Simple 2D text on top of OpenGL

Core Library Questions

butterbr0t

Simple 2D text on top of OpenGL

in Core Library Questions • 1 year ago

Hi there,
I am displaying some 3D models in a openGL sketch. Now I just want to show the number of vertices and faces as plain text in the window. When I use:

text("vertices: "+ numVerts, 0, 0);

it does show up, but it looks ugly (compressed badly) when near and also it is placed inside the 3d scene, which is not what I want. I want it to be simple 2d text in the lower left corner of my sketch, and stay there put no matter what the 3d scene is rotated or what not.

How would I do that?
Cheers

Replies(4)

hellochar

Re: Simple 2D text on top of OpenGL

1 year ago

Make a call to "camera()" between your 2D and 3D drawing. For example:

void draw() {
background(0);
translate(width/2, height/2);
rotateX(millis() / 1000f);
rotateY(millis() / 800f);
rotateZ(millis() / 700f);
lights();
box(100);
camera(); //resets viewport to 2D equivalent
stroke(255);
text("hi", 100, 100);
}

butterbr0t

Re: Simple 2D text on top of OpenGL

1 year ago

Thanks :)

Chrisir

Re: Simple 2D text on top of OpenGL

1 year ago

or textMode?

quote:

Sets the way text draws to the screen. In the default configuration (the MODEL mode), it's possible to rotate, scale, and place letters in two and three dimensional space.

Changing to SCREEN mode draws letters directly to the front of the window and greatly increases rendering quality and speed when used with the P2D and P3D renderers. textMode(SCREEN) with OPENGL and JAVA2D (the default) renderers will generally be slower, though pixel accurate with P2D and P3D. With textMode(SCREEN), the letters draw at the actual size of the font (in pixels) and therefore calls to textSize() will not affect the size of the letters. To create a font at the size you desire, use the "Create font..." option in the Tools menu, or use the createFont() function. When using textMode(SCREEN), any z-coordinate passed to a text() command will be ignored, because your computer screen is...flat!

Chrisir

butterbr0t

Re: Simple 2D text on top of OpenGL

1 year ago

Sounds good as well, I'll try that one also, thank you!

EDIT: got removed in version 2.0!

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