private static IEnumerable <UIVertex[]> CreateUiVertexsGroup(IList <Vector2> points, float width,
Color color, CapType cap, CornerType corner)
{
var vertex = new UIVertex {
color = color
};
var queVertexs = new List <UIVertex[]>();
for (var i = 0; i < points.Count - 1; i++)
{
var vertexs = new List <UIVertex>();
// Pointを定義
Vector2?point0;
var point1 = points[i + 0];
var point2 = points[i + 1];
Vector2?point3;
if (i - 1 < 0)
{
point0 = null;
}
else
{
point0 = points[i - 1];
}
if (i + 2 > points.Count - 1)
{
point3 = null;
}
else
{
point3 = points[i + 2];
}
var defaultNormal = (point1 - point2).normalized;
var defaultCalcNormal = new Vector2(-defaultNormal.y, defaultNormal.x);
{
var normal2 = CalcNormal(point1, point2, point3);
var normal1 = CalcNormal(point0, point1, point2);
var innerProduct1 = Vector2.Dot(defaultCalcNormal, normal1);
var innerProduct2 = Vector2.Dot(defaultCalcNormal, normal2);
var upPosition1 = defaultNormal - (normal1 + defaultCalcNormal).normalized;
var downPosition1 = defaultNormal + (normal1 + defaultCalcNormal).normalized;
var upPosition2 = defaultNormal - (normal2 + defaultCalcNormal).normalized;
var downPosition2 = defaultNormal + (normal2 + defaultCalcNormal).normalized;
var isUp1 = upPosition1.magnitude >= downPosition1.magnitude;
var isUp2 = upPosition2.magnitude >= downPosition2.magnitude;
var width1 = width / innerProduct1;
var width2 = width / innerProduct2;
if (!point0.HasValue)
{
AddCap(point1, point2, defaultNormal, defaultCalcNormal, width, false, cap, vertex,
queVertexs);
}
else
{
var upPosition = -defaultNormal - (normal1 + defaultCalcNormal).normalized;
var downPosition = -defaultNormal + (normal1 + defaultCalcNormal).normalized;
var clockwise = upPosition.magnitude >= downPosition.magnitude;
AddCorner(point1, point2, defaultNormal, defaultCalcNormal, normal1, width, false, clockwise, corner,
vertex,
queVertexs);
}
switch (corner)
{
case CornerType.Miter:
{
vertex.position = point1 - normal1 * width1;
vertex.uv0 = new Vector2(0, 0);
vertexs.Add(vertex);
vertex.position = point2 - normal2 * width2;
vertex.uv0 = new Vector2(1, 0);
vertexs.Add(vertex);
vertex.position = point2 + normal2 * width2;
vertex.uv0 = new Vector2(1, 1);
vertexs.Add(vertex);
vertex.position = point1 + normal1 * width1;
vertex.uv0 = new Vector2(0, 1);
vertexs.Add(vertex);
queVertexs.Add(vertexs.ToArray());
vertexs.Clear();
break;
}
case CornerType.Round:
case CornerType.Bevel:
{
vertex.position = isUp1 ? point1 - defaultCalcNormal * width : point1 - normal1 * width1;
vertex.uv0 = new Vector2(0, 0);
vertexs.Add(vertex);
vertex.position = isUp2 ? point2 - normal2 * width2 : point2 - defaultCalcNormal * width;
vertex.uv0 = new Vector2(1, 0);
vertexs.Add(vertex);
vertex.position = isUp2 ? point2 + defaultCalcNormal * width : point2 + normal2 * width2;
vertex.uv0 = new Vector2(1, 1);
vertexs.Add(vertex);
vertex.position = isUp1 ? point1 + normal1 * width1 : point1 + defaultCalcNormal * width;
vertex.uv0 = new Vector2(0, 1);
vertexs.Add(vertex);
queVertexs.Add(vertexs.ToArray());
vertexs.Clear();
break;
}
default:
throw new ArgumentOutOfRangeException(corner.GetType().Name, corner, null);
}
if (!point3.HasValue)
{
AddCap(point1, point2, defaultNormal, defaultCalcNormal, width, true, cap, vertex,
queVertexs);
}
else
