_points+6]
    ;    lea     ebx,[debug_vector1]
    ;    call    make_vector
    ;    fninit
    ;    fld     [sinbeta_one]
    ;    fimul   [debug_dwd]
    ;    fistp   [debug_dd]
    ;    movzx    eax,[debug_dd]


    mov     ecx,10
  .dc:

    pop eax
macro show
{
	mov	eax,7		; put image
	mov	ebx,screen
	mov	ecx,SIZE_X shl 16 + SIZE_Y
	xor	edx,edx
	int	0x40
}
    show


	jmp	still

;--------------------------------------------------------------------------------
;-------------------------PROCEDURES---------------------------------------------
;--------------------------------------------------------------------------------
include "tex3.ASM"
include "flat_cat.ASM"
include "grd_cat.ASM"
include "tex_cat.ASM"
include "bump_cat.ASM"
include "3dmath.asm"
include "grd3.asm"
include "flat3.asm"
include "bump3.asm"
include "b_procs.asm"


;alloc_buffer_mem:
;        mov     eax,68
;        mov     ebx,5
;        mov     ecx,SIZE_X*SIZE_Y*3
;        int     0x40
;        mov     [screen],eax
;ret
calc_bumpmap_coords:
;        fninit
	mov	esi,points
	mov	edi,tex_points
;      @@:
;        add     esi,2
;        fild    word[esi]
;        fmul    [bump_scale]
;        fistp   word[edi]
;        fild    word[esi+2]
;        fmul    [bump_scale]
;        fistp   word[edi+2]
;        add     esi,4
;        add     edi,4
;        cmp     [esi],dword -1
;        jnz     @b
      @@:
	 add	 esi,2
	 movsd
      ;   add     esi,2
	 cmp	 dword[esi],dword -1
	 jne	 @b
ret
;bump_scale  dd 1.4  ;TEX_X/SIZE_X

init_envmap:

.temp equ word [ebp-2]
	 push	  ebp
	 mov	  ebp,esp
	 sub	  esp,2
	 mov	  edi,envmap
	 fninit

	 mov	  dx,-256
    .ie_ver:
	 mov	  cx,-256
    .ie_hor:
	 mov	  .temp,cx
	 fild	  .temp
	 fmul	  st,st0
	 mov	  .temp,dx
	 fild	  .temp
	 fmul	  st,st0
	 faddp
	 fsqrt
	 mov	  .temp,254
	 fisubr   .temp
	 fmul	  [env_const]
	 fistp	  .temp
	 mov	  ax,.temp

	 or	 ax,ax
	 jge	 .ie_ok1
	 xor	 ax,ax
	 jmp	 .ie_ok2
  .ie_ok1:
	 cmp	 ax,254
	 jle	 .ie_ok2
	 mov	 ax,254
  .ie_ok2:
	 push	 dx
	 mov	 bx,ax
	 mul	 [max_color_b]
	 shr	 ax,8
	 stosb
	 mov	 ax,bx
	 mul	 [max_color_g]
	 shr	 ax,8
	 stosb
	 mov	 ax,bx
	 mul	 [max_color_r]
	 shr	 ax,8
	 stosb
	 pop	 dx

	 inc	 cx
	 cmp	 cx,256
	 jne	 .ie_hor

	 inc	 dx
	 cmp	 dx,256
	 jne	 .ie_ver

	 mov	 esp,ebp
	 pop	 ebp
macro debug
{
	 mov	 edi,envmap
	 mov	 ecx,512*512*3/4
	 mov	 eax,0xffffffff
	 rep	 stosd
}
ret
calculate_colors:
	fninit
	xor	ebx,ebx
	movzx	ecx,[points_count_var]
	lea	ecx,[ecx*3]
	add	ecx,ecx
      .cc_again:
	mov	esi,light_vector
	lea	edi,[point_normals_rotated+ebx*2]
	call	dot_product
	fcom	[dot_min]
	fstsw	ax
	sahf
	ja	.cc_ok1
	ffree	st
	mov	dword[points_color+ebx],0
	mov	word[points_color+ebx+4],0
	add	ebx,6
	cmp	ebx,ecx
	jne	.cc_again
	jmp	.cc_done
      .cc_ok1:
	fcom	[dot_max]
	fstsw	ax
	sahf
	jb	.cc_ok2
	ffree	st
	mov	dword[points_color+ebx],0  ; clear r,g,b
	mov	word[points_color+ebx+4],0
	add	ebx,6
	cmp	ebx,ecx
	jne	.cc_again
	jmp	.cc_done
      .cc_ok2:
	fld	st
	fld	st
	fimul	[max_color_r]
	fistp	word[points_color+ebx]	      ;each color as word
	fimul	[max_color_g]
	fistp	word[points_color+ebx+2]
	fimul	[max_color_b]
	fistp	word[points_color+ebx+4]
	add	ebx,6
	cmp	ebx,ecx
	jne	.cc_again
     .cc_done:
ret
copy_point_normals:
	movzx	ecx,[points_count_var]
	shl	ecx,2
	inc	ecx
	mov	esi,point_normals
	mov	edi,point_normals_rotated
	rep	movsd
ret
rotate_point_normals:
	movzx	ecx,[points_count_var]
	mov	ebx,point_normals_rotated
	fninit			   ; for now only rotate around Z axle
     .again_r:
	cmp	[r_flag],1
	je	.z_rot
	cmp	[r_flag],2
	je	.x_rot

