1rz13mca08 Cg report

8/10/2019 1rz13mca08 Cg report

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Computer Graphics Project 2014

I. Synopsis

Introduction

1. Generate a graph to analyze the up and downs of a share market

using DDA algorithis about taking the data and showing it in chart type.

Advantage o chart is that it wi!! be easy to understand the data dierences

which is given by the user in terms o numbers" he can compare it with

previous data in chart" he can see the whether there is

improvement#deterioration over the time. Chart is used because it is a

graphica! representation o data" where the data is represented as co!umns.

Charts are oten used to ease understanding o !arge $uantities o data and

the re!ationships between parts o the data. Charts can usua!!y be read

more $uick!y than the raw data that they are produced rom. %hey are used

in a wide variety o ie!ds" and can be created by hand &oten on graph

paper' or by computer using a charting app!ication .%hese options are

imp!emented using ((A !ine a!gorithm.

2. Developement of 2D e!t screen saver with " #otation and

ranslation .A screensaver &or screen saver' is a computer program that

b!anks the screen or i!!s it with moving images or patterns when the

computer is not in use. A screen saver a!so an animated image that is

activated on a persona! computer disp!ay when no user activity has been

sensed or a certain time or sometimes a user himse! makes the screen

saver to run or some time .)n this app!ication test input is trans!ated and

rotated as the screen saver app!ication.

(ept.o *CA" +,C- Page o.1


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II. Design Specification

(esign /peciication provides ep!icit inormation about the re$uirements or the

project and how the project has been imp!emented. )t is used to design document that

describes a!! data" architectura!" interace and component!eve! design or the

sotware.

1. Generate a graph to analyze the up and downs of a share market using

DDA algorith

((A a!gorithm is used to design the chart" when the user provides data" the

irst data is taken and the !ine is drawn or that data" same unctiona!ity is

carried out or rest o the data provided by the user. ((A !ine a!gorithm is

ca!!ed or n times" n is the number o times given by the user to draw co!umns

with n number o datas.

DDA line Algorithm

((A 3ine & 1" 51" " 5'6

(escription6 7ere 1 and 51 denote the starting 8 coordinate and y 8

coordinate o the !ine

and and 5 denote the ending 8 coordinate and y 8 coordinate.

1. /et * 9 &5 8 51' # & 8 1' :Ca!cu!ate s!ope o !ine;

2. +epeat 9 1' %hen

4. /et ( 9 1

?. /et (5 9 * @ (

. -!se

B. /et (5 9 1

. /et ( 9 (5 # *

:-nd o );

D. /et 1 9 1 E (

10. /et 51 9 51 E (5

11. Ca!! PutPie!&1" 51'

:-nd o


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Steps to Design $ and % a!is

Programmer has to give " y and F coordinates or two !ines.

((A !ine unction has to be ca!!ed or two times with the given

coordinates.

%his is a predeined !ine" so programmer has set the "y and F co

ordinates and two !ines has been drawn.

Steps to Design a chart

ser irst has to insert the number o co!umns he want that is Hn.

%hen user has to enter data or n number times.


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Advantages o ((A A!gorithm

1. )t is the simp!est a!gorithm and it does not re$uire specia! ski!!s or imp!ementation.

2. )t is a aster method or ca!cu!ating pie! positions than the direct use o e$uation y

9 m E b. )t e!iminates the mu!tip!ication in the e$uation by making use o rastercharacteristics" so that appropriate increments are app!ied in the or v direction to

ind the pie! positions a!ong the !ine path.

2. Developement of 2D e!t screen saver with " #otation and ranslationin

this the users tet is ca!!ed at a speciied positions and the co!or o the tet is

set .Ca!!ing the users tet with trans!ation"rotation and de!ay makes this

specia! and gives the screen saver eects.

Steps to Design te!t

ser has to give a tet which is stored in array.

%he tet rendered onto screen using coordinates speciied by user.

%he tet is i!!ed with dierent co!ours.

Steps to call te!t

%he coordinates and y are app!ied.

%he coordinates are passed to the drawstring unction which draws the

tet on to screen using g!utNitmapChar&' unction.

Delay function

(e!ay unction is used to keep some de!ay between ca!!ing the tet

again" so that it makes eect o screen saver.

)nitia!iFe i 90M +epeat unti! i >9 2000000M )ncrement i by 1.

