1. Install OCCT and GLFW. On Ubuntu, you can do this by running the following commands in a terminal:
sudo apt-get update
sudo apt-get install libocct-data-exchange-dev libocct-visualization-dev
sudo apt-get install libglfw3-dev2. Create a new project and include the OCCT and GLFW header files. For example:
#include <GLFW/glfw3.h>
#include <OpenGl_GraphicDriver.hxx>
#include <AIS_InteractiveContext.hxx>3. Initialize GLFW and create a window. You can use the following code as a reference:
// Initialize GLFW
if (!glfwInit())
return -1;
// Create a GLFW window
GLFWwindow* window = glfwCreateWindow(640, 480, "OCCT + GLFW", NULL, NULL);
if (!window)
{
glfwTerminate();
return -1;
}
4. Initialize OCCT and create an interactive context. You can use the following code as a reference:
// Create an OCCT graphic driver
Handle(OpenGl_GraphicDriver) aGraphicDriver = new OpenGl_GraphicDriver(getenv("DISPLAY"));
// Create an OCCT interactive context
Handle(AIS_InteractiveContext) aContext = new AIS_InteractiveContext(aGraphicDriver);5. Display an object in the window using OCCT and GLFW. You can use the following code as a reference:
// Load an object
Handle(AIS_Shape) anObject = ...;
aContext->Display(anObject, Standard_True);
// Set the view
aContext->SetViewOrientation(V3d_Ypos);
// Set the background color
glClearColor(0.0, 0.0, 0.0, 1.0);
// Main loop
while (!glfwWindowShouldClose(window))
{
// Clear the window
glClear(GL_COLOR_BUFFER_BIT);
// Redraw the scene
aContext->UpdateCurrentViewer();
// Swap buffers
glfwSwapBuffers(window);
// Poll events
glfwPollEvents();
}
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