      .y_rot:
	fld	dword[ebx]	   ; x
	fld	[sinbeta]
	fmul	dword[ebx+8]	   ; z * sinbeta
	fchs
	fld	[cosbeta]
	fmul	dword[ebx]	   ; x * cosbeta
	faddp
	fstp	dword[ebx]	   ; new x
	fmul	[sinbeta]	   ; old x * sinbeta
	fld	[cosbeta]
	fmul	dword[ebx+8]	   ; z * cosbeta
	faddp
	fstp	dword[ebx+8]	   ; new z
	add	ebx,12
	loop	.y_rot
	jmp	.end_rot
      .z_rot:
	fld	dword[ebx]	;x
	fld	[sinbeta]
	fmul	dword[ebx+4]	;y
	fld	[cosbeta]
	fmul	dword[ebx]	;x
	faddp
	fstp	dword[ebx]	;new x
	fmul	[sinbeta]	; sinbeta * old x
	fchs
	fld	[cosbeta]
	fmul	dword[ebx+4]	     ; cosbeta * y
	faddp
	fstp	dword[ebx+4]	; new y
	add	ebx,12
	loop	.z_rot
	jmp	.end_rot
       .x_rot:
	fld	dword[ebx+4]	;y
	fld	[sinbeta]
	fmul	dword[ebx+8]	;z
	fld	[cosbeta]
	fmul	dword[ebx+4]	;y
	faddp
	fstp	dword[ebx+4]	; new y
	fmul	[sinbeta]	; sinbeta * old y
	fchs
	fld	[cosbeta]
	fmul	dword[ebx+8]
	faddp
	fstp	dword[ebx+8]
	add	ebx,12
	loop	.x_rot
       .end_rot:
ret
init_triangles_normals:
	mov	ebx,triangles_normals
	mov	ebp,triangles
     @@:
	push	ebx
	mov	ebx,vectors
	movzx	esi,word[ebp]	       ; first point index
	lea	esi,[esi*3]
	lea	esi,[points+esi*2]     ; esi - pointer to 1st 3d point
	movzx	edi,word[ebp+2]        ; second point index
	lea	edi,[edi*3]
	lea	edi,[points+edi*2]     ; edi - pointer to 2nd 3d point
	call	make_vector
	add	ebx,12
	mov	esi,edi
	movzx	edi,word[ebp+4]        ; third point index
	lea	edi,[edi*3]
	lea	edi,[points+edi*2]
	call	make_vector
	mov	edi,ebx 		; edi - pointer to 2nd vector
	mov	esi,ebx
	sub	esi,12			; esi - pointer to 1st vector
	pop	ebx
	call	cross_product
	mov	edi,ebx
	call	normalize_vector
	add	ebp,6
	add	ebx,12
	cmp	dword[ebp],-1
	jne	@b
ret

init_point_normals:
.x equ dword [ebp-4]
.y equ dword [ebp-8]
.z equ dword [ebp-12]
.point_number equ word [ebp-26]
.hit_faces    equ word [ebp-28]

	fninit
	mov	  ebp,esp
	sub	  esp,28
	mov	  edi,point_normals
	mov	  .point_number,0
    .ipn_loop:
	mov	  .hit_faces,0
	mov	  .x,0
	mov	  .y,0
	mov	  .z,0
	mov	  esi,triangles
	xor	  ecx,ecx	       ; ecx - triangle number
    .ipn_check_face:
	xor	  ebx,ebx	       ; ebx - 'position' in one triangle
    .ipn_check_vertex:
	movzx	  eax,word[esi+ebx]    ;  eax - point_number
	cmp	  ax,.point_number
	jne	  .ipn_next_vertex
	push	  esi
	mov	  esi,ecx
	lea	  esi,[esi*3]
	lea	  esi,[triangles_normals+esi*4]
       ; shl       esi,2
       ; add       esi,triangles_normals

	fld	  .x
	fadd	  dword[esi+vec_x]
	fstp	  .x
	fld	  .y
	fadd	  dword[esi+vec_y]
	fstp	  .y
	fld	  .z
	fadd	  dword[esi+vec_z]
	fstp	  .z
	pop	  esi
	inc	  .hit_faces
	jmp	  .ipn_next_face
    .ipn_next_vertex:
	add	  ebx,2
	cmp	  ebx,6
	jne	  .ipn_check_vertex
    .ipn_next_face:
	add	  esi,6
	inc	  ecx
	cmp	  cx,[triangles_count_var]
	jne	  .ipn_check_face

	fld	  .x
	fidiv	  .hit_faces
	fstp	  dword[edi+vec_x]
	fld	  .y
	fidiv	  .hit_faces
	fstp	  dword[edi+vec_y]
	fld	  .z
	fidiv	  .hit_faces
	fstp	  dword[edi+vec_z]
	call	  normalize_vector
	add	  edi,12  ;type vector 3d
	inc	  .point_number
	mov	  dx,.point_number
	cmp	  dx,[points_count_var]
	jne	  .ipn_loop

	mov	  esp,ebp
ret

add_vector:
	mov ebp,points
       @@:
	add word[ebp],ax
	add word[ebp+2],bx
	add word[ebp+4],cx
	add ebp,6
	cmp dword[ebp],-1
	jne @b
ret
;do_scale:
;        fninit
;        mov ebp,points
;      .next_sc:
;        fld1
;        fsub [scale]
;        fld st
;        fimul [xo]
;        fld [scale]
;        fimul word[ebp] ;x
;        faddp
;        fistp word[ebp]
;        fld st
;        fimul [yo]
;        fld [scale]
;        fimul word[ebp+2]
;        faddp
;        fistp word[ebp+2]
;        fimul [zo]
;        fld [scale]
;        fimul word[ebp+4]
;        faddp
;        fistp word[ebp+4]
;        add ebp,6
;        cmp dword[ebp],-1
;        jne .next_sc
;ret
sort_triangles:
	mov	esi,triangles
	mov	edi,triangles_with_z
	mov	ebp,points_rotated

    make_triangle_with_z:	;makes list with triangles and z position
	movzx	eax,word[esi]
	lea	eax,[eax*3]
	movzx	ecx,word[ebp+eax*2+4]

	movzx	eax,word[esi+2]
	lea	eax,[eax*3]
	add	cx,word[ebp+eax*2+4]

	movzx	eax,word[esi+4]
	lea	eax,[eax*3]
	add	cx,word[ebp+eax*2+4]

	mov	ax,cx
       ; cwd
       ; idiv    word[i3]
	movsd			; store vertex coordinates
	movsw
	stosw			; middle vertex coordinate  'z' in triangles_with_z list
	cmp	dword[esi],-1
	jne	make_triangle_with_z
	movsd			; copy end mark
	mov	eax,4
	lea	edx,[edi-8-trizdd]
	mov	[high],edx
	call	quicksort
	mov	eax,4
	mov	edx,[high]
	call	insertsort
	jmp	end_sort

