void kzsGLUtil::drawAxes()
{
glPushMatrix();
glColor3f( 0, 0, 1 );
glPushMatrix();
glTranslatef( 0, 0, 0.8f );
glutSolidCone( 0.0325, 0.2, 4, 1 );
// Draw label Z
glTranslatef(0,0.0625,0.225f);
RenderSpacedBitmapString(0,0,0,GLUT_BITMAP_HELVETICA_10, "Z");
glPopMatrix();
glutSolidCone(0.0225,1, 4,1);
glColor3f( 1, 0, 0 );
glRotatef( 90, 0, 1, 0 );
glPushMatrix();
glTranslatef( 0, 0, 0.8f );
glutSolidCone( 0.0325, 0.2, 4, 1 );
// Draw label X
glTranslatef( 0, 0.0625, 0.225f );
RenderSpacedBitmapString( 0, 0, 0, GLUT_BITMAP_HELVETICA_10, "X" );
glPopMatrix();
glutSolidCone( 0.0225, 1, 4, 1 );
glColor3f( 0, 1, 0 );
glRotatef( 90, -1, 0, 0 );
glPushMatrix();
glTranslatef( 0, 0, 0.8f );
glutSolidCone( 0.0325, 0.2, 4, 1 );
// Draw label Y
glTranslatef( 0, 0.0625, 0.225f );
RenderSpacedBitmapString( 0, 0, 0, GLUT_BITMAP_HELVETICA_10, "Y" );
glPopMatrix();
glutSolidCone( 0.0225, 1, 4, 1 );
glPopMatrix();
}
// main render function called by glut
void OnRender() {
//Calculate fps
totalFrames++;
int current = glutGet(GLUT_ELAPSED_TIME);
float elapsedTime = float(current - startTime);
static float lastfpsTime = 0.0f;
if ((current - lastfpsTime) > 1000.0f)
{
fps = ((totalFrames * 1000.0f) / ((current - lastfpsTime)));
totalFrames = 0;
lastfpsTime = float(current);
}
startTime = current;
sprintf_s(buffer, "FPS: %3.2f", fps);
//Update PhysX
if (gScene)
{
stepPhysics(elapsedTime / 1000.0f);
}
// start render
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glTranslatef(0, 0, dist);
glRotatef(rX, 1, 0, 0);
glRotatef(rY, 0, 1, 0);
//Draw the grid and axes
DrawAxes();
DrawGrid(100);
// draw physics objects
glEnable(GL_LIGHTING);
RenderPhysXScene();
glDisable(GL_LIGHTING);
//Show the fps
SetOrthoForFont(WINDOW_WIDTH, WINDOW_HEIGHT);
glColor3f(1, 1, 1);
RenderSpacedBitmapString(20, 20, 0, GLUT_BITMAP_HELVETICA_12, buffer);
ResetPerspectiveProjection();
// finish render
glutSwapBuffers();
}
// main render function called by glut
void OnRender() {
//Calculate fps
totalFrames++;
int current = glutGet(GLUT_ELAPSED_TIME);
float elapsedTime = float(current - startTime);
static float lastfpsTime = 0.0f;
if ((current - lastfpsTime) > 1000.0f)
{
fps = ((totalFrames * 1000.0f) / ((current - lastfpsTime)));
totalFrames = 0;
lastfpsTime = float(current);
}
startTime = current;
sprintf_s(buffer, "FPS: %3.2f", fps);
//Update PhysX
if (gScene)
{
stepPhysics(elapsedTime / 1000.0f);
}
// start render
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glTranslatef(0, 0, dist);
glRotatef(rX, 1, 0, 0);
glRotatef(rY, 0, 1, 0);
// shoot
if (shoot)
{
GLdouble matModelView[16], matProjection[16];
GLdouble camera_pos[3];
int viewport[4];
// get matrixs and viewport:
glGetDoublev(GL_MODELVIEW_MATRIX, matModelView);
glGetDoublev(GL_PROJECTION_MATRIX, matProjection);
glGetIntegerv(GL_VIEWPORT, viewport);
gluUnProject((viewport[2] - viewport[0]) / 2, (viewport[3] - viewport[1]) / 2,
0.0, matModelView, matProjection, viewport,
&camera_pos[0], &camera_pos[1], &camera_pos[2]);
//PxVec3 p(camera_pos[0], camera_pos[1], camera_pos[2]);
//AddBullet(p, -p.getNormalized() * 10.0f);
shoot = false;
//
//GLdouble mpos[3];
//gluUnProject(oldX, oldY, 0,
// matModelView,
// matProjection, viewport, &mpos[0], &mpos[1], &mpos[2]);
GLfloat winX, winY, winZ; //variables to hold screen x,y,z coordinates
GLdouble worldX, worldY, worldZ; //variables to hold world x,y,z coordinates
winX = (float)(viewport[2] - viewport[0]) / 2;
winY = (float)(viewport[3] - viewport[1]) / 2;
glReadPixels(winX, winY, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &winZ);
//get the world coordinates from the screen coordinates
gluUnProject(winX, winY, 0.0, matModelView, matProjection
, viewport, &worldX, &worldY, &worldZ);
GLdouble fx, fy, fz;
gluUnProject(winX, winY, 1.0, matModelView, matProjection
, viewport, &fx, &fy, &fz);
PxVec3 pp(worldX, worldY, worldZ);
PxVec3 vv(fx - worldX, fy - worldY, fz - worldZ);
AddBullet(pp, vv.getNormalized() * 10.0f);
}
//Draw the grid and axes
DrawAxes();
DrawGrid(100);
// draw physics objects
glEnable(GL_LIGHTING);
RenderPhysXScene();
glDisable(GL_LIGHTING);
//Show the fps
SetOrthoForFont(WINDOW_WIDTH, WINDOW_HEIGHT);
glColor3f(1, 1, 1);
RenderSpacedBitmapString(20, 20, 0, GLUT_BITMAP_HELVETICA_12, buffer);
ResetPerspectiveProjection();
// finish render
glutSwapBuffers();
}