Applying rotation

g!+otate&ang!e" 0.0" 0.0" 1.0'M

Applying translation

g!%rans!ate&B?0" 0" 0'M



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III. Graphical 'eatures

1. Generate a graph to analyze the up and downs of a share market using

DDA algorith

(ierent +GN co!ors has been set g!Co!or=&1.0"0.0"0.0' to G3OPL)%/ to

make co!umns co!oru!.

Gradient eect6 Gradient eect has been imp!emented with G3O3)-

unction bygiving dierent va!ues to g!co!or or each verte in po!ygon gives

the gradient eect.

%he tet on the graphica! window is drawn with the he!p g!utNitmapCharacter.

(ist of )penG( functions incorporated in this pro*ect is as follows

g!C!ear&G3OCL3L+ON

g!%rans!ate&B?0" 0" 0'M

!en 9 &int' str!en&message'M

or &i 9 0M i > !enM iEE' Q



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g!ut/trokeCharacter&ont" message:i;'M

Delay & (e!ay unction is imp!emented to suspend the eecution o a program or a

particu!ar time. 7ere unsigned int is the number o mi!!iseconds & 1 second 9 1000

mi!!iseconds '.

void de!ay&'

Q

or& int i 9 0M i >9 2000000M iEE'

R

Graphic (i+rary

Sinc!ude >G3#g!ut.hK Necause a very !arge window system sotware vendor

&who wi!! remain name!ess' has an apparent inabi!ity to appreciate that

LpenG3Ts AP) is independent o their window system AP)" portab!e A/) C

G3% programs shou!d not direct!y inc!ude >G3#g!.hK or >G3#g!u.hK.

)nstead" A/) C G3% programs shou!d re!y on >G3#g!ut.hK to inc!ude the

necessary LpenG3 and G3 re!ated header i!es.

%he A/) C G3% !ibrary archive is typica!!y named !ibg!ut.a on ni

systems. G3% programs need to !ink with the systemTs LpenG3 and G3%

!ibraries &and any !ibraries these !ibraries potentia!!y depend on'.

A set o window system dependent !ibraries may a!so be necessary or !inking

G3% programs.


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returns a uni$ue identiier or the new window. %his unction sends the re$uest or

new window to be constructed.

gl4erte! &%he main unction &and probab!y the most used LpenG3 unction' is

unction named g!,erte. %his unction deines a point &or a verte' in your =( wor!d

and it can vary rom receiving 2 up to 4 coordinates.

g!,erte2&100.0" 1?0.0'M deines a point at 9 100" y 9 1?0" F 9 0M this unction

takes on!y 2 parameters" F is a!ways 0. g!,erte2 can be used in specia! cases and

wonTt be used a !ot un!ess youTre working with pseudo2( sprites or triang!es and

points that a!ways have to be constrained by the depth coordinate.

g!,erte=&100.0" 1?0.0" 2?.0'M deines a point at 9 100" y 9 1?0" F 9 2?.0M

this unction takes = parameters" deining a u!!y =( point in your wor!d.

g!,erte4&100.0" 1?0.0" 2?.0" 1.0'M this is the same as g!,erte=" the on!y

dierence is in the !ast coordinate that speciies a sca!ing actor. %he sca!ing actor is

set to 1.0 by deau!t. )t can be used to make your =( points !ook thicker than one

pie!.

gl5egin and gl6nd &g!,erte a!one wonTt draw anything on the screen" it mere!y

deines a verte" usua!!y o a more comp!e object. %o rea!!y start disp!aying

something on the screen you wi!! have to use two additiona! unctions. %hese

unctions are

g!Negin&int mode'M and g!-nd& void 'M

g!Negin and g!-nd de!imit the vertices o a primitive or a group o !ike primitives.

