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Insert Splines Example (C#)

This example shows how to:

  • construct several Splines, which are displayed as the Dassault Systèmes logo in a DraftSight drawing.
  • fire events before and after commands are executed.
  • select a group of entities and modify a member in that group of entities.
  • execute a command using IApplication::RunCommand.
//--------------------------------------------------------------
// Preconditions:
// 1. Create a C# Windows console project.
// 2. Copy and paste this example into the C# IDE.
// 3. Add a reference to the DraftSight type library,
//    install_dir\APISDK\tlb\DraftSight.Interop.dsAutomation.dll.
// 4. Add references to System and System.Windows.Forms.
// 5. Start DraftSight.
// 6. Press F5.
//
// Postconditions:
// 1. CommandPreNotify event is fired. Click OK to close
//    the message box.
// 2. Click anywhere in the drawing when you are prompted
//    in the command window to Click to insert a point
//    for the lower-left corner for the 3DS logo.
// 3. CommandPostNotify event is fired. Click OK to close
//    the message box.
// 4. The Dassault Systemes logo is constructed in the drawing.
//    a. Examine the drawing to verify.
//    b. Press F5 in the IDE.
//       The Dassault Systemes logo's letter D is changed 
//       from blue to yellow.
//    c. Press F5 to in the IDE.
//       The Dassault Systemes logo's letter D is changed
//       back to blue.
//    d. Press F5 in the IDE.
// 5. CommandPreNotify event is fired. Click OK to close the
//    the message box.
// 6. CommandPostNotify event is fired. Click OK to close the
//    message box.
// 7. The Dassault Systemes logo is deleted.
//----------------------------------------------------------------
using DraftSight.Interop.dsAutomation;
using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
 
static class Module1
{
    static DraftSight.Interop.dsAutomation.Application dsApp = default(DraftSight.Interop.dsAutomation.Application);
    static string commandPreNotifyCommand = " ";
    static string commandPostNotifyCommand = " ";
    static Document dsDoc = default(Document);
 
    	public static void Main()
    	{
        		SketchManager dsSketchMgr; 
        		SelectionManager dsSelectionManager;
        		SelectionFilter dsSelectionFilter;
        		EntityHelper dsEntityHelper; 

		// Connect to DraftSight
                  dsApp = (DraftSight.Interop.dsAutomation.Application)Marshal.GetActiveObject("DraftSight.Application");
 
                  // Abort any command currently running in DraftSight to
		// avoid nested commands
		dsApp.AbortRunningCommand();
        		//Set up dsApp events
        		AttachAppEventHandlers();
 
		// Get command message object
		CommandMessage dsCommandMessage = default(CommandMessage);
		dsCommandMessage = dsApp.GetCommandMessage();
 
		//Get active document
		dsDoc = dsApp.GetActiveDocument();
		if (dsDoc == null) {
			MessageBox.Show("There are no open documents in DraftSight.");
			return;
		}
 
		// Get model space
		Model dsModel = default(Model);
		dsModel = dsDoc.GetModel();
 
		// Get Sketch Manager
		dsSketchMgr = dsModel.GetSketchManager();
 
		double x = 0;
		double y = 0;
		double z = 0;
 
		// Prompt to insert the a point for lower-left corner of the 3DS logo
		MathUtility dsMathUtility = default(MathUtility);
		MathPlane dsMathPlane = default(MathPlane);
		dsMathUtility = dsApp.GetMathUtility();
		dsMathPlane = dsMathUtility.CreateXYPlane();
		bool status = false;
        		string mssge = "Click to insert a point for the lower-left corner for the 3DS logo";
		status = dsCommandMessage.PromptForPoint2(mssge, true, 0, 0, 0, out x, out y, out z, dsMathPlane);
 
		double[] spArray1 = new double[27];
		double[] spArray2 = new double[24];
		double[] spArray3 = new double[18];
 
