/// <summary>
/// 半球防空区域
/// </summary>
/// <param name="pos"></param>
/// <param name="radius"></param>
/// <param name="angle">默认为半球，通过修改角度可以修改球的缺省</param>
/// <param name="meshFilter"></param>
public static void DrawHemisphere(Vector3 pos, float radius, MeshFilter meshFilter, int angle = 90)
{
meshFilter.mesh.vertices = PhysicsMath.GetVertices(pos, radius, angle); // 圆球形
meshFilter.mesh.triangles = PhysicsMath.Sort3(angle);
meshFilter.mesh.RecalculateBounds(); // 重置范围
meshFilter.mesh.RecalculateNormals(); // 重置法线
meshFilter.mesh.RecalculateTangents(); // 重置切线
}
public EllipseGraphic(Vector2 center, Vector2 radius)
{
var points = PhysicsMath.GetEllipsePoints(radius.x, radius.y, center, 60);
m_Poses = new List <Vector3>();
foreach (var item in points)
{
m_Poses.Add(item);
}
}
/// <summary>
/// 创建通用多边形区域
/// </summary>
/// <param name="id"> 命令ID,用作字典key </param>
/// <param name="list">下底面点链表</param>
/// <param name="height">高度</param>
public void CreatePolygon(List <Vector3> list, float height, Color color)
{
Vector3[] vector3s = PhysicsMath.CheckVector(list); // 使数组逆时针排序
Mesh mesh = GLDraw.CreatePolygon(vector3s, height, color.Int32()); // 画出图形
Game.GraphicsModule.AddGraphics(Camera.main, () =>
{
ShapeMaterial.SetPass(0);
Graphics.DrawMeshNow(mesh, Matrix4x4.identity);
});
}
/// <summary>
/// 创建扇形防空区
/// </summary>
/// <param name="id"> 命令ID,用作字典key </param>
/// <param name="origin">起始点</param>
/// <param name="tarPoint">水平最远距离点</param>
/// <param name="alpha">横向张角</param>
/// <param name="theta">纵向张角</param>
public void CreateSector(Vector3 origin, Vector3 tarPoint, float alpha, float theta, Color color)
{
Vector3[] vertices = PhysicsMath.GetSectorPoints_2(origin, tarPoint, alpha, theta);
Mesh mesh = GLDraw.CreatePolygon(vertices, color.Int32());
Game.GraphicsModule.AddGraphics(Camera.main, () =>
{
ShapeMaterial.SetPass(0);
Graphics.DrawMeshNow(mesh, Matrix4x4.identity);
});
}
/// <summary>
/// 创建通用多边形区域
/// </summary>
/// <param name="id"> 命令ID,用作字典key </param>
/// <param name="list">下底面点链表</param>
/// <param name="height">高度</param>
public void CreatePolygon(int id, List <Vector3> list, float height, Color Fillcolor, Color BoradColor)
{
LineRenderer[] lineRenderers = new LineRenderer[4];
List <GameObject> meshList = GetMeshPrefab(lineRenderers, 1); // 获取mesh
meshDic.Add(id, meshList); // 加入字典
MeshFilter meshFilter = meshList[0].GetComponent <MeshFilter>(); // 获取meshfilter
meshList[0].GetComponent <MeshRenderer>().material.color = Fillcolor;
Vector3[] vector3s = PhysicsMath.CheckVector(list); // 使数组逆时针排序
DrawTriangles.DrawPolygon(vector3s, height, meshFilter, lineRenderers, BoradColor); // 画出图形
}
/// <summary>
/// 创建扇形防空区
/// </summary>
/// <param name="id"> 命令ID,用作字典key </param>
/// <param name="origin">起始点</param>
/// <param name="tarPoint">水平最远距离点</param>
/// <param name="alpha">横向张角</param>
/// <param name="theta">纵向张角</param>
public void CreateSector(int id, Vector3 origin, Vector3 tarPoint, float alpha, float theta, Color Fillcolor, Color BoradColor)
{
LineRenderer[] lineRenderers = new LineRenderer[4];
List <GameObject> meshList = GetMeshPrefab(lineRenderers, 1);
meshDic.Add(id, meshList);
MeshFilter meshFilter = meshList[0].GetComponent <MeshFilter>();
meshList[0].GetComponent <MeshRenderer>().material.color = Fillcolor;
Vector3[] vertices = PhysicsMath.GetSectorPoints_2(origin, tarPoint, alpha, theta);
DrawTriangles.DrawPolygon(vertices, meshFilter, lineRenderers, BoradColor);
}
public Dictionary <int, List <GameObject> > meshDic = new Dictionary <int, List <GameObject> >(); // 命令与mesh对应字典
/// <summary>
/// 创建圆柱形区域
/// </summary>
/// <param name="id"> 命令ID,用作字典key </param>
/// <param name="point"> 圆心点 </param>
/// <param name="radius"> 半径 </param>
/// <param name="height"> 高度 </param>
public void CreateCylinder(int id, Vector3 point, float radius, float height, Color Fillcolor, Color BoradColor)
{
LineRenderer[] lineRenderers = new LineRenderer[4];
List <GameObject> meshList = GetMeshPrefab(lineRenderers, 1); // 获取mesh
meshDic.Add(id, meshList); // 加入字典
MeshFilter meshFilter = meshList[0].GetComponent <MeshFilter>(); // 获取meshfilter
meshList[0].GetComponent <MeshRenderer>().material.color = Fillcolor;
Vector3[] vertices = PhysicsMath.GetCirclePoints(point, radius); // 获取点集
DrawTriangles.DrawCylinder(vertices, height, meshFilter, lineRenderers, BoradColor); // 画出图形
}
public BezierGraphic(Vector3[] originPoints, uint[] segTypes)
{
List <Vector3> points = new List <Vector3>();
int index = 0;
for (int i = 0; i < segTypes.Length; i++)
{
switch (segTypes[i])
{
case 0: // 直线,只取2个点
AddifNotContain(points, new List <Vector3>()
{
originPoints[index++], originPoints[index]
});
break;
case 1: // 二次贝塞尔, 取3个点
Vector3[] bezier2 = new Vector3[3];