{
var upPosition = -defaultNormal - (normal2 + defaultCalcNormal).normalized;
var downPosition = -defaultNormal + (normal2 + defaultCalcNormal).normalized;
var clockwise = upPosition.magnitude >= downPosition.magnitude;
AddCorner(point1, point2, defaultNormal, defaultCalcNormal, normal2, width, true, clockwise, corner,
vertex,
queVertexs);
}
}
}
return(queVertexs.ToArray());
}
/// <summary>
/// 角に追加する
/// </summary>
/// <param name="point1"></param>
/// <param name="point2"></param>
/// <param name="defaultNormal"></param>
/// <param name="defaultCalcNormal"></param>
/// <param name="normal"></param>
/// <param name="width"></param>
/// <param name="isEnd"></param>
/// <param name="corner"></param>
/// <param name="vertex"></param>
/// <param name="queVertexs"></param>
private static void AddCorner(Vector2 point1, Vector2 point2, Vector2 defaultNormal,
Vector2 defaultCalcNormal, Vector2 normal,
float width, bool isEnd, bool clockwise, CornerType corner, UIVertex vertex,
ICollection <UIVertex[]> queVertexs)
{
var vertexs = new List <UIVertex>();
if (isEnd)
{
switch (corner)
{
case CornerType.Miter:
break;
case CornerType.Round:
{
var upPosition = -defaultNormal - (normal + defaultCalcNormal).normalized;
var downPosition = -defaultNormal + (normal + defaultCalcNormal).normalized;
var innerProduct = Vector2.Dot(defaultCalcNormal, normal);
if (upPosition.magnitude >= downPosition.magnitude)
{
vertex.position = point2 + normal * width / innerProduct;
vertex.uv0 = new Vector2(0, 0);
vertexs.Add(vertex);
vertex.position = point2 - normal * width;
vertex.uv0 = new Vector2(1, 0);
vertexs.Add(vertex);
vertex.position = point2 - (normal + defaultCalcNormal).normalized * width;
vertex.uv0 = new Vector2(1, 1);
vertexs.Add(vertex);
vertex.position = point2 - defaultCalcNormal * width;
vertex.uv0 = new Vector2(0, 1);
vertexs.Add(vertex);
queVertexs.Add(vertexs.ToArray());
vertexs.Clear();
}
else
{
vertex.position = point2 - normal * width / innerProduct;
vertex.uv0 = new Vector2(0, 0);
vertexs.Add(vertex);
vertex.position = point2 + defaultCalcNormal * width;
vertex.uv0 = new Vector2(1, 0);
vertexs.Add(vertex);
vertex.position = point2 + (normal + defaultCalcNormal).normalized * width;
vertex.uv0 = new Vector2(1, 1);
vertexs.Add(vertex);
vertex.position = point2 + normal * width;
vertex.uv0 = new Vector2(0, 1);
vertexs.Add(vertex);
queVertexs.Add(vertexs.ToArray());
vertexs.Clear();
}
break;
}
case CornerType.Bevel:
{
var innerProduct = Vector2.Dot(defaultCalcNormal, normal);
var upPosition = -defaultNormal - (normal + defaultCalcNormal).normalized;
var downPosition = -defaultNormal + (normal + defaultCalcNormal).normalized;
if (upPosition.magnitude >= downPosition.magnitude)
{
vertex.position = point2 + normal * width / innerProduct;
vertex.uv0 = new Vector2(0, 0);
vertexs.Add(vertex);
vertex.position = point2 - normal * width * innerProduct;
vertex.uv0 = new Vector2(1, 0);
vertexs.Add(vertex);
vertex.position = point2 - defaultCalcNormal * width;
vertex.uv0 = new Vector2(1, 1);
vertexs.Add(vertex);
vertex.position = point2 + normal * width / innerProduct;
vertex.uv0 = new Vector2(0, 1);
vertexs.Add(vertex);
queVertexs.Add(vertexs.ToArray());
vertexs.Clear();
}
else
{
vertex.position = point2 - normal * width / innerProduct;;
