/*
* GLUT calls this routine when an arrow key is pressed
*/
void special(int key,int x,int y)
{
if(!fp) {
// Right arrow key - increase angle by 5 degrees
if (key == GLUT_KEY_RIGHT)
th += 5;
// Left arrow key - decrease angle by 5 degrees
else if (key == GLUT_KEY_LEFT)
th -= 5;
// Up arrow key - increase elevation by 5 degrees
else if (key == GLUT_KEY_UP)
ph += 5;
// Down arrow key - decrease elevation by 5 degrees
else if (key == GLUT_KEY_DOWN)
ph -= 5;
// PageUp key - increase dim
else if (key == GLUT_KEY_PAGE_UP && dim>1)
dim -= 0.1;
// PageDown key - decrease dim
else if (key == GLUT_KEY_PAGE_DOWN)
dim += 0.1;
// Keep angles to +/-360 degrees
th %= 360;
ph %= 360;
}
// Update projection
myProject();
// Tell GLUT it is necessary to redisplay the scene
glutPostRedisplay();
}
/*
* GLUT calls this routine when the window is resized
*/
void reshape(int width,int height)
{
// Ratio of the width to the height of the window
asp = (height>0) ? (double)width/height : 1;
// Set the viewport to the entire window
glViewport(0,0, width,height);
// Set projection
myProject();
}
///
/// CUDA-lizable
///
void projectAllParticles(std::vector<Particle> &pars3d, std::vector<Particle> &pars2d)
{
pars2d.clear();
for(int i = 0; i < pars3d.size(); i++)
{
double vPrjPos[3] = {0};
if(!myProject( pars3d[i]._pos[0], pars3d[i]._pos[1], pars3d[i]._pos[2],
modelview, projection, viewport,
vPrjPos + 0, vPrjPos + 1, vPrjPos + 2) )
{
printf("gluProject fail.. %d\n", i);
}
float vFvPrjPos[3] = {vPrjPos[0], vPrjPos[1], vPrjPos[2]};
float vel[3] = {0};
pars2d.push_back(Particle(pars3d[i].nId, vFvPrjPos, vel, pars3d[i]._color));
}
}
/*
* GLUT calls this routine when a key is pressed
*/
void key(unsigned char ch,int x,int y)
{
// Exit on ESC
if (ch == 27)
exit(0);
// Toggle axes
else if (ch == '9')
axes = 1-axes;
// Pause Light
else if (ch == ' ') {
move = 1-move;
}
// Move light
else if (ch == '<')
zh += 3;
else if (ch == '>')
zh -= 3;
// Toggle first person
else if (ch == 'f' || ch == 'F')
{
fp = 1-fp;
}
if (fp) {
double dt = 0.05;
if (ch == 'w' || ch == 'W'){
Ex += Cx*dt; //Update the eye vector based on the camera vector
Ez += Cz*dt;
}
else if (ch == 'a' || ch == 'A'){
rot -= 3;
}
else if (ch == 's' || ch == 'S'){
Ex -= Cx*dt;
Ez -= Cz*dt;
}
else if (ch == 'd' || ch == 'D'){
rot += 3;
}
// Keep angles to +/-360 degrees
rot %= 360;
}
else {
// Reset view angle
if (ch == '0')
th = ph = 0;
// Switch display mode
else if (ch == 'm' || ch == 'M')
mode = 1-mode;
// Change field of view angle
else if (ch == '1')
fov--;
else if (ch == '2')
fov++;
}
// Reproject
myProject();
// Animate if requested
glutIdleFunc(move?idle:NULL);
// Tell GLUT it is necessary to redisplay the scene
glutPostRedisplay();
}
