我想创建一个代表梁的 IFC 文件。我的输入是 2 个点和一个横截面定义。目的是查看光束的形状。有人可以指出我正确的方向。XBim 有什么东西可以做到这一点吗?
我试图通读从 Tekla 导出的只有一个梁的 IFC 文件。我试图通读 IFC 模式定义规范。(找到一个不是很成功)
没有写代码
我期待的是输入个人资料。(我不知道如何输入轮廓),输入起点和终点以创建代表梁的IFC文件。然后我应该能够在 IFC 查看器中打开文件并查看梁
谢谢你,我会试试这个。
XBim 将所有 IFC 实体提供为 C# 类(早期绑定)。
例如,您可以通过以下方式创建交叉配置文件:
public IfcProfileDef getBasicProfileDescirption() {
IfcPolyline polyline = new IfcPolyline(id++);
model_.insertEntity(polyline);
double Left = -OverallWidth_ / 2.0;
double Right = OverallWidth_ / 2.0;
double Top = OverallDepth_ / 2.0;
double Bottom = -OverallDepth_ / 2.0;
polyline.Points.add(createPoint(Left,Top) ); // coordinate (A)
polyline.Points.add(createPoint(Right,Top) ); // coordinate (B)
polyline.Points.add(createPoint(Right,Top-FlangeThickness_)); // coordinate (C)
polyline.Points.add(createPoint(WebThickness_*0.5,Top-FlangeThickness_) ); // coordinate (D)
polyline.Points.add(createPoint(WebThickness_*0.5,Bottom+FlangeThickness_) ); // coordinate (E)
polyline.Points.add(createPoint(Right,Bottom+FlangeThickness_) ); // coordinate (F)
polyline.Points.add(createPoint(Right,Bottom) ); // coordinate (G)
polyline.Points.add(createPoint(Left,Bottom) ); // coordinate (H)
polyline.Points.add(createPoint(Left,Bottom+FlangeThickness_) ); // coordinate (I)
polyline.Points.add(createPoint(-WebThickness_*0.5,Bottom+FlangeThickness_) ); // coordinate (J)
polyline.Points.add(createPoint(-WebThickness_*0.5,Top-FlangeThickness_) ); // coordinate (K)
polyline.Points.add(createPoint(Left,Top-FlangeThickness_) ); // coordinate (L)
// close profile
polyline.Points.add(createPoint(Left,Top)); // coordinate (A)
IfcArbitraryClosedProfileDef profile = new IfcArbitraryClosedProfileDef(id++);
model_.insertEntity(profile);
//profile.ProfileType = new IfcProfileTypeEnum(IfcProfileTypeEnum.AREA);
profile.OuterCurve = polyline;
return profile;
}
要创建笛卡尔 2d 点,我使用以下方法:
private IfcCartesianPoint createPoint(double x, double y) {
IfcCartesianPoint point = new IfcCartesianPoint(id++);
point.Coordinates.add(new IfcLengthMeasure(x));
point.Coordinates.add(new IfcLengthMeasure(y));
model_.insertEntity(point);
return point;
}
可以通过以下方式创建挤压实体形式的轮廓:
private IfcExtrudedAreaSolid getBasicProfileDescirption() {
IfcExtrudedAreaSolid baseMesh = new IfcExtrudedAreaSolid();
baseMesh.SweptArea = getBasicProfileDescirption();
baseMesh.ExtrudedDirection = createDirecton(0, 0, 1);
baseMesh.Depth = new IfcPositiveLengthMeasure(scale_ * height_);
return baseMesh;
}
IFC 定义了许多可以使用的交叉部分(配置文件):
顺便说一句,该getDirection
方法如下所示:
private IfcDirection createDirecton(double x, double y, double z) {
IfcDirection dir = new IfcDirection();
dir.DirectionRatios.add(new IfcReal(x));
dir.DirectionRatios.add(new IfcReal(y));
dir.DirectionRatios.add(new IfcReal(z));
return dir;
}