C# SOLIDWORKS插件 获取装配体长、宽、高 以及 绘制装配体边界框

1、通过SOLIDWORKS提供的API获取装配体长宽高

// 获取最大值
public double GetMax(double Val1, double Val2, double Val3)
{
    double functionReturnValue = 0;
    // Finds maximum of 3 values
    functionReturnValue = Val1;
    if (Val2 > functionReturnValue)
    {
        functionReturnValue = Val2;
    }
    if (Val3 > functionReturnValue)
    {
        functionReturnValue = Val3;
    }
    return functionReturnValue;
}
// 获取最小值
public double GetMin(double Val1, double Val2, double Val3)
{
    double functionReturnValue = 0;
    // Finds minimum of 3 values
    functionReturnValue = Val1;
    if (Val2 < functionReturnValue)
    {
        functionReturnValue = Val2;
    }
    if (Val3 < functionReturnValue)
    {
        functionReturnValue = Val3;
    }
    return functionReturnValue;
}
// 获取装配体长宽高
public void GetXYZ(Component2 swComponent, out double X, out double Y, out double Z)
{
    const double MaxDouble = 1.79769313486231E+308;
    const double MinDouble = -1.79769313486231E+308;
    object[] vChild = null;
    Component2 swChildComp = default(Component2);
    object Box = null;
    double[] BoxArray = new double[6];
    double X_max = 0;
    double X_min = 0;
    double Y_max = 0;
    double Y_min = 0;
    double Z_max = 0;
    double Z_min = 0;

    // Initialize values
    X_max = MinDouble;
    X_min = MaxDouble;
    Y_max = MinDouble;
    Y_min = MaxDouble;
    Z_max = MinDouble;
    Z_min = MaxDouble;

    vChild = (object[])swComponent.GetChildren();
    for (int i = 0; i <= vChild.GetUpperBound(0); i++)
    {
        swChildComp = (Component2)vChild[i];
        if (swChildComp.Visible == (int)swComponentVisibilityState_e.swComponentVisible)
        {
            Box = (object)swChildComp.GetBox(false, false);
            if (Box != System.DBNull.Value)
            {
                BoxArray = (double[])Box;
                X_max = GetMax(BoxArray[0], BoxArray[3], X_max);
                X_min = GetMin(BoxArray[0], BoxArray[3], X_min);
                Y_max = GetMax(BoxArray[1], BoxArray[4], Y_max);
                Y_min = GetMin(BoxArray[1], BoxArray[4], Y_min);
                Z_max = GetMax(BoxArray[2], BoxArray[5], Z_max);
                Z_min = GetMin(BoxArray[2], BoxArray[5], Z_min);
            } 
        }

    }
    // 长、宽、高
    // 将m转换为mm(四舍五入)
    X = Math.Round((X_max - X_min)*1000);
    Y = Math.Round((Y_max - Y_min)*1000);
    Z = Math.Round((Z_max - Z_min)*1000);
}

2、绘制装配体边界框 

 

/// 

/// 绘制装配体边界框
/// 
public void BoundingAssemblyBox()
{
	const double MaxDouble = 1.79769313486231E+308;
	const double MinDouble = -1.79769313486231E+308;
	ModelDoc2 swModel = default(ModelDoc2);
	AssemblyDoc swAssy = default(AssemblyDoc);
	Configuration swConfig = default(Configuration);
	ConfigurationManager swConfigurationMgr = default(ConfigurationManager);
	Component2 swRootComp = default(Component2);
	object[] vChild = null;
	Component2 swChildComp = default(Component2);
	object Box = null;
	double[] BoxArray = new double[6];
	double X_max = 0;
	double X_min = 0;
	double Y_max = 0;
	double Y_min = 0;
	double Z_max = 0;
	double Z_min = 0;
	SketchManager swSketchMgr = default(SketchManager);
	SketchPoint[] swSketchPt = new SketchPoint[9];
	SketchSegment[] swSketchSeg = new SketchSegment[13];
	int i = 0;

	if (iSwApp.GetDocumentCount() == 0)
	{
		MessageBox.Show("没有SolidWorks文件!", "提示信息");
		return;
	}

	swModel = (ModelDoc2)iSwApp.ActiveDoc;

	// 判断该活动文档是否为零部件
	if (swModel.GetType() != (int)swDocumentTypes_e.swDocASSEMBLY)
	{
		MessageBox.Show("活动文档不是装配体，请选择装配体!", "提示信息");
		return;
	}
	swAssy = (AssemblyDoc)swModel;
	swConfigurationMgr = (ConfigurationManager)swModel.ConfigurationManager;
	swConfig = (Configuration)swConfigurationMgr.ActiveConfiguration;
	swRootComp = (Component2)swConfig.GetRootComponent3(true);