bezier2[0] = originPoints[index++];
bezier2[1] = originPoints[index++];
bezier2[2] = originPoints[index];
AddifNotContain(points, PhysicsMath.GetBezierList(bezier2));
break;
case 2: // 三次贝塞尔, 取4个点
Vector3[] bezier3 = new Vector3[4];
bezier3[0] = originPoints[index++];
bezier3[1] = originPoints[index++];
bezier3[2] = originPoints[index++];
bezier3[3] = originPoints[index];
AddifNotContain(points, PhysicsMath.GetBezierList(bezier3));
break;
default:
break;
}
}
m_Poses = points;
void AddifNotContain(List <Vector3> _drawPath, List <Vector3> _pointsAdd)
{
if (_drawPath.Count > 0 && _drawPath.End() == _pointsAdd[0])
{
_pointsAdd.RemoveAt(0);
}
_drawPath.AddRange(_pointsAdd);
} // 内部函数, 去重添加
}
/// <summary>
/// 创建空中走廊
/// </summary>
/// <param name="id"> 命令ID,用作字典key </param>
/// <param name="list">中心点链表</param>
/// <param name="width">宽度</param>
/// <param name="height">高度</param>
public void CreateAirCorridorSpace(int id, List <Vector3> list, float width, float height, Color Fillcolor)
{
LineRenderer[] lineRenderers = new LineRenderer[4];
List <GameObject> meshList = GetMeshPrefab(lineRenderers, 1); // 获取mesh
meshDic.Add(id, meshList); // 加入字典
MeshFilter meshFilter = meshList[0].GetComponent <MeshFilter>(); // 获取meshfilter
meshList[0].GetComponent <MeshRenderer>().material.color = Fillcolor;
//Vector3[] vertices = PhysicsMath.GetAirCorridorSpace(list, width, height); // 获取点集
//DrawTriangles.DrawAirCorridorSpace(vertices, meshFilter, lineRenderers); // 画出图形
Vector3[] bottomPoints = PhysicsMath.GetAirSpaceBottomPoints(list, width, height);
Vector3[] vertices = PhysicsMath.GetAirBottomSpaceWithSector(bottomPoints.ToList(), width);
DrawTriangles.GetAirSpaceWithSector(vertices.ToList(), width, height, list.Count - 1, meshFilter);
}
/// <summary>
/// 画数据折线
/// </summary>
private void DrawLine(VertexHelper vh)
{
foreach (var data in datas)
{
Vector2[] pixelPoints = new Vector2[data.Length];
for (int i = 0; i < data.Length; i++)
{
pixelPoints[i].x = (data[i].x - axleMinValue.x) / axleMaxValue.x * width;
pixelPoints[i].y = (data[i].y - axleMinValue.y) / axleMaxValue.y * height;
pixelPoints[i] += offset;
}
UIVertex[] verts = new UIVertex[4];
for (int i = 0; i < verts.Length; i++)
{
verts[i].color = lineColor;
}
for (int i = 0; i < pixelPoints.Length - 1; i++)
{
SetVerts(pixelPoints[i], pixelPoints[i + 1], lineWidth, verts);
vh.AddUIVertexQuad(verts);
}
// 点状数据
//foreach (var item in pixelPoints)
//{
// verts[0].position = item;
// verts[1].position = new Vector2(5, 0) + item;
// verts[2].position = new Vector2(5, 5) + item;
// verts[3].position = new Vector2(0, 5) + item;
// vh.AddUIVertexQuad(verts);
//}
void SetVerts(Vector2 _start, Vector2 _end, float _width, UIVertex[] _verts)
{
Vector2[] tmp = PhysicsMath.GetRect(_start, _end, _width);
_verts[0].position = tmp[0];
_verts[1].position = tmp[1];
_verts[2].position = tmp[3];
_verts[3].position = tmp[2];
}
}
}
protected override void OnUpdate()
{
Entities.ForEach((UnityEngine.BoxCollider2D collider) =>
{
// Convert the collider if it's valid.
if (ConversionUtilities.CanConvertCollider(collider))
{
try
{
var lossyScale = new float3(collider.transform.lossyScale).xy;
if (math.any(!math.isfinite(lossyScale)) || math.any(lossyScale <= 0.0f))
{
throw new ArgumentException("Transform XY scale cannot be zero or Infinite/NaN.", "Transform XY scale.");
}
var localToWorld = ConversionUtilities.GetColliderLocalToWorld(collider);
var size = collider.size;
var geometry = new BoxGeometry
{
Center = new float3(localToWorld.MultiplyPoint(collider.offset)).xy,
Size = new float2(size.x * lossyScale.x, size.y * lossyScale.y),
Angle = PhysicsMath.ZRotationFromQuaternion(localToWorld.rotation),
BevelRadius = math.max(collider.edgeRadius, PhysicsSettings.Constants.MinimumConvexRadius),
};
geometry.Validate();
var colliderBlob = PhysicsBoxCollider.Create(
geometry,
ConversionUtilities.GetCollisionFilterFromCollider(collider),
ConversionUtilities.GetPhysicsMaterialFromCollider(collider)
);
// Submit the collider for conversion.
m_ColliderConversionSystem.SubmitCollider(collider, ref colliderBlob);
}
catch (ArgumentException exception)
{
UnityEngine.Debug.LogWarning($"{collider.name}: {exception.Message}", collider);
}
}
});
}
// Get collider local to world as defined relative to any attached Rigidbody2D.
public static Matrix4x4 GetColliderLocalToWorld(Collider2D collider)
{
// If no attached rigidbody or we're attached to a rigidbody but it's on the same GameObject
// then we simply use identity as the relative transform.
var attachedRigidbody = collider.attachedRigidbody;
if (attachedRigidbody == null || attachedRigidbody.gameObject == collider.gameObject)
{
return(Matrix4x4.identity);
}
// Calculate relative to the attached rigidbody.
