Orthographic Points

7/24/2019 Orthographic Points

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NOTATIONS

FOLLOWING NOTATIONS SHOULD BE FOLLOWED WHILE NAMEING

DIFFERENT VIEWS IN ORTHOGRAPHIC PROJECTIONS.

ITS FRONT VIEW a a b

OBJECT POINT A LINE AB

ITS TOP VIEW a a b

ITS SIDE VIEW aa b


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X

Y

1STQuad.!d Quad.

"#d Quad. $%&Quad.

X Y

VP

HP

Ob'(#)

THIS QUADRANT PATTERN*IF OBSERVED ALONG +,- LINE IN REDARROW DIRECTION/WILL E+ACTL- APPEAR AS SHOWN ON RIGHT SIDE AND HENC

IT IS FURTHER USED TO UNDERSTAND ILLUSTRATION PROPER


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HP

VP

a

a

A

POINT A IN1STQUADRANT

OBSERVER

VP

HP

POINT A INNDQUADRANT

OBSERVER

a

a

A

OBSERVER

a

a

POINT A IN"RD QUADRANT

HP

VP

A

OBSERVER

a

aPOINT A IN$TH QUADRANT

HP

VP

A

0!% A '2a3(d I!4(#(!%uad#a!%'!d %' F) 6)#( b#0u7&% !

a8( 92a!( :0#b'(#)(# %0((

2(a#2;.) ' )'b2( a'% ' a )(< 0!P. Bu% a' T)

' a )(< 0!

9*% ' #0%a%(d0>*! 3203?


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PROJECTIONS OF A POINT IN THE 4 QUADRANTS

HP

VP

POINT IN !dQUADRANT

V

P

HP

PT

PF

HP

V

POINT IN "#dQUADRANT

HP

V

POINT IN $%&QUADRANT

VP

VP

HP

HP

PT TOP VIEW

PF FRONT

VIEW

PF

PT

PF

HP

VP

POINT IN 1'%QUADRANT

V

P

HP

PT

PF

PT

P

P

P

P


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H0< ;0u


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6

A

a

aA

a

a

Aa

a

X

Y

X

Y

X

YForFv

For Tv

ForFv

For Tv

For Tv

ForFv

POINT A ABOVE HP6 INFRONT OF VP

POINT AIN HP6 INFRONT OF VP

POINT AABOVE HP6 IN VP

PROJECTIONS OF A POINT IN FIRST QUADRANT.

ORTHOGRAPHIC PRESENTATIONSOF ALL ABOVE CASES.

X Y

a

a

VP

HP

X Y

a

VP

HP

a X Y

a

VP

HP

a

Fv above xy,Tv below xy.

Fv above xy,Tv on xy.

Fv on xy,Tv below xy.


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P#0(3%0! 0: 2!('* 92a!('*'02d'

Line consiss o! "#oins

P$ane consiss o! %o& 'o&e #oins

So$i( consiss o! 'o&e )an %#oins

T)e&e!o&e in o&(e& o #&o*ec $ines+

#$anes an( so$i(s+ ,e nee( o #&o*ec)ei& co&&es#on(in- #oinsan( *oin)e'


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SIMPLE CASES OF THE LINE

1. A VERTICAL LINE LINE PERPENDICULAR TO HP 6 TO VP

. LINE PARALLEL TO BOTH HP 6 VP.

". LINE INCLINED TO HP 6 PARALLEL TO VP.

$. LINE INCLINED TO VP 6 PARALLEL TO HP.

. LINE INCLINED TO BOTH HP 6 VP.

PROJECTIONS OF STRAIGHT LINES.

AIM, TO DRAW ITS PROJECTIONS , FV 6 TV.

INFORMATION REGARDING ALINEITS LENGTH*POSITION OF ITS ENDS WITH HP6 VPITS INCLINATIONS WITH HP 6 VP


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X

Y

V.P.

X

Y

V.P. b

a

b

a

F.V.

T.V.

a b

a

b

B

A

TV

FV

A

B

X Y

H.P.

V.P.a

b

a b

Fv

Tv

X Y

H.P.

