Hide Table of Contents

Insert Hatch by Entities or Internal Points Example (C#)

This example shows how to insert a Hatch either by selecting sketch entities that form the Hatch boundary or by selecting internal points of enclosed areas of a drawing.

//--------------------------------------------------------------
// Preconditions:
// 1. Create a C# Windows console project.
// 2. Copy and paste this example into the C# IDE.
// 3. Add a reference to:
//    install_dir\APISDK\tlb\DraftSight.Interop.dsAutomation.dll.
// 4. Add references to System and System.Windows.Forms.
// 5. Start DraftSight and open a drawing document with sketch entities.
// 6. Start debugging the project.
//
// In the DraftSight command window, choose how the Hatch should be inserted:
//    1. Type Entities.
//    2. Select the sketch entities that form the boundary of the area to be hatched.
//    3. Press Enter when finished.
//    - or -
//    1. Type InternalPoints.
//    2. Select three points that are in enclosed areas of the drawing.
//
// Postconditions: A Hatch is inserted, and the drawing document
// is zoomed to fit.
//----------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Text;
using DraftSight;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Diagnostics;

namespace AddHatch
{
    
class Program
    {
        
private static DraftSight.Application dsApp;
        
private static DraftSight.Document dsDoc;

        
static void Main(string[] args)
        {
            
//Connect to DraftSight application
            dsApp = ConnectToDraftSight();
            
if (null == dsApp)
            {
                
return;
            }

            dsApp.AbortRunningCommand();
// abort any command currently running in DraftSight to avoid nested commands

            
//Get active document
            dsDoc = dsApp.GetActiveDocument();
            
if (null == dsDoc)
            {
                
MessageBox.Show("There are no open documents in DraftSight.");
                
return;
            }

            
//Get model space
            Model dsModel = dsDoc.GetModel();

            
//Get sketch manager
            SketchManager dsSketchMgr = dsModel.GetSketchManager();

            
//Get command message object
            CommandMessage dsCommandMessage = dsApp.GetCommandMessage();

            
//Display a prompt at the command line to create Hatch by entities or by internal points
            string[] keywords = { "Entities", "InternalPoints" };
            
string selectedKeyword;
            
bool promptResult = dsCommandMessage.PromptForKeyword("Insert Hatch by:", keywords, keywords[0], out selectedKeyword);
            
if (promptResult)
            {
                
//The user selected "By Entities" option
                if (selectedKeyword.ToUpper() == "_" + keywords[0].ToUpper() ||
                    selectedKeyword.ToUpper() == keywords[0].ToUpper())
                {
                    
DispatchWrapper[] selectedEntities = SelectEntities(dsCommandMessage);

                    InsertHatchByEntities(dsSketchMgr, selectedEntities);
                }

                
//The user selected "By Internal Points" option
                if (selectedKeyword.ToUpper() == "_" + keywords[1].ToUpper())
                {
                    
//Select three internal points
                    int pointsCount = 3;

                    dsCommandMessage.PrintLine(
"Select three internal points for a hatch");

                    
double[] internalPoints = SelectPoints(dsCommandMessage, pointsCount);

                    InsertHatchByInternalPoints(dsSketchMgr, internalPoints);
                }
            }
        }

        
private static void InsertHatchByInternalPoints(SketchManager dsSketchMgr, double[] internalPoints)
        {
            
//Hatch parameters
            string patternName = "ANSI31";
            
double patternScale = 1;
            
double patternAngle = 0;

            
//Insert Hatch
            Hatch dsHatch = dsSketchMgr.InsertHatchByInternalPoints(internalPoints, patternName, patternScale, patternAngle);
            
if (null != dsHatch)
            {
                
//Change color of Hatch
                Color dsColor = dsHatch.Color;
                dsColor.SetNamedColor(
dsNamedColor_e.dsNamedColor_Green);
                dsHatch.Color = dsColor;

                
//Zoom to fit
                dsApp.Zoom(dsZoomRange_e.dsZoomRange_Fit, null, null);
            }
            
else
            {
                
MessageBox.Show("Hatch entity was not added to the current drawing.");
            }
        }

        
private static double[] SelectPoints(CommandMessage dsCommandMessage, int internalPointsCount)
        {
            
