3D-Computer-Vision/widgetPose.cpp at master · Sherif-Elshafei/3D-Computer-Vision · GitHub

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#include <opencv2/viz.hpp>
#include <opencv2/calib3d.hpp>
#include <iostream>
using namespace cv;
using namespace std;
static void help()
{
    cout
    << "--------------------------------------------------------------------------"   << endl
    << "This program shows how to visualize a cube rotated around (1,1,1) and shifted "
    << "using Rodrigues vector."                                                      << endl
    << "Usage:"                                                                       << endl
    << "./widget_pose"                                                                << endl
    << endl;
}
int main()
{
    help();
    viz::Viz3d myWindow("Coordinate Frame");
    myWindow.showWidget("Coordinate Widget", viz::WCoordinateSystem());
    viz::WLine axis(Point3f(-1.0f,-1.0f,-1.0f), Point3f(1.0f,1.0f,1.0f));
    axis.setRenderingProperty(viz::LINE_WIDTH, 4.0);
    myWindow.showWidget("Line Widget", axis);
    viz::WCube cube_widget(Point3f(0.5,0.5,0.0), Point3f(0.0,0.0,-0.5), true, viz::Color::blue());
    cube_widget.setRenderingProperty(viz::LINE_WIDTH, 4.0);
    myWindow.showWidget("Cube Widget", cube_widget);
    Mat rot_vec = Mat::zeros(1,3,CV_32F);
    float translation_phase = 0.0, translation = 0.0;
    rot_vec.at<float>(0, 0) += (float)CV_PI * 0.01f;
    rot_vec.at<float>(0, 1) += (float)CV_PI * 0.01f;
    rot_vec.at<float>(0, 2) += (float)CV_PI * 0.01f;
    translation_phase += (float)CV_PI * 0.01f;
    translation = sin(translation_phase);
    Mat rot_mat;
    Rodrigues(rot_vec, rot_mat);
    //cout << "rot_mat = " << rot_mat << endl;
    Affine3f pose(rot_mat, Vec3f(translation, translation, translation));
    Affine3f pose2(pose.matrix);
    //cout << "pose = " << pose.matrix << endl;
    //cout << "pose = " << pose2.matrix << endl;
    while(!myWindow.wasStopped())
    {
        /* Rotation using rodrigues */
        rot_vec.at<float>(0,0) += (float)CV_PI * 0.01f;
        rot_vec.at<float>(0,1) += (float)CV_PI * 0.01f;
        rot_vec.at<float>(0,2) += (float)CV_PI * 0.01f;
        translation_phase += (float)CV_PI * 0.01f;
        translation = sin(translation_phase);
        Mat rot_mat1;
        Rodrigues(rot_vec, rot_mat1);
        Affine3f pose1(rot_mat1, Vec3f(translation, translation, translation));
        myWindow.setWidgetPose("Cube Widget", pose1);
        myWindow.spinOnce(1, true);
    }
    return 0;
}