V.P.

a b

a bFv

Tv

Fo&F.

Fo& T.

Fo& T.

Fo&F.

N0%(F. is a .e&ica$ $ineS)o,in- T&/e Len-)0

T. is a #oin1

N0%(F. 0 T. 2o) a&e33 o 502o) s)o, T1 L1

1.

2.

A Line#een(ic/$a&o H#033 o V#

A Line

33 o H#033 o V#

Orthographic Pattern

Orthographic Pattern

P3%0#a2 P#('(!%a%0!/

P3%0#a2 P#('(!%a%0!/


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A Line inc$ine( o H#

an(#a&a$$e$ o V#

P3%0#a2 9#('(!%a%0!/X

Y

V.P.

A

B

b

a

b

a

F.V.

T.V.

A Line inc$ine( o V#

an(#a&a$$e$ o H#

P3%0#a2 9#('(!%a%0!/

V.P.

a b

a

b

BA

F.V.

T.V.

X Y

H.P.

V.P.

F.V.

T.V.a b

a

b

X Y

H.P.

V.P.

a

b

a b

Tv

Fv

Tv inclined to xy

Fv parallel to xy.

3.

4.

Fv inclined to xy

Tv parallel to xy.

O#%&07#a9&3 P#0(3%0!'

T#u(L(!7%&

T#u(L(!7%&


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X

Y

V.P.

ForFv

a

b

a b

B

A

For Tv

F

.V.

T.V.

X

Y

V.P.

a

b

a b

F.V.

T.V.

ForFv

For Tv

B

A

X Y

H.P.

V.P.

a

b

FV

TV

a

b

A Line inc$ine( o 2o)H# an( V#

6Pico&ia$ #&esenaion7

5.

N0%( T&('( Fa3%',B0%& F) 6 T) a#( !32!(d %0@;.6No .ie, is #a&a$$e$ o 57B0%& F) 6 T) a#( #(du3(d2(!7%&'1

6No .ie, s)o,s T&/e Len-)7

O#%&07#a9&3 P#0(3%0!'F. is seen on V# c$ea&$51

To see Tv clearly, HPis rotated 900downwards,Hence i co'es 2e$o, 51

O! #(80)a2 0: 0b(3%.(. L!( ABF. as a i'a-e on V#1

T. as a i'a-e on H#+

:an( a&eNOT )e &/e an-$es6inc$inaions7o! )e

$ine ,i) )e #$anes


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PROJECTIONS OF PLANES

I!:0#8a%0! u'ua22; 7)(!1. S&a9(0: %&( 92a!(

. I!32!a%0! 0: %''u#:a3(


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a 1

b 1

c 1

d 1

V!V!

a

dc

b

V!

a dcb

ForFv

ForTv

ForF.V.

ForT.V.

ForT.V.

ForF.V.

!

a

b c

d

a1

d1 c1

b1

!

a1

b1 c1

d1

CASE OF A RECTANGLE OBSERVE AND NOTE ALL STEPS.

SURFACE PARALLELTO HPPICTORIAL PRESENTATION

SURFACE INCLINEDTO HPPICTORIAL PRESENTATION

ONE SMALL SIDE INCLINEDTOPICTORIAL PRESENTATION

ORTHOGRAPHICTV9T&/e S)a#e FV9 Line 33 o 5

ORTHOGRAPHICFV9 Inc$ine( o XY

TV9 Re(/ce( S)a#e

ORTHOGRAPHICFV9 A##a&en S)a#e

TV9P&e.io/s S)a#e

A B C


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Cene& $ines

D&a,n o in(icae )e ais o! c5$in(&ica$+ conica$ o&s#)e&ica$ o2*ecs o& (eai$s1

T)in $on- c)ains co'#ose( o! a$e&nae$5 $on- an(

s)o& (as)es1

Lon-e& (as)es a&e a##&oi'ae$5 : o ; i'es )es)o& (as)es in $en-)1

Cene& o! a ci&c/$a& c/&.e is in(icae( 25 a c&oss'a(e /# o! cene&$ine c)ains1

84


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Orthographic Points

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