public Triangle(IVector3 v0, IVector3 v1, IVector3 v2, IVector3 norm, UInt32 index)
{
vert = new Vector3[3];
vert[0] = v0;
vert[1] = v1;
vert[2] = v2;
normal = norm;
normal.Normalize();
this.index = index;
getBoundingBox();
GetSideVectors();
}
public Triangle(IVector3 v0, IVector3 v1, IVector3 v2, UInt32 index)
{
IVector3[] vert = new Vector3[3];
vert[0] = v0;
vert[1] = v1;
vert[2] = v2;
this.index = index;
getBoundingBox();
GetSideVectors();
normal = v01.Cross(v12);
normal.Normalize();
}
/// <summary>
/// 参数化建模
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnDriveModel_Click(object sender, System.EventArgs e)
{
try
{
if (polyline != null)
{
center = polyline.Envelope.Center;
IModelPoint mp = new GeometryFactory().CreateGeometry(gviGeometryType.gviGeometryModelPoint, gviVertexAttribute.gviVertexAttributeZ) as IModelPoint;
mp.SpatialCRS = datasetCRS;
mp.Position = center;
IModel model = new ResourceFactory().CreateModel();
IDrawGroup group = new DrawGroup();
IDrawPrimitive primitive = new DrawPrimitive();
IDrawMaterial material = new DrawMaterial();
material.TextureName = (strMediaPath + @"\shp\road\textrure.jpg");
material.CullMode = gviCullFaceMode.gviCullNone;
material.WrapModeS = gviTextureWrapMode.gviTextureWrapRepeat;
material.WrapModeT = gviTextureWrapMode.gviTextureWrapRepeat;
IFloatArray va = new FloatArray();
IFloatArray ta = new FloatArray();
// 逐点外扩
for (int i = 0; i < polyline.PointCount; i++)
{
#region 单独处理最后一个点
if (i == polyline.PointCount - 1)
{
curPoint = polyline.GetPoint(i);
vecCurPos = curPoint.Position;
// 最后一个点重用最后的方向向量
vecTarget = vecDirect.CrossProduct(vecZ);
vecTarget.Normalize();
vecTarget.MultiplyByScalar(width / 2);
vecP = vecCurPos.Add(vecTarget);
vecTarget.MultiplyByScalar(-1);
vecQ = vecCurPos.Add(vecTarget);
// 设置外扩点
P = curPoint.Clone() as IPoint;
P.Position = vecP;
Q = curPoint.Clone() as IPoint;
Q.Position = vecQ;
// 把点坐标加进顶点数组
va.Append((float)(vecP.X - center.X));
va.Append((float)(vecP.Y - center.Y));
va.Append((float)(vecP.Z - center.Z));
va.Append((float)(vecQ.X - center.X));
va.Append((float)(vecQ.Y - center.Y));
va.Append((float)(vecQ.Z - center.Z));
// 加纹理坐标
ta.Append(0); //P点纹理
if (i == 0)
{
lastV = 0.0;
}
else
{
lastV = lastV + length / 10; //v方向上每隔10米重复一次
}
ta.Append((float)lastV);
ta.Append(1); //Q点纹理
ta.Append((float)lastV);
{
ISimplePointSymbol ps = new SimplePointSymbol();
ps.FillColor = System.Drawing.Color.Yellow;
ps.Size = 5;
rPointToDelList.Add(this.axRenderControl1.ObjectManager.CreateRenderPoint(P, ps, rootId));
rPointToDelList.Add(this.axRenderControl1.ObjectManager.CreateRenderPoint(Q, ps, rootId));
}
break;
}
#endregion
// 当不是最后一个点时：
curPoint = polyline.GetPoint(i);
nextPoint = polyline.GetPoint(i + 1);
vecCurPos = curPoint.Position;
vecNextPos = nextPoint.Position;
// 运算
vecNextPos.MultiplyByScalar(-1);
vecDirect = vecCurPos.Add(vecNextPos); //方向向量
vecZ.Set(0, 0, 1);
vecTarget = vecDirect.CrossProduct(vecZ);
vecTarget.Normalize();
vecTarget.MultiplyByScalar(width / 2);
vecP = vecCurPos.Add(vecTarget);
vecTarget.MultiplyByScalar(-1);
vecQ = vecCurPos.Add(vecTarget);
// 设置外扩点
P = curPoint.Clone() as IPoint;
P.Position = vecP;
Q = curPoint.Clone() as IPoint;
Q.Position = vecQ;
// 把点坐标加进顶点数组
va.Append((float)(vecP.X - center.X));
va.Append((float)(vecP.Y - center.Y));
va.Append((float)(vecP.Z - center.Z));
va.Append((float)(vecQ.X - center.X));
va.Append((float)(vecQ.Y - center.Y));
va.Append((float)(vecQ.Z - center.Z));
// 加纹理坐标
ta.Append(0); //P点纹理
if (i == 0)
{
lastV = 0.0;
}
else
{
lastV = lastV + length / 5; //v方向上每隔10米重复一次
}
length = vecDirect.Length; //计算长度给奇数点用
ta.Append((float)lastV);
ta.Append(1); //Q点纹理
ta.Append((float)lastV);
{
ISimplePointSymbol ps = new SimplePointSymbol();
ps.FillColor = System.Drawing.Color.Yellow;
ps.Size = 5;
rPointToDelList.Add(this.axRenderControl1.ObjectManager.CreateRenderPoint(P, ps, rootId));
rPointToDelList.Add(this.axRenderControl1.ObjectManager.CreateRenderPoint(Q, ps, rootId));
}
}
// 计算索引坐标
IUInt16Array ia = new UInt16Array();
for (int i = 0; i < va.Length / 6 - 1; i++)
{
ia.Append((ushort)(2 * i));
ia.Append((ushort)(2 * i + 1));
ia.Append((ushort)(2 * i + 2));
ia.Append((ushort)(2 * i + 1));
ia.Append((ushort)(2 * i + 3));
ia.Append((ushort)(2 * i + 2));
}
primitive.VertexArray = va;
primitive.TexcoordArray = ta;
primitive.IndexArray = ia;
primitive.Material = material;
group.AddPrimitive(primitive);
model.AddGroup(group);
// 在内存中临时存储模型
string modelName = fid.ToString();
this.axRenderControl1.ObjectManager.AddModel(modelName, model);
mp.ModelName = modelName;
mp.ModelEnvelope = model.Envelope;
// 可视化临时模型
IRenderModelPoint rmp = this.axRenderControl1.ObjectManager.CreateRenderModelPoint(mp, null, rootId);
rmp.MaxVisibleDistance = 100000;
rmp.MouseSelectMask = gviViewportMask.gviViewNone;
rModelpointToDelList.Add(rmp);
}
}
catch (System.Exception ex)
{
if (ex.GetType().Name.Equals("UnauthorizedAccessException"))
{
MessageBox.Show("需要标准runtime授权");
}
else
{
MessageBox.Show(ex.Message);
}
}
}
/// <summary>
/// Normalize a vector
/// </summary>
/// <param name="v">Vector to be normalized</param>
/// <returns>Normalized result vector a/|a|</returns>
public static IVector3 Normalize(this IVector3 v)
{
return(v.Normalize(ref v));
}