var rigidbodyTransform = attachedRigidbody.transform;
var bodyInverseRotation = Quaternion.Inverse(PhysicsMath.ZQuaternionFromQuaternion(rigidbodyTransform.rotation));
var bodyInversePosition = bodyInverseRotation * -rigidbodyTransform.position;
var localToWorld = collider.transform.localToWorldMatrix;
return(Matrix4x4.TRS(bodyInversePosition, bodyInverseRotation, Vector3.one) * localToWorld);
}
public override void GetVertexs(ref List <UIVertex> vertexs)
{
if (m_Poses.Count < 2)
{
return;
}
int count = m_Poses.Count;
Vector2 dir = PhysicsMath.GetHorizontalDir((m_Poses[1] - m_Poses[0]).XY());
vertexs.Add(new UIVertex()
{
position = m_Poses[0].XY() - dir * width, color = color,
});
vertexs.Add(new UIVertex()
{
position = m_Poses[0].XY() + dir * width, color = color,
});
for (int i = 1; i < count - 1; i++)
{
dir = PhysicsMath.GetHorizontalDir((m_Poses[i + 1] - m_Poses[i - 1]).XY());
vertexs.Add(new UIVertex()
{
position = m_Poses[i].XY() - dir * width, color = color,
});
vertexs.Add(new UIVertex()
{
position = m_Poses[i].XY() + dir * width, color = color
});
}
dir = PhysicsMath.GetHorizontalDir((m_Poses[count - 1] - m_Poses[count - 2]).XY());
vertexs.Add(new UIVertex()
{
position = m_Poses[count - 1].XY() - dir * width, color = color,
});
vertexs.Add(new UIVertex()
{
position = m_Poses[count - 1].XY() + dir * width, color = color,
});
}
protected Vector2 CollisionCheck(Vector3 position, Vector2 force)
{
if (security > 25)
{
return(force);
}
boxRaycast = Physics2D.BoxCast(position, collisionBox.bounds.size, 0.0f, force.normalized, Mathf.Infinity, collisionMask);
security++;
if (boxRaycast.collider != null)
{
if (boxRaycast.distance > force.magnitude * Time.deltaTime)
{
return(force);
}
if (boxRaycast.transform.tag == "MoveableObj")
{
force += boxRaycast.normal * Time.deltaTime;
}
Vector2 normalHit = boxRaycast.normal;
float angle = Mathf.Abs((Vector2.Angle(normalHit, force.normalized) - 90) * Mathf.Deg2Rad);
if (Mathf.Approximately(Mathf.Sin(angle), 0))
{
return(force);
}
float range = skinWidth / Mathf.Sin(angle);
if (boxRaycast.distance - range > 0)
{
Vector2 snap = force.normalized * (boxRaycast.distance - range);
// snap = Vector2.ClampMagnitude(snap, force.magnitude * Time.deltaTime);
position += (Vector3)snap;
totalSnap += (Vector3)snap;
}
Vector2 normalForce = PhysicsMath.NormalizeForce2D(force, normalHit);
force += normalForce;
force = ApplicationOfFriction(normalForce.magnitude, force, staticFriction);
force = CollisionCheck(position, force);
}
return(force);
}
public unsafe void Draw()
{
if (VertexCount < 3)
{
return;
}
BeginLineStrip(Color);
fixed(byte *array = Vertices)
{
float2 *vertexArray = (float2 *)array;
for (var i = 0; i < VertexCount; ++i)
{
var vertex = PhysicsMath.mul(Transform, vertexArray[i]);
DrawLineVertex(vertex);
}
DrawLineVertex(PhysicsMath.mul(Transform, vertexArray[0]));
}
EndDraw();
}
private static unsafe void DrawComposite(
Collider *collider,
ref PhysicsTransform worldTransform,
ref PhysicsDebugStreamSystem.Context outputStream,
Color colliderColor)
{
switch (collider->ColliderType)
{
case ColliderType.Compound:
{
var compoundCollider = (PhysicsCompoundCollider *)collider;
var children = compoundCollider->Children;
for (var i = 0; i < children.Length; ++i)
{
ref PhysicsCompoundCollider.Child child = ref children[i];
var colliderWorldTransform = PhysicsMath.mul(worldTransform, child.CompoundFromChild);
DrawCollider(children[i].Collider, ref colliderWorldTransform, ref outputStream, colliderColor);
}
return;
}
}
/// <summary>
/// 创建紫色杀伤盒
/// </summary>
/// <param name="id"> 命令ID,用作字典key </param>
/// <param name="list">底面四点链表</param>
/// <param name="lower">下限高度</param>
/// <param name="Ceiling">上限高度</param>
public void CreateKillBox(List <Vector3> list, float lower, float Ceiling, Color color)
{
// 第一个杀伤盒
Vector3[] vector3s1 = PhysicsMath.CheckVector(list); // 使数组逆时针排序
Mesh mesh0 = GLDraw.CreatePolygon(vector3s1, lower, color.Int32()); // 画出图形
// 第二个杀伤盒
List <Vector3> CeilingList = new List <Vector3>(); // 中层顶点集合
foreach (var item in list)
{
CeilingList.Add(item + Vector3.up * lower);
}
Vector3[] vector3s2 = PhysicsMath.CheckVector(CeilingList); // 使数组逆时针排序
Mesh mesh1 = GLDraw.CreatePolygon(vector3s2, Ceiling - lower, color.Int32()); // 画出图形
Game.GraphicsModule.AddGraphics(Camera.main, () =>
{
ShapeMaterial.SetPass(0);
Graphics.DrawMeshNow(mesh0, Matrix4x4.identity);
Graphics.DrawMeshNow(mesh1, Matrix4x4.identity);
});
}
public void MassProperties_BuiltFromChildren_MatchesExpected()
{
void TestCompoundBox(PhysicsTransform transform)
{
// Create a unit box
var boxCollider = PhysicsBoxCollider.Create(new BoxGeometry
{
Size = new float2(1f),
Center = transform.Translation,
Angle = 0f,
BevelRadius = 0.0f
});
// Create a compound of mini boxes, matching the volume of the single box
var miniBox = PhysicsBoxCollider.Create(new BoxGeometry
{
Size = new float2(0.5f),
Center = float2.zero,
Angle = 0f,
BevelRadius = 0.0f
});
const uint UserData = 0xDEADBEEF;
const int ChildrenCount = 4;
var childrenTransforms = new NativeArray <PhysicsTransform>(ChildrenCount, Allocator.Temp, NativeArrayOptions.UninitializedMemory)
{
[0] = new PhysicsTransform(new float2(-0.25f, -0.25f), float2x2.identity),
[1] = new PhysicsTransform(new float2(0.25f, -0.25f), float2x2.identity),
[2] = new PhysicsTransform(new float2(0.25f, 0.25f), float2x2.identity),
[3] = new PhysicsTransform(new float2(-0.25f, 0.25f), float2x2.identity),
};
var children = new NativeArray <PhysicsCompoundCollider.ColliderBlobInstance>(ChildrenCount, Allocator.Temp, NativeArrayOptions.UninitializedMemory);
for (var i = 0; i < ChildrenCount; ++i)
{
children[i] = new PhysicsCompoundCollider.ColliderBlobInstance
{
Collider = miniBox,
CompoundFromChild = PhysicsMath.mul(transform, childrenTransforms[i])
};
}
var colliderBlob = PhysicsCompoundCollider.Create(children, UserData);
childrenTransforms.Dispose();
children.Dispose();
ref var collider = ref colliderBlob.GetColliderRef <PhysicsCompoundCollider>();
Assert.AreEqual(ColliderType.Compound, collider.ColliderType);
