2. PhysX Windows

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Main.CPP File:

Now that we have our workspace setup for coding with the PhysX SDK, lets get a basic program up and running that incorporates OpenGL. I am going to start off with a base OpenGL program with a display function and reshape function, and the base GLUT code in our main function. The base of this program looks simply like this:

// #include <GL\glut.h>
// #include <GL\gl.h>

// void display(void){
// glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
// glLoadIdentity();

// glutSwapBuffers();
// }

// void reshape(int w, int h){

// glViewport(0,0, (GLsizei)w, (GLsizei)h);
// glMatrixMode(GL_PROJECTION);
// glLoadIdentity();
// gluPerspective(60, (GLfloat)w / (GLfloat)h, 0.1f, 100.0f);
// glMatrixMode(GL_MODELVIEW);
// }

// int main(int argc, char** argv) {
// glutInit(&argc, argv);
// glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_STENCIL);
// glutInitWindowSize(500, 500);
// glutInitWindowPosition(100, 100);
// glutCreateWindow("Physics");

// glutDisplayFunc(display);
// glutIdleFunc(display);
// glutReshapeFunc(reshape);

// glutMainLoop();

// return 0;

// }

So lets go ahead and create a function to initialize our PhysX SDK with. I am going to call this initNX. This is going to contain the code from the previous tutorial for Physics SDK:

// void initNX(void){
// gPhysicsSDK = NxCreatePhysicsSDK(NX_PHYSICS_SDK_VERSION);
// }

Now that we have initialized the PhysX SDK, lets go ahead and create a cleanup function which I am going to call deinitNX:

// void deinitNX(void){
// gPhysicsSDK->release();
// }

These functions are going to be called from inside our main function:

// int main(int argc, char** argv) {
// glutInit(&argc, argv);

// glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_STENCIL);
// glutInitWindowSize(500, 500);
// glutInitWindowPosition(100, 100);
// glutCreateWindow("Physics");

// initNX();

// glutDisplayFunc(display);
// glutIdleFunc(display);
// glutReshapeFunc(reshape);

// glutMainLoop();

// deinitNX();

// return 0;
// }

In my opinion, this is looking much neater and much more like a program than the last tutorial. So next up we are going to create a virtual scene for our physics calculations to take place. Check it out here.

If you have any questions, just email me at swiftless@gmail.com

#include <stdio.h>

#include <GL\glut.h>
#include <GL\gl.h>

#include <Physics\include\NxPhysics.h>

#define NOMINMAX

#include <windows.h>

#pragma comment(lib,"PhysXLoader.lib")
#pragma comment(lib,"NxCharacter.lib")
#pragma comment(lib,"NxCooking.lib")
#pragma comment(lib,"NxExtensions.lib")

static NxPhysicsSDK* gPhysicsSDK = NULL;

void initNX(void){
gPhysicsSDK = NxCreatePhysicsSDK(NX_PHYSICS_SDK_VERSION);
}

void deinitNX(void){
gPhysicsSDK->release();

}

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

glutSwapBuffers();
}

void reshape(int w, int h){
glViewport(0,0, (GLsizei)w, (GLsizei)h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, (GLfloat)w / (GLfloat)h, 0.1f, 100.0f);
glMatrixMode(GL_MODELVIEW);

}

int main(int argc, char** argv) {
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_STENCIL);
glutInitWindowSize(500, 500);
glutInitWindowPosition(100, 100);

glutCreateWindow("Physics");

initNX();

glutDisplayFunc(display);
glutIdleFunc(display);
glutReshapeFunc(reshape);

glutMainLoop();

deinitNX();

return 0;
}

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Download main.cpp Source Code for this Tutorial

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