protected override void OnPopulateMesh(VertexHelper vh)
{
if (m_mesh == null)
{
base.OnPopulateMesh(vh);
return;
}
vh.Clear();
s_vertBuffer.Clear();
s_triBuffer.Clear();
s_colorBuffer.Clear();
s_uv0Buffer.Clear();
// Calc Bounds
mesh.GetVertices(s_vertBuffer);
mesh.GetTriangles(s_triBuffer, 0);
mesh.GetColors(s_colorBuffer);
mesh.GetUVs(0, s_uv0Buffer);
Bounds bounds = new Bounds(s_vertBuffer[0], Vector3.zero);
foreach (var vert in s_vertBuffer)
{
bounds.Encapsulate(vert);
}
Vector2 dims = rectTransform.rect.size;
// Add the same verts, but now normalized
int meshVertCount = s_vertBuffer.Count;
for (int vi = 0; vi < meshVertCount; vi++)
{
Vector3 meshVert = s_vertBuffer[vi];
UIVertex uiVert = new UIVertex();
bool hasColors = mesh.HasVertexAttribute(UnityEngine.Rendering.VertexAttribute.Color);
Color geoFactor = Color.white;
if (hasColors && vi < s_colorBuffer.Count)
{
geoFactor = s_colorBuffer[vi];
}
uiVert.color = this.color * geoFactor;
Vector2 normPoint = bounds.CalcNormalizedPoint(meshVert).XY();
normPoint = softSlice ? softSlicing.Remap(normPoint, dims) : normPoint;
normPoint -= 0.5f * Vector2.one;
Vector3 scaledPos = new Vector3(-normPoint.x * dims.x, normPoint.y * dims.y, 0f);
uiVert.position = scaledPos;
uiVert.uv0 = s_uv0Buffer[vi];
// if( mesh.uv2 != null && vi < mesh.uv2.Length){
// uiVert.uv1 = mesh.uv2[vi];
// }
// if( mesh.uv3 != null && vi < mesh.uv3.Length){
// uiVert.uv2 = mesh.uv3[vi];
// }
// if( mesh.uv4 != null && vi < mesh.uv4.Length){
// uiVert.uv3 = mesh.uv4[vi];
// }
vh.AddVert(uiVert);
}
// Same tri indices
int triCount = s_triBuffer.Count;
for (int ti = 0; ti < triCount; ti += 3)
{
vh.AddTriangle(s_triBuffer[ti + 0], s_triBuffer[ti + 1], s_triBuffer[ti + 2]);
}
}
