How to combine 2d and 3d?

djevazi

Here is two sketches - one of them is 2d and the other is 3d. The question is how to combine 2d and 3d, how to hold red brush and text in 2d, and let the sphere rotate? My problem is that red brush and text rotating with 3d objects.

2d sketch:

void setup()
{
  size(800,800);
}

void draw()
{
  background(150);

  noFill();
  stroke(255,0,0);
  ellipse(mouseX,mouseY,100,100);
  ellipse(mouseX,mouseY,50,50);
  ellipse(mouseX,mouseY,2,2);

  text("some text",20,30);
  text("some text",width-80,30);
  text("some text",20,height-30);
  text("some text",width-80,height-30);
}

And 3d sketch (requires PeasyCam library):

import peasy.*;
PeasyCam jcam;

void setup()
{
  jcam = new PeasyCam(this,200);
  size(800,800,P3D);
}

void draw()
{
  background(150);

  sphereDetail(10,10);
  sphere(50);
}

Chrisir

yeah it's called a HUD - see wikipedia

in draw first do all stuff 3D

then end draw() with the 2D stuff:

          //---- HUD

          camera(); 
          noLights();

          hint(DISABLE_DEPTH_TEST);
          noLights();
          textMode(MODEL);


          // ALL 2D stuff    ...................

          // prepare to return to 3D 
          hint(ENABLE_DEPTH_TEST);


    } // end of draw() 

djevazi

All I need is hint(DISABLE_DEPTH_TEST)? For some reason not working. Here is new code:

import peasy.*;
PeasyCam jcam;

void setup()
{
  jcam = new PeasyCam(this,200);
  size(800,800,P3D);
}

void draw()
{
  background(150);

  stroke(100);
  fill(255);
  sphereDetail(10,10);
  sphere(50);

  hint(DISABLE_DEPTH_TEST);
  textMode(MODEL);

  noFill();
  stroke(255,0,0);
  ellipse(mouseX,mouseY,100,100);
  ellipse(mouseX,mouseY,50,50);
  ellipse(mouseX,mouseY,2,2);

  text("some text",20,30);
  text("some text",width-80,30);
  text("some text",20,height-30);
  text("some text",width-80,height-30);

  hint(ENABLE_DEPTH_TEST);
}

Chrisir

no.

you need all my lines

djevazi

Working, but strange - sphere is jumping to the upper left corner. And another question - is it possible to compare 3d object and red brush coordinates, when one of them is in 3d, and another in 2d?

import peasy.*;
PeasyCam jcam;

void setup()
{
  jcam = new PeasyCam(this,200);
  size(800,800,P3D);
}

void draw()
{
  background(150);

  stroke(100);
  fill(255);
  sphereDetail(10,10);
  sphere(50);

  camera(); 
  noLights();

  hint(DISABLE_DEPTH_TEST);
  noLights();
  textMode(MODEL);

  noFill();
  stroke(255,0,0);
  ellipse(mouseX,mouseY,100,100);
  ellipse(mouseX,mouseY,50,50);
  ellipse(mouseX,mouseY,2,2);

  text("some text",20,30);
  text("some text",width-80,30);
  text("some text",20,height-30);
  text("some text",width-80,height-30);

  hint(ENABLE_DEPTH_TEST);
}

Chrisir

size should always be first line in setup

also can't you call peasycam at begin of draw?

also peasy has its own hud which is much better than mine (mine is rather when you don't work with peasy)

see peasy reference

djevazi

Thanks, I will see. And what about my question about coordinates?

djevazi

Anyway, thanks for a quick response!

Chrisir

is it possible to compare 3d object and red brush coordinates, when one of them is in 3d, and another in 2d?

Good one.

Hm.....

djevazi

I want to create something like deform or sculpting brush, so comparing of coordinates is important.

Chrisir

I don't know...

Chrisir

Of course there is screenX, screenY to get the 2D coords of something to compare to mouse

djevazi

yes, I thinking of screenX and screenY too.

Chrisir

These are actual commands

Look them up in the reference

djevazi

I already used them in another projects, but now I begin to learn programming of 3d, and a lot of questions again)

Lord_of_the_Galaxy

@Chrisir Is it nescessary to call noLights() twice, once before and once after hint()? (Line 4 and 7 of ur code).

Chrisir

No ;-)