libTexture / libGlFont documentation

Work in progress ...

Download libTexture (zip)
Download libTexture (tar.gz)

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• Introduction
  • Supported formats
  • Install (Linux)
  • Install (Windows)
  • Contents
• Tutorial

Introduction

Supported formats

TGA, JPG, PNG.

Install (Linux)

• tar xvfz libtexture.tar.gz
• edit Makefile to choose intallation path !
• make
• make install

Install (Windows)

Visual C++ project files are included.

Contents

• include library includes
• lib libTexture.a after compilation
• src libTexture source code
• doc manual
• font contains the default libTexture font
• tutorial tutorials that demonstrate how to use libTexture and libGlFont to load images and display text

Tutorial

Commented source code

• glfont_demo demonstrates how to use libGlFont to display text.
• normalmap computes the normal map from a height field texture.
• viewer a simple image viewer build with libTexture, libGlFont and OpenGL.

Loading a texture in OpenGL

...

#include <gltex.h>

...

void main()
{
  GLuint texid;

  texid=gltex::gltexLoadTexture("my_picture.tga");

  ...
}

Displaying text

...

#include <glfont.h>

GLfont *g_Font;

...

void main()
{
  ...
  // load font
  g_Font=new GLfont("../font/default.tga");
  ...
}

void render()
{
  ...
  g_Font->printString(0.0,0.5,0.1,"Text at (0.0,0.5) of size 0.1");    
  ...
}

The text can also be translated and sized using MODELVIEW matrix.
The function printStringNeed retrieves the space needed on screen to display a text.

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