test-ftgl.cpp

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/*
 * test.cpp
 *
 * Copyright (C) 2010  Thomas A. Vaughan
 * All rights reserved.
 *
 * Program to test the ftgl library.
 */

// includes --------------------------------------------------------------------
#include <iostream>

#include "glut-demo/glut-demo.h"
#include "glut-font/ftgl.h"
#include "perf/perf.h"



////////////////////////////////////////////////////////////////////////////////
//
//      static helper methods
//
////////////////////////////////////////////////////////////////////////////////

static void
write
(
IN FTFont * font,
IN const char * text
)
{
        ASSERT(font, "null");
        ASSERT(text, "null");

        int dy = (int) (font->LineHeight() + 0.5);

        font->Render(text);

        glTranslatef(0, -(dy + 2), 0);
}



class Drawer : public glut::DemoHost {
public:
        Drawer(IN const char * path) {
                        ASSERT(path, "null");
                        m_fontPath = path;
                }
        ~Drawer(void) throw() { }

        // glut::Host class interface methods ----------------------------------
        void onInit(void) {
                        // load font
                        m_font = new FTGLTextureFont(m_fontPath.c_str());
                        ASSERT(m_font, "out of memory");

                        // initialize
                        m_font->FaceSize(40);
                }

        bool displayAxes(void) { return false; }

        void display2D(IN int width, IN int height) {
                        ASSERT(m_font, "null");

                        glColor3f(1.0, 0.5, 1.0);

                        // note: need to account for FTGL coordinate convention
                        glMatrixMode(GL_MODELVIEW);
                        glPushMatrix();
                        glScalef(1, -1, 1);
                        glTranslatef(16, -64, 0);

                        // now move to center
                        write(m_font, "This is a test");
                        write(m_font, "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
                        write(m_font, "abcdefghijklmnopqrstuvwxyz");
                        write(m_font, "0123456789");
                        write(m_font, "+-=[]{}|\\/<>,.!?\"'@#$%^&*()");
                        write(m_font, "Hello World!  Tread carefully...");
                        write(m_font, "Four score and seven years ago,");
                        write(m_font, "Isotope Au134");
                        write(m_font, "You found a +3 backscratcher.");
                        write(m_font, "This is not a true story");
                        write(m_font, "    ...but it could be.");
                        glPopMatrix();
                }
        
private:
        std::string                     m_fontPath;
        smart_ptr<FTGLTextureFont>      m_font;
};



////////////////////////////////////////////////////////////////////////////////
//
//      entry point
//
////////////////////////////////////////////////////////////////////////////////

int
main
(
IN int argc,
IN const char * argv[]
)
{
        ASSERT(2 == argc, "Usage: ftgl-test <font-path>");
        const char * font_path = argv[1];
        DPRINTF("Using font path: '%s'", font_path);

        try {
                // title
                std::string title = "FTGL font test: ";
                title += font_path;

                // main loop
                smart_ptr<glut::DemoHost> host = new Drawer(font_path);
                ASSERT(host, "out of memory");
                glut::startDemo(argc, argv, title.c_str(), host);

        } catch (std::exception& e) {
                DPRINTF("Exception: %s", e.what());
        }

        // only reach here on error
        return -1;
}