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// The contents of this file are in the public domain. See LICENSE_FOR_EXAMPLE_PROGRAMS.txt
/*
This is an example illustrating the use of the perspective_window tool
in the dlib C++ Library. It is a simple tool for displaying 3D point
clouds on the screen.
*/
#include <dlib/gui_widgets.h>
#include <dlib/image_transforms.h>
#include <cmath>
using namespace dlib;
using namespace std;
// ----------------------------------------------------------------------------------------
int main()
{
// Let's make a point cloud that looks like a 3D spiral.
std::vector<perspective_window::overlay_dot> points;
dlib::rand rnd;
for (double i = 0; i < 20; i+=0.001)
{
// Get a point on a spiral
dlib::vector<double> val(sin(i),cos(i),i/4);
// Now add some random noise to it
dlib::vector<double> temp(rnd.get_random_gaussian(),
rnd.get_random_gaussian(),
rnd.get_random_gaussian());
val += temp/20;
// Pick a color based on how far we are along the spiral
rgb_pixel color = colormap_jet(i,0,20);
// And add the point to the list of points we will display
points.push_back(perspective_window::overlay_dot(val, color));
}
// Now finally display the point cloud.
perspective_window win;
win.set_title("perspective_window 3D point cloud");
win.add_overlay(points);
win.wait_until_closed();
}
// ----------------------------------------------------------------------------
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