public override void ModifyMesh(VertexHelper vh)
{
if (!IsActive())
{
return;
}
if (!softMaskRect.orientedRect2D.Overlaps(orientedRect2D))
{
vh.Clear();
return;
}
var vertices = new List <UIVertex>();
vh.GetUIVertexStream(vertices);
vh.Clear();
var indices = Enumerable.Range(0, vertices.Count).ToList();
for (int i = 0, iMax = vertices.Count; i < iMax; ++i)
{
vertices[i] = SetPosition(vertices[i], rectTransform.TransformPoint(vertices[i].position));
}
VertexUtility.Intersect(vertices, indices, softMaskRect.Vertices);
for (int i = 0, iMax = vertices.Count; i < iMax; ++i)
{
vertices[i] = SetPosition(vertices[i], rectTransform.InverseTransformPoint(vertices[i].position));
}
vh.AddUIVertexStream(vertices, indices);
}
public void T100_IntersectInSquare()
{
var triangle = new List <UIVertex>(3);
triangle.Add(CreateUIVertex(new Vector3(0.0f, 0.0f, 0.0f)));
triangle.Add(CreateUIVertex(new Vector3(4.0f, 0.0f, 0.0f)));
triangle.Add(CreateUIVertex(new Vector3(4.0f, 4.0f, 0.0f)));
triangle.Add(CreateUIVertex(new Vector3(0.0f, 4.0f, 0.0f)));
triangle = (new[] { 0, 1, 2, 2, 0, 3 }).Select(x => triangle[x]).ToList();
var mask = new List <UIVertex>(3);
mask.Add(CreateUIVertex(new Vector3(1.0f, 1.0f, 0.0f)));
mask.Add(CreateUIVertex(new Vector3(3.0f, 1.0f, 0.0f)));
mask.Add(CreateUIVertex(new Vector3(3.0f, 3.0f, 0.0f)));
mask.Add(CreateUIVertex(new Vector3(1.0f, 3.0f, 0.0f)));
mask = (new[] { 0, 1, 2, 2, 0, 3 }).Select(x => mask[x]).ToList();
VertexUtility.Intersect(triangle, mask);
Assert.AreEqual(6, triangle.Count);
Assert.AreEqual(4, triangle.Select(x => x.position).Distinct().Count());
var vertices = new List <Vector3>(3);
vertices.Add(new Vector3(1.0f, 1.0f, 0.0f));
vertices.Add(new Vector3(3.0f, 1.0f, 0.0f));
vertices.Add(new Vector3(3.0f, 3.0f, 0.0f));
vertices.Add(new Vector3(3.0f, 1.0f, 0.0f));
Assert.AreEqual(4, triangle.Select(x => x.position).Concat(vertices).Distinct().Count());
}
public void T000_IntersectInTriangle()
{
var triangle = new List <UIVertex>(3);
triangle.Add(CreateUIVertex(new Vector3(0.0f, 0.0f, 0.0f)));
triangle.Add(CreateUIVertex(new Vector3(4.0f, 0.0f, 0.0f)));
triangle.Add(CreateUIVertex(new Vector3(0.0f, 4.0f, 0.0f)));
var mask = new List <UIVertex>(3);
mask.Add(CreateUIVertex(new Vector3(1.0f, 1.0f, 0.0f)));
mask.Add(CreateUIVertex(new Vector3(3.0f, 1.0f, 0.0f)));
mask.Add(CreateUIVertex(new Vector3(1.0f, 3.0f, 0.0f)));
VertexUtility.Intersect(triangle, mask);
Assert.AreEqual(3, triangle.Count);
Assert.AreEqual(3, triangle.Select(x => x.position).Distinct().Count());
var vertices = new List <Vector3>(3);
vertices.Add(new Vector3(1.0f, 1.0f, 0.0f));
vertices.Add(new Vector3(3.0f, 1.0f, 0.0f));
vertices.Add(new Vector3(1.0f, 3.0f, 0.0f));
Assert.AreEqual(3, triangle.Select(x => x.position).Concat(vertices).Distinct().Count());
}
private void CharacterIntersect(List <UIVertex> vertices, List <int> indices, List <UIVertex> mask, System.Func <UIVertex, UIVertex, UIVertex> blend, Text text)
{
var originalVerticesCount = vertices.Count;
var originalIndicesCount = indices.Count;
var rectVertices = new List <UIVertex>(mask.Count * 2);
var rectIndices = new List <int>(mask.Count * 2);
var rectTransformRect = rectTransform.rect;
var srcIndex = 0;
var dstIndex = 0;
for (int i = 0, iMax = text.text.Length; i < iMax; ++i)
{
var ch = text.text[i];
CharacterInfo info;
if (!text.font.GetCharacterInfo(ch, out info))
{
info = text.font.characterInfo.Where(x => x.index == ch).FirstOrDefault();
}
var boundingBox = new Rect(0.0f
, (text.font.ascent - ((text.font.lineHeight - text.font.fontSize) * 0.5f)) * text.fontSize / (float)text.font.fontSize - text.fontSize
, text.fontSize
, text.fontSize
);
var charGlyph = new Rect(info.minX * text.fontSize / (float)info.size
, info.minY * text.fontSize / (float)info.size
, (info.maxX - info.minX) * text.fontSize / (float)info.size
, (info.maxY - info.minY) * text.fontSize / (float)info.size
);
var upperRightPosition = vertices[indices[srcIndex + 1]].position;
var lowerLeftPosition = vertices[indices[srcIndex + 4]].position;
var charDraw = new Rect(lowerLeftPosition.x
, lowerLeftPosition.y
, upperRightPosition.x - lowerLeftPosition.x
, upperRightPosition.y - lowerLeftPosition.y
);
var scale = new Vector2(rectTransformRect.size.x / boundingBox.size.x
, rectTransformRect.size.y / boundingBox.size.y
);
var srcStartIndex = indices[srcIndex];
for (var k = 0; k < 4; ++k)
{
var vertex = vertices[srcStartIndex + k];
var pos2d = Vector2.Scale((Vector2)vertex.position - charDraw.min + (charGlyph.min - boundingBox.min), scale) + rectTransformRect.min;
vertex.position = new Vector3(pos2d.x, pos2d.y, vertex.position.z);
rectVertices.Add(vertex);
}
for (var k = 0; k < 6; ++k)
{
rectIndices.Add(indices[srcIndex] - srcStartIndex);
++srcIndex;
}
VertexUtility.Intersect(rectVertices, rectIndices, mask, blend);
var scaleInverse = new Vector2(boundingBox.size.x / rectTransformRect.size.x
, boundingBox.size.y / rectTransformRect.size.y
);
vertices.AddRange(rectVertices.Select(x => {
var pos2d = Vector2.Scale((Vector2)x.position - rectTransformRect.min, scaleInverse) - (charGlyph.min - boundingBox.min) + charDraw.min;
x.position = new Vector3(pos2d.x, pos2d.y, x.position.z);
return(x);
}));
indices.AddRange(rectIndices.Select(x => x + dstIndex));
dstIndex += rectVertices.Count;
rectVertices.RemoveRange(0, rectVertices.Count);
rectIndices.RemoveRange(0, rectIndices.Count);
}
vertices.RemoveRange(0, originalVerticesCount);
indices.RemoveRange(0, originalIndicesCount);
}
private static void RectTransformIntersect(List <UIVertex> vertices, List <int> indices, List <UIVertex> mask, System.Func <UIVertex, UIVertex, UIVertex> blend)
{
VertexUtility.Intersect(vertices, indices, mask, blend);
}
