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今天发现AnyCAD.Net SDK发布了，甚是激动，马上同步下代码和SDK使用一下。因为这个东东是这个领域少有的免费的开发包！
按照官方网站上的说法，AnyCAD .Net SDK是给C#的开发者提供的CAD API，而实际上其他.Net的开发者（VB.Net）都可以用。
（图片来自www.anycad.net）
在github上可以下载该SDK。解压后大小不到20M，相比其他CAD的SDK来说，确实小！
（摘自官方的示例程序）
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using AnyCAD.Platform; namespace AnyCAD.Basic { public partial class FormMain : Form { // The global application object Platform.Application theApplication = new Platform.Application(); // BREP tool to create geometries. BrepTools shapeMaker = new BrepTools(); // Default 3d View Platform.View3d theView; public FormMain() { InitializeComponent(); this.MouseWheel += new System.Windows.Forms.MouseEventHandler(this.OnMouseWheel); } private void FormMain_Load(object sender, EventArgs e) { // Initialize the Application. theApplication.Initialize(); Size size = panel3d.Size; // Create the 3d View theView = theApplication.CreateView(panel3d.Handle.ToInt32(), size.Width, size.Height); theView.RequestDraw(); this.timerDraw.Enabled = true; } private void FormMain_SizeChanged(object sender, EventArgs e) { Size size = panel3d.Size; if(theView != null) theView.OnSize(size.Width, size.Height); } private void panel3d_Paint(object sender, PaintEventArgs e) { if (theView == null) return; theView.Redraw(); } private void timerDraw_Tick(object sender, EventArgs e) { theView.RequestDraw(); theView.Redraw(); } private SceneNode ShowTopoShape(TopoShape topoShape, int id) { // Add the TopoShape to Scene. TopoShapeConvert convertor = new TopoShapeConvert(); SceneNode faceNode = convertor.ToFaceNode(topoShape, 0.5f); faceNode.SetId(id); theView.GetSceneManager().AddNode(faceNode); return faceNode; } private void ClearScene() { theView.GetSceneManager().ClearNodes(); } private void sphereToolStripMenuItem_Click(object sender, EventArgs e) { TopoShape sphere = shapeMaker.MakeSphere(new Vector3(0, 0, 0), 40); ShowTopoShape(sphere, 100); } private void boxToolStripMenuItem_Click(object sender, EventArgs e) { TopoShape box = shapeMaker.MakeBox(new Vector3(40, -20, 0), new Vector3(0, 0, 1), new Vector3(30, 40, 60)); SceneNode sceneNode = ShowTopoShape(box, 101); // Face Style FaceStyle style = new FaceStyle(); style.SetColor(new ColorValue(0.5f, 0.3f, 0, 1)); sceneNode.SetFaceStyle(style); } private void cylinderToolStripMenuItem_Click(object sender, EventArgs e) { TopoShape cylinder = shapeMaker.MakeCylinder(new Vector3(80, 0, 0), new Vector3(0, 0, 1), 20, 100, 315); SceneNode sceneNode = ShowTopoShape(cylinder, 102); FaceStyle style = new FaceStyle(); style.SetColor(new ColorValue(0.1f, 0.3f, 0.8f, 1)); sceneNode.SetFaceStyle(style); } private void coneToolStripMenuItem_Click(object sender, EventArgs e) { TopoShape cylinder = shapeMaker.MakeCone(new Vector3(120, 0, 0), new Vector3(0, 0, 1), 20, 100, 40, 315); ShowTopoShape(cylinder, 103); } private void extrudeToolStripMenuItem_Click(object sender, EventArgs e) { int size = 20; // Create the outline edge TopoShape arc = shapeMaker.MakeArc3Pts(new Vector3(-size, 0, 0), new Vector3(size, 0, 0), new Vector3(0, size, 0)); TopoShape line1 = shapeMaker.MakeLine(new Vector3(-size, -size, 0), new Vector3(-size, 0, 0)); TopoShape line2 = shapeMaker.MakeLine(new Vector3(size, -size, 0), new Vector3(size, 0, 0)); TopoShape line3 = shapeMaker.MakeLine(new Vector3(-size, -size, 0), new Vector3(size, -size, 0)); TopoShapeGroup shapeGroup = new TopoShapeGroup(); shapeGroup.Add(line1); shapeGroup.Add(arc); shapeGroup.Add(line2); shapeGroup.Add(line3); TopoShape wire = shapeMaker.MakeWire(shapeGroup); TopoShape face = shapeMaker.MakeFace(wire); // Extrude TopoShape extrude = shapeMaker.Extrude(face, 100, new Vector3(0, 0, 1)); ShowTopoShape(extrude, 104); // Check find.... SceneNode findNode = theView.GetSceneManager().FindNode(104); theView.GetSceneManager().SelectNode(findNode); } private void revoleToolStripMenuItem_Click(object sender, EventArgs e) { int size = 10; // Create the outline edge TopoShape arc = shapeMaker.MakeArc3Pts(new Vector3(-size, 0, 0), new Vector3(size, 0, 0), new Vector3(0, size, 0)); TopoShape line1 = shapeMaker.MakeLine(new Vector3(-size, -size, 0), new Vector3(-size, 0, 0)); TopoShape line2 = shapeMaker.MakeLine(new Vector3(size, -size, 0), new Vector3(size, 0, 0)); TopoShape line3 = shapeMaker.MakeLine(new Vector3(-size, -size, 0), new Vector3(size, -size, 0)); TopoShapeGroup shapeGroup = new TopoShapeGroup(); shapeGroup.Add(line1); shapeGroup.Add(arc); shapeGroup.Add(line2); shapeGroup.Add(line3); TopoShape wire = shapeMaker.MakeWire(shapeGroup); TopoShape revole = shapeMaker.Revol(wire, new Vector3(size * 3, 0, 0), new Vector3(0, 1, 0), 145); ShowTopoShape(revole, 105); } private void clearToolStripMenuItem_Click(object sender, EventArgs e) { ClearScene(); } private void sTLToolStripMenuItem_Click(object sender, EventArgs e) { OpenFileDialog dlg = new OpenFileDialog(); dlg.Filter = "STL (*.stl)|*.stl|All Files(*.*)|*.*"; if (DialogResult.OK == dlg.ShowDialog()) { TopoShape shape = shapeMaker.LoadFile(dlg.FileName); if( shape != null) ShowTopoShape(shape, 1000); } } private void Pane3d_MouseDown(object sender, MouseEventArgs e) { ViewUtility.OnMouseDownEvent(theView, e); } private void Pane3d_MouseMove(object sender, MouseEventArgs e) { ViewUtility.OnMouseMoveEvent(theView, e); } private void Pane3d_MouseUp(object sender, MouseEventArgs e) { ViewUtility.OnMouseUpEvent(theView, e); } private void OnMouseWheel(object sender, MouseEventArgs e) { ViewUtility.OnMouseWheelEvent(theView, e); } } }