Assert.AreEqual(CollisionType.Composite, collider.CollisionType);
Assert.AreEqual(UserData, collider.UserData);
var boxMassProperties = boxCollider.Value.MassProperties;
var compoundMassProperties = colliderBlob.Value.MassProperties;
Assert.AreEqual(boxMassProperties.Area, compoundMassProperties.Area, 1e-3f, "Area incorrect.");
Assert.AreEqual(boxMassProperties.AngularExpansionFactor, compoundMassProperties.AngularExpansionFactor, 1e-3f, "AngularExpansionFactor incorrect.");
PhysicsAssert.AreEqual(boxMassProperties.MassDistribution.LocalCenterOfMass, compoundMassProperties.MassDistribution.LocalCenterOfMass, 1e-3f, "LocalCenterOfMass incorrect.");
Assert.AreEqual(boxMassProperties.MassDistribution.InverseInertia, compoundMassProperties.MassDistribution.InverseInertia, 1e-3f, "InverseInertia incorrect.");
boxCollider.Dispose();
colliderBlob.Dispose();
}
/// <summary>
/// 根据传参 路径点信息 创建路面：
/// 0 --- 2
/// | |
/// 1 --- 3
/// </summary>
/// <param name="meshFilter">路面网格</param>
/// <param name="_roadPoints">路点</param>
/// <param name="_width">路面宽度</param>
public static void CreateRoads(Terrain terrain, MeshFilter meshFilter, List <Vector3> wayPoints, float _width = 5)
{
if (wayPoints.Count < 2)
{
return; // 路点数量不能低于2个
}
List <Vector3> _roadPoints = wayPoints; // 取出路径点
List <Vector3> vertice = new List <Vector3>(); // 顶点
List <int> triangles = new List <int>(); // 三角形排序
List <Vector2> uv = new List <Vector2>(); // uv排序
Vector3 dir = PhysicsMath.GetHorizontalDir(_roadPoints[1], _roadPoints[0]); // 获取两点间的垂直向量
vertice.Add(_roadPoints[0] + dir * _width); // 添加初始顶点
vertice.Add(_roadPoints[0] - dir * _width);
uv.Add(Vector2.zero); // 添加初始顶点对应uv
uv.Add(Vector2.right);
for (int i = 1, count = _roadPoints.Count; i < count; i++)
{
// 添加由 路径点 生成的路面点集
dir = PhysicsMath.GetHorizontalDir(_roadPoints[i], _roadPoints[i - 1]);
vertice.Add(_roadPoints[i] + dir * _width);
vertice.Add(_roadPoints[i] - dir * _width);
// 添加三jio形排序
triangles.Add(2 * i - 2);
triangles.Add(2 * i);
triangles.Add(2 * i - 1);
triangles.Add(2 * i);
triangles.Add(2 * i + 1);
triangles.Add(2 * i - 1);
// 添加uv排序
if (i % 2 == 1)
{
uv.Add(Vector2.up);
uv.Add(Vector2.one);
}
else
{
uv.Add(Vector2.zero);
uv.Add(Vector2.right);
}
}
List <float> roadHeights = PointsFitToTerrain(terrain, ref vertice); // 路面高度适配地形
//TerrainUtility.ChangeHeights(terrain, _roadPoints.ToArray(), roadHeights.ToArray()); // 将道路整平
meshFilter.mesh.Clear();
meshFilter.mesh.vertices = vertice.ToArray();
meshFilter.mesh.triangles = triangles.ToArray();
meshFilter.mesh.uv = uv.ToArray();
meshFilter.mesh.RecalculateBounds(); // 重置范围
meshFilter.mesh.RecalculateNormals(); // 重置法线
meshFilter.mesh.RecalculateTangents(); // 重置切线
}
/// <summary>
/// 圆柱
/// </summary>
public static Mesh CreateCylinder(Vector3 buttomOrigin, float radius, float height, int colorInt = ColorInt32.white)
{
Vector3[] buttomSurface = PhysicsMath.GetCirclePoints(buttomOrigin, radius);
List <Vector3> verticesDown = new List <Vector3>();
List <Vector3> verticesUp = new List <Vector3>();
List <Vector3> vertices = new List <Vector3>();
List <int> triangles = new List <int>();
//上下面坐标赋值 数组转List
for (int i = 0; i < buttomSurface.Length; i++)
{
verticesDown.Add(buttomSurface[i]);
}
for (int i = 0; i < buttomSurface.Length; i++)
{
verticesUp.Add(buttomSurface[i] + new Vector3(0, height, 0));
}
//计算一个平面的点数量
int count = verticesDown.Count;
//将上下平面点合并
for (int i = 0; i < verticesDown.Count; i++)
{
vertices.Add(verticesDown[i]);
}
for (int i = 0; i < verticesUp.Count; i++)
{
vertices.Add(verticesUp[i]);
}
//获取底面和顶面的三角形排序
List <int> trianglesDown = PhysicsMath.DrawPolygon(verticesDown, false);
List <int> trianglesUp = PhysicsMath.DrawPolygon(verticesUp, true);
for (int i = 0; i < trianglesDown.Count; i++)
{
trianglesUp[i] += count;
}
//合并底面顶面三角形排序
for (int i = 0; i < trianglesDown.Count; i++)
{
triangles.Add(trianglesDown[i]);
}
for (int i = 0; i < trianglesUp.Count; i++)
{
triangles.Add(trianglesUp[i]);
}
//侧面三角形排序
for (int i = 0; i < count - 1; i++)
{
// 加上侧面的点集
vertices.Add(vertices[i]);
vertices.Add(vertices[i + 1]);
vertices.Add(vertices[i + count + 1]);
vertices.Add(vertices[i + count]);
// 侧面三角形排序
triangles.Add(2 * count + 1 + i * 4);
triangles.Add(2 * count + 0 + i * 4);
triangles.Add(2 * count + 3 + i * 4);
triangles.Add(2 * count + 1 + i * 4);
triangles.Add(2 * count + 3 + i * 4);
triangles.Add(2 * count + 2 + i * 4);
}
// 加上最后一个侧面的点集
vertices.Add(vertices[count - 1]);
vertices.Add(vertices[0]);
vertices.Add(vertices[count]);
vertices.Add(vertices[2 * count - 1]);
// 加上最后一个侧面的三角形排序
triangles.Add(vertices.Count - 3);
triangles.Add(vertices.Count - 4);
triangles.Add(vertices.Count - 1);
triangles.Add(vertices.Count - 3);
triangles.Add(vertices.Count - 1);
triangles.Add(vertices.Count - 2);
Color[] colors = new Color[vertices.Count];
Color color = colorInt.Color();
for (int i = 0; i < colors.Length; ++i)
{
colors[i] = color;
}
Mesh mesh = new Mesh
{
name = "Cylinder",
vertices = vertices.ToArray(),
triangles = triangles.ToArray(),
colors = colors,
};
mesh.RecalculateBounds(); // 重置范围
mesh.RecalculateNormals(); // 重置法线
mesh.RecalculateTangents(); // 重置切线
return(mesh);
}
static unsafe bool CastCollider(
Ray ray, ref float2x2 rotation,
ref DistanceProxy proxySource, ref DistanceProxy proxyTarget,
out ColliderCastHit hit)
{
hit = default;
var transformSource = new PhysicsTransform
{
Translation = ray.Origin,
Rotation = rotation
};
// Check we're not initially overlapped.
if ((proxySource.VertexCount < 3 || proxyTarget.VertexCount < 3) &&
OverlapQueries.OverlapConvexConvex(ref transformSource, ref proxySource, ref proxyTarget))
{
return(false);
}
// B = Source
// A = Target
var radiusSource = proxySource.ConvexRadius;
var radiusTarget = proxyTarget.ConvexRadius;
var totalRadius = radiusSource + radiusTarget;
var invRotation = math.inverse(rotation);
var sweepDirection = ray.Displacement;
var normal = float2.zero;
var lambda = 0.0f;
// Initialize the simplex.
var simplex = new Simplex();
simplex.Count = 0;
var vertices = &simplex.Vertex1;
// Get a support point in the inverse direction.