    quicksort:
	mov	ecx,edx
	sub	ecx,eax
	cmp	ecx,32
	jc	.exit
	lea	ecx,[eax+edx]
	shr	ecx,4
	lea	ecx,[ecx*8-4]; i
	mov	ebx,[trizdd+eax]; trizdd[l]
	mov	esi,[trizdd+ecx]; trizdd[i]
	mov	edi,[trizdd+edx]; trizdd[h]
	cmp	ebx,esi
	jg	@f		; direction NB! you need to negate these to invert the order
      if Ext=NON
	mov	[trizdd+eax],esi
	mov	[trizdd+ecx],ebx
	mov	ebx,[trizdd+eax-4]
	mov	esi,[trizdd+ecx-4]
	mov	[trizdd+eax-4],esi
	mov	[trizdd+ecx-4],ebx
	mov	ebx,[trizdd+eax]
	mov	esi,[trizdd+ecx]
      else
	movq	mm0,[trizdq+eax-4]
	movq	mm1,[trizdq+ecx-4]
	movq	[trizdq+ecx-4],mm0
	movq	[trizdq+eax-4],mm1
	xchg	ebx,esi
      end if
      @@:
	cmp	ebx,edi
	jg	@f		; direction
      if Ext=NON
	mov	[trizdd+eax],edi
	mov	[trizdd+edx],ebx
	mov	ebx,[trizdd+eax-4]
	mov	edi,[trizdd+edx-4]
	mov	[trizdd+eax-4],edi
	mov	[trizdd+edx-4],ebx
	mov	ebx,[trizdd+eax]
	mov	edi,[trizdd+edx]
      else
	movq	mm0,[trizdq+eax-4]
	movq	mm1,[trizdq+edx-4]
	movq	[trizdq+edx-4],mm0
	movq	[trizdq+eax-4],mm1
	xchg	ebx,edi
      end if
      @@:
	cmp	esi,edi
	jg	@f		; direction
      if Ext=NON
	mov	[trizdd+ecx],edi
	mov	[trizdd+edx],esi
	mov	esi,[trizdd+ecx-4]
	mov	edi,[trizdd+edx-4]
	mov	[trizdd+ecx-4],edi
	mov	[trizdd+edx-4],esi
      else
	movq	mm0,[trizdq+ecx-4]
	movq	mm1,[trizdq+edx-4]
	movq	[trizdq+edx-4],mm0
	movq	[trizdq+ecx-4],mm1
;        xchg    ebx,esi
      end if
      @@:
	mov	ebp,eax 	; direction
	add	ebp,8	   ;   j
      if Ext=NON
	mov	esi,[trizdd+ebp]
	mov	edi,[trizdd+ecx]
	mov	[trizdd+ebp],edi
	mov	[trizdd+ecx],esi
	mov	esi,[trizdd+ebp-4]
	mov	edi,[trizdd+ecx-4]
	mov	[trizdd+ecx-4],esi
	mov	[trizdd+ebp-4],edi
      else
	movq	mm0,[trizdq+ebp-4]
	movq	mm1,[trizdq+ecx-4]
	movq	[trizdq+ecx-4],mm0
	movq	[trizdq+ebp-4],mm1
      end if
	mov	ecx,edx    ;   i; direction
	mov	ebx,[trizdd+ebp]; trizdd[j]
      .loop:
	sub	ecx,8		; direction
	cmp	[trizdd+ecx],ebx
	jl	.loop		; direction
      @@:
	add	ebp,8		; direction
	cmp	[trizdd+ebp],ebx
	jg	@b		; direction
	cmp	ebp,ecx
	jge	@f		; direction
      if Ext=NON
	mov	esi,[trizdd+ecx]
	mov	edi,[trizdd+ebp]
	mov	[trizdd+ebp],esi
	mov	[trizdd+ecx],edi
	mov	edi,[trizdd+ecx-4]
	mov	esi,[trizdd+ebp-4]
	mov	[trizdd+ebp-4],edi
	mov	[trizdd+ecx-4],esi
      else
	movq	mm0,[trizdq+ecx-4]
	movq	mm1,[trizdq+ebp-4]
	movq	[trizdq+ebp-4],mm0
	movq	[trizdq+ecx-4],mm1
      end if
	jmp	.loop
      @@:
      if Ext=NON
	mov	esi,[trizdd+ecx]
	mov	edi,[trizdd+eax+8]
	mov	[trizdd+eax+8],esi
	mov	[trizdd+ecx],edi
	mov	edi,[trizdd+ecx-4]
	mov	esi,[trizdd+eax+4]
	mov	[trizdd+eax+4],edi
	mov	[trizdd+ecx-4],esi
      else
	movq	mm0,[trizdq+ecx-4]
	movq	mm1,[trizdq+eax+4]; dir
	movq	[trizdq+eax+4],mm0; dir
	movq	[trizdq+ecx-4],mm1
      end if
	add	ecx,8
	push	ecx edx
	mov	edx,ebp
	call	quicksort
	pop	edx eax
	call	quicksort
      .exit:
    ret
    insertsort:
	mov	esi,eax
      .start:
	add	esi,8
	cmp	esi,edx
	ja	.exit
	mov	ebx,[trizdd+esi]
      if Ext=NON
	mov	ecx,[trizdd+esi-4]
      else
	movq	mm1,[trizdq+esi-4]
      end if
	mov	edi,esi
      @@:
	cmp	edi,eax
	jna	@f
	cmp	[trizdd+edi-8],ebx
	jg	@f		   ; direction
      if Ext=NON
	mov	ebp,[trizdd+edi-8]
	mov	[trizdd+edi],ebp
	mov	ebp,[trizdd+edi-12]
	mov	[trizdd+edi-4],ebp
      else
	movq	mm0,[trizdq+edi-12]
	movq	[trizdq+edi-4],mm0
      end if
	sub	edi,8
	jmp	@b
      @@:
      if Ext=NON
	mov	[trizdd+edi],ebx
	mov	[trizdd+edi-4],ecx
      else
	movq	[trizdq+edi-4],mm1
      end if
	jmp	.start
      .exit:
    ret
   end_sort:
    ; translate triangles_with_z to sorted_triangles
	mov	esi,triangles_with_z
      ;  mov     edi,sorted_triangles
	mov	 edi,triangles
    again_copy:
      if Ext=NON
	movsd
	movsw
	add	esi,2
      else
	movq	mm0,[esi]
	movq	[edi],mm0
	add	esi,8
	add	edi,6
      end if
	cmp	dword[esi],-1
	jne	again_copy
;      if Ext=MMX
;        emms
;      end if
	movsd  ; copy end mark too
ret

clrscr:
	mov	edi,screen
	mov	ecx,SIZE_X*SIZE_Y*3/4
	xor	eax,eax
      if Ext=NON
	rep	stosd
      else
	pxor	mm0,mm0
      @@:
	movq	[edi+00],mm0
	movq	[edi+08],mm0
	movq	[edi+16],mm0
	movq	[edi+24],mm0
	add	edi,32
	sub	ecx,8
	jnc	@b
      end if
ret

calculate_angle:
	fninit
;        fldpi
;        fidiv   [i180]
	fld	[piD180]
	fimul	[angle_counter]
	fsincos
	fstp	[sinbeta]
	fstp	[cosbeta]
	inc	[angle_counter]
	cmp	[angle_counter],360
	jne	end_calc_angle
	mov	[angle_counter],0
    end_calc_angle:
ret

