void HUD::renderCameraPosition(float x, float y)
{
glPushMatrix();
glLoadIdentity();
std::ostringstream temp;
temp.precision(3);
Vector3D position = m_camera->getPosition();
temp << "Position (" << position.x << ", " << position.y << ", " << position.z << ")";
renderSpacedBitmapString(x, y, 2, GLUT_BITMAP_HELVETICA_10, temp.str().c_str());
glPopMatrix();
}
void drawAxes()
{
//To prevent the view from disturbed on repaint
//this push matrix call stores the current matrix state
//and restores it once we are done with the arrow rendering
glPushMatrix();
glColor3f(0,0,1);
glPushMatrix();
glTranslatef(0,0, 0.8f);
glutSolidCone(0.0325,0.2, 4,1);
//Draw label
glTranslatef(0,0.0625,0.225f);
renderSpacedBitmapString(0,0,0,GLUT_BITMAP_HELVETICA_10, (char*)"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
glTranslatef(0,0.0625,0.225f);
renderSpacedBitmapString(0,0,0,GLUT_BITMAP_HELVETICA_10, (char*)"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
glTranslatef(0,0.0625,0.225f);
renderSpacedBitmapString(0,0,0,GLUT_BITMAP_HELVETICA_10, (char*)"Y");
glPopMatrix();
glutSolidCone(0.0225,1, 4,1);
glPopMatrix();
}
void onRender() {
//Calculate fps
totalFrames++;
int current = glutGet(GLUT_ELAPSED_TIME);
if((current - startTime) > 1000) {
float elapsedTime = float(current-startTime);
fps = ((float)(totalFrames * 1000) / elapsedTime) ;
startTime = current;
totalFrames=0;
}
snprintf(buffer, HUD_BUFFER_SIZE, "FPS: %3.2f", fps);
resetPerspectiveProjection();
// Handle reshaping (preparing NiViewer)
glViewport(0, 0, nw, nh);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, (GLfloat)nw / (GLfloat)nh, 0.1f, 100.0f);
glMatrixMode(GL_MODELVIEW);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glTranslatef(0,0,dist);
glRotatef(rX,0,1,0);
glRotatef(rY,1,0,0);
renderModels();
setOrthoForFont();
glColor3f(1,1,1);
//Show the fps
renderSpacedBitmapString(20, 20, 0, GLUT_BITMAP_HELVETICA_12, buffer);
glutSwapBuffers();
}