var indexTarget = proxyTarget.GetSupport(-sweepDirection);
var supportTarget = proxyTarget.Vertices[indexTarget];
var indexSource = proxySource.GetSupport(PhysicsMath.mul(invRotation, sweepDirection));
var supportSource = PhysicsMath.mul(transformSource, proxySource.Vertices[indexSource]);
var v = supportTarget - supportSource;
// Sigma is the target distance between polygons
var sigma = math.max(PhysicsSettings.Constants.MinimumConvexRadius, totalRadius - PhysicsSettings.Constants.MinimumConvexRadius);
const float tolerance = PhysicsSettings.Constants.LinearSlop * 0.5f;
var iteration = 0;
while (
iteration++ < PhysicsSettings.Constants.MaxGJKInterations &&
math.abs(math.length(v) - sigma) > tolerance
)
{
if (simplex.Count >= 3)
{
SafetyChecks.ThrowInvalidOperationException("ColliderCast Simplex must have less than 3 vertex.");
}
// Support in direction -supportV (Target - Source)
indexTarget = proxyTarget.GetSupport(-v);
supportTarget = proxyTarget.Vertices[indexTarget];
indexSource = proxySource.GetSupport(PhysicsMath.mul(invRotation, v));
supportSource = PhysicsMath.mul(transformSource, proxySource.Vertices[indexSource]);
var p = supportTarget - supportSource;
v = math.normalizesafe(v);
// Intersect ray with plane.
var vp = math.dot(v, p);
var vr = math.dot(v, sweepDirection);
if (vp - sigma > lambda * vr)
{
if (vr <= 0.0f)
{
return(false);
}
lambda = (vp - sigma) / vr;
if (lambda > 1.0f)
{
return(false);
}
normal = -v;
simplex.Count = 0;
}
// Reverse simplex since it works with B - A.
// Shift by lambda * r because we want the closest point to the current clip point.
// Note that the support point p is not shifted because we want the plane equation
// to be formed in un-shifted space.
var vertex = vertices + simplex.Count;
vertex->IndexA = indexSource;
vertex->SupportA = supportSource + lambda * sweepDirection;
vertex->IndexB = indexTarget;
vertex->SupportB = supportTarget;
vertex->W = vertex->SupportB - vertex->SupportA;
vertex->A = 1.0f;
simplex.Count += 1;
switch (simplex.Count)
{
case 1:
break;
case 2:
simplex.Solve2();
break;
case 3:
simplex.Solve3();
break;
default:
SafetyChecks.ThrowInvalidOperationException("Simplex has invalid count.");
return(default);
}
// If we have 3 points, then the origin is in the corresponding triangle.
if (simplex.Count == 3)
{
// Overlap.
return(false);
}
// Get search direction.
v = simplex.GetClosestPoint();
}
// Ensure we don't process an empty simplex.
if (simplex.Count == 0)
{
return(false);
}
// Prepare result.
var pointSource = float2.zero;
var pointTarget = float2.zero;
simplex.GetWitnessPoints(ref pointSource, ref pointTarget);
normal = math.normalizesafe(-v);
hit = new ColliderCastHit
{
Position = pointTarget + (normal * radiusTarget),
SurfaceNormal = normal,
Fraction = lambda
};
return(true);
}
/// <summary>
/// 立体线，可用于画空中走廊
/// </summary>
/// <param name="positions">空中走廊所有顶点</param>
public static Mesh CreateLineMesh_Old(Vector3[] vertexs, float width, float height, int colorInt = ColorInt32.white)
{
Vector3[] positions = PhysicsMath.GetAirCorridorSpace(vertexs.ToList(), width, height); // 获取点集
List <Vector3> vertices = new List <Vector3>();
List <int> trangles = new List <int>();
int count = positions.Length - 4;
// 左侧面
vertices.Add(positions[0]);
vertices.Add(positions[1]);
vertices.Add(positions[2]);
vertices.Add(positions[3]);
trangles.Add(3);
trangles.Add(1);
trangles.Add(0);
trangles.Add(3);
trangles.Add(2);
trangles.Add(1);
// 走廊框体
for (int i = 0; i < count; i++)
{
if (i % 4 == 3)
{
vertices.Add(positions[i]);
vertices.Add(positions[i - 3]);
vertices.Add(positions[i + 1]);
vertices.Add(positions[i + 4]);
}
else
{
vertices.Add(positions[i]);
vertices.Add(positions[i + 1]);
vertices.Add(positions[i + 5]);
vertices.Add(positions[i + 4]);
}
trangles.Add((i + 1) * 4);
trangles.Add((i + 1) * 4 + 2);
trangles.Add((i + 1) * 4 + 3);
trangles.Add((i + 1) * 4);
trangles.Add((i + 1) * 4 + 1);
trangles.Add((i + 1) * 4 + 2);
}
// 右侧面
vertices.Add(positions[count]);
vertices.Add(positions[count + 1]);
vertices.Add(positions[count + 2]);
vertices.Add(positions[count + 3]);
trangles.Add(vertices.Count - 4);
trangles.Add(vertices.Count - 2);
trangles.Add(vertices.Count - 1);
trangles.Add(vertices.Count - 4);
trangles.Add(vertices.Count - 3);
trangles.Add(vertices.Count - 2);
Color[] colors = new Color[vertices.Count];
Color color = colorInt.Color();
for (int i = 0; i < colors.Length; ++i)
{
colors[i] = color;
}
Mesh mesh = new Mesh
{
name = "Line",
vertices = vertices.ToArray(),
triangles = trangles.ToArray(),
colors = colors,
};
mesh.RecalculateBounds(); // 重置范围
mesh.RecalculateNormals(); // 重置法线
mesh.RecalculateTangents(); // 重置切线
return(mesh);
}
/// <summary>
/// 凹/凸多边形空域 每个点高度不一样时 可以用来画扇形区域
/// </summary>
/// <param name="positions"></param>
public static Mesh CreatePolygon(Vector3[] positions, int colorInt = ColorInt32.white)
{
List <Vector3> verticesDown = new List <Vector3>();
List <Vector3> verticesUp = new List <Vector3>();
List <Vector3> vertices = new List <Vector3>();
List <int> triangles = new List <int>();
//上下面坐标赋值 数组转List
for (int i = 0; i < positions.Length / 2; i++)
{
verticesDown.Add(positions[i]);
}
for (int i = positions.Length / 2; i < positions.Length; i++)
{
verticesUp.Add(positions[i]);