rotate_points:
	fninit
	mov	ebx,points_rotated
    again_r:
	cmp	[r_flag],1
	je	.z_rot
	cmp	[r_flag],2
	je	.x_rot
    .y_rot:
	mov	eax,[ebx+2]	;z
	mov	ax,word[ebx]	;x
	sub	eax,dword[xo]
	mov	dword[xsub],eax
	fld	[sinbeta]
	fimul	[zsub]
	fchs
	fld	[cosbeta]
	fimul	[xsub]
	faddp
	fiadd	[xo]
	fistp	word[ebx]  ;x
	fld	[sinbeta]
	fimul	[xsub]
	fld	[cosbeta]
	fimul	[zsub]
	faddp
	fiadd	[zo]
	fistp	word[ebx+4] ;z
	jmp	.end_rot
   .z_rot:
	mov	ax,word[ebx]
	sub	ax,word[xo]	  ;need optimization
	mov	[xsub],ax
	mov	ax,word[ebx+2]
	sub	ax,word[yo]
	mov	[ysub],ax
	fld	[sinbeta]
	fimul	[ysub]
	fld	[cosbeta]
	fimul	[xsub]
	faddp
	fiadd	[xo]
	fistp	word[ebx]
	fld	[cosbeta]
	fimul	[ysub]
	fld	[sinbeta]
	fimul	[xsub]
	fchs
	faddp
	fiadd	[yo]
	fistp	word[ebx+2]
	jmp	.end_rot
   .x_rot:
	mov	ax,word[ebx+2]
	sub	ax,[yo]
	mov	[ysub],ax
	mov	ax,word[ebx+4]
	sub	ax,word[zo]
	mov	[zsub],ax
	fld	[sinbeta]
	fimul	[zsub]
	fld	[cosbeta]
	fimul	[ysub]
	faddp
	fiadd	[yo]
	fistp	word[ebx+2];y
	fld	[cosbeta]
	fimul	[zsub]
	fld	[sinbeta]
	fimul	[ysub]
	fchs
	faddp
	fiadd	[zo]
	fistp	word[ebx+4]
     .end_rot:
	add	ebx,6
	cmp	dword[ebx],-1
	jne	again_r
ret

draw_triangles:
	mov esi,triangles
    .again_dts:
	mov ebp,points_rotated
      if Ext=NON
	movzx	eax,word[esi]
	mov	[point_index1],ax
	lea	eax,[eax*3]
	add	eax,eax
	push	ebp
	add	ebp,eax
	mov	eax,[ebp]
	mov	dword[xx1],eax
	mov	eax,[ebp+4]
	mov	[zz1],ax
	pop	ebp


	movzx	eax,word[esi+2]
	mov	[point_index2],ax
	lea	eax,[eax*3]
	add	eax,eax
	push	ebp
	add	ebp,eax
	mov	eax,[ebp]
	mov	dword[xx2],eax
	mov	eax,[ebp+4]
	mov	[zz2],ax
	pop	ebp


	movzx	eax,word[esi+4]        ; xyz3 = [ebp+[esi+4]*6]
	mov	[point_index3],ax
	lea	eax,[eax*3]
	add	eax,eax
    ;    push    ebp
	add	ebp,eax
	mov	eax,[ebp]
	mov	dword[xx3],eax
	mov	eax,[ebp+4]
	mov	[zz3],ax
      else
	mov	eax,dword[esi]		 ; don't know MMX
	mov	dword[point_index1],eax
       ; shr     eax,16
       ; mov     [point_index2],ax
	mov	ax,word[esi+4]
	mov	[point_index3],ax
	movq	mm0,[esi]
	pmullw	mm0,qword[const6]
	movd	eax,mm0
	psrlq	mm0,16
	movd	ebx,mm0
	psrlq	mm0,16
	movd	ecx,mm0
	and	eax,0FFFFh
	and	ebx,0FFFFh
	and	ecx,0FFFFh
	movq	mm0,[ebp+eax]
	movq	mm1,[ebp+ebx]
	movq	mm2,[ebp+ecx]
	movq	qword[xx1],mm0
	movq	qword[xx2],mm1
	movq	qword[xx3],mm2
;        emms
      end if
	push esi
	; culling
	fninit
	mov	esi,point_index1
	mov	ecx,3
      @@:
	movzx	eax,word[esi]
	lea	eax,[eax*3]
	shl	eax,2
	lea	eax,[eax+point_normals_rotated]
	fld	dword[eax+8]   ; I check  Z element of normal vector
	ftst
	fstsw	ax
	sahf
	jb     @f
	ffree	st
	loop	@b
	jmp	.end_draw
      @@:
	ffree	st  ;is visable

	cmp	[dr_flag],0		  ; draw type flag
	je	.flat_draw
	cmp	[dr_flag],2
	je	.env_mapping
	cmp	[dr_flag],3
	je	.bump_mapping

	cmp	[catmull_flag],1
	je	@f

	movzx	edi,[point_index3]	; do gouraud shading catmull off
	lea	edi,[edi*3]
	lea	edi,[points_color+edi*2]
	push	word[edi]
	push	word[edi+2]
	push	word[edi+4]
	movzx	edi,[point_index2]
	lea	edi,[edi*3]
	lea	edi,[points_color+edi*2]
	push	word[edi]
	push	word[edi+2]
	push	word[edi+4]
	movzx	edi,[point_index1]
	lea	edi,[edi*3]
	lea	edi,[points_color+edi*2]
	push	word[edi]
	push	word[edi+2]
	push	word[edi+4]
	jmp	.both_draw
      @@:
	movzx	edi,[point_index3]	; do gouraud shading catmull on
	lea	edi,[edi*3]
	lea	edi,[points_color+edi*2]
	push	[zz3]
	push	word[edi]
	push	word[edi+2]
	push	word[edi+4]
	movzx	edi,[point_index2]
	lea	edi,[edi*3]
	lea	edi,[points_color+edi*2]
	push	[zz2]
	push	word[edi]
	push	word[edi+2]
	push	word[edi+4]
	movzx	edi,[point_index1]
	lea	edi,[edi*3]
	lea	edi,[points_color+edi*2]
	push	[zz1]
	push	word[edi]
	push	word[edi+2]
	push	word[edi+4]

