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kolibrios/programs/media/voxel_editor/trunk/vox_rotate.inc

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'voxel_editor': fix and update rotation functions git-svn-id: svn://kolibrios.org@3969 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-10-03 20:47:46 +02:00
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; 4
; 5 6
; | 7 |
; | 0 |
; 1 2
; 3
; <EFBFBD><EFBFBD><EFBFBD>:
; 0-1 <EFBFBD><EFBFBD><EFBFBD> x
; 0-2 <EFBFBD><EFBFBD><EFBFBD> y
; 0-4 <EFBFBD><EFBFBD><EFBFBD> z
; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> z
align 4
proc vox_obj_rot_z uses eax ebx ecx, v_obj:dword
mov ebx,[v_obj]
add ebx,vox_offs_tree_table
;(1)
call vox_tbl_copy
;(2)
;0 -> 1 4 -> 5
;^ | ^ |
;2 <- 3 6 <- 7
mov edx,dword[eax]
mov byte[eax+1],dl ;0->1
mov byte[eax+3],dh ;1->3
shr edx,16
mov byte[eax],dl ;2->0
mov byte[eax+2],dh ;3->2
mov edx,dword[eax+4]
mov byte[eax+5],dl ;4->5
mov byte[eax+7],dh ;5->7
shr edx,16
mov byte[eax+4],dl ;6->4
mov byte[eax+6],dh ;7->6
;(3)
call vox_tbl_paste
ret
endp
; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> y
align 4
proc vox_obj_rot_y uses eax ebx ecx, v_obj:dword
mov ebx,[v_obj]
add ebx,vox_offs_tree_table
;(1)
call vox_tbl_copy
;(2)
;0 -> 4 1 -> 5
;^ | ^ |
;2 <- 6 3 <- 7
mov edx,dword[eax]
mov ecx,dword[eax+4]
mov byte[eax+4],dl ;0->4
mov byte[eax+5],dh ;1->5
shr edx,16
mov byte[eax+0],dl ;2->0
mov byte[eax+1],dh ;3->1
mov byte[eax+6],cl ;4->6
mov byte[eax+7],ch ;5->7
shr ecx,16
mov byte[eax+2],cl ;6->2
mov byte[eax+3],ch ;7->3
;(3)
call vox_tbl_paste
ret
endp
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align 4
proc vox_obj_rot_x uses eax ebx ecx, v_obj:dword
mov ebx,[v_obj]
add ebx,vox_offs_tree_table
;(1)
call vox_tbl_copy
;(2)
;0 -> 4 2 -> 6
;^ | ^ |
;1 <- 5 3 <- 7
mov edx,dword[eax]
mov ecx,dword[eax+4]
mov byte[eax+4],dl ;0->4
mov byte[eax+0],dh ;1->0
shr edx,16
mov byte[eax+6],dl ;2->6
mov byte[eax+2],dh ;3->2
mov byte[eax+5],cl ;4->5
mov byte[eax+1],ch ;5->1
shr ecx,16
mov byte[eax+7],cl ;6->7
mov byte[eax+3],ch ;7->3
;(3)
call vox_tbl_paste
ret
endp
;input:
; ebx = vox_offs_tree_table
align 4
vox_tbl_copy:
;(1)
mov eax,txt_buf
movzx ecx,byte[ebx]
add ecx,eax
mov byte[ecx],0
movzx ecx,byte[ebx+1]
add ecx,eax
mov byte[ecx],1
movzx ecx,byte[ebx+2]
add ecx,eax
mov byte[ecx],2
movzx ecx,byte[ebx+3]
add ecx,eax
mov byte[ecx],3
movzx ecx,byte[ebx+4]
add ecx,eax
mov byte[ecx],4
movzx ecx,byte[ebx+5]
add ecx,eax
mov byte[ecx],5
movzx ecx,byte[ebx+6]
add ecx,eax
mov byte[ecx],6
movzx ecx,byte[ebx+7]
add ecx,eax
mov byte[ecx],7
ret
;input:
; ebx = vox_offs_tree_table
align 4
vox_tbl_paste:
movzx ecx,byte[eax]
add ecx,ebx
mov byte[ecx],0
movzx ecx,byte[eax+1]
add ecx,ebx
mov byte[ecx],1
movzx ecx,byte[eax+2]
add ecx,ebx
mov byte[ecx],2
movzx ecx,byte[eax+3]
add ecx,ebx
mov byte[ecx],3
movzx ecx,byte[eax+4]
add ecx,ebx
mov byte[ecx],4
movzx ecx,byte[eax+5]
add ecx,ebx
mov byte[ecx],5
movzx ecx,byte[eax+6]
add ecx,ebx
mov byte[ecx],6
movzx ecx,byte[eax+7]
add ecx,ebx
mov byte[ecx],7
ret
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