SOLIDWORKS API Help

Manage Collision Detection Example (C#)

This example shows how to manage collision detection.

//---------------------------------------------------------------------
// Preconditions: 
// 1. Open public_documents\samples\tutorial\api\Spindleassem.sldasm.
// 2. Open the Immediate window.
//
// Postconditions: Inspect the Immediate window.
//
// NOTE: Because the model is used elsewhere, do not save changes to it.
//----------------------------------------------------------------------
 

using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System.Runtime.InteropServices;
using System;
using System.Diagnostics;
 

namespace ManageCollisionDetection
{
    partial class SolidWorksMacro
    {
 
 
        private ModelDoc2 Part;
        private AssemblyDoc swDoc;
        private CollisionDetectionManager cdm;
        private CollisionDetectionGroup cdg;
        private CollisionDetectionGroup cdg2;
        private CollisionDetectionGroup cdg3;
        private Collision aCollision;
        private double[] TransformData = new double[16];
        private object TransformDataVariant;
        private double[] TransformData1 = new double[16];
        private object TransformDataVariant1;
        private Component2[] comp = new Component2[1];
        private Component2[] comp1 = new Component2[1];
        private Component2[] comp2 = new Component2[1];
        private MathTransform[] transform = new MathTransform[1];
        private MathTransform[] transform1 = new MathTransform[1];
        private MathUtility swMathUtil;
        private object var1;
        private bool boolstatus;
        private int longstatus;
        private int numCollisions;
        private int i;
        private int j;
        private object[] comps;
 
 
        public void Main()
        {
 
            Part = (ModelDoc2)swApp.ActiveDoc;
            swDoc = (AssemblyDoc)Part;
            cdm = (CollisionDetectionManager)swApp.GetCollisionDetectionManager();
            longstatus = cdm.SetAssembly(swDoc);
 
 
            cdm.GraphicsRedrawEnabled = true;
 
            cdg = (CollisionDetectionGroup)cdm.CreateGroup();
            cdg2 = (CollisionDetectionGroup)cdm.CreateGroup();
            cdg3 = (CollisionDetectionGroup)cdm.CreateGroup();
 
            //Holder
            boolstatus = Part.Extension.SelectByID2("Holder-1@Spindleassem", "COMPONENT", 0, 0, 0, true, 0, null, 0);
 
            TransformData[0] = 0.561729092855705;
            TransformData[1] = -0.827321235216108;
            TransformData[2] = 0;
            TransformData[3] = 0.827321235216108;
            TransformData[4] = 0.561729092855705;
            TransformData[5] = 0;
            TransformData[6] = 0;
            TransformData[7] = 0;
            TransformData[8] = 1.0D;
            TransformData[9] = 0.0202097529022064;
            TransformData[10] = 0.025899850979138;
            TransformData[11] = 0.1;
            TransformData[12] = 1;
            TransformData[13] = 0;
            TransformData[14] = 0;
            TransformData[15] = 0;
 
            TransformDataVariant = TransformData;
            swMathUtil = (MathUtility)swApp.GetMathUtility();
 
            //Cutting tool
            boolstatus = Part.Extension.SelectByID2("CuttingTool-1@Spindleassem", "COMPONENT", 0, 0, 0, true, 0, null, 0);
 
            TransformData1[0] = 1;
            TransformData1[1] = 0;
            TransformData1[2] = 0;
            TransformData1[3] = 0;
            TransformData1[4] = 1;
            TransformData1[5] = 0;
            TransformData1[6] = 0;
            TransformData1[7] = 0;
            TransformData1[8] = 1;
            TransformData1[9] = -0.01;
            TransformData1[10] = -0.03;
            TransformData1[11] = 0.1;
            TransformData1[12] = 1;
            TransformData1[13] = 0;
            TransformData1[14] = 0;
            TransformData1[15] = 0;
 
            TransformDataVariant1 = TransformData1;
 
            //Work piece
            boolstatus = Part.Extension.SelectByID2("workpiece-1@Spindleassem", "COMPONENT", 0, 0, 0, true, 0, null, 0);
 
            comp[0] = (Component2)((SelectionMgr)(Part.SelectionManager)).GetSelectedObjectsComponent4(1, -1);
            comp1[0] = (Component2)((SelectionMgr)(Part.SelectionManager)).GetSelectedObjectsComponent4(2, -1);
            comp2[0] = (Component2)((SelectionMgr)(Part.SelectionManager)).GetSelectedObjectsComponent4(3, -1);
 
            transform[0] = (MathTransform)swMathUtil.CreateTransform((TransformDataVariant));
            transform1[0] = (MathTransform)swMathUtil.CreateTransform((TransformDataVariant1));
 
            longstatus = cdg.SetComponents(comp); //Holder
            longstatus = cdg2.SetComponents(comp1); //Cutting tool
            longstatus = cdg3.SetComponents(comp2); //Work piece
 
            longstatus = cdg.ApplyTransforms(transform);
            longstatus = cdg2.ApplyTransforms(transform1);
 
            longstatus = cdm.IsCollisionPresent(true);
            numCollisions = cdm.GetCollisions(true, out var1);
 
            object[] collisions;
            collisions = (object[])var1;
 
            if (numCollisions > 0)
            {
              
                int tempVar = numCollisions - 1;
                for (i = 0; i <= tempVar; i++)
                {
                    Debug.Print("Collision " + (i + 1));
                    aCollision = (Collision)collisions[i];
                    Debug.Print("  Is penetrating? " + aCollision.IsPenetrating());
                    comps = (object[])aCollision.GetComponents();
                    for (j = 0; j<=comps.GetUpperBound(0); j++)
                    {
                        Debug.Print("   " + ((Component2)comps[j]).Name);
                    }
                }
            }
            else
            {
                Debug.Print("No collisions present");
            }
 
        }
 
        /// <summary>
        /// The SldWorks swApp variable is pre-assigned for you.
        /// </summary>
        public SldWorks swApp;
    }
 
}