   ;     movzx   edi,[point_index3]   ;gouraud shading according to light vector
   ;     lea     edi,[edi*3]
   ;     lea     edi,[4*edi+point_normals_rotated] ; edi - normal
   ;     mov     esi,light_vector
   ;     call    dot_product
   ;     fabs
   ;     fimul   [max_color_r]
   ;     fistp   [temp_col]
   ;     and     [temp_col],0x00ff
   ;     push    [temp_col]
   ;     push    [temp_col]
   ;     push    [temp_col]

   ;     movzx   edi,[point_index2]
   ;     lea     edi,[edi*3]
   ;     lea     edi,[4*edi+point_normals_rotated] ; edi - normal
   ;     mov     esi,light_vector
   ;     call    dot_product
   ;     fabs
   ;     fimul   [max_color_r]
   ;     fistp    [temp_col]
   ;     and     [temp_col],0x00ff
   ;     push    [temp_col]
   ;     push    [temp_col]
   ;     push    [temp_col]

   ;     movzx   edi,[point_index1]
   ;     lea     edi,[edi*3]
   ;     lea     edi,[4*edi+point_normals_rotated] ; edi - normal
   ;     mov     esi,light_vector
   ;     call    dot_product
   ;     fabs
   ;     fimul   [max_color_r]
   ;     fistp   [temp_col]
   ;     and     [temp_col],0x00ff
   ;     push    [temp_col]
   ;     push    [temp_col]
   ;     push    [temp_col]

;        xor     edx,edx            ; draw acording to position
;        mov     ax,[zz3]
;        add     ax,128
;        neg     al
;        and     ax,0x00ff
;        push    ax
;        neg     al
;        push    ax
;        mov     dx,[yy3]
;        and     dx,0x00ff
;        push    dx
;        mov     ax,[zz2]
;        add     ax,128
;        neg     al
;        and     ax,0x00ff
;        push    ax
;        neg     al
;        push    ax
;        mov     dx,[yy2]
;        and     dx,0x00ff
;        push    dx
;        mov     ax,[zz1]
;        add     ax,128
;        neg     al
;        and     ax,0x00ff
;        push    ax
;        neg     al
;        push    ax
;        mov     dx,[yy1]
;        and     dx,0x00ff
;        push    dx
    .both_draw:
	mov	eax,dword[xx1]
	ror	eax,16
	mov	ebx,dword[xx2]
	ror	ebx,16
	mov	ecx,dword[xx3]
	ror	ecx,16
	lea	edi,[screen]
	cmp	[catmull_flag],0
	je	@f
	lea	esi,[Z_buffer]
	call	gouraud_triangle_z
	jmp	.end_draw
       @@:
	call	gouraud_triangle
	jmp	.end_draw

     .flat_draw:
	movzx	edi,[point_index3]
	lea	edi,[edi*3]
	lea	edi,[points_color+edi*2]
	movzx	eax,word[edi]
	movzx	ebx,word[edi+2]
	movzx	ecx,word[edi+4]
	movzx	edi,[point_index2]
	lea	edi,[edi*3]
	lea	edi,[points_color+edi*2]
	add	ax,word[edi]
	add	bx,word[edi+2]
	add	cx,word[edi+4]
	movzx	edi,[point_index1]
	lea	edi,[edi*3]
	lea	edi,[points_color+edi*2]
	add	ax,word[edi]
	add	bx,word[edi+2]
	add	cx,word[edi+4]
	cwd
	idiv	[i3]
	mov	di,ax
	shl	edi,16
	mov	ax,bx
	cwd
	idiv	[i3]
	mov	di,ax
	shl	di,8
	mov	ax,cx
	cwd
	idiv	[i3]
	mov	edx,edi
	mov	dl,al
	and	edx,0x00ffffff


     ;   mov     ax,[zz1]      ; z position depend draw
     ;   add     ax,[zz2]
     ;   add     ax,[zz3]
     ;   cwd
     ;   idiv    [i3] ;    = -((a+b+c)/3+130)
     ;   add     ax,130
     ;   neg     al
     ;   xor     edx,edx
     ;   mov     ah,al           ;set color according to z position
     ;   shl     eax,8
     ;   mov     edx,eax

	mov	eax,dword[xx1]
	ror	eax,16
	mov	ebx,dword[xx2]
	ror	ebx,16
	mov	ecx,dword[xx3]
	ror	ecx,16
       ; mov     edi,screen
	lea	edi,[screen]
	cmp	[catmull_flag],0
	je	@f
	lea	esi,[Z_buffer]
	push	word[zz3]
	push	word[zz2]
	push	word[zz1]
	call	flat_triangle_z
	jmp	.end_draw
      @@:
	call	draw_triangle
	jmp	.end_draw
      .env_mapping:
       ; fninit
	cmp	[catmull_flag],0
	je	@f
	push	[zz3]
	push	[zz2]
	push	[zz1]
      @@:
	mov	esi,point_index1
	sub	esp,12
	mov	edi,esp
	mov	ecx,3
      @@:
	movzx	eax,word[esi]
	lea	eax,[eax*3]
	shl	eax,2
	add	eax,point_normals_rotated
	; texture x=(rotated point normal -> x * 255)+255
	fld	dword[eax]
	fimul	[correct_tex]
	fiadd	[correct_tex]
	fistp	word[edi]
	; texture y=(rotated point normal -> y * 255)+255
	fld	dword[eax+4]
	fimul	[correct_tex]
	fiadd	[correct_tex]
	fistp	word[edi+2]

	add	edi,4
	add	esi,2
	loop	@b

	mov	eax,dword[xx1]
	ror	eax,16
	mov	ebx,dword[xx2]
	ror	ebx,16
	mov	ecx,dword[xx3]
	ror	ecx,16
	mov	edi,screen
	mov	esi,envmap
	cmp	[catmull_flag],0
	je	@f
	mov	edx,Z_buffer
	call	tex_triangle_z
	jmp	.end_draw
      @@:
	call	tex_triangle
	jmp	.end_draw
      .bump_mapping:
	; fninit
	cmp	[catmull_flag],0
	je	@f
	push	Z_buffer
	push	[zz3]
	push	[zz2]
	push	[zz1]
      @@:
	mov	esi,point_index1
	sub	esp,12
	mov	edi,esp
	mov	ecx,3
      @@:
	movzx	eax,word[esi]
	lea	eax,[eax*3]
	shl	eax,2
	add	eax,point_normals_rotated
	; texture x=(rotated point normal -> x * 255)+255
	fld	dword[eax]
	fimul	[correct_tex]
	fiadd	[correct_tex]
	fistp	word[edi]
	; texture y=(rotated point normal -> y * 255)+255
	fld	dword[eax+4]
	fimul	[correct_tex]
	fiadd	[correct_tex]
	fistp	word[edi+2]

