2D on top of 3D

Snoweyy

This seems like an easy question to answer but I can not figure it out.

I am attempting to draw a 2D GUI on top of a 3D sketch. I am using PeasyCam in order to move around in 3d Space, so my position and angle where I am looking is changing all the time. I want to create a crosshair in the center of the screen, any help?

koogs

at the very bottom of the peasycam webpage:

// Utility methods to permit the use of a Heads-Up Display
// Thanks, A.W. Martin
camera.beginHUD();
// now draw things that you want relative to the camera's position and orientation
camera.endHUD(); // always!

quark

PeasyCam has two simple instructions to do that

void draw(){
  background(0);
  // 3D drawing stuff here
  pcam.beginHUD();
  // 2D stuff here
  pcam.endHUD();
}

where pcam is a PeasyCam object.

If you are creating a desktop application, G4P provides a set of GUI controls that work with PeasyCam or any P3D application

jeremydouglass

@Snoweyy -- if you are trying to create a layered display, rather than a simple HUD or a GUI, a third approach is to use PGraphics and build your 2D HUD and 3D world out of different graphics layers:

• https://forum.processing.org/two/discussion/comment/97765/#Comment_97765