		// Construct the D
		spArray1[0] = x + 0.4513;
		spArray1[1] = y + 0.3825;
		spArray1[2] = z + 0.0;
		spArray1[3] = x + 0.324;
		spArray1[4] = y + 0.1912;
		spArray1[5] = z + 0.0;
		spArray1[6] = x + 0.1261;
		spArray1[7] = y + 0.0932;
		spArray1[8] = z + 0.0;
		spArray1[9] = x + 0.2571;
		spArray1[10] = y + 0.3839;
		spArray1[11] = z + 0.0;
		spArray1[12] = x + 0.0023;
		spArray1[13] = y + 0.0086;
		spArray1[14] = z + 0.0;
		spArray1[15] = x + 0.2132;
		spArray1[16] = y + 0.0711;
		spArray1[17] = z + 0.0;
		spArray1[18] = x + 0.5275;
		spArray1[19] = y + 0.4664;
		spArray1[20] = z + 0.0;
		spArray1[21] = x + 0.428;
		spArray1[22] = y + 0.5052;
		spArray1[23] = z + 0.0;
		spArray1[24] = x + 0.1237;
		spArray1[25] = y + 0.4568;
		spArray1[26] = z + 0.0;
 
		Spline spline1 = default(Spline);
		spline1 = dsSketchMgr.InsertSpline(spArray1, true, 0, 0, 0, 0, 0, 0);
 
		// Construct the S
		spArray2[0] = x + 0.4659;
		spArray2[1] = y + 0.1472;
		spArray2[2] = 0.0;
		spArray2[3] = x + 0.8218;
		spArray2[4] = y + 0.2052;
		spArray2[5] = z + 0.0;
		spArray2[6] = x + 0.6099;
		spArray2[7] = y + 0.5472;
		spArray2[8] = z + 0.0;
		spArray2[9] = x + 0.7898;
		spArray2[10] = y + 0.6372;
		spArray2[11] = z + 0.0;
		spArray2[12] = x + 0.9877;
		spArray2[13] = y + 0.5952;
		spArray2[14] = z + 0.0;
		spArray2[15] = x + 0.7158;
		spArray2[16] = y + 0.5472;
		spArray2[17] = z + 0.0;
		spArray2[18] = x + 0.9318;
		spArray2[19] = y + 0.2232;
		spArray2[20] = z + 0.0;
		spArray2[21] = x + 0.7818;
		spArray2[22] = y + 0.1112;
		spArray2[23] = z + 0.0;
 
		Spline spline2 = default(Spline);
		spline2 = dsSketchMgr.InsertSpline(spArray2, true, 0, 0, 0, 0, 0, 0);
 
		// Construct the 3
		spArray3[0] = x + 0.6319;
		spArray3[1] = y + 0.8672;
		spArray3[2] = z + 0.0;
		spArray3[3] = x + 0.33;
		spArray3[4] = y + 0.9233;
		spArray3[5] = z + 0.0;
		spArray3[6] = x + 0.5;
		spArray3[7] = y + 0.9642;
		spArray3[8] = z + 0.0;
		spArray3[9] = x + 0.7318;
		spArray3[10] = y + 0.8952;
		spArray3[11] = z + 0.0;
		spArray3[12] = x + 0.6279;
		spArray3[13] = y + 0.6892;
		spArray3[14] = z + 0.0;
		spArray3[15] = x + 0.369;
		spArray3[16] = y + 0.5563;
		spArray3[17] = z + 0.0;
 
		Spline spline3 = default(Spline);
		spline3 = dsSketchMgr.InsertSpline(spArray3, true, 0, 0, 0, 0, 0, 0);
 
		// Set the colors for the logo
		Color color1 = default(Color);
		Color color2 = default(Color);
		Color color3 = default(Color);
 
		color1 = spline1.Color;
		color2 = spline2.Color;
		color3 = spline3.Color;
 
		color1.SetNamedColor(dsNamedColor_e.dsNamedColor_Blue);
		color2.SetNamedColor(dsNamedColor_e.dsNamedColor_Yellow);
		color3.SetNamedColor(dsNamedColor_e.dsNamedColor_Red);
 
		spline1.Color = color1;
		spline2.Color = color2;
		spline3.Color = color3;
       		// Examine the drawing to verify that
        		// the logo was created and that
        		// the letter D is blue, the 
        		// letter S is yellow, and the non-letter 
        		// is red
 
