Adjusted line thickness

src/heightmap.cpp

@@ -154,7 +154,7 @@ Heightmap::Heightmap(std::string filename): _filename(filename) {
     _shader_ptr->setInt("plotLinesEnabled", 1);
     _shader_ptr->setVec3("plotLineAlongX_color", glm::vec3(1.f,0.f,1.f));
     _shader_ptr->setVec3("plotLineAlongY_color", glm::vec3(1.f,0.f,0.f));
-    _shader_ptr->setFloat("plotLineHalfThickness", 0.01f);
+    _shader_ptr->setFloat("plotLineHalfThickness", 0.001f);
     _shader_ptr->setFloat("plotLineAlongX_y", -99999.f);
     _shader_ptr->setFloat("plotLineAlongY_x", -99999.f);
 		_shader_ptr->unuse();