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Aspose.3D for .NET 22.5发行说明

改进和变更

钥匙摘要类别
THREEDNET-1149网格三角剖分不支持映射模式多边形/多边形顶点的VertexElementUserData新功能
THREEDNET-1148在TriMesh中添加对VertexElementUserData的支持新功能
THREEDNET-1138允许将VertexElementUserData导出到glTF新功能
THREEDNET-1119支持GLTF自定义顶点属性新功能

API更改

在类Aspose.ThreeD.Entities.VertexElementUserData中更新属性类型从Dictionary<String, Object>到object:

        /// <summary>
        /// The user data attached in this element
        /// </summary>
        public object Data { get; set; }

如果旧代码在VertexElementUserData中附加了多个数据，现在应该使用多个VertexElementUserData。

通过此API更改，我们可以支持将VertexElementUserData转换为TriMesh甚至导出为glTF:

示例代码:

//Manually define a cube
Vector4[]controlPoints = new Vector4[]{
        new Vector4( -5.0, 0.0, 5.0, 1.0),
        new Vector4( 5.0, 0.0, 5.0, 1.0),
        new Vector4( 5.0, 10.0, 5.0, 1.0),
        new Vector4( -5.0, 10.0, 5.0, 1.0),
        new Vector4( -5.0, 0.0, -5.0, 1.0),
        new Vector4( 5.0, 0.0, -5.0, 1.0),
        new Vector4( 5.0, 10.0, -5.0, 1.0),
        new Vector4( -5.0, 10.0, -5.0, 1.0)
};
// Initialize mesh object
Mesh mesh = new Mesh();
// Add control points to the mesh
mesh.ControlPoints.AddRange(controlPoints);
// Create polygons to mesh
// Front face (Z+)
mesh.CreatePolygon(new int[]{ 0, 1, 2, 3 });
// Right side (X+)
mesh.CreatePolygon(new int[]{ 1, 5, 6, 2 });
// Back face (Z-)
mesh.CreatePolygon(new int[]{ 5, 4, 7, 6 });
// Left side (X-)
mesh.CreatePolygon(new int[]{ 4, 0, 3, 7 });
// Bottom face (Y-)
mesh.CreatePolygon(new int[]{ 0, 4, 5, 1 });
// Top face (Y+)
mesh.CreatePolygon(new int[]{ 3, 2, 6, 7 });

//create a user data to store face id for each face, this is done by specifying MappingMode to Polygon
var userData = (VertexElementUserData)mesh.CreateElement(VertexElementType.UserData, MappingMode.Polygon, ReferenceMode.Direct); ;
//The name of the UserData will be used as the field's name
userData.Name = "__FACE_ID";
userData.Data = new double[]{
        0,1,2,3,4,5
};
var triMesh = TriMesh.FromMesh(mesh);
Console.WriteLine("TriMesh:");
foreach(var vtx in triMesh)
{
        Console.WriteLine(vtx);
}

输出为:

TriMesh:
Position = (-5,0,5), __FACE_ID = 0
Position = (5,0,5), __FACE_ID = 0
Position = (5,10,5), __FACE_ID = 0
Position = (5,10,5), __FACE_ID = 0
Position = (-5,10,5), __FACE_ID = 0
Position = (5,0,5), __FACE_ID = 1
Position = (5,0,-5), __FACE_ID = 1
Position = (5,10,-5), __FACE_ID = 1
Position = (5,10,-5), __FACE_ID = 1
Position = (5,10,5), __FACE_ID = 1
Position = (5,0,-5), __FACE_ID = 2
Position = (-5,0,-5), __FACE_ID = 2
Position = (-5,10,-5), __FACE_ID = 2
Position = (-5,10,-5), __FACE_ID = 2
Position = (5,10,-5), __FACE_ID = 2
Position = (-5,0,-5), __FACE_ID = 3
Position = (-5,0,5), __FACE_ID = 3
Position = (-5,10,5), __FACE_ID = 3
Position = (-5,10,5), __FACE_ID = 3
Position = (-5,10,-5), __FACE_ID = 3
Position = (-5,0,5), __FACE_ID = 4
Position = (-5,0,-5), __FACE_ID = 4
Position = (5,0,-5), __FACE_ID = 4
Position = (5,0,-5), __FACE_ID = 4
Position = (5,0,5), __FACE_ID = 4
Position = (-5,10,5), __FACE_ID = 5
Position = (5,10,5), __FACE_ID = 5
Position = (5,10,-5), __FACE_ID = 5
Position = (5,10,-5), __FACE_ID = 5
Position = (-5,10,-5), __FACE_ID = 5

 
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