Ihat this means is that everytime you want to draw a primitive on the screen you wi!!

irst have to ca!! g!Negin" speciying what kind o primitive it is that you want to draw

in the mode parameter o g!Negin" and then !ist a!! vertices one by one &by

se$uentia!!y ca!!ing g!,erte' and ina!!y ca!! g!-nd to !et LpenG3 know that youTre

done drawing a primitive. %he parameter mode o the unction g!Negin can be one o

the o!!owing6

G3OPL)%/

G3O3)-/

G3O3)-O/%+)P



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G3O3)-O3LLP

)penG( 3olor effects&%he goa! o a!most a!! LpenG3 app!ications is to draw co!or

pictures in a window on the screen. %he window is a rectangu!ar array o pie!s" each

o which contains and disp!ays its own co!or. %hus" in a sense" the point o a!! the

ca!cu!ations perormed by an LpenG3 imp!ementation ca!cu!ations that take into

account LpenG3 commands" state inormation" and va!ues o parameters is to

determine the ina! co!or o every pie! thatTs to be drawn in the window. %his chapter

ep!ains the commands or speciying co!ors and how LpenG3 interprets them in the

o!!owing major sections6

UCo!or PerceptionU discusses how the eye perceives co!or.

UComputer Co!orU describes the re!ationship between pie!s on a

computer monitor and their co!orsM it a!so deines the two disp!ay modes" +GNA and

co!or inde.

U+GNA versus Co!or)nde *odeU ep!ains how the two disp!ay modes use

graphics hardware and how to decide which mode to use.

U/peciying a Co!or and a /hading *ode!U describes the LpenG3 commands you

use to speciy the desired co!or or shading mode!.



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2. )77 S3#668

6nter the percentage of progress in 1styear& 19

6nter the percentage of progress in 2ndyear& :;

6nter the percentage of progress in thyear& :9

'igure1& Graph to analyze the up and downs of a share market using DDA

algorith.



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6nter the te!t& ?6(() #436

'igure 2& 2D e!t screen saver with " #otation and ranslation.



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3onclusion

A chart visua!iFes the numeric data in a graphica! ormat.Charts are oten used to ease

understanding o !arge $uantities o data and the re!ationships between parts o the

data. Charts can usua!!y be read more $uick!y than the raw data that they are produced

rom.

%hey are used in a wide variety o ie!ds" and can be created by hand &oten on graph

paper' or by computer using a charting app!ication. Certain types o charts are more

useu! or presenting a given data set than others.


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#eferences

1. (ona!d (. 7earn" * Pau!ine Naker" Iarren Carthers" VComputer Graphics

output primitivesW in Computer Graphics with LpenG3" 4thedition" Pearson"

2014" Chapter =" Page no. 4?.

2. (ona!d (. 7earn" * Pau!ine Naker" Iarren Carthers" VAttributes o Graphics

primitivesW in Computer Graphics with LpenG3" 4thedition" Pearson" 2014"

Chapter 4" Page no. DD.

=. (ona!d (. 7earn" * Pau!ine Naker" Iarren Carthers" V)mp!ementation

A!gorithms or Graphics primitives and attributesW in Computer Graphics with

LpenG3" 4thedition" Pearson" 2014" Chapter ?" Page no. 1=1.



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Source 3ode

@@1.Generate a graph to analyze the up and downs of a share market using DDA

algorith

Sinc!ude>iostreamK

Sinc!ude>cstdioK

Sinc!ude>G3#g!.hK

Sinc!ude>G3#g!u.hK

Sinc!ude>G3#g!ut.hK

Sinc!ude>math.hK

using namespace stdM

void initia!iFe&'M

void disp!ay&'M

void d!&int"int"int"int'M

void i!!&int"int'M

int a:20;"nM

!oat 90.2"e91.0M

int main&int argc"char@@ argv'Q

cout>>Uenter the number o bar chartsXnUM

cinKKnM

cout>>Uenter user va!uesXnUM

or&int i90Mi>nMiEE'

Q

cinKKa:i;M

R

or&int i90Mi>nMiEE'



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Q

a:i;9?0E&a:i;@?'M

R

g!ut)nit&Yargc"argv'M

g!ut)nit(isp!ay*ode&G3%O/)G3-JG3%O+GN'M

g!ut)nitIindow/iFe&D00"D00'M

g!ut)nitIindowPosition&00"00'M

g!utCreateIindow&Uchess boardU'M

g!ut(isp!ay


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Q

or&int i9Mi>E?0MiEE'

d!&i"y"i"yE?0'M

R

void draw/tring1&!oat " !oat y'Q

g!Co!or=&1.0" 0.0" 0.0'M

g!+asterPos2&" y'M

char scoreArr:=00;M

sprint&scoreArr" UProgress in percentageU'M

or &const char@ c9scoreArrM @c Z9 TX0TM cEE'Q

g!utNitmapCharacter&G3%ON)%*APO7-3,-%)CAO12" @c'M ## pdates the

position

R

R

void draw/tring&!oat " !oat y'

