这个程序可以读取文件中记录的机器人运动轨迹绘制到窗口里。看一下输入数据,大概有600多个数据数据格式是时间,平移t(x,y,z),旋转四元数q(x,y,z,w)以第2个数据为例时间是1305031526.707547,x轴的平移是0.002883195,y轴的平移是-0.004662100,z轴的平移是-0.002254304,旋转四元数是0.011409802,0.010697415,0.002189494,0.999875307.运行程序后会显示机器人的运动轨迹这是正在绘制时截的图这是绘制完成后的截图对比上面两张图片可以看出来起点在第一张图片的右边。这还看不出来是3D的运动轨迹再截一张不同角度的输入trajectory.txt,记录机器人运动轨迹的文档输出没有保存输出结果运行编译后直接运行视频演示https://www.bilibili.com/video/BV1mD7B6eEVP/代码#include pangolin/pangolin.h #include Eigen/Core #include unistd.h using namespace Eigen; using namespace std; // path to trajectory file string trajectory_file ./examples/trajectory.txt; void DrawTrajectory(vectorIsometry3d, Eigen::aligned_allocatorIsometry3d); int main(int argc, char **argv) { vectorIsometry3d, Eigen::aligned_allocatorIsometry3d poses; ifstream fin(trajectory_file); if (!fin) { cout cannot find trajectory file at trajectory_file endl; return 1; } while (!fin.eof()) { double time, tx, ty, tz, qx, qy, qz, qw; fin time tx ty tz qx qy qz qw; Isometry3d Twr(Quaterniond(qw, qx, qy, qz)); Twr.pretranslate(Vector3d(tx, ty, tz)); poses.push_back(Twr); } cout read total poses.size() pose entries endl; // draw trajectory in pangolin DrawTrajectory(poses); return 0; } void DrawTrajectory(vectorIsometry3d, Eigen::aligned_allocatorIsometry3d poses) { // create pangolin window and plot the trajectory pangolin::CreateWindowAndBind(Trajectory Viewer, 1024, 768); glEnable(GL_DEPTH_TEST); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); pangolin::OpenGlRenderState s_cam( pangolin::ProjectionMatrix(1024, 768, 500, 500, 512, 389, 0.1, 1000), pangolin::ModelViewLookAt(0, -0.1, -1.8, 0, 0, 0, 0.0, -1.0, 0.0) ); pangolin::View d_cam pangolin::CreateDisplay() .SetBounds(0.0, 1.0, 0.0, 1.0, -1024.0f / 768.0f) .SetHandler(new pangolin::Handler3D(s_cam)); while (pangolin::ShouldQuit() false) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); d_cam.Activate(s_cam); glClearColor(1.0f, 1.0f, 1.0f, 1.0f); glLineWidth(2); for (size_t i 0; i poses.size(); i) { // 画每个位姿的三个坐标轴 Vector3d Ow poses[i].translation(); Vector3d Xw poses[i] * (0.1 * Vector3d(1, 0, 0)); Vector3d Yw poses[i] * (0.1 * Vector3d(0, 1, 0)); Vector3d Zw poses[i] * (0.1 * Vector3d(0, 0, 1)); glBegin(GL_LINES); glColor3f(1.0, 0.0, 0.0); glVertex3d(Ow[0], Ow[1], Ow[2]); glVertex3d(Xw[0], Xw[1], Xw[2]); glColor3f(0.0, 1.0, 0.0); glVertex3d(Ow[0], Ow[1], Ow[2]); glVertex3d(Yw[0], Yw[1], Yw[2]); glColor3f(0.0, 0.0, 1.0); glVertex3d(Ow[0], Ow[1], Ow[2]); glVertex3d(Zw[0], Zw[1], Zw[2]); glEnd(); } // 画出连线 for (size_t i 0; i poses.size(); i) { glColor3f(0.0, 0.0, 0.0); glBegin(GL_LINES); auto p1 poses[i], p2 poses[i1]; glVertex3d(p1.translation()[0], p1.translation()[1], p1.translation()[2]); glVertex3d(p2.translation()[0], p2.translation()[1], p2.translation()[2]); glEnd(); } pangolin::FinishFrame(); usleep(5000); // sleep 5 ms } }参考高翔《视觉SLAM十四讲》P66附近
