78 lines
2.3 KiB
C#
78 lines
2.3 KiB
C#
using System;
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using System.Collections.Generic;
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using UnityEngine;
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using T = System.Tuple<UnityEngine.GameObject, UnityEngine.Matrix4x4>;
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public class TreeTurtle : TurtleLSystemEnvironment
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{
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public GameObject branch;
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public float angle;
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private Matrix4x4 RootGrowth(float age)
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{
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return Matrix4x4.TRS(
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new Vector3(
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0.0f,
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0.3f,
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0.0f),
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Quaternion.identity,
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new Vector3(
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0.02f + age * 0.1f,
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0.02f + age * 0.1f,
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0.02f + age * 0.1f));
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}
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private Matrix4x4 BranchGrowth(float age)
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{
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return Matrix4x4.TRS(
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new Vector3(
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0.0f,
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1.8f,
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0.0f),
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Quaternion.identity,
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new Vector3(
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0.01f + age * 0.2f,
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0.5f + age * 0.5f,
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0.02f + age * 0.12f));
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}
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private Func<float[], Matrix4x4> Roation(Vector3 axis)
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{
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Matrix4x4 f(float[] args)
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{
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if (args.Length == 0)
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{
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return Matrix4x4.Rotate(Quaternion.AngleAxis(angle, axis));
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}
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else
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{
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return Matrix4x4.Rotate(Quaternion.AngleAxis(args[0], axis));
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}
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}
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return f;
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}
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protected override void initLiteralInterpretation()
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{
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turtleInterpretation = new Dictionary<string, Func<float[], T>>
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{
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{ "+", (float[] args) => new T(null, Roation(Vector3.back)(args)) },
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{ "-", (float[] args) => new T(null, Roation(Vector3.forward)(args)) },
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{ "\\", (float[] args) => new T(null, Roation(Vector3.down)(args)) },
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{ "/", (float[] args) => new T(null, Roation(Vector3.up)(args)) },
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{ "^", (float[] args) => new T(null, Roation(Vector3.left)(args)) },
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{ "&", (float[] args) => new T(null, Roation(Vector3.right)(args)) },
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{ "f", (float[] args) => new T(null, Matrix4x4.Translate(Vector3.up * args[0])) },
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{ "I", (float[] args) => new T(null, Matrix4x4.identity) },
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{ "R", (float[] args) => new T(branch, RootGrowth(args[0]))},
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{ "B", (float[] args) => new T(branch, BranchGrowth(args[0]))},
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//Wildcard how to represent any other symbol
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{ "*.*", (float[] args) => new T(branch, BranchGrowth(args[0]))}
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};
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}
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} |