}
//计算一个平面的点数量
int count = verticesDown.Count;
//将上下平面点合并
for (int i = 0; i < verticesDown.Count; i++)
{
vertices.Add(verticesDown[i]);
}
for (int i = 0; i < verticesUp.Count; i++)
{
vertices.Add(verticesUp[i]);
}
//获取底面和顶面的三角形排序
List <int> trianglesDown = PhysicsMath.DrawPolygon(verticesDown, false);
List <int> trianglesUp = PhysicsMath.DrawPolygon(verticesUp, true);
for (int i = 0; i < trianglesDown.Count; i++)
{
trianglesUp[i] += count;
}
//合并底面顶面三角形排序
for (int i = 0; i < trianglesDown.Count; i++)
{
triangles.Add(trianglesDown[i]);
}
for (int i = 0; i < trianglesUp.Count; i++)
{
triangles.Add(trianglesUp[i]);
}
//侧面三角形排序
for (int i = 0; i < count - 1; i++)
{
// 加上侧面的点集
vertices.Add(vertices[i]);
vertices.Add(vertices[i + 1]);
vertices.Add(vertices[i + count + 1]);
vertices.Add(vertices[i + count]);
// 侧面三角形排序
triangles.Add(2 * count + 1 + i * 4);
triangles.Add(2 * count + 0 + i * 4);
triangles.Add(2 * count + 3 + i * 4);
triangles.Add(2 * count + 1 + i * 4);
triangles.Add(2 * count + 3 + i * 4);
triangles.Add(2 * count + 2 + i * 4);
}
// 加上最后一个侧面的点集
vertices.Add(vertices[count - 1]);
vertices.Add(vertices[0]);
vertices.Add(vertices[count]);
vertices.Add(vertices[2 * count - 1]);
// 加上最后一个侧面的三角形排序
triangles.Add(vertices.Count - 3);
triangles.Add(vertices.Count - 4);
triangles.Add(vertices.Count - 1);
triangles.Add(vertices.Count - 3);
triangles.Add(vertices.Count - 1);
triangles.Add(vertices.Count - 2);
Color[] colors = new Color[vertices.Count];
Color color = colorInt.Color();
for (int i = 0; i < colors.Length; ++i)
{
colors[i] = color;
}
Mesh mesh = new Mesh
{
name = "Polygon",
vertices = vertices.ToArray(),
triangles = triangles.ToArray(),
colors = colors,
};
mesh.RecalculateBounds(); // 重置范围
mesh.RecalculateNormals(); // 重置法线
mesh.RecalculateTangents(); // 重置切线
return(mesh);
}
/// <summary>
/// 立体线，可用于画空中走廊
/// </summary>
/// <param name="_bottomList">下底面排序</param>
/// <param name="_width">宽度</param>
/// <param name="_height">高度</param>
/// <returns></returns>
public static Mesh CreateLineMesh(List <Vector3> list, float _width, float _height, int colorInt = ColorInt32.white)
{
Vector3[] bottomPoints = PhysicsMath.GetAirSpaceBottomPoints(list, _width, _height);
Vector3[] vertices = PhysicsMath.GetAirBottomSpaceWithSector(bottomPoints.ToList(), _width);
// 计算Mesh
int _squareCount = list.Count - 1;
var _bottomList = vertices.ToList();
List <Vector3> outList = new List <Vector3>(); //输出点集合
List <Vector3> topList = new List <Vector3>(); //顶面点集合
List <Vector3> allSquareList = new List <Vector3>(); // 所有矩形点集
List <Vector3> allArcList = new List <Vector3>(); // 所有弧形点集
List <int> triangles = new List <int>(); // 存储三角形排序集合
foreach (var item in _bottomList)
{
topList.Add(item + Vector3.up * _height);// 添加顶面点集
}
#region 矩形所有
//合并矩形上下底面点集
for (int i = 0; i < _squareCount * 4; i += 2)
{
allSquareList.Add(_bottomList[i]);
allSquareList.Add(_bottomList[i + 1]);
allSquareList.Add(topList[i + 1]);
allSquareList.Add(topList[i]);
}
int bottomCount = _bottomList.Count;
//画最左侧面
outList.Add(allSquareList[0]);
outList.Add(allSquareList[1]);
outList.Add(allSquareList[2]);
outList.Add(allSquareList[3]);
triangles.Add(3);
triangles.Add(0);
triangles.Add(1);
triangles.Add(3);
triangles.Add(1);
triangles.Add(2);
//获得矩形区域点集合 4是为了去除左侧四个点
for (int i = 0; i < _squareCount; i++)
{
for (int j = 0; j < 4; j++)
{
//取余对内层循环的最后一次做处理 （i * 8）是为了去除前面i个矩形的点
if (j % 4 == 3)
{
outList.Add(allSquareList[i * 8 + j]);
outList.Add(allSquareList[i * 8 + (j - 3)]);
outList.Add(allSquareList[i * 8 + (j + 1)]);
outList.Add(allSquareList[i * 8 + (j + 4)]);
}
else
{
//以下四个点是组成了矩形的一个面
outList.Add(allSquareList[i * 8 + j]);
outList.Add(allSquareList[i * 8 + j + 1]);
outList.Add(allSquareList[i * 8 + j + 5]);
outList.Add(allSquareList[i * 8 + j + 4]);
}
// 第一个4是为了去除左侧面的四个点，16是为了去除一个矩形四个面的16个点，第二个4是为了去除内层循环j个面的点
triangles.Add(4 + i * 16 + j * 4);
triangles.Add(4 + i * 16 + j * 4 + 2);
triangles.Add(4 + i * 16 + j * 4 + 1);
triangles.Add(4 + i * 16 + j * 4);
triangles.Add(4 + i * 16 + j * 4 + 3);
triangles.Add(4 + i * 16 + j * 4 + 2);
}
}
//画最右侧面
outList.Add(allSquareList[allSquareList.Count - 4]);
outList.Add(allSquareList[allSquareList.Count - 3]);
outList.Add(allSquareList[allSquareList.Count - 2]);
outList.Add(allSquareList[allSquareList.Count - 1]);
triangles.Add(outList.Count - 1);
triangles.Add(outList.Count - 3);
triangles.Add(outList.Count - 4);
triangles.Add(outList.Count - 1);
triangles.Add(outList.Count - 2);
triangles.Add(outList.Count - 3);
#endregion
#region 弧形所有
int squarePointCount = outList.Count; // 记录用于画矩形的点的数量
int squareBottomCount = _squareCount * 4; // 记录底面矩形点的数量
// 添加弧形底面点
for (int i = squareBottomCount; i < _bottomList.Count; i++)
{
outList.Add(_bottomList[i]);
}
// 添加弧形顶面点
for (int i = squareBottomCount; i < _bottomList.Count; i++)
{
outList.Add(_bottomList[i] + Vector3.up * _height);
}
// 弧形顶面和底面三角形排序
for (int i = 0; i < _squareCount - 1; i++)
{
for (int j = 1; j < 11; j++)
{
triangles.Add(squarePointCount + i * 12);
triangles.Add(squarePointCount + i * 12 + j + 1);
triangles.Add(squarePointCount + i * 12 + j);
}
}
for (int i = _squareCount - 1; i < (_squareCount - 1) * 2; i++)
{
for (int j = 1; j < 11; j++)
{
triangles.Add(squarePointCount + i * 12);
triangles.Add(squarePointCount + i * 12 + j);
