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/*! \example tutorial-ibvs-4pts.cpp */
#include <visp3/core/vpConfig.h>
#include <visp3/robot/vpSimulatorCamera.h>
#include <visp3/visual_features/vpFeatureBuilder.h>
#include <visp3/vs/vpServo.h>
int main()
{
#ifdef ENABLE_VISP_NAMESPACE
using namespace VISP_NAMESPACE_NAME;
#endif
try {
vpHomogeneousMatrix cdMo(0, 0, 0.75, 0, 0, 0);
vpHomogeneousMatrix cMo(0.15, -0.1, 1., vpMath::rad(10), vpMath::rad(-10), vpMath::rad(50));
vpPoint point[4];
point[0].setWorldCoordinates(-0.1, -0.1, 0);
point[1].setWorldCoordinates(0.1, -0.1, 0);
point[2].setWorldCoordinates(0.1, 0.1, 0);
point[3].setWorldCoordinates(-0.1, 0.1, 0);
vpServo task;
task.setServo(vpServo::EYEINHAND_CAMERA);
task.setInteractionMatrixType(vpServo::CURRENT);
task.setLambda(0.5);
vpFeaturePoint p[4], pd[4];
for (unsigned int i = 0; i < 4; i++) {
point[i].track(cdMo);
vpFeatureBuilder::create(pd[i], point[i]);
point[i].track(cMo);
vpFeatureBuilder::create(p[i], point[i]);
task.addFeature(p[i], pd[i]);
}
vpHomogeneousMatrix wMc, wMo;
vpSimulatorCamera robot;
robot.setSamplingTime(0.040);
robot.getPosition(wMc);
wMo = wMc * cMo;
std::cout << "Start visual-servoing loop..." << std::endl;
for (unsigned int iter = 0; iter < 150; iter++) {
robot.getPosition(wMc);
cMo = wMc.inverse() * wMo;
for (unsigned int i = 0; i < 4; i++) {
point[i].track(cMo);
vpFeatureBuilder::create(p[i], point[i]);
}
vpColVector v = task.computeControlLaw();
robot.setVelocity(vpRobot::CAMERA_FRAME, v);
}
std::cout << "Stop visual-servoing loop" << std::endl;
}
catch (const vpException &e) {
std::cout << "Catch an exception: " << e << std::endl;
}
}
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