opengl oop

[Adrian Nania]

Hello all,

I tried to wrap this simple opengl code into C++:

/// file = main.cpp
#include "../gltools.h"

void RenderScene(void)
{ glClear(GL_COLOR_BUFFER_BIT);
glFlush();
}
void SetupRC(void)
{ glClearColor(0.25f, 0.25f, 0.2500001f, 1.0f);
}
void normalKeys(unsigned char key, int x, int y)
{ if (key == 27) //Esc key pressed => exit
exit(0);
}
int main(int argc, char **argv)
{ glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGBA);
glutCreateWindow("Simple");
glutFullScreen();
glutKeyboardFunc(normalKeys);
glutDisplayFunc(RenderScene);
SetupRC();
glutMainLoop();
return 0;
}
since I do not have the skills for this task, I followed this tutorial: http://paulsolt.com/2009/07/openglglut-classes-oop-and-problems. Do not forget to check the link Paul was kind to provid for free with a fully working examle.
I tried something like this:

/// file = main.cpp
#include "AnimationFramework.h"
int main(int argc, char *argv[])
{ AnimationFramework *f = new AnimationFramework();
f->setInstance(f);
f->startFramework(argc, argv);
return 0;
}

///AnimationFramework.h
#include "../gltools.h" ///OpenGL toolkit, system dependent setting, and special general functions
class AnimationFramework
{
protected:
static AnimationFramework *instance;
public:
static void setInstance(AnimationFramework * framework);
static void renderSceneWrap(void);
static void normalKeysWrap(unsigned char key, int x, int y);
void startFramework(int argc, char *argv[]);
virtual void renderScene(void);
virtual void normalKeys(unsigned char key, int x, int y);
virtual void setupRC();
};
void AnimationFramework::startFramework(int argc, char *argv[])
{ ///initialize GLUT
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGBA);
glutCreateWindow("Simple");
glutFullScreen();
///function callbacks
glutKeyboardFunc(normalKeysWrap);
glutDisplayFunc(renderSceneWrap);
setupRC();
///start main
glutMainLoop();
}
///virtual instance functions
void AnimationFramework::renderScene(void)
{ glClear(GL_COLOR_BUFFER_BIT);
glFlush();
}
void AnimationFramework::setupRC(void)
{ glClearColor(0.25f, 0.25f, 0.2500001f, 1.0f);
}
void AnimationFramework::normalKeys(unsigned char key, int x, int y)
{ if (key == 27)
exit(0);
}
///call from static callback functions
void AnimationFramework::renderSceneWrap(void)
{ instance->renderScene();
}
void AnimationFramework::normalKeysWrap(unsigned char key, int x, int y)
{ instance->normalKeys(key, x, y);
}
void AnimationFramework::setInstance(AnimationFramework * framework)
{ instance=framework;
}
AnimationFramework *AnimationFramework::instance = 0;

Adi

[Sockerdrickan]

Learn C++ FIRST

[Adrian Nania]

I managed to fix the code and I hope other people interested could save some time. While this working example is not for experienced programmers, for beginners like me could prove useful.

[Adrian Nania]

Many thanks to Sockerdrickan for his friendly help. I wonder if he got all his 1992 beans with his template response.
All the best

[Sockerdrickan]

Many thanks to Sockerdrickan for his friendly help. I wonder if he got all his 1992 beans with his template response.
All the best
I got them while wanking to threads that ask users for help with homework.

[Adrian Nania]

I am as far as you can get from programming. At home and on my personal time only I am playing with some programming examples. Next time maybe you can just ignore questions, don't assume you know who is asking for help.
All the best