Drawing shp files using OpenGL

author ： Zhu Jincan
source ：clever101 The column

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OpenGL draw shp The idea of the document

  1. In the open shp Use after reading the file shapelib Library to read shp file , Specifically, all coordinate points are read out and put into an array , Then reset the 3D scene , Specifically, set the viewport to the window range , Create an orthogonally parallel Vista .
  2. Draw vector graphics according to coordinate points .

design sketch

   Source download link ： stay OpenGL Rendering in environment shp file , You can also set the background color .