	add	edi,4
	add	esi,2
	loop	@b

	movzx  esi,[point_index3]
	shl    esi,2
	add    esi,tex_points
	push   dword[esi]
	movzx  esi,[point_index2]
	shl    esi,2
	add    esi,tex_points
;       lea    esi,[esi*3]
;       lea    esi,[points+2+esi*2]
	push   dword[esi]
  ;     push   dword[xx2]
	movzx  esi,[point_index1]
	shl    esi,2
	add    esi,tex_points
;       lea     esi,[esi*3]
;       lea     esi,[points+2+esi*2]
	push   dword[esi]
   ;    push     dword[xx1]

	mov	eax,dword[xx1]
	ror	eax,16
	mov	ebx,dword[xx2]
	ror	ebx,16
	mov	ecx,dword[xx3]
	ror	ecx,16
	mov	edi,screen
	mov	esi,envmap
	mov	edx,bumpmap	       ;BUMP_MAPPING

	cmp	[catmull_flag],0
	je	@f
	call	bump_triangle_z
	jmp	.end_draw
      @@:
	call	bump_triangle

      .end_draw:
	pop	esi
	add	esi,6
	cmp	dword[esi],-1
	jne	.again_dts
ret
translate_points:
;        fninit
;        mov     ebx,points_rotated
;    again_trans:
;        fild    word[ebx+4] ;z1
;        fmul    [sq]
;        fld     st
;        fiadd   word[ebx]  ;x1
;        fistp   word[ebx]
;        fchs
;        fiadd   word[ebx+2] ;y1
;        fistp   word[ebx+2] ;y1

;        add     ebx,6
;        cmp     dword[ebx],-1
;        jne     again_trans
;ret
translate_perspective_points: ;translate points from 3d to 2d using
	fninit		      ;perspective equations
	mov ebx,points_rotated
      .again_trans:
	fild word[ebx]
	fisub [xobs]
	fimul [zobs]
	fild word[ebx+4]
	fisub [zobs]
	fdivp
	fiadd [xobs]
	fistp word[ebx]
	fild word[ebx+2]
	fisub [yobs]
	fimul [zobs]
	fild word[ebx+4]
	fisub [zobs]
	fdivp
	fchs
	fiadd [yobs]
	fistp word[ebx+2]
	add ebx,6
	cmp dword[ebx],-1
	jne .again_trans
ret


copy_points:
	mov	esi,points
	mov	edi,points_rotated
	mov	ecx,points_count*3+2
	rep	movsw
ret



read_from_file:
	mov	edi,triangles
	xor	ebx,ebx
	xor	ebp,ebp
	mov	esi,SourceFile
	cmp	[esi],word 4D4Dh
	jne	.exit ;Must be legal .3DS file
	cmp	dword[esi+2],EndFile-SourceFile
	jne	.exit ;This must tell the length
	add	esi,6
      @@:
	cmp	[esi],word 3D3Dh
	je	@f
	add	esi,[esi+2]
	jmp	@b
      @@:
	add	esi,6
      .find4k:
	cmp	[esi],word 4000h
	je	@f
	add	esi,[esi+2]
	cmp	esi,EndFile
	jc	.find4k
	jmp	.exit
      @@:
	add	esi,6
      @@:
	cmp	[esi],byte 0
	je	@f
	inc	esi
	jmp	@b
      @@:
	inc	esi
      @@:
	cmp	[esi],word 4100h
	je	@f
	add	esi,[esi+2]
	jmp	@b
      @@:
	add	esi,6
      @@:
	cmp	[esi],word 4110h
	je	@f
	add	esi,[esi+2]
	jmp	@b
      @@:
	movzx	ecx,word[esi+6]
	mov	[points_count_var],cx
	mov	edx,ecx
	add	esi,8
      @@:
	fld	dword[esi+4]
	fmul	[sscale]
	fadd	[xoffset]
	fld	dword[esi+8]
	fchs
	fmul	[sscale]
	fadd	[yoffset]
	fld	dword[esi+0]
	fchs
	fmul	[sscale]
	fistp	word[points+ebx+4]
	fistp	word[points+ebx+2]
	fistp	word[points+ebx+0]
	add	ebx,6
	add	esi,12
	dec	ecx
	jnz	@b
      @@:
	mov	dword[points+ebx],-1
      @@:
	cmp	[esi],word 4120h
	je	@f
	add	esi,[esi+2]
	jmp	@b
      @@:
	movzx	ecx,word[esi+6]
	mov	[triangles_count_var],cx
	add	esi,8
	;mov     edi,triangles
      @@:
	movsd
	movsw
	add	word[edi-6],bp
	add	word[edi-4],bp
	add	word[edi-2],bp
	add	esi,2
	dec	ecx
	jnz	@b
	add	ebp,edx
	jmp	.find4k

      .exit:
	mov	dword[edi],-1
ret


;   *********************************************
;   *******  WINDOW DEFINITIONS AND DRAW ********
;   *********************************************
draw_window:

	mov	eax,12		; function 12:tell os about windowdraw
	mov	ebx,1		; 1, start of draw
	int	0x40

	; SKIN WIDTH
	mov  eax,48
	mov  ebx,4
	int  0x40
	mov  esi, eax
	
	; DRAW WINDOW
    mov  eax,0                     ; function 0 : define and draw window
    mov  ebx,100*65536+SIZE_X+9+80         ; [x start] *65536 + [x size]
    mov  ecx,100*65536+SIZE_Y+4         ; [y start] *65536 + [y size]
	add  ecx, esi
	mov  edx,0x74000000 	  	   ; color of work area RRGGBB,8->color gl
    mov  edi,labelt
	int  0x40
	
	; BLACK BAR
	mov	eax,13		; function 8 : define and draw button
	mov	ebx,SIZE_X*65536+80     ; [x start] *65536 + [x size]
	mov	ecx,0*65536+SIZE_Y  ; [y start] *65536 + [y size]
	mov	edx,0		; color RRGGBB
	int	0x40	

	; ROTARY BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10)*65536+62     ; [x start] *65536 + [x size]
	mov	ecx,25*65536+12  ; [y start] *65536 + [y size]
	mov	edx,2		; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	; ROTARY  LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+28   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelrot	  ; pointer to text beginning
	mov	esi,labelrotend-labelrot     ; text length
	int	0x40