triangles.Add(squarePointCount + i * 12 + j + 1);
}
}
int prePointCount = outList.Count; // 记录当前输出集合的点的数量
// 添加弧形侧面点集
for (int i = squareBottomCount; i < _bottomList.Count; i++)
{
outList.Add(_bottomList[i]);
outList.Add(_bottomList[i] + Vector3.up * _height);
}
// 弧形侧面三角形排序
for (int i = 0; i < _squareCount - 1; i++)
{
//j从2开始去除两个弧心点,i*24是为了去除每次内层循环后加入的22个点
for (int j = 2; j < 22; j += 2)
{
triangles.Add(prePointCount + i * 24 + j);
triangles.Add(prePointCount + i * 24 + j + 3);
triangles.Add(prePointCount + i * 24 + j + 1);
triangles.Add(prePointCount + i * 24 + j);
triangles.Add(prePointCount + i * 24 + j + 2);
triangles.Add(prePointCount + i * 24 + j + 3);
}
}
#endregion
Color[] colors = new Color[outList.Count];
Color color = colorInt.Color();
for (int i = 0; i < colors.Length; ++i)
{
colors[i] = color;
}
Mesh mesh = new Mesh
{
name = "LineMesh",
vertices = outList.ToArray(),
triangles = triangles.ToArray(),
colors = colors,
};
mesh.RecalculateBounds(); // 重置范围
mesh.RecalculateNormals(); // 重置法线
mesh.RecalculateTangents(); // 重置切线
return(mesh);
}
public override void OnUpdate()
{
MouseLeft();
// 路面创建测试
if (Input.GetKeyDown(KeyCode.K))
{
List <Vector3> points_out = new List <Vector3>();
List <Vector3> points_in = new List <Vector3>();
Vector3 dirr;
dirr = PhysicsMath.GetHorizontalDir(positions[1] - positions[0]);
points_in.Add(positions[0] + dirr * 4);
points_out.Add(positions[0] - dirr * 4);
for (int i = 1; i < positions.Count - 1; i++)
{
dirr = PhysicsMath.GetHorizontalDir(positions[i + 1] - positions[i - 1]);
points_in.Add(positions[i] + dirr * 4);
points_out.Add(positions[i] - dirr * 4);
}
dirr = PhysicsMath.GetHorizontalDir(positions[positions.Count - 1] - positions[positions.Count - 2]);
points_in.Add(positions[positions.Count - 1] + dirr * 4);
points_out.Add(positions[positions.Count - 1] - dirr * 4);
for (int i = 0; i < positions.Count; i++)
{
outCurve.AddNode(points_out[i], c);
inCurve.AddNode(points_in[i], c);
centerCurve.AddNode(positions[i], c);
}
outCurve.AddCatmull_RomControl();
inCurve.AddCatmull_RomControl();
centerCurve.AddCatmull_RomControl();
for (int i = 0; i < outCurve.segmentList.Count; i++)
{
float add = 1f / 20;
for (float j = 0; j < 1; j += add)
{
Vector3 point = centerCurve.segmentList[i].GetPoint(j);
path.Add(point);
objs.Add(Utility.CreatPrimitiveType(PrimitiveType.Sphere, Color.red, point, 1));
//point = outCurve.segmentList[i].GetPoint(j);
//path.Add(point);
//objs.Add(Utility.CreatPrimitiveType(PrimitiveType.Sphere, point, 1, Color.red));
//point = inCurve.segmentList[i].GetPoint(j);
//path.Add(point);
//objs.Add(Utility.CreatPrimitiveType(PrimitiveType.Sphere, point, 1, Color.red));
}
}
CreateRoads(Terrain.activeTerrain, meshFilter, path, 6);
}
if (Input.GetKeyDown(KeyCode.C))
{
meshFilter.mesh.Clear();
objs.ForEach((a) => { Object.Destroy(a); });
objs.Clear();
outCurve = new SplineCurve();
inCurve = new SplineCurve();
centerCurve = new SplineCurve();
positions.Clear();
path.Clear();
}
if (Input.GetKeyDown(KeyCode.J))
{
hit = Utility.SendRay(LayerMask.GetMask("Terrain"));
}
// 刷新地图
if (Input.GetKeyDown(KeyCode.L))
{
//TerrainUtility.Refresh();
}
}
/// <summary>
/// 凹多边形空域 每个点高度不一样时 可以用来画扇形区域
/// </summary>
/// <param name="positions"></param>
/// <param name="meshFilter"></param>
/// <param name="lineRenderers"></param>
public static void DrawPolygon(Vector3[] positions, MeshFilter meshFilter, LineRenderer[] lineRenderers, Color BoradColor)
{
List <Vector3> verticesDown = new List <Vector3>();
List <Vector3> verticesUp = new List <Vector3>();
List <Vector3> vertices = new List <Vector3>();
List <int> triangles = new List <int>();
//上下面坐标赋值 数组转List
for (int i = 0; i < positions.Length / 2; i++)
{
verticesDown.Add(positions[i]);
}
for (int i = positions.Length / 2; i < positions.Length; i++)
{
verticesUp.Add(positions[i]);
}
//计算一个平面的点数量
int count = verticesDown.Count;
//将上下平面点合并
for (int i = 0; i < verticesDown.Count; i++)
{
vertices.Add(verticesDown[i]);
}
for (int i = 0; i < verticesUp.Count; i++)
{
vertices.Add(verticesUp[i]);
}
//获取底面和顶面的三角形排序
List <int> trianglesDown = PhysicsMath.DrawPolygon(verticesDown, false);
List <int> trianglesUp = PhysicsMath.DrawPolygon(verticesUp, true);
for (int i = 0; i < trianglesDown.Count; i++)
{
trianglesUp[i] += count;
}
//合并底面顶面三角形排序
for (int i = 0; i < trianglesDown.Count; i++)
{
triangles.Add(trianglesDown[i]);
}
for (int i = 0; i < trianglesUp.Count; i++)
{
triangles.Add(trianglesUp[i]);
}
//侧面三角形排序
for (int i = 0; i < count - 1; i++)
{
// 加上侧面的点集
vertices.Add(vertices[i]);
vertices.Add(vertices[i + 1]);
vertices.Add(vertices[i + count + 1]);
vertices.Add(vertices[i + count]);
// 侧面三角形排序
triangles.Add(2 * count + 1 + i * 4);
triangles.Add(2 * count + 0 + i * 4);
triangles.Add(2 * count + 3 + i * 4);
triangles.Add(2 * count + 1 + i * 4);
triangles.Add(2 * count + 3 + i * 4);
triangles.Add(2 * count + 2 + i * 4);
}
// 加上最后一个侧面的点集
vertices.Add(vertices[count - 1]);
vertices.Add(vertices[0]);
vertices.Add(vertices[count]);
vertices.Add(vertices[2 * count - 1]);
// 加上最后一个侧面的三角形排序
triangles.Add(vertices.Count - 3);
triangles.Add(vertices.Count - 4);
triangles.Add(vertices.Count - 1);
triangles.Add(vertices.Count - 3);
triangles.Add(vertices.Count - 1);
