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using System;
using System.Numerics;
using System.Collections.Generic;
using System.Linq;
using OpenTK;
using OpenTK.Graphics;
using OpenTK.Graphics.OpenGL4;
namespace Lsys
{
public class draw_sys
{
private Quaterniond rotationQuat;
private Vector3d position;
private Vector3d forwardVector;
private Vector3d upvector;
private Vector3d rightVector;
public List<Vector3d> vertices = new List<Vector3d>();
public List<Vector3d> vertices2 = new List<Vector3d>();
// float x = 0.1f;
// float y = 0.01f;
public draw_sys ()
{
rotationQuat = Quaterniond.Identity;
forwardVector = new Vector3d(0.1, 0, 0);
upvector = new Vector3d (0, 0.1, 0);
rightVector = new Vector3d (0.01, 0, 0);//Vector3d.Cross (upvector, forwardVector);
}
public void forward(double distance, bool draw){
Vector3d moveVector = Vector3d.Transform (forwardVector * distance, rotationQuat);
Vector3d oldPosition = position;
position += moveVector;
if (draw) {
vertices.Add (oldPosition);
vertices.Add (-position);
vertices.Add (oldPosition);
vertices.Add (-position);
// vertices.Add (new Vector3d (-oldPosition.Y, -oldPosition.X, 0));
// vertices.Add (new Vector3d (-position.Y, position.X, 0));
// vertices.Add (new Vector3d (oldPosition.Y, -oldPosition.X, 0));
// vertices.Add (new Vector3d (position.Y, position.X, 0));
} else {
vertices2.Add (oldPosition);
vertices2.Add (-position);
vertices2.Add (oldPosition);
vertices2.Add (-position);
//
// vertices2.Add (new Vector3d (-oldPosition.X, -oldPosition.Y, oldPosition.Z));
// vertices2.Add (new Vector3d (-position.X, position.Y, position.Z));
// vertices2.Add (new Vector3d (oldPosition.X, -oldPosition.Y, oldPosition.Z));
// vertices2.Add (new Vector3d (position.X, position.Y, position.Z));
}
// vertices.Add (new Vector3 (-x, -y, 0.0f));//-oldPosition.X, -oldPosition.Y, oldPosition.Z));
// vertices.Add (new Vector3 (-x, y, 0.0f));
// vertices.Add (new Vector3 (x, -y, 0.0f));
// vertices.Add (new Vector3 (x, y, 0.0f));
// x += 0.1f; y += 0.2f;
}
public void Yaw(double angle){
rotationQuat *= new Quaterniond (upvector, angle);
}
public void Pitch(double angle){
rotationQuat *= new Quaterniond (rightVector, angle);
}
public void Roll(double angle){
rotationQuat *= new Quaterniond (forwardVector, angle);
}
public List<Vector3d>draw_please(string lsys){
string start = "F";
string[] tmp = new string[10];
tmp [0] = lsys;
for(int n = 0; n < 3; n++)
start = start.Replace ("F", tmp[0]);
for (int i = 0; i < start.Length; i++) {
if (start [i] == 'F') {
forward (0.2, true);
}
if (start [i] == '+')
Yaw (90);
if (start [i] == '-')
Yaw (-90);
if (start [i] == '[') {
Roll (-5);
forward (0.2f, false);
}
if (start [i] == ']') {
Pitch (5);
for (int j = 0; j < vertices2.Count; j++) {
vertices.Add (vertices2.ElementAt (j));
}
vertices2.Clear ();
}
}
return vertices;
}
}
} |
