324 lines
13 KiB
C#
324 lines
13 KiB
C#
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using UnityEngine;
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using System.Collections;
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using System.Collections.Generic;
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using System.Threading;
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namespace Dreamteck.Splines
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{
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[RequireComponent(typeof(MeshFilter))]
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[RequireComponent(typeof(MeshRenderer))]
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[AddComponentMenu("Dreamteck/Splines/Users/Spline Mesh")]
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public partial class SplineMesh : MeshGenerator
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{
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//Mesh data
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[SerializeField]
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[HideInInspector, UnityEngine.Serialization.FormerlySerializedAs("channels")]
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private List<Channel> _channels = new List<Channel>();
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private bool _useLastResult = false;
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private List<TS_Mesh> _combineMeshes = new List<TS_Mesh>();
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protected override string meshName => "Custom Mesh";
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private Matrix4x4 _vertexMatrix = new Matrix4x4();
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private Matrix4x4 _normalMatrix = new Matrix4x4();
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private SplineSample _lastResult = new SplineSample(), _modifiedResult = new SplineSample();
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protected override void Awake()
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{
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base.Awake();
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#if UNITY_EDITOR
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for (int i = 0; i < _channels.Count; i++)
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{
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for (int j = 0; j < _channels[i].GetMeshCount(); j++)
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{
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_channels[i].GetMesh(j).Refresh();
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}
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}
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#endif
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}
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protected override void Reset()
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{
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base.Reset();
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AddChannel("Channel 1");
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}
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public void RemoveChannel(int index)
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{
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_channels.RemoveAt(index);
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Rebuild();
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}
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public void SwapChannels(int a, int b)
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{
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if (a < 0 || a >= _channels.Count || b < 0 || b >= _channels.Count) return;
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Channel temp = _channels[b];
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_channels[b] = _channels[a];
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_channels[a] = temp;
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Rebuild();
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}
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public Channel AddChannel(Mesh inputMesh, string name)
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{
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Channel channel = new Channel(name, inputMesh, this);
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_channels.Add(channel);
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return channel;
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}
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public Channel AddChannel(string name)
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{
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Channel channel = new Channel(name, this);
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_channels.Add(channel);
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return channel;
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}
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public int GetChannelCount()
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{
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return _channels.Count;
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}
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public Channel GetChannel(int index)
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{
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return _channels[index];
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}
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protected override void BuildMesh()
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{
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base.BuildMesh();
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Generate();
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}
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private void Generate()
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{
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int meshCount = 0;
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for (int i = 0; i < _channels.Count; i++)
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{
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if (_channels[i].GetMeshCount() == 0) continue;
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if (_channels[i].autoCount)
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{
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float avgBounds = 0f;
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for (int j = 0; j < _channels[i].GetMeshCount(); j++)
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{
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avgBounds += _channels[i].GetMesh(j).bounds.size.z;
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}
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if (_channels[i].GetMeshCount() > 1)
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{
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avgBounds /= _channels[i].GetMeshCount();
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}
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if (avgBounds > 0f)
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{
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float length = CalculateLength(_channels[i].clipFrom, _channels[i].clipTo);
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int newCount = Mathf.RoundToInt(length / avgBounds);
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if (newCount < 1)
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{
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newCount = 1;
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}
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_channels[i].count = newCount;
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}
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}
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meshCount += _channels[i].count;
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}
