Daviddoria: Created page with '==DrawCube.cxx== #include #include //for exit() #include void display(void); void ProcessKeyboard(unsigned char key, int x,…'

2010-11-24T00:36:35Z

Created page with '==DrawCube.cxx== <source lang="cpp"> #include <iostream> #include <cstdlib> //for exit() #include <GL/glut.h> void display(void); void ProcessKeyboard(unsigned char key, int x,…'

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==DrawCube.cxx==
<source lang="cpp">
#include <iostream>
#include <cstdlib> //for exit()

#include <GL/glut.h>

void display(void);
void ProcessKeyboard(unsigned char key, int x, int y);
void DrawCube();
void DrawSizedCube(const float s);
void polygon(int a, int b, int c , int d);
void DrawPoint(double x, double y, double z);
void LookAt();

const unsigned int Width = 1000;
const unsigned int Height = 1000;

int main(int argc, char *argv[])
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(Width, Height);
glutInitWindowPosition(0, 0);

// Setup the main window
glutCreateWindow("OpenGL Example");

glutDisplayFunc(display);

glutMainLoop();
return 0;
}

void DrawPoint(double x, double y, double z)
{
glPointSize(10.0);
glBegin(GL_POINTS);
glColor3f(1,0,0);//red
glVertex3f(x,y,z);
glEnd();
}

void display(void)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);

LookAt();
DrawCube();
//DrawSizedCube(.5);
//DrawPoint(1.0, 2.0, 1.0);
//DrawPoint(0.0, 0.0, 0.0);

glutSwapBuffers();

}

void ProcessKeyboard(unsigned char key, int x, int y)
{
if (key == 27) //escape
{
exit(-1);
}
else if(key == 'q')
{
exit(-1);
}

display();
}

void DrawSizedCube(const float s)
{
glPushMatrix();
glScalef(s,s,s);
DrawCube();
glPopMatrix();

}

void DrawCube()
{
//back
glColor3f(1.0f, 0.0f, 0.0f); // Color Red
polygon(0,3,2,1);

//top
glColor3f(0.0f,1.0f,0.0f); // Color Green
polygon(2,3,7,6);

//left
glColor3f(0.0f, 0.0f, 1.0f); // Color Blue
polygon(0,4,7,3);

//right
glColor3f(1.0f,1.0f,0.0f); // Color Yellow
polygon(1,2,6,5);

//front
glColor3f(0.0f,1.0f,1.0f); // Color Cyan
polygon(4,5,6,7);

//bottom
glColor3f(1.0f,0.0f,1.0f); // Color Magenta
polygon(0,1,5,4);

}

void DrawAxes(void)
{

glPushMatrix();
/* No name for grey sphere */

glColor3f(0.3,0.3,0.3);
glutSolidSphere(0.7, 20, 20);

glPushMatrix();
glPushName(1); /* Red cone is 1 */
glColor3f(1,0,0);
glRotatef(90,0,1,0);
glutSolidCone(0.6, 4.0, 20, 20);
glPopName();
glPopMatrix();

glPushMatrix ();
glPushName(2); /* Green cone is 2 */
glColor3f(0,1,0);
glRotatef(-90,1,0,0);
glutSolidCone(0.6, 4.0, 20, 20);
glPopName();
glPopMatrix();

glColor3f(0,0,1); /* Blue cone is 3 */
glPushName(3);
glutSolidCone(0.6, 4.0, 20, 20);
glPopName();

glPopMatrix();
}

GLfloat vertices[][3] = {{-1.0,-1.0,-1.0},{1.0,-1.0,-1.0},
{1.0,1.0,-1.0}, {-1.0,1.0,-1.0}, {-1.0,-1.0,1.0},
{1.0,-1.0,1.0}, {1.0,1.0,1.0}, {-1.0,1.0,1.0}};

void polygon(int a, int b, int c , int d)
{
glBegin(GL_QUADS);
glVertex3fv(vertices[a]);
glVertex3fv(vertices[b]);
glVertex3fv(vertices[c]);
glVertex3fv(vertices[d]);
glEnd();
}

void LookAt()
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(70, 1, 1, 100);

glMatrixMode(GL_MODELVIEW);
glLoadIdentity();

//gluLookAt(2, 2, 10, 2, 0, 0, 0, 1, 0);
gluLookAt(0, 5, 5, 0, 0, 0, 0, 1, 0);
}

</source>

==CMakeLists.txt==
<source lang="cmake">
cmake_minimum_required(VERSION 2.6)

PROJECT(DrawCube)

find_package(GLUT)
find_package(OpenGL)

ADD_EXECUTABLE(DrawCube DrawCube.cpp)

TARGET_LINK_LIBRARIES(DrawCube ${GLUT_LIBRARY} ${OPENGL_LIBRARY})

</source>

OpenGL/DrawCube - Revision history

Daviddoria: Created page with '==DrawCube.cxx== #include #include //for exit() #include void display(void); void ProcessKeyboard(unsigned char key, int x,…'