	; DRAW MODE BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10)*65536+62     ; [x start] *65536 + [x size]
	mov	ecx,(25+15)*65536+12  ; [y start] *65536 + [y size]
	mov	edx,3		; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	 ; DRAW MODE LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+28+15   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labeldrmod	    ; pointer to text beginning
	mov	esi,labeldrmodend-labeldrmod	 ; text length
	int	0x40

	 ; SPEED BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10)*65536+62     ; [x start] *65536 + [x size]
	mov	ecx,(25+15*2)*65536+12	; [y start] *65536 + [y size]
	mov	edx,4		; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	 ; SPEED MODE LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*2)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelspeedmod      ; pointer to text beginning
	mov	esi,labelspeedmodend-labelspeedmod     ; text length
	int	0x40

	 ; SCALE- BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10)*65536+62     ; [x start] *65536 + [x size]
	mov	ecx,(25+15*3)*65536+12	; [y start] *65536 + [y size]
	mov	edx,5		; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	 ; SCALE- MODE LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*3)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelzoomout      ; pointer to text beginning
	mov	esi,labelzoomoutend-labelzoomout     ; text length
	int	0x40

	 ; SCALE+ BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10)*65536+62     ; [x start] *65536 + [x size]
	mov	ecx,(25+15*4)*65536+12	; [y start] *65536 + [y size]
	mov	edx,6		; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	 ; SCALE+ MODE LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*4)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelzoomin      ; pointer to text beginning
	mov	esi,labelzoominend-labelzoomin	   ; text length
	int	0x40
	; ADD VECTOR LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*5)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelvector      ; pointer to text beginning
	mov	esi,labelvectorend-labelvector	   ; text length
	int	0x40
	 ; VECTOR Y- BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10+20)*65536+62-42	   ; [x start] *65536 + [x size]
	mov	ecx,(25+15*6)*65536+12	; [y start] *65536 + [y size]
	mov	edx,7		; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;VECTOR Y- LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12+20)*65536+(28+15*6)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelyminus      ; pointer to text beginning
	mov	esi,labelyminusend-labelyminus	   ; text length
	int	0x40
	; VECTOR Z+ BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10+41)*65536+62-41	   ; [x start] *65536 + [x size]
	mov	ecx,(25+15*6)*65536+12	; [y start] *65536 + [y size]
	mov	edx,8		; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;VECTOR Z+ LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12+41)*65536+(28+15*6)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelzplus	    ; pointer to text beginning
	mov	esi,labelzplusend-labelzplus	 ; text length
	int	0x40
	; VECTOR x- BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10)*65536+62-41	; [x start] *65536 + [x size]
	mov	ecx,(25+15*7)*65536+12	; [y start] *65536 + [y size]
	mov	edx,9		; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;VECTOR x- LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*7)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelxminus      ; pointer to text beginning
	mov	esi,labelxminusend-labelxminus	   ; text length
	int	0x40
	; VECTOR x+ BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10+41)*65536+62-41	   ; [x start] *65536 + [x size]
	mov	ecx,(25+15*7)*65536+12	; [y start] *65536 + [y size]
	mov	edx,10		 ; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;VECTOR x+ LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12+41)*65536+(28+15*7)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelxplus	    ; pointer to text beginning
	mov	esi,labelxplusend-labelxplus	 ; text length
	int	0x40
	; VECTOR z- BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10)*65536+62-41	; [x start] *65536 + [x size]
	mov	ecx,(25+15*8)*65536+12	; [y start] *65536 + [y size]
	mov	edx,11		 ; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;VECTOR z- LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*8)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelzminus      ; pointer to text beginning
	mov	esi,labelzminusend-labelzminus	   ; text length
	int	0x40
       ;VECTOR Y+ BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10+20)*65536+62-42	   ; [x start] *65536 + [x size]
	mov	ecx,(25+15*8)*65536+12	; [y start] *65536 + [y size]
	mov	edx,12		 ; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;VECTOR Y+ LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12+20)*65536+(28+15*8)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelyplus	    ; pointer to text beginning
	mov	esi,labelyplusend-labelyplus	 ; text length
	int	0x40
	; LEAD COLOR LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*9)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelmaincolor	; pointer to text beginning
	mov	esi,labelmaincolorend-labelmaincolor	 ; text length
	int	0x40

	;RED+ BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10)*65536+62-41	; [x start] *65536 + [x size]
	mov	ecx,(25+15*10)*65536+12  ; [y start] *65536 + [y size]
	mov	edx,13		 ; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;RED+  LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*10)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelredplus      ; pointer to text beginning
	mov	esi,labelredplusend-labelredplus     ; text length
	int	0x40
	;GREEN+ BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10+20)*65536+62-42	   ; [x start] *65536 + [x size]
	mov	ecx,(25+15*10)*65536+12  ; [y start] *65536 + [y size]
	mov	edx,14		 ; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;GREEN+ LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12+20)*65536+(28+15*10)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelgreenplus	; pointer to text beginning
	mov	esi,labelgreenplusend-labelgreenplus	 ; text length
	int	0x40
	;BLUE+ BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10+41)*65536+62-41	   ; [x start] *65536 + [x size]
	mov	ecx,(25+15*10)*65536+12  ; [y start] *65536 + [y size]
	mov	edx,15		 ; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;BLUE+ LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12+41)*65536+(28+15*10)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelblueplus      ; pointer to text beginning
	mov	esi,labelblueplusend-labelblueplus     ; text length
	int	0x40
	;RED- BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10)*65536+62-41	; [x start] *65536 + [x size]
	mov	ecx,(25+15*11)*65536+12  ; [y start] *65536 + [y size]
	mov	edx,16		 ; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;RED-  LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*11)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelredminus      ; pointer to text beginning
	mov	esi,labelredminusend-labelredminus     ; text length
	int	0x40
	;GREEN- BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10+20)*65536+62-42	   ; [x start] *65536 + [x size]
	mov	ecx,(25+15*11)*65536+12  ; [y start] *65536 + [y size]
	mov	edx,17		 ; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;GREEN- LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12+20)*65536+(28+15*11)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelgreenminus	 ; pointer to text beginning
	mov	esi,labelgreenminusend-labelgreenminus	   ; text length
	int	0x40
	;BLUE- BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10+41)*65536+62-41	   ; [x start] *65536 + [x size]
	mov	ecx,(25+15*11)*65536+12  ; [y start] *65536 + [y size]
	mov	edx,18		 ; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	;BLUE- LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12+41)*65536+(28+15*11)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelblueminus	; pointer to text beginning
	mov	esi,labelblueminusend-labelblueminus	 ; text length
	int	0x40
	; Catmull  LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*12)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelcatmullmod	 ; pointer to text beginning
	mov	esi,labelcatmullmodend-labelcatmullmod	   ; text length
	int	0x40
	; on/off BUTTON
	mov	eax,8		; function 8 : define and draw button
	mov	ebx,(SIZE_X+10)*65536+62     ; [x start] *65536 + [x size]
	mov	ecx,(25+15*13)*65536+12  ; [y start] *65536 + [y size]
	mov	edx,19		 ; button id
	mov	esi,0x6688dd	; button color RRGGBB
	int	0x40
	 ; on/off LABEL
	mov	eax,4		; function 4 : write text to window
	mov	ebx,(SIZE_X+12)*65536+(28+15*13)   ; [x start] *65536 + [y start]
	mov	ecx,0x20ddeeff	; font 1 & color ( 0xF0RRGGBB )
	mov	edx,labelonoff	    ; pointer to text beginning
	mov	esi,labelonoffend-labelonoff	 ; text length
	int	0x40