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if(meshCount == 0)
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{
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_tsMesh.Clear();
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return;
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}
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if (_combineMeshes.Count < meshCount)
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{
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_combineMeshes.AddRange(new TS_Mesh[meshCount - _combineMeshes.Count]);
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}
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else if (_combineMeshes.Count > meshCount)
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{
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_combineMeshes.RemoveRange((_combineMeshes.Count - 1) - (_combineMeshes.Count - meshCount), _combineMeshes.Count - meshCount);
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}
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int combineMeshIndex = 0;
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for (int i = 0; i < _channels.Count; i++)
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{
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if (_channels[i].GetMeshCount() == 0) continue;
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_channels[i].ResetIteration();
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_useLastResult = false;
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double step = 1.0 / _channels[i].count;
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double space = step * _channels[i].spacing * 0.5;
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switch (_channels[i].type)
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{
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case Channel.Type.Extrude:
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for (int j = 0; j < _channels[i].count; j++)
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{
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double from = DMath.Lerp(_channels[i].clipFrom, _channels[i].clipTo, j * step + space);
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double to = DMath.Lerp(_channels[i].clipFrom, _channels[i].clipTo, j * step + step - space);
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if (_combineMeshes[combineMeshIndex] == null)
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{
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_combineMeshes[combineMeshIndex] = new TS_Mesh();
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}
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Extrude(_channels[i], _combineMeshes[combineMeshIndex], from, to);
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combineMeshIndex++;
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}
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if (space == 0f) _useLastResult = true;
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break;
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case Channel.Type.Place:
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for (int j = 0; j < _channels[i].count; j++)
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{
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if (_combineMeshes[combineMeshIndex] == null)
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{
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_combineMeshes[combineMeshIndex] = new TS_Mesh();
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}
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Place(_channels[i], _combineMeshes[combineMeshIndex], DMath.Lerp(_channels[i].clipFrom, _channels[i].clipTo, (double)j / Mathf.Max(_channels[i].count - 1, 1)));
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combineMeshIndex++;
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}
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break;
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}
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}
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_tsMesh.Combine(_combineMeshes);
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}
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private void Place(Channel channel, TS_Mesh target, double percent)
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{
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Channel.MeshDefinition definition = channel.NextMesh();
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if (target == null) target = new TS_Mesh();
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definition.Write(target, channel.overrideMaterialID ? channel.targetMaterialID : -1);
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Vector2 channelOffset = channel.NextRandomOffset();
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Quaternion channelRotation = channel.NextRandomQuaternion();
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var customValues = channel.GetCustomPlaceValues(percent);
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Vector2 finalOffset = channelOffset + customValues.Item1 + new Vector2(offset.x, offset.y);
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Quaternion finalRotation = channelRotation * Quaternion.AngleAxis(rotation, Vector3.forward) * customValues.Item2;
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Vector3 finalScale = channel.NextPlaceScale();
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Evaluate(percent, ref evalResult);
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ModifySample(ref evalResult);
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Vector3 originalNormal = evalResult.up;
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Vector3 originalRight = evalResult.right;
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Vector3 originalDirection = evalResult.forward;
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if (channel.overrideNormal)
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{
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evalResult.forward = Vector3.Cross(evalResult.right, channel.customNormal);
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evalResult.up = channel.customNormal;
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}
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if (!channel.scaleModifier.useClippedPercent)
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{
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UnclipPercent(ref evalResult.percent);
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}
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Vector3 scaleMod = channel.scaleModifier.GetScale(evalResult);
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finalScale.x *= customValues.Item3.x * scaleMod.x;
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finalScale.y *= customValues.Item3.y * scaleMod.y;
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finalScale.z *= customValues.Item3.z * scaleMod.z;
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if (!channel.scaleModifier.useClippedPercent)
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{
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ClipPercent(ref evalResult.percent);
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}
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float resultSize = GetBaseSize(evalResult);
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_vertexMatrix.SetTRS(evalResult.position + originalRight * (finalOffset.x * resultSize) + originalNormal * (finalOffset.y * resultSize) + originalDirection * offset.z, //Position
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evalResult.rotation * finalRotation, //Rotation
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finalScale * resultSize ); //Scale
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_normalMatrix = _vertexMatrix.inverse.transpose;
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for (int i = 0; i < target.vertexCount; i++)
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{