List<double> internalPoints = new List<double>();

            
//Display prompt for point
            double x, y, z;
            
int count = 0;
            
while (count < internalPointsCount)
            {
                
if (dsCommandMessage.PromptForPoint("Specify internal point", out x, out y, out z))
                {
                    internalPoints.Add(x);
                    internalPoints.Add(y);
                }

                count++;
            }

            
return internalPoints.ToArray();
        }

        
private static void InsertHatchByEntities(SketchManager dsSketchMgr, DispatchWrapper[] dsEntities)
        {
            
//Hatch parameters
            string patternName = "GRASS";
            
double patternScale = 1;
            
double patternAngle = 0;

            
//Insert Hatch
            Hatch dsHatch = dsSketchMgr.InsertHatchByEntities(dsEntities, patternName, patternScale, patternAngle);
            
if (null != dsHatch)
            {
                
//Change color of Hatch
                Color dsColor = dsHatch.Color;
                dsColor.SetNamedColor(
dsNamedColor_e.dsNamedColor_Blue);
                dsHatch.Color = dsColor;

                
//Zoom to fit
                dsApp.Zoom(dsZoomRange_e.dsZoomRange_Fit, null, null);
            }
            
else
            {
                
MessageBox.Show("Hatch entity was not added to the current drawing.");
            }
        }

        
private static DispatchWrapper[] SelectEntities(CommandMessage dsCommandMessage)
        {
            
DispatchWrapper[] selectedEntities = null;

            
//Prompt for multiple selection of entities
            if (dsCommandMessage.PromptForSelection(false, "Specify entities", "It is not an entity"))
            {
                
//Get selection manager
                SelectionManager dsSelectionMgr = dsDoc.GetSelectionManager();

                
//Get count of selected entities
                dsSelectionSetType_e selectionType = dsSelectionSetType_e.dsSelectionSetType_Previous;
                
int count = dsSelectionMgr.GetSelectedObjectCount(selectionType);
                
if (count > 0)
                {
                    selectedEntities =
new DispatchWrapper[count];
                    
for (int index = 0; index < count; ++index)
                    {
                        
dsObjectType_e entityType;
                        selectedEntities[index] =
new DispatchWrapper(dsSelectionMgr.GetSelectedObject(selectionType, index, out entityType));
                    }
                }
            }

            
return selectedEntities;
        }

        
private static DraftSight.Application ConnectToDraftSight()
        {
            DraftSight.
Application dsApp = null;

            
try
            {
                
//Connect to DraftSight
                dsApp = (DraftSight.Application)Marshal.GetActiveObject("DraftSight.Application");
            }
            
catch (Exception ex)
            {
                
MessageBox.Show("Failed to connect to DraftSight. Cause: " + ex.Message);
                dsApp =
null;
            }

            
return dsApp;
        }
    }
}



Provide feedback on this topic

SOLIDWORKS welcomes your feedback concerning the presentation, accuracy, and thoroughness of the documentation. Use the form below to send your comments and suggestions about this topic directly to our documentation team. The documentation team cannot answer technical support questions. Click here for information about technical support.

* Required

 
*Email:  
Subject:   Feedback on Help Topics
Page:   Insert Hatch by Entities or Internal Points (C#)
*Comment:  
*   I acknowledge I have read and I hereby accept the privacy policy under which my Personal Data will be used by Dassault Systèmes

Print Topic

Select the scope of content to print:



x

We have detected you are using a browser version older than Internet Explorer 7. For optimized display, we suggest upgrading your browser to Internet Explorer 7 or newer.

 Never show this message again
x

Web Help Content Version: API Help (English only) 2019 SP04

To disable Web help from within SOLIDWORKS and use local help instead, click Help > Use SOLIDWORKS Web Help.

To report problems encountered with the Web help interface and search, contact your local support representative. To provide feedback on individual help topics, use the “Feedback on this topic” link on the individual topic page.