2D - 3D Mouse projection

[Blue Solitare]

Does LE have a built in 2D mouse to 3D scene projection method? If so, what is it named?

 

Thanks,

 

Blue

[macklebee]

take a look at CameraProject()

[Blue Solitare]

Thanks for the quick reply. I implemented the CameraProject() method from the example and things mostly work. The problem is with the glReadPixels() method. Is there another LE method that could be used to replace glReadPixels, it's really expensive. It also causes a problem in situations where the cursor is mousing over something other then the terrain, which is what I need to project to. I'm getting a false projection.

 

I'm using LEO, if it makes a difference.

 

Thanks,

 

Blue

[Umnik]

TPick pick;

if(MouseHit(1)) {
  HideEntity(character);
  if(CameraPick(&pick,camera,Vec3(MouseX(),MouseY(),200.0))) {
     PositionEntity(cursor,Vec3(pick.X,pick.Y+0.25,pick.Z));
  }
  ShowEntity(character);
}

 

You need use HideEntity() && ShowEntity()!

[Blue Solitare]

Wouldn't hiding entities cause a flickering effect or cause them to go away all together?

 

What I'm trying to do is find a replacement for glReadPixels for two reasons:

1. It's slow and expensive

2. It reads the closets pixel to the camera (in my situation), which in many cases is not what I want due to having other objects in the scene. I only want to read the terrain pixels.

 

Is there a way (RenderWorld?) to only render the terrain, read my terrain, then render the rest of the scene?

[Marleys Ghost]

Wouldn't hiding entities cause a flickering effect or cause them to go away all together?

 

 

I use Hide and Show when casting from NPC's I have not noticed any flickering. As you can see in the two videos Here.

[Canardia]

It can't flicker because there is no rendering between Hide and Show. Only the final state is rendered.

[Blue Solitare]

Good point!

 

I'll try it out..

 

Thanks for the help.