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target.vertices[i] = _vertexMatrix.MultiplyPoint3x4(definition.vertices[i]);
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target.normals[i] = _normalMatrix.MultiplyVector(definition.normals[i]);
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}
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for (int i = 0; i < Mathf.Min(target.colors.Length, definition.colors.Length); i++)
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{
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target.colors[i] = definition.colors[i] * evalResult.color * color;
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}
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}
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private void Extrude(Channel channel, TS_Mesh target, double from, double to)
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{
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Channel.MeshDefinition definition = channel.NextMesh();
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if (target == null) target = new TS_Mesh();
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definition.Write(target, channel.overrideMaterialID ? channel.targetMaterialID : -1);
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Vector2 uv = Vector2.zero;
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Vector3 trsVector = Vector3.zero;
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Vector3 channelOffset = channel.NextRandomOffset();
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Vector3 channelScale = channel.NextRandomScale();
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float channelRotation = channel.NextRandomAngle();
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for (int i = 0; i < definition.vertexGroups.Count; i++)
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{
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if (_useLastResult && i == definition.vertexGroups.Count)
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{
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evalResult = _lastResult;
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}
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else
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{
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Evaluate(DMath.Lerp(from, to, definition.vertexGroups[i].percent), ref evalResult);
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}
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ModifySample(ref evalResult, ref _modifiedResult);
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Vector3 originalNormal = _modifiedResult.up;
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Vector3 originalRight = _modifiedResult.right;
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Vector3 originalDirection = _modifiedResult.forward;
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if (channel.overrideNormal)
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{
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_modifiedResult.forward = Vector3.Cross(_modifiedResult.right, channel.customNormal);
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_modifiedResult.up = channel.customNormal;
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}
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var customValues = channel.GetCustomExtrudeValues(_modifiedResult.percent);
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Vector3 finalOffset = offset + channelOffset + (Vector3)customValues.Item1;
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float finalRotation = rotation + channelRotation + customValues.Item2;
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Vector3 finalScale = channelScale;
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if (!channel.scaleModifier.useClippedPercent)
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{
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UnclipPercent(ref _modifiedResult.percent);
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}
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Vector2 scaleMod = channel.scaleModifier.GetScale(_modifiedResult);
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if (!channel.scaleModifier.useClippedPercent)
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{
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ClipPercent(ref _modifiedResult.percent);
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}
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finalScale.x *= customValues.Item3.x * scaleMod.x;
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finalScale.y *= customValues.Item3.y * scaleMod.y;
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finalScale.z = 1f;
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float resultSize = _modifiedResult.size;
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_vertexMatrix.SetTRS(_modifiedResult.position + originalRight * (finalOffset.x * resultSize) + originalNormal * (finalOffset.y * resultSize) + originalDirection * offset.z, //Position
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_modifiedResult.rotation * Quaternion.AngleAxis(finalRotation, Vector3.forward), //Rotation
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finalScale * resultSize); //Scale
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_normalMatrix = _vertexMatrix.inverse.transpose;
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if (i == 0)
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{
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_lastResult = evalResult;
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}
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for (int n = 0; n < definition.vertexGroups[i].ids.Length; n++)
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{
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int index = definition.vertexGroups[i].ids[n];
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trsVector = definition.vertices[index];
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trsVector.z = 0f;
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target.vertices[index] = _vertexMatrix.MultiplyPoint3x4(trsVector);
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trsVector = definition.normals[index];
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target.normals[index] = _normalMatrix.MultiplyVector(trsVector);
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target.colors[index] = target.colors[index] * _modifiedResult.color * color;
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if (target.uv.Length > index)
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{
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uv = target.uv[index];
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switch (channel.overrideUVs)
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{
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case Channel.UVOverride.ClampU: uv.x = (float)_modifiedResult.percent; break;
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case Channel.UVOverride.ClampV: uv.y = (float)_modifiedResult.percent; break;
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case Channel.UVOverride.UniformU: uv.x = CalculateLength(0.0, ClipPercent(_modifiedResult.percent)); break;
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case Channel.UVOverride.UniformV: uv.y = CalculateLength(0.0, ClipPercent(_modifiedResult.percent)); break;
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}
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target.uv[index] = new Vector2(uv.x * uvScale.x * channel.uvScale.x, uv.y * uvScale.y * channel.uvScale.y);
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target.uv[index] += uvOffset + channel.uvOffset;
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}
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}
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}
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}
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}
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}
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