OpenGL/Text - Revision history

Daviddoria: Created page with 'This example displays white text in the lower left corner of the window. ==Text.cxx== #include #include #include #include
2010-11-24T00:48:57Z

Created page with 'This example displays white text in the lower left corner of the window. ==Text.cxx== <source lang="cpp"> #include <iostream> #include <cstdio> #include <string> #include <cstdl…'

New page
This example displays white text in the lower left corner of the window.

==Text.cxx==
<source lang="cpp">
#include <iostream>
#include <cstdio>
#include <string>
#include <cstdlib>

#include <GL/glut.h>

using namespace std;

void display(void);
void polygon(int a, int b, int c , int d);
void DrawCube();
void printtext(int x, int y, string String);

int WindowHeight = 1000;
int WindowWidth = 1000;

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

glutCreateWindow("OpenGL Text Example");

glutDisplayFunc(display);

glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(70, 1, 1, 100);

glMatrixMode(GL_MODELVIEW);
glLoadIdentity();

gluLookAt(2, 2, 10, 2, 0, 0, 0, 1, 0);

glutMainLoop();
return 0;
}

void printtext(int x, int y, string String)
{
//(x,y) is from the bottom left of the window
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0, WindowWidth, 0, WindowHeight, -1.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glPushAttrib(GL_DEPTH_TEST);
glDisable(GL_DEPTH_TEST);
glRasterPos2i(x,y);
for (int i=0; i<String.size(); i++)
{
glutBitmapCharacter(GLUT_BITMAP_9_BY_15, String[i]);
}
glPopAttrib();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}

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

glEnable(GL_DEPTH_TEST);

char string[64];
sprintf(string, "something");
printtext(10,10,string);

glutSwapBuffers();
}

</source>

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

PROJECT(Text)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp") #g++

INCLUDE_DIRECTORIES(/usr/include/ /usr/local/include/)

LINK_DIRECTORIES(/usr/lib /usr/local/lib)

ADD_EXECUTABLE(Text Text.cpp)

TARGET_LINK_LIBRARIES(Text glut GLU GL Xmu X11 )

</source>