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Get B-Spline Surface Parameterization Data Example (C#)

This example shows how to get B-spline parameterization data for a selected face or surface.

//----------------------------------------------------------------------------
// Preconditions:
// 1.  Open public_documents\tutorial\molds\telephone.sldprt.
// 2.  Select a face.
// 3.  Open the Immediate Window.
//
// Postconditions: Examine the Immediate window.
//----------------------------------------------------------------------------


using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;
using System.Diagnostics;
namespace MacroBSurf_CSharp.csproj
{
    
partial class SolidWorksMacro
    {

        
public void Main()
        {

            
ModelDoc2 swModel = default(ModelDoc2);
            
SelectionMgr swSelMgr = default(SelectionMgr);
            
Face2 swFace = default(Face2);
            
Surface swSurf = default(Surface);
            
SurfaceParameterizationData swSurfParam = default(SurfaceParameterizationData);
            
BSurfParamData swBSurfParam = default(BSurfParamData);
            
bool sense = false;
            
object UKnots = null;
            
object VKnots = null;
            
object vCtrlPts = null;
            
int i = 0;

            swModel = (
ModelDoc2)swApp.ActiveDoc;
            swSelMgr = (
SelectionMgr)swModel.SelectionManager;
            swFace = (
Face2)swSelMgr.GetSelectedObject5(1);
            swSurf = (
Surface)swFace.GetSurface();
            swSurfParam = (
SurfaceParameterizationData)swSurf.Parameterization2();
            
Debug.Print("File = " + swModel.GetPathName());
            
Debug.Print(" Surface:");
            
Debug.Print(" U minimum is: " + swSurfParam.UMin);
            
Debug.Print(" U minimum bound type is: " + swSurfParam.UMinBoundType);
            
Debug.Print(" U maximum is: " + swSurfParam.UMax);
            
Debug.Print(" U maximum bound type is: " + swSurfParam.UMaxBoundType);
            
Debug.Print(" U property count is: " + swSurfParam.UPropertyNumber);
            
object varUProperties = null;
            
int[] uProperties;
            varUProperties = swSurfParam.UProperties;
            uProperties = (
int[])varUProperties;
            
Debug.Print(" U properties: ");
            
for (i = 0; i <= uProperties.GetUpperBound(0); i++)
            {
                
Debug.Print(" " + uProperties[i]);
            }

            
Debug.Print(" V minimum is: " + swSurfParam.VMin);
            
Debug.Print(" V minimum bound type is: " + swSurfParam.VMinBoundType);
            
Debug.Print(" V maximum is: " + swSurfParam.VMax);
            
Debug.Print(" V maximum bound type is: " + swSurfParam.VMaxBoundType);
            
Debug.Print(" V property count is: " + swSurfParam.VPropertyNumber);
            
object varVProperties = null;
            
int[] vProperties;
            varVProperties = swSurfParam.VProperties;
            vProperties = (
int[])varVProperties;
            
Debug.Print(" V properties: ");
            
for (i = 0; i <= vProperties.GetUpperBound(0); i++)
            {
                
Debug.Print(" " + vProperties[i]);
            }

            swBSurfParam = (
BSurfParamData)swSurf.GetBSurfParams3(false, false, swSurfParam, 0.01, out sense);

            
Debug.Print("U order is: " + swBSurfParam.UOrder);
            
Debug.Print("V order is: " + swBSurfParam.VOrder);
            
Debug.Print(" Control point column count is: " + swBSurfParam.ControlPointColumnCount);
            
Debug.Print(" Control point row count is: " + swBSurfParam.ControlPointRowCount);
            
Debug.Print(" Control point dimension is: " + swBSurfParam.ControlPointDimension);
            
Debug.Print(" U periodicity is: " + swBSurfParam.UPeriodicity);
            
Debug.Print(" V periodicity is: " + swBSurfParam.VPeriodicity);

            UKnots = swBSurfParam.UKnots;
            
double[] uknots;
            uknots = (
double[])UKnots;
            
Debug.Print("Knot vector in the U direction: ");
            
for (i = 0; i <= uknots.GetUpperBound(0); i++)
            {
                
Debug.Print(uknots[i].ToString());
            }
            VKnots = swBSurfParam.VKnots;
            
double[] vknots;
            vknots = (
double[])VKnots;
            
Debug.Print("Knot vector in the V direction: ");
            
for (i = 0; i <= vknots.GetUpperBound(0); i++)
            {
                
Debug.Print(vknots[i].ToString());
            }

            
// Get control points in row = 2, column = 3 of the control point matrix
            vCtrlPts = swBSurfParam.GetControlPoints(2, 3);
            
double[] ctrlpts;
            ctrlpts = (
double[])vCtrlPts;
            
Debug.Print("Control point at row=2 and column=3: ");
            
for (i = 0; i <= ctrlpts.GetUpperBound(0); i++)
            {
                
Debug.Print(ctrlpts[i].ToString());
            }
        }

        
public SldWorks swApp;

    }
}



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