MRPT图形界面

  mrpt-gui模块中提供了三个类以实现显示GUI窗口,每个都有特定的用途:

  All these window classes inherits from mrpt::gui::CBaseGUIWindow, which provides a set of methods and variables common to all the classes. It allow moving/resizing the windows, polling for key strokes, etc. All the classes in this library are in the namespace mrpt::gui

  在Ubuntu中使用如下命令安装mrpt的APP和lib:

sudo apt-get install mrpt-apps libmrpt-dev

  下面的代码绘制一幅正态分布概率密度函数图,自变量范围为0~5。

#include <mrpt/gui/CDisplayWindowPlots.h>
#include <mrpt/math/CVectorTemplate.h>
#include <mrpt/math/distributions.h>
#include <mrpt/system/os.h>
#include <mrpt/system/threads.h> using namespace std;
using namespace mrpt;
using namespace mrpt::math;
using namespace mrpt::gui; // ------------------------------------------------------
// TestDisplayPlots
// ------------------------------------------------------
int main()
{
CDisplayWindowPlots win("Example of function plot",,); //width:500, height:400 // Generate data for a 2D plot:
CVectorDouble X,Y;
for (double x=;x<;x+=0.01f)
{
//Evaluates the multivariate normal (Gaussian) distribution at a given point "x".
double y = normalPDF(x, ,0.3); X.push_back(x);
Y.push_back(y);
} //Adds a new layer with a 2D plot based on two vectors of X and Y points, using a MATLAB-like syntax.
/*********************************************************************
The lineFormat string is a combination of the following characters: Line styles:
'.': One point for each data point
'-': A continuous line
':': A dashed line Colors:
k: black
r: red
g: green
b: blue
m: magenta
c: cyan Line width:
'1' to '9': The line width (default=1) Examples:
'r.' -> red points.
'k3' or 'k-3' -> A black line with a line width of 3 pixels.
********************************************************************/
win.plot(X,Y,"b-2"); //Enable/disable the feature of pan/zoom with the mouse (default=enabled)
win.enableMousePanZoom(true);
//Enable/disable the fixed X/Y aspect ratio fix feature
win.axis_equal(false);
//Fix automatically the view area according to existing graphs
win.axis_fit();
//Changes the position of the window on the screen.
win.setPos(,); cout << "Press any key to exit..." << endl;
win.waitForKey(); //while (!mrpt::system::os::kbhit() &&win.isOpen())
//mrpt::system::sleep(50); return ;
}

  使用CMake来生成makefile:

SET(sampleName displayPlots)
SET(PRJ_NAME "EXAMPLE_${sampleName}") # ---------------------------------------
# Declare a new CMake Project:
# ---------------------------------------
PROJECT(${PRJ_NAME}) # These commands are needed by modern versions of CMake:
CMAKE_MINIMUM_REQUIRED(VERSION 2.6) FIND_PACKAGE(MRPT REQUIRED base;gui) # ---------------------------------------------
# TARGET:
# ---------------------------------------------
# Define the executable target:
ADD_EXECUTABLE(${sampleName} test.cpp ) # Add the required libraries for linking:
TARGET_LINK_LIBRARIES(${sampleName}
${MRPT_LIBS} # This is filled by FIND_PACKAGE(MRPT ...)
"" # Optional extra libs...
)

MRPT图形界面

  其中,enableMousePanZoom函数参数为true时可以进行如下操作:滚动鼠标中键,可以上下平移函数图象;按住鼠标右键可以对图像进行拖动;鼠标左键可以进行框选将函数图象放大。当设为false时这些操作被禁用。axis_equal函数参数为true时,X、Y坐标轴的单位长度将相等,即以相同的比例显示函数图象。axis_fit()函数可以用来自动调整函数图象以适应窗口。

参考:

http://www.mrpt.org/MRPT_in_GNU/Linux_repositories

https://github.com/MRPT/mrpt/tree/master/samples/displayPlots

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