	// Initialize values
	X_max = MinDouble;
	X_min = MaxDouble;
	Y_max = MinDouble;
	Y_min = MaxDouble;
	Z_max = MinDouble;
	Z_min = MaxDouble;

	vChild = (object[])swRootComp.GetChildren();
	for (i = 0; i <= vChild.GetUpperBound(0); i++)
	{
		swChildComp = (Component2)vChild[i];
		if (swChildComp.Visible == (int)swComponentVisibilityState_e.swComponentVisible)
		{
			Box = (object)swChildComp.GetBox(false, false);
			if (Box != System.DBNull.Value)
			{
				BoxArray = (double[])Box;
				X_max = GetMax(BoxArray[0], BoxArray[3], X_max);
				X_min = GetMin(BoxArray[0], BoxArray[3], X_min);
				Y_max = GetMax(BoxArray[1], BoxArray[4], Y_max);
				Y_min = GetMin(BoxArray[1], BoxArray[4], Y_min);
				Z_max = GetMax(BoxArray[2], BoxArray[5], Z_max);
				Z_min = GetMin(BoxArray[2], BoxArray[5], Z_min);
			}
		}
	}

	Debug.Print("Assembly Bounding Box (" + swModel.GetPathName() + ") = ");
	Debug.Print("  (" + (X_min * 1000.0) + "," + (Y_min * 1000.0) + "," + (Z_min * 1000.0) + ") mm");
	Debug.Print("  (" + (X_max * 1000.0) + "," + (Y_max * 1000.0) + "," + (Z_max * 1000.0) + ") mm");

	swSketchMgr = swModel.SketchManager;
	swSketchMgr.Insert3DSketch(true);
	swSketchMgr.AddToDB = true;



	// Draw points at each corner of bounding box
	swSketchPt[0] = swSketchMgr.CreatePoint(X_min, Y_min, Z_min);
	swSketchPt[1] = swSketchMgr.CreatePoint(X_min, Y_min, Z_max);
	swSketchPt[2] = swSketchMgr.CreatePoint(X_min, Y_max, Z_min);
	swSketchPt[3] = swSketchMgr.CreatePoint(X_min, Y_max, Z_max);
	swSketchPt[4] = swSketchMgr.CreatePoint(X_max, Y_min, Z_min);
	swSketchPt[5] = swSketchMgr.CreatePoint(X_max, Y_min, Z_max);
	swSketchPt[6] = swSketchMgr.CreatePoint(X_max, Y_max, Z_min);
	swSketchPt[7] = swSketchMgr.CreatePoint(X_max, Y_max, Z_max);

	// Draw bounding box
	swSketchSeg[0] = swSketchMgr.CreateLine(X_min, Y_min, Z_min, X_max, Y_min, Z_min);
	swSketchSeg[1] = swSketchMgr.CreateLine(X_max, Y_min, Z_min, X_max, Y_min, Z_max);
	swSketchSeg[2] = swSketchMgr.CreateLine(X_max, Y_min, Z_max, X_min, Y_min, Z_max);
	swSketchSeg[3] = swSketchMgr.CreateLine(X_min, Y_min, Z_max, X_min, Y_min, Z_min);
	swSketchSeg[4] = swSketchMgr.CreateLine(X_min, Y_min, Z_min, X_min, Y_max, Z_min);
	swSketchSeg[5] = swSketchMgr.CreateLine(X_min, Y_min, Z_max, X_min, Y_max, Z_max);
	swSketchSeg[6] = swSketchMgr.CreateLine(X_max, Y_min, Z_min, X_max, Y_max, Z_min);
	swSketchSeg[7] = swSketchMgr.CreateLine(X_max, Y_min, Z_max, X_max, Y_max, Z_max);
	swSketchSeg[8] = swSketchMgr.CreateLine(X_min, Y_max, Z_min, X_max, Y_max, Z_min);
	swSketchSeg[9] = swSketchMgr.CreateLine(X_max, Y_max, Z_min, X_max, Y_max, Z_max);
	swSketchSeg[10] = swSketchMgr.CreateLine(X_max, Y_max, Z_max, X_min, Y_max, Z_max);
	swSketchSeg[11] = swSketchMgr.CreateLine(X_min, Y_max, Z_max, X_min, Y_max, Z_min);

	swSketchMgr.AddToDB = false;
	swSketchMgr.Insert3DSketch(true);


}