		System.Diagnostics.Debugger.Break();
	    	// Press F5 to change the colors of the logo
 
	    	//Get Selection Manager
	    	dsSelectionManager = dsDoc.GetSelectionManager();
 
	    	//Get selection filter
	    	dsSelectionFilter = dsSelectionManager.GetSelectionFilter();
 
	    	//Clear selection filter
	    	dsSelectionFilter.Clear();
 
	    	//Add Spline entities to the selection filter
	    	dsSelectionFilter.AddEntityType(dsObjectType_e.dsSplineType);
 
	    	//Activate selection filter
	    	dsSelectionFilter.Active = true;
 
	    	//Get all layer names 
	    	string[] layerNames = GetLayers(dsDoc);
 
	    	object entityType = null;
	    	object entityObject = null;
        		object[] entityObjects = null;
 
 
	    	//Get Spline entities
	    	dsSketchMgr.GetEntities(dsSelectionFilter, layerNames, out entityType, out entityObject);        
        		entityObjects = (object[])entityObject;
 
        		// Get EntityHelper
        		dsEntityHelper = (EntityHelper)dsApp.GetEntityHelper();
 
	    	// Change the letter D in the logo from blue to yellow
	    	dsEntityHelper.SetColor(entityObjects[0], color2);
 
	    	System.Diagnostics.Debugger.Break();
	    	// Examine the drawing to verify that
	    	// the color of D has changed from blue to yellow
	    	// Press F5 to continue
 
	    	dsEntityHelper.SetColor(entityObjects[0], color1);
 
        		System.Diagnostics.Debugger.Break();
        		// Examine the drawing to verify that
        		// the color of D has changed back to blue
        		// Press F5 to delete the logo
	
		int state;
        		state = (int)dsApp.RunCommand("DELETE ALL\n\n"false);
 
        		DetachEventHandlers();
 
    }
 
    //Attach dsApp event handlers
    static public void AttachAppEventHandlers()
    {
        AttachAppEvents();
    }

    static public void AttachAppEvents()
    {
        dsApp.CommandPreNotify += new _IApplicationEvents_CommandPreNotifyEventHandler(CommandPreNotify);
        dsApp.CommandPostNotify += new _IApplicationEvents_CommandPostNotifyEventHandler(CommandPostNotify);
    }
 
    //Detach all event handlers
    static public void DetachEventHandlers()
    {
        dsApp.CommandPreNotify -= new _IApplicationEvents_CommandPreNotifyEventHandler(CommandPreNotify);
        dsApp.CommandPostNotify -= new _IApplicationEvents_CommandPostNotifyEventHandler(CommandPostNotify);
    }
 
    static public void CommandPreNotify(string commandPreNotifyCommand, Document Document)
    {
        MessageBox.Show("CommandPreNotify event was fired before " + commandPreNotifyCommand + " was executed.");
    }
 
    static public void CommandPostNotify(string commandPostNotifyCommand, Document Document)
    {
        MessageBox.Show("CommandPostNotify event was fired after " + commandPostNotifyCommand + " was executed.");
    } 	
    private static string[] GetLayers(Document dsDoc)
    {
        //Get Layer Manager and Layer names
        LayerManager dsLayerManager = dsDoc.GetLayerManager();
 
        object[] dsLayers = (object[])dsLayerManager.GetLayers();
 
        string[] layerNames = new string[dsLayers.Length];
 
        for (int index = 0; index < dsLayers.Length; ++index)
        {
            Layer dsLayer = dsLayers[index] as Layer;
            layerNames[index] = dsLayer.Name;
        }
 
            return layerNames;
     }
}


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