Proctree: Procedural tree creation library (OpenGL) 2 Delphi versions
(VCL,FMX)
lazarus / 39-Graphics

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Boleeman · 2025-03-10 04:25

Found a great OpenGL Procedural tree creation library in Delphi
converted from JavaScript

https://github.com/tothpaul/Delphi.proctree

Might try to convert it into Lazarus

The tree looks really COOL.
Was initially a bit confused at it having 2 sources:

The vcl directory contains a VCL application to display this mesh with
OpenGL

with the OpenGL version for VCL using the corresponding OpenGL
functions:

  glAlphaFunc(GL_GREATER, 0.5);
  glEnable(GL_ALPHA_TEST);

The fmx directory contains a FMX application to display this mesh
under Firemonkey.


It is a Delphi version of the JavaScript from here:
https://github.com/supereggbert/proctree.js
A more complete JavaScript WebGL version is here:
https://github.com/supereggbert/SnappyTree

See the JavaScript version working on a webpage here:
http://www.snappytree.com/

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Boleeman · 2025-03-11 13:34

The Delphi program has:

uses
  Winapi.OpenGL, Winapi.OpenGLext,
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants,
System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Execute.GLPanel, Vcl.ComCtrls,
  Vcl.Imaging.jpeg, Vcl.Imaging.pngimage, Vcl.ExtCtrls, Vcl.StdCtrls,
Execute.Tree3D;

What are the Lazarus equivalents?