Q

g!Co!or=&1.0" 0.0" 0.0'M

g!+asterPos2&" y'M

char scoreArr:=00;M

sprint&scoreArr" U 2010 2011 2012 201= 2014

>work in yearU'M

or &const char@ c9scoreArrM @c Z9 TX0TM cEE'

Q

g!utNitmapCharacter&G3%ON)%*APO7-3,-%)CAO12" @c'M ##

pdates the position



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R

R

void disp!ay&'

Q

int c90M

d!&=0"?0"=0"?B0'M

d!&=0"?0"4?0"?0'M

draw/tring1&B"00'M

draw/tring&20"=0'M

g!+asterPos2i&10"?0'M

g!utNitmapCharacter&G3%ON)%*APO7-3,-%)CAO12"T0T'M


g!+asterPos2i&10"100'M



g!+asterPos2i&10"1?0'M




g!utNitmapCharacter&G3%ON)%*APO7-3,-%)CAO12"T=T'M





g!+asterPos2i&10"=00'M



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g!utNitmapCharacter&G3%ON)%*APO7-3,-%)CAO12"T?T'M


g!+asterPos2i&10"=?0'M

g!utNitmapCharacter&G3%ON)%*APO7-3,-%)CAO12"TT'M



g!utNitmapCharacter&G3%ON)%*APO7-3,-%)CAO12"TBT'M



g!utNitmapCharacter&G3%ON)%*APO7-3,-%)CAO12"TT'M


g!+asterPos2i&10"?00'M

g!utNitmapCharacter&G3%ON)%*APO7-3,-%)CAO12"TDT'M


g!+asterPos2i&10"??0'M




##draw/tring&10.0"4?.0"0.0'M

or&int F90MF>nMFEE'

Q

g!Co!or=&0.?"0.?"'M

or&int i9??Mi>a:F;MiEE'

d!&?0@FE40"i"?0@&FE1'"i'M

9E0.=M



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i&K1'

91M

g!

R

void d!&int 1"int y1"int 2"int y2'

Q

int s"d"dy"mM

!oat i"yi""yM

d921M

dy9y2y1M

i&abs&d'Kabs&dy''

s9abs&d'M

e!se

s9abs&dy'M

i9d#!oat&s'M

yi9dy#!oat&s'M

91M

y9y1M

g!Negin&G3OPL)%/'M

g!,erte2&"y'M

g!-nd&'M

or&m90Mm>sMmEE'

Q



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E9iM

yE9yiM

g!Negin&G3OPL)%/'M

g!,erte2&"y'M

g!-nd&'M

R

R

##2. Develop 2D e!t screen saver with " #otation and ranslation'

Sinc!ude >string.hK

Sinc!ude >G3#g!ut.hK

void @ont 9 G3%ON)%*APO%)*-/O+L*AO24M

void @onts:; 9QG3%O/%+L[-O+L*A" G3%O/%+L[-O*LLO+L*ARM

char deau!t*essage:; 9 Uee!endu /hekharUM

char deau!t*essage1:; 9 U/hekharUM

char @message 9 deau!t*essageM

int ang!e 9 0M

void tick&void'

Q

ang!e 9 ?M

g!utPost+edisp!ay&'M

R

void tick1&void'

Q

ang!e E9 ?M

g!utPost+edisp!ay&'M



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R

void disp!ay&void'

Q

int !en" iM

g!C!ear&G3OCL3L+ON9200000MiEE'

R

int main&int argc" char @@argv'

Q

int i" submenuM

g!ut)nit&Yargc" argv'M

g!ut)nit(isp!ay*ode&G3%O(LN3- J G3%O+GN'M

g!ut)nitIindow/iFe&00" 00'M



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g!utCreateIindow&Utet rotation screen saverU'M

g!*atri*ode&G3OP+L-C%)L'M

g!3oad)dentity&'M

g!uLrtho2(&0" 2000" 0" 2000'M

g!*atri*ode&G3O*L(-3,)-I'M

g!-nab!e&G3O3)-O/*LL%7'M

g!-nab!e&G3ON3-('M

g!N!end

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1rz13mca08 Cg report

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