triangles.Add(vertices.Count - 2);
meshFilter.mesh.vertices = vertices.ToArray();
meshFilter.mesh.triangles = triangles.ToArray();
meshFilter.mesh.RecalculateBounds(); // 重置范围
meshFilter.mesh.RecalculateNormals(); // 重置法线
meshFilter.mesh.RecalculateTangents(); // 重置切线
//设置LineRenderer属性
foreach (var item in lineRenderers)
{
item.startWidth = 5;
item.endWidth = 5;
item.positionCount = 2;
item.startColor = BoradColor;
item.endColor = BoradColor;
}
lineRenderers[0].positionCount = positions.Length + 1;
//画两个弧面线及和圆心点的连接线
for (int i = 0; i < positions.Length; i++)
{
lineRenderers[0].SetPosition(i, positions[i]);
}
lineRenderers[0].SetPosition(positions.Length, positions[0]);
lineRenderers[1].SetPosition(0, positions[1]);
lineRenderers[1].SetPosition(1, positions[positions.Length / 2 + 1]);
lineRenderers[2].SetPosition(0, positions[positions.Length / 2 - 1]);
lineRenderers[2].SetPosition(1, positions[positions.Length - 1]);
}
private void CreatSector_2()
{
Vector3[] points = PhysicsMath.GetSectorPoints_2(positions[0], new Vector3(positions[1].x, positions[0].y, positions[1].z), alpha, theta);
MeshManager.Instance.CreateSector(positions[0], positions[1], alpha, theta, sectorColor);
}
/// <summary>
/// 凹多边形空域 每个点高度不一样时 可以用来画扇形区域
/// </summary>
/// <param name="positions"></param>
/// <param name="meshFilter"></param>
/// <param name="lineRenderers"></param>
public static void DrawPolygon(Vector3Extend[] positions, MeshFilter meshFilter)
{
List <Vector3> verticesDown = new List <Vector3>();
List <Vector3> verticesUp = new List <Vector3>();
List <Vector3> vertices = new List <Vector3>();
List <int> triangles = new List <int>();
//上下面坐标赋值 数组转List
for (int i = 0; i < positions.Length; i++)
{
verticesDown.Add(positions[i].position);
}
for (int i = 0; i < positions.Length; i++)
{
verticesUp.Add(positions[i].position + new Vector3(0, positions[i].height, 0));
}
//计算一个平面的点数量
int count = verticesDown.Count;
//将上下平面点合并
for (int i = 0; i < verticesDown.Count; i++)
{
vertices.Add(verticesDown[i]);
}
for (int i = 0; i < verticesUp.Count; i++)
{
vertices.Add(verticesUp[i]);
}
//获取底面和顶面的三角形排序
List <int> trianglesDown = PhysicsMath.DrawPolygon(verticesDown, false);
List <int> trianglesUp = PhysicsMath.DrawPolygon(verticesUp, true);
for (int i = 0; i < trianglesDown.Count; i++)
{
trianglesUp[i] += count;
}
//合并底面顶面三角形排序
for (int i = 0; i < trianglesDown.Count; i++)
{
triangles.Add(trianglesDown[i]);
}
for (int i = 0; i < trianglesUp.Count; i++)
{
triangles.Add(trianglesUp[i]);
}
//侧面三角形排序
for (int i = 0; i < count - 1; i++)
{
// 加上侧面的点集
vertices.Add(vertices[i]);
vertices.Add(vertices[i + 1]);
vertices.Add(vertices[i + count + 1]);
vertices.Add(vertices[i + count]);
// 侧面三角形排序
triangles.Add(2 * count + 1 + i * 4);
triangles.Add(2 * count + 0 + i * 4);
triangles.Add(2 * count + 3 + i * 4);
triangles.Add(2 * count + 1 + i * 4);
triangles.Add(2 * count + 3 + i * 4);
triangles.Add(2 * count + 2 + i * 4);
}
// 加上最后一个侧面的点集
vertices.Add(vertices[count - 1]);
vertices.Add(vertices[0]);
vertices.Add(vertices[count]);
vertices.Add(vertices[2 * count - 1]);
// 加上最后一个侧面的三角形排序
triangles.Add(vertices.Count - 3);
triangles.Add(vertices.Count - 4);
triangles.Add(vertices.Count - 1);
triangles.Add(vertices.Count - 3);
triangles.Add(vertices.Count - 1);
triangles.Add(vertices.Count - 2);
meshFilter.mesh.vertices = vertices.ToArray();
meshFilter.mesh.triangles = triangles.ToArray();
meshFilter.mesh.RecalculateBounds(); // 重置范围
meshFilter.mesh.RecalculateNormals(); // 重置法线
meshFilter.mesh.RecalculateTangents(); // 重置切线
}
/// <summary>
/// 获取凹多边形平面排序
/// </summary>
/// <param name="points"> 关键点集合 </param>
/// <returns></returns>
public static List <int> GetPolygonSort(List <Vector3> points, bool isUp)
{
List <int> indexs = new List <int>();
for (int i = 0; i < points.Count; i++)
{
indexs.Add(i);
}
List <int> triangles = new List <int>();
//创建一个除去自身前一点的 多边形，判断前一点是否为内点（凹点）
int index = points.Count - 1;
int next;
int prev;
int maxCount = indexs.Count + 1;
int count = 0;
// 切分到无法切割三角形为止
while (indexs.Count > 2)
{
if (maxCount > indexs.Count) // 正确
{
maxCount = indexs.Count;
count = 0;
}
else
{
if (count > maxCount)
{
throw new System.Exception("当前有" + (count - 1).ToString() + "个数据死在循环中");
}
count++;
}
// 判断要判断是否切割的三角形的三个点是否在同一位置
next = (index == indexs.Count - 1) ? 0 : index + 1;
prev = (index == 0) ? indexs.Count - 1 : index - 1;
if (points[index] == points[prev] && points[index] == points[next])
{
throw new System.Exception("[DrawPolygon data error]三个点的个位置两两相等");
}
List <Vector3> polygon = new List <Vector3>(points.ToArray());
polygon.RemoveAt(index);
//是否是凹点
if (!PhysicsMath.IsPointInsidePolygon(points[index], polygon))
{
// 是否是可划分顶点:新的多边形没有顶点在被分割的三角形内
if (PhysicsMath.IsFragementIndex(points, index))
{
//可划分，剖分三角形
next = (index == indexs.Count - 1) ? 0 : index + 1;
prev = (index == 0) ? indexs.Count - 1 : index - 1;
if (isUp)
{
triangles.Add(indexs[next]);
triangles.Add(indexs[prev]);
triangles.Add(indexs[index]);
}
else
{
triangles.Add(indexs[index]);
triangles.Add(indexs[prev]);
triangles.Add(indexs[next]);
}
indexs.RemoveAt(index);
points.RemoveAt(index);
index = (index + indexs.Count - 1) % indexs.Count; // 防止出现index超出值域,类似于i--
continue;
}
}
index = (index + 1) % indexs.Count;
}
return(triangles);
}
