Lecture Slides on OpenGL Tutorial - Computer Graphics | CISC 640, Study notes of Computer Graphics

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CISC640/440 OpenGL Tutorial

OpenGL Tutorial

CISC 640/440 Computer Graphics

TA: Qi Li/Mani Thomas

[email protected]/[email protected]

CISC640/440 OpenGL Tutorial

Outline

• Submission policy• OpenGL: Basics and setup• Draw geometry primitives• Transformations in OpenGL• Sample codes• Office hour

CISC640/440 OpenGL Tutorial

How to Submit

•^

Tar/zip file– Unix:

> tar -cf lastname_projectNum.tar projectDir> gzip lastname_projectNum.tar

– Windows:

• get a winzip application (if you don't have)• go the directory storing your assignments• right click your mouse to zip the directory

•^

Submit the tar/zip file through the course web(More details will be announced later)

CISC640/440 OpenGL Tutorial

What to Submit

• Must contain

– readme– Makefile– Source codes– Output figures (if any)

• Must NOT contain

– obj intermediate files– obj data files

CISC640/440 OpenGL Tutorial

What to Submit: Makefile for

EECIS

Makefile for EECIS## uncomment the following line for the C compiler(cc)#CC = cc CC = CCTOP = /usr/local/mesa# list the name of the executable you wish to produceexec = hello## list all your object files separated by spacesobjects = hello.o## list all your header files separated by spaces## includes = lines5.h lines5_2.h

LINKDIR = -L$(TOP)/lib -L/usr/openwin/libINCLUDEDIR = $(TOP)/includeLLDLIBS = -lGL -lglut -lMesaGLU -lMesaGL -lm -lX11 -lXext -lXmu \ -lXt -lXi

$(exec) : $(objects)

$(CC) -o $@ $(LINKDIR) $(objects) $(LLDLIBS) $(objects) : $(includes) $(CC) -c -I$(INCLUDEDIR) $<.PHONY : cleanclean: -rm -f $(objects) $(exec)

CISC640/440 OpenGL Tutorial

What to Submit: Makefile for

Composer

Makefile for Composer/Strauss## uncomment the following line for the C compiler(cc)#CC = cc CC = CCTOP = /home/base/usrb/chandrak/640/OpenGL/Mesa-2.6# list the name of the executable you wish to produceexec = hello## list all your object files separated by spacesobjects = hello.o## list all your header files separated by spaces## includes = lines5.h lines5_2.h

LINKDIR = -L$(TOP)/lib -L/usr/openwin/libINCLUDEDIR = $(TOP)/includeLLDLIBS = -lGL -lglut -lMesaGLU -lMesaGL -lm -lX11 -lXext -lXmu \ -lXt -lXi

$(exec) : $(objects)

$(CC) -o $@ $(LINKDIR) $(objects) $(LLDLIBS) $(objects) : $(includes) $(CC) -c -I$(INCLUDEDIR) $<.PHONY : cleanclean: -rm -f $(objects) $(exec)

CISC640/440 OpenGL Tutorial

Outline

• Submission policy• OpenGL: Basics and setup• Draw geometry primitives• Transformations in OpenGL• Sample codes• Office hour

CISC640/440 OpenGL Tutorial

OpenGL: What is It?

•^

GL

G

raphics

L

ibrary): Library of 2-D, 3-D

drawing primitives and operations– API for 3-D hardware acceleration

•^

GLU

GL U

tilities): Miscellaneous functions

dealing with camera set-up and higher-levelshape descriptions

•^

GLUT

GL U

tility

T

oolkit): Window-system

independent toolkit with numerous utilityfunctions, mostly dealing with user interface

CISC640/440 OpenGL Tutorial

OpenGL: Setup in Windows

•^

Windows/VC++ 6.0–^

Get glut:http://www.xmission.com/~nate/glut.html

An excellent source for the setup of openGLon Windows/VC++ 6.0 is available at•^

http://www.lighthouse3d.com/opengl/glut/index.php

CISC640/440 OpenGL Tutorial

OpenGL: Setup in Windows

•^

Windows (step 1: create new project)

CISC640/440 OpenGL Tutorial

OpenGL: Setup in Windows

•^

Windows (step 3: insert file)

CISC640/440 OpenGL Tutorial

OpenGL: Setup in Windows

•^

Windows (step 4: project setting)

CISC640/440 OpenGL Tutorial

Outline

• Submission policy• OpenGL: Basics and setup• Draw geometry primitives• Transformations in OpenGL• Sample codes• Office hour

CISC640/440 OpenGL Tutorial

OpenGL Geometric Primitives

GL_QUAD_STRIP^ GL_QUAD_STRIP

GL_POLYGONGL_POLYGON

GL_TRIANGLE_STRIPGL_TRIANGLE_STRIP

GL_TRIANGLE_FANGL_TRIANGLE_FAN

GL_POINTSGL_POINTS

GL_LINESGL_LINES

GL_LINE_LOOPGL_LINE_LOOP

GL_LINE_STRIPGL_LINE_STRIP

GL_TRIANGLESGL_TRIANGLES

GL_QUADSGL_QUADS