vertex.uv0 = new Vector2(0, 0);
vertexs.Add(vertex);
vertex.position = point2 + defaultCalcNormal * width;
vertex.uv0 = new Vector2(1, 0);
vertexs.Add(vertex);
vertex.position = point2 + normal * width * innerProduct;
vertex.uv0 = new Vector2(1, 1);
vertexs.Add(vertex);
vertex.position = point2 - normal * width / innerProduct;;
vertex.uv0 = new Vector2(0, 1);
vertexs.Add(vertex);
queVertexs.Add(vertexs.ToArray());
vertexs.Clear();
}
break;
}
default:
throw new ArgumentOutOfRangeException(corner.GetType().Name, corner, null);
}
}
else
{
switch (corner)
{
case CornerType.Miter:
break;
case CornerType.Round:
{
var upPosition = defaultNormal - (normal + defaultCalcNormal).normalized;
var downPosition = defaultNormal + (normal + defaultCalcNormal).normalized;
var innerProduct = Vector2.Dot(defaultCalcNormal, normal);
if (upPosition.magnitude >= downPosition.magnitude)
{
vertex.position = point1 + normal * width / innerProduct;
vertex.uv0 = new Vector2(0, 0);
vertexs.Add(vertex);
vertex.position = point1 - defaultCalcNormal * width;
vertex.uv0 = new Vector2(1, 0);
vertexs.Add(vertex);
vertex.position = point1 - (normal + defaultCalcNormal).normalized * width;
vertex.uv0 = new Vector2(1, 1);
vertexs.Add(vertex);
vertex.position = point1 - normal * width;
vertex.uv0 = new Vector2(0, 1);
vertexs.Add(vertex);
queVertexs.Add(vertexs.ToArray());
vertexs.Clear();
}
else
{
vertex.position = point1 - normal * width / innerProduct;
vertex.uv0 = new Vector2(0, 0);
vertexs.Add(vertex);
vertex.position = point1 + normal * width;
vertex.uv0 = new Vector2(1, 0);
vertexs.Add(vertex);
vertex.position = point1 + (normal + defaultCalcNormal).normalized * width;
vertex.uv0 = new Vector2(1, 1);
vertexs.Add(vertex);
vertex.position = point1 + defaultCalcNormal * width;
vertex.uv0 = new Vector2(0, 1);
vertexs.Add(vertex);
queVertexs.Add(vertexs.ToArray());
vertexs.Clear();
}
break;
}
case CornerType.Bevel:
{
var innerProduct = Vector2.Dot(defaultCalcNormal, normal);
var upPosition = defaultNormal - (normal + defaultCalcNormal).normalized;
var downPosition = defaultNormal + (normal + defaultCalcNormal).normalized;
if (upPosition.magnitude >= downPosition.magnitude)
{
vertex.position = point1 + normal * width / innerProduct;;
vertex.uv0 = new Vector2(0, 0);
vertexs.Add(vertex);
vertex.position = point1 - defaultCalcNormal * width;
vertex.uv0 = new Vector2(1, 0);
vertexs.Add(vertex);
vertex.position = point1 - normal * width * innerProduct;
vertex.uv0 = new Vector2(1, 1);
vertexs.Add(vertex);
vertex.position = point1 + normal * width / innerProduct;;
vertex.uv0 = new Vector2(0, 1);
vertexs.Add(vertex);
queVertexs.Add(vertexs.ToArray());
vertexs.Clear();
}
else
{
vertex.position = point1 - normal * width / innerProduct;;
vertex.uv0 = new Vector2(0, 0);
vertexs.Add(vertex);
vertex.position = point1 + normal * width * innerProduct;
vertex.uv0 = new Vector2(1, 0);
vertexs.Add(vertex);
vertex.position = point1 + defaultCalcNormal * width;
vertex.uv0 = new Vector2(1, 1);
vertexs.Add(vertex);
vertex.position = point1 - normal * width / innerProduct;;
vertex.uv0 = new Vector2(0, 1);
vertexs.Add(vertex);
queVertexs.Add(vertexs.ToArray());
vertexs.Clear();
}
break;
}
default:
throw new ArgumentOutOfRangeException(corner.GetType().Name, corner, null);
}
}
}