	mov	eax,12		; function 12:tell os about windowdraw
	mov	ebx,2		; 2, end of draw
	int	0x40

	ret


	; DATA AREA
	i3		dw	3
	light_vector	dd	0.0,0.0,-1.0
     ;  debug_vector    dd      0.0,2.0,2.0   ;--debug
     ;  debug_vector1   dd      0.0,0.0,0.0
     ;  debug_points    dw      1,1,1,3,4,20
     ;  debug_dd        dw      ?
     ;  debug_dwd       dd      65535
     ;  debug_counter   dw      0
	dot_max 	dd	1.0	 ; dot product max and min
	dot_min 	dd	0.0
	env_const	dd	1.2
	correct_tex	dw	255
	max_color_r	dw	255
	max_color_g	dw	25
	max_color_b	dw	35
	xobs		dw	SIZE_X / 2 ;200 ;observer
	yobs		dw	SIZE_Y / 2 ;200 ;coordinates
	zobs		dw	-500


	angle_counter dw 0
	piD180	      dd 0.017453292519943295769236907684886
      ;  sq            dd 0.70710678118654752440084436210485
	const6	      dw 6,6,6,6
	xo	      dw 150;87  ; rotary point coodinates
	zo	      dw 0
	yo	      dw 100
	xoffset       dd 150.0
	yoffset       dd 170.0
	sscale	      dd 8.0		 ; real scale
	vect_x	      dw 0
	vect_y	      dw 0
	vect_z	      dw 0


	r_flag	      db 0	 ; rotary flag
	dr_flag       db 2	 ; drawing mode flag
	speed_flag    db 0
	catmull_flag  db 1
    SourceFile file 'hrt.3ds'
    EndFile:
    labelrot:
	db   'rotary'
    labelrotend:
    labeldrmod:
	db   'shd. mode'
    labeldrmodend:
    labelspeedmod:
	db   'speed'
    labelspeedmodend:
    labelzoomout:
	db   'zoom out'
    labelzoomoutend:
    labelzoomin:
	db   'zoom in'
    labelzoominend:
    labelvector:
	db   'add vector'
    labelvectorend:
    labelyminus:
	db   'y -'
    labelyminusend:
    labelzplus:
	db   'z +'
    labelzplusend:
    labelxminus:
	db   'x -'
    labelxminusend:
    labelxplus:
	db   'x +'
    labelxplusend:
    labelzminus:
	db   'z -'
    labelzminusend:
    labelyplus:
	db   'y +'
    labelyplusend:
    labelmaincolor:
	db   'main color'
    labelmaincolorend:
    labelredplus:
	db   'r +'
    labelredplusend:
    labelgreenplus:
	db   'g +'
    labelgreenplusend:
    labelblueplus:
	db   'b +'
    labelblueplusend:
    labelredminus:
	db   'r -'
    labelredminusend:
    labelgreenminus:
	db   'g -'
    labelgreenminusend:
    labelblueminus:
	db   'b -'
    labelblueminusend:
    labelcatmullmod:
	db 'catmull'
    labelcatmullmodend:
    labelonoff:
	db 'on/off'
    labelonoffend:
    labelt:
	db   '3D Heart',0
align 8
	@col	dd	?
	@y1	dw	?
	@x1	dw	?;+8
	@y2	dw	?
	@x2	dw	?
	@y3	dw	?
	@x3	dw	?;+16

	@dx12	dd	?
	@dx13	dd	?;+24
	@dx23	dd	?

	sinbeta dd	?;+32
	cosbeta dd	?

	xsub	dw	?
	zsub	dw	?;+40
	ysub	dw	?

	xx1	dw	?
	yy1	dw	?
	zz1	dw	?;+48
	xx2	dw	?
	yy2	dw	?
	zz2	dw	?
	xx3	dw	?;+56
	yy3	dw	?
	zz3	dw	?
	scale	dd	?		  ; help scale variable
	;screen  dd      ?                ;pointer to screen buffer
	triangles_count_var dw ?
	points_count_var    dw ?


	point_index1	    dw ?   ;-\
	point_index2	    dw ?   ;  }  don't change order
	point_index3	    dw ?   ;-/
	temp_col	    dw ?
	high	dd	?
align 8
	buffer	dq	?

	;err	dd	?
	drr	dd	?
	xx	dd	?
	yy	dd	?
	xst	dd	?
	yst	dd	?
align 16
    points:
	rw (EndFile-SourceFile)/12*3
	points_count = ($-points)/6
    triangles:
	rw (EndFile-SourceFile)/12*3
	triangles_count = ($-triangles)/6

align 16
	points_rotated rw points_count*3 + 2
align 16
	label trizdd dword
	label trizdq qword
	triangles_with_z rw triangles_count*4 + 2 ; triangles triple dw + z position
align 16
	triangles_normals rb triangles_count * 12 ;
	point_normals rb points_count * 12  ;one 3dvector - triple float dword x,y,z
align 16
	point_normals_rotated rb points_count * 12
align 16
	vectors rb 24
	points_color rb 6*points_count	  ; each color as word
;        sorted_triangles rw triangles_count*3 + 2
;align 16
	bumpmap 	rb	TEXTURE_SIZE + 1
	envmap		rb	(TEXTURE_SIZE +1) * 3
	tex_points	rb	points_count * 4  ; bump_map points
				; each point word x, word y
	screen		rb	SIZE_X * SIZE_Y * 3   ; screen buffer
	Z_buffer	rb	SIZE_X * SIZE_Y * 4
	memStack rb 1